Source: AGRICOLA database (1970-1996)

Staniulis, J. B., R. E. Davis, et al. (2000). Single and mixed phytoplasma infections in phyllody- and dwarf-diseased clover plants in Lithuania. Plant Disease. [print] October 84(10): 1061-1066. {a} Molecular Plant Pathology Laboratory, United States Department of Agriculture-Agricultural Research Service (USDA-ARS), Beltsville, MD, 20705, USA

Barrell, L. G., J. L. Burke, et al. (2000). Preparation of fresh forages for incubation and prediction of nutritive value. Proceedings of the New Zealand Society of Animal Production. [print] 60: 5-8. {a} AgResearch, Grasslands Centre, Palmerston North, New Zealand

Orradottir, B., A. Helgadottir, et al. (2000). Evaluation of indigenous and exotic perennial legumes for use in land reclamation in Iceland. Buvisindi . [print] 13: 27-41. {a} Rannsoknastofnum Landbunaoarins, Keldnaholti, 112, Reykjavik, Iceland

Gong, D. and M. T. McManus (2000). Purification and characterisation of two ACC oxidases expressed differentially during leaf ontogeny in white clover. Physiologia Plantarum. [print] September 110(1): 13-21. {a} Institute of Molecular BioSciences, Massey University, Palmerston North, New Zealand

Mehravaran, H., A. Mozafar, et al. (2000). Uptake and partitioning of 32P and 65Zn by white clover as affected by eleven isolates of mycorrhizal fungi. Journal of Plant Nutrition. [print] October 23(10): 1385-1395. {a} Institute of Plant Science, Eschikon Experiment Station, Swiss Federal Institute of Technology (ETH), CH-8315, Lindau, Switzerland

Brock, J. L., K. A. Albrecht, et al. (2000). Morphology of white clover during development from seed to clonal populations in grazed pastures. Journal of Agricultural Science. [print] September 135(2): 103-111. {a} Grasslands Research Centre, AgResearch, Palmerston North, New Zealand

Hofmann, R. W., E. E. Swinny, et al. (2000). Responses of nine Trifolium repens L. Populations to ultraviolet-B radiation: Differential flavonol glycoside accumulation and biomass production. Annals of Botany London. [print] September 86(3): 527-537. {a} Grasslands Research Centre, AgResearch, Palmerston North, New Zealand

Pederson, G. A., R. G. Pratt, et al. (2000). Response to leaf inoculations with Macrophomina phaseolina in white clover. Crop Science. [print] March April 40(3): 687-692. {a} Crop Sci. Res. Lab., Waste Mgt. and Forage Res. Unit, USDA-ARS, Mississippi State, MS, 39762, USA

Meister, K. and H. P. Liebert (2000). Influence of aqueous extracts of plants from the shoreline of a reservoir on growth and element-composition of duckweeds. Journal of Applied Botany. [print] September 74(3-4): 164-167. {a} Institut fuer Allgemeine Botanik der Friedrich-Schiller-Universitaet Jena, Am Planetarium 1, D-07743, Jena, Germany

Warren, J. M. (2000). The role of white clover in the loss of diversity in grassland habitat restoration. Restoration Ecology. [print] September 8(3): 318-323. {a} Conservation and Ecology Department, SAC Aberdeen, Craibstone, Bucksburn, Aberdeen, AB21 9TS, UK

Andres, P. and M. Jorba (2000). Mitigation strategies in some motorway embankments (Catalonia, Spain). Restoration Ecology. [print] September 8(3): 268-275. {a} Centre de Recerca Ecologica i Aplicacions Forestals, (CREAF), Universitat Autonoma de Barcelona, Bellaterra, 08193, Barcelona, Spain

Rakocevic, M., H. Sinoquet, et al. (2000). Assessing the geometric structure of a white clover (Trifolium repens L.) canopy using 3-D digitising. Annals of Botany London. [print] September 86(3): 519-526. {a} Domaine des Verrines, INRA-SEPF, F-86600, Lusignan, France

Huusela, V. E. and A. Vasarainen (2000). Plant succession in perennial grass strips and effects on the diversity of leafhoppers (Homoptera, Auchenorrhyncha). Agriculture Ecosystems and Environment. [print] August 80(1-2): 101-112. {a} Plant Production Research, Plant Protection, Agricultural Research Centre, FIN-31600, Jokioinen, Finland

Ryan, M. H., D. R. Small, et al. (2000). Phosphorus controls the level of colonisation by arbuscular mycorrhizal fungi in conventional and biodynamic irrigated dairy pastures. Australian Journal of Experimental Agriculture. [print] 40(5): 663-670. {a} CSIRO Plant Industry, Canberra, ACT, 2601, Australia

Williams, T. A., M. T. Abberton, et al. (2000). Contribution of white clover varieties in high-productivity systems under grazing and cutting. Journal of Agronomy and Crop Science. [print] September 185(2): 121-128. {a} Legume Breeding Group, Institute of Grassland and Environmental Research, Aberystwyth, UK

Pederson, G. A. and G. E. Brink (2000). Seed production of white clover cultivars and naturalized populations when grown in a pasture. Crop Science. [print] July August 40(4): 1109-1114. {a} ARS, Crop Sci. Res. Lab., Waste Mgmt. and Forage Res. Unit, USDA, 810 Hwy 12 E, Mississippi State, MS, 39762-5367, USA

Jahufer, M. Z. Z. and F. I. Gawler (2000). Genotypic variation for seed yield components in white clover (Trifolium repens L.). Australian Journal of Agricultural Research. [print] 51(6): 657-663. {a} Agriculture Victoria Pastoral and Veterinary Institute, Hamilton, Vic., 3300, Australia

Leeflang, L. (2000). Response of Trifolium repens to a mosaic of bare and vegetated patches. Plant Species Biology. [print] April 15(1): 59-65. {a} Department of Plant Ecology and Evolutionary Biology, Utrecht University, 3508 TB, Utrecht, Netherlands

Schulte, D. and W. Hengstenberg (2000). Engineering the active center of the 6-phospho-beta-galactosidase from Lactococcus lactis. Protein Engineering. [print] July 13(7): 515-518. {a} Arbeitsgruppe Physiologie der Mikroorganismen, Department of Biology, Ruhr-Universitaet Bochum, D-44780, Bochum, Germany

Ramirez, P. A. H., S. E. Buntinx, et al. (2000). Effect of breed and age on the voluntary intake and the micromineral status of non-pregnant sheep. II. Micromineral status. Small Ruminant Research. [print] August 37(3): 231-242. {a} Departamento de Nutricion, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, Mexico, D.F., 04510, Mexico

Ramirez, P. A. H., S. E. Buntinx, et al. (2000). Effect of breed and age on the voluntary intake and the micromineral status of non-pregnant sheep. 1. Estimation of voluntary intake. Small Ruminant Research. [print] August 37(3): 223-229. {a} Departamento de Nutricion, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, Mexico City, D.F., 04510, Mexico

Staley, T. E. and P. W. Voigt (2000). Methodological considerations for elucidating low-level liming effects on white clover symbiosis establishment in an acidic soil model system. Soil Science. [print] July 165(7): 567-577. {a} ARS-NAA, Appalachian Farming Systems Research Center, USDA, 1224 Airport Rd., Beaver, WV, 25813-9423, USA

Roehricht, W. and T. Peschel (1999). Sheep fescue-rich turf grasses in Berlin and Brandenburg. Verhandlungen des Botanischen Vereins von Berlin und Brandenburg. [print] 132: 253-266. {a} Strasse 43 Nr. 48, D-13125, Berlin, Germany

Brummer, E. C. and K. J. Moore (2000). Persistence of perennial cool-season grass and legume cultivars under continuous grazing by beef cattle. Agronomy Journal. [print] May June 92(3): 466-471. {a} Agron. Dep., Iowa State Univ., Ames, IA, 50011, USA

Bryan, W. B., E. C. Prigge, et al. (2000). Productivity of Kentucky bluegrass pasture grazed at three heights and two intensities. Agronomy Journal. [print] January February 92(1): 30-35. {a} Div. Plant Soil Sci., West Virginia Univ., Morgantown, WV, 26506-6108, USA

Lange, O. and W. M. T. Schifino (2000). Isozyme variation in wild and cultivated species of the genus Trifolium L. (Leguminosae). Annals of Botany London. [print] Aug 86(2): 339-345. {a} Departamento de Plantas Forrageiras e Agrometeorologia, Faculdade de Agronomia, Universidade Federal do Rio Grande do Sul, 91501-970, Porto Alegre, RS, Brazil

Cowan, A. A., A. H. Marshall, et al. (2000). Effect of pollen competition and stigmatic receptivity on seed set in white clover (Trifolium repens L.). Sexual Plant Reproduction. [print] July 13(1): 37-42. {a} Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EB, UK

Christiansen, P., J. M. Gibson, et al. (2000). Transgenic Trifolium repens with foliage accumulating the high sulphur protein, sunflower seed albumin. Transgenic Research. [print] April 9(2): 103-113. {a} Danish Plant Breeding, DLF-Trifolium, Hojerupvej 31, DK-4660, Store Heddinge, Denmark

Blanco, O. M. A., S. A. K. Spross, et al. (2000). Intraruminal mineral selenium boluses evaluation through blood and wool selenium concentration in grassing lambs. Veterinaria Mexico. [print] Abril Junio 31(2): 121-127. {a} Departamento de Produccion Animal: Rumiantes, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, 04510, Mexico, DF, Mexico

Bulinska, R. Z. (2000). Morphological relationships among 15 species of Trifolium occurring in Poland. Genetic Resources and Crop Evolution. [print] June 47(3): 267-272. {a} Plant Breeding and Acclimatization Institute, Radzikow, 05-870, Blonie, Poland

Burgess, C. P., R. Chapman, et al. (2000). Shallow mechanical loosening of a soil under dairy cattle grazing: Effects on soil and pasture. New Zealand Journal of Agricultural Research. [print] June 43(2): 279-290. {a} Dairying Research Corporation, Hamilton, New Zealand

Drewry, J. J., J. A. H. Lowe, et al. (2000). Effect of subsoiling on soil physical properties and pasture production on a Pallic Soil in Southland, New Zealand. New Zealand Journal of Agricultural Research. [print] June 43(2): 269-277. {a} AgResearch, C/- Soil and Physical Sciences Group, Soil, Plant and Ecological Sciences Division, Lincoln University, Canterbury, New Zealand

Drewry, J. J. and R. J. Paton (2000). Effect of subsoiling on soil physical properties and dry matter production on a Brown Soil in Southland, New Zealand. New Zealand Journal of Agricultural Research. [print] June 43(2): 259-268. {a} AgResearch, C/- Soil and Physical Sciences Group, Soil, Plant and Ecological Sciences Division, Lincoln University, Canterbury, New Zealand

Ball, G. R., B. D. Palmer, et al. (2000). Identification of non-linear influences on the seasonal ozone dose-response of sensitive and resistant clover clones using artificial neural networks. Ecological Modelling. [print] 129(2-3): 153-168. {a} Department of Computing, Faculty of Engineering and Computing, Nottingham Trent University, Burton Street, Nottingham, NG1 4BU, UK

Almeida, J. P. F., U. A. Hartwig, et al. (2000). Evidence that P deficiency induces N feedback regulation of symbiotic N2 fixation in white clover (Trifolium repens L.). Journal of Experimental Botany. [print] July 51(348): 1289-1297. {a} Institute of Plant Sciences, Swiss Federal Institute of Technology, Universitatstrasse 2, 8092, Zurich, Switzerland

de, M. J., J. J. Weinman, et al. (2000). Anthocyanin regulatory gene expression in transgenic white clover can result in an altered pattern of pigmentation. Australian Journal of Plant Physiology. [print] 27(7): 659-667. {a} Division of Plant Industry, CSIRO, Canberra, ACT, 2601, Australia

Foo, L. Y., Y. Lu, et al. (2000). The phenols and prodelphinidins of white clover flowers. Phytochemistry Oxford. [print] June 54(5): 539-548. {a} Industrial Research, Lower Hutt, New Zealand

Elgersma, A., H. Schlepers, et al. (2000). Interactions between perennial ryegrass (Lolium perenne L.) and white clover (Trifolium repens L.) under contrasting nitrogen availability: Productivity, seasonal patterns of species composition, N2 fixation, N transfer and N recovery. Plant and Soil. [print] 221(2): 281-299. {a} C.T. de Wit Graduate School for Production Ecology and Resource Conservation (PE and RC), Group Crop and Weed Ecology, Wageningen University, Haarweg 333, 6709 RZ, Wageningen, Netherlands

Jones, R. M., G. A. Bunch, et al. (2000). A visual procedure for estimating stolon length of white clover per unit area in grazed pastures. New Zealand Journal of Agricultural Research. [print] June 43(2): 291-294. {a} CSIRO Tropical Agriculture, Meiers Rd, Indooroopilly, QLD, 4068, Australia

Burggraaf, V. T. and E. R. Thom (2000). Contamination and persistence of endophyte-free ryegrass pastures established by spray-drilling, and intensively grazed by dairy cows in the Waikato region of New Zealand. New Zealand Journal of Agricultural Research. [print] June 43(2): 163-173. {a} Dairying Research Corporation, Hamilton, New Zealand

Caradus, J. R., D. R. Woodfield, et al. (2000). Response to selection for node appearance rate of white clover. New Zealand Journal of Agricultural Research. [print] June 43(2): 157-162. {a} AgResearch Grasslands, Palmerston North, New Zealand

Mosquera, M. R. and R. A. Gonzalez (1999). Management effect on sward evolution in dairy systems. Investigacion Agraria Produccion y Proteccion Vegetales. [print] 14(1-2): 101-106. {a} Escuela Politecnica Superior, Universidad de Santiago de Compostela, Campus de Lugo, 27002, Lugo, Spain

McGorum, B. C., S. C. Fry, et al. (2000). Properties of herbage in relation to equine dysautonomia: Biochemical composition and antioxidant and prooxidant actions. Journal of Agricultural and Food Chemistry. [print] June 48(6): 2346-2352. {a} Easter Bush Veterinary Centre, University of Edinburgh, Edinburgh, UK

Kakes, P. and A. N. Chardonnens (2000). Cyanotypic frequencies in adjacent and mixed populations of Trifolium occidentale Coombe and Trifolium repens L. are regulated by different mechanisms. Biochemical Systematics and Ecology. [print] August 28(7): 633-649. {a} Ecology and Ecotoxicology of Plants, Faculty of Biology, Vrije Universiteit, De Boelelaan 1087, 1081 HV, Amsterdam, Netherlands

Mills, G., G. Ball, et al. (2000). Development of a multi-factor model for predicting the effects of ambient ozone on the biomass of white clover. Environmental Pollution. [print] 109(3): 533-542. {a} Bangor Research Unit, Institute of Terrestrial Ecology, Deiniol Road, Bangor, LL57 2UP, UK

Postiglione, L., M. Fagnano, et al. (2000). Response to ambient ozone of two white clover (Trifolium repens L.cv. "Regal") clones, one resistant and one sensitive, grown in a Mediterranean environment. Environmental Pollution. [print] 109(3): 525-531. {a} Dipartimento Ingegneria Agraria ed Agronomia del Territorio, Universita di Napoli, Via Universita 100, I-80055, Portici, NA, Italy

Min, B. R., W. C. McNabb, et al. (2000). Solubilization and degradation of ribulose-1,5-bisphosphate carboxylase/oxygenase (EC 4.1.1.39; Rubisco) protein from white clover (Trifolium repens) and Lotus corniculatus by rumen microorganisms and the effect of condensed tannins on these processes. Journal of Agricultural Science. [print] May 134(3): 305-317. {a} Nutrition and Behavior Group, AgResearch, Grasslands Research Centre, Palmerston North, New Zealand

Hayes, J. E., R. J. Simpson, et al. (2000). The growth and phosphorus utilisation of plants in sterile media when supplied with inositol hexaphosphate, glucose 1-phosphate or inorganic phosphate. Plant and Soil. [print] 220(1-2): 165-174. {a} CSIRO Plant Industry, Canberra, ACT, 2601, Australia

Pol, M., D. Golebiowska, et al. (1999). Influence of enhanced concentration of carbon dioxide and moderate drought on fluorescence induction in white clover (Trifolium repens L.). Photosynthetica Prague. [print] 37(4): 537-542. {a} Department of Physics, University of Agriculture, ul. Papieza Pmvla VI nr. 3, 71-459, Szczecin, Poland

Arsenos, G., D. Zygoyjannis, et al. (2000). The effect of breed slaughter weight and nutritional management on cholesterol content of lamb carcasses. Small Ruminant Research. [print] June 36(3): 275-283. {a} Department of Management and Health, Animal Biology Division, Scottish Agricultural College, Bush-Estate, Penicuik, EH26 OPH, UK

Scott, J. M., K. J. Hutchinson, et al. (2000). Quantifying the sustainability of grazed pastures on the Northern Tablelands of New South Wales. Australian Journal of Experimental Agriculture. [print] 40(2): 257-265. {a} Agronomy and Soil Science, University of New England, Armidale, NSW, 2351, Australia

Kowalenko, C. G. and S. Bittman (2000). Within-season grass yield and nitrogen uptake, and soil nitrogen as affected by nitrogen applied at various rates and distributions in a high rainfall environment. Canadian Journal of Plant Science. [print] April 80(2): 287-301. {a} Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, Agassiz, BC, V0M 1A0, Canada

Bittman, S. and C. G. Kowalenko (2000). Within-season grass herbage crude-protein- and nitrate-N concentrations as affected by rates and seasonal distribution of fertilizer nitrogen in a high yearly rainfall climate. Canadian Journal of Plant Science. [print] April 80(2): 277-285. {a} Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, Agassiz, BC, V0M 1A0, Canada

Greer, D. H., W. A. Laing, et al. (2000). The effect of perturbations in temperature and photon flux density on the growth and photosynthetic responses of five pasture species to elevated CO2. Australian Journal of Plant Physiology. [print] 27(4): 301-310. {a} HortResearch, Palmerston North Research Centre, Palmerston North, New Zealand

Min, B. M. and J. H. Kim (2000). Plant succession and interaction between soil and plants after land reclamation on the west coast of Korea. Journal of Plant Biology. [print] March 43(1): 41-47. {a} Department of Science Education, Dankook University, Seoul, 140-714, South Korea

Strong, W. L. (2000). Vegetation development on reclaimed lands in the Coal Valley Mine of western Alberta, Canada. Canadian Journal of Botany. [print] Jan 78(1): 110-118. {a} Department of Geography, University of Calgary, 2500 University Drive N.W., Calgary, AB, T2N 1N4, Canada

Pol, M., D. Golebiowska, et al. (2000). Analysis of an influence of enhanced concentration of carbon dioxide (700 ppm) and moderate drought on the parameters of fluorescence induction at white clover (Trifolium repens L.). Bulletin of the Polish Academy of Sciences Biological Sciences. [print] March 48(1): 21-27. {a} Department of Physics, University of Agriculture, Ul. Papieza Pawla Vi Nr 3, 71-459, Szczecin, Poland

Zhang, C. and M. T. McManus (2000). Identification and characterisation of two distinct acid phosphatases in cell walls of roots of white clover. Plant Physiology and Biochemistry Paris. [print] April 38(4): 259-270. {a} Institute of Molecular BioSciences, Massey University, Palmerston North, New Zealand

Schulz, S., J. D. H. Keatinge, et al. (2000). Effect of legume management on forage production and residual effects on upland rice. Journal of Agronomy and Crop Science. [print] May 184(3): 173-180. {a} International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria

Lawrence, M. J. (2000). Population genetics of the homomorphic self-incompatibility polymorphisms in flowering plants. Annals of Botany London. March 85(Suppl. A): 221-226. {a} Wolfson Laboratory for Plant Molecular Biology, Plant Genetics and Cell Biology Group, School of Biosciences, University of Birmingham, Birmingham, B15 2TT, UK

Mercer, C. F., D. B. J. Van, et al. (2000). Progress in recurrent selection and in crossing cultivars with white clover resistant to the clover root-knot nematode Meloidogyne trifoliophila. New Zealand Journal of Agricultural Research. March 43(1): 41-48. {a} AgResearch Grasslands, Palmerston North, New Zealand

Tava, A. and P. Annicchiarico (2000). Spectrophotometer-aided evaluation of cyanogenic potential in white clover (Trifolium repens L.). Phytochemical Analysis. May June 11(3): 169-173. {a} Istituto Sperimentale per le Colture Foraggere, viale Piacenza 29, 26900, Lodi, Italy

Sawada, H., H. Hatanaka, et al. (2000). Within-inflorescence variation in seed set of white clover (Trifolium repens L.) and its consequence for seed size variation. Grassland Science. Jan. 45(4): 329-334. {a} Faculty of Agriculture, Shizuoka University, Ooya 836, Shizuoka, 422-8529, Japan

Hopkins, A., M. G. Lambert, et al. (2000). Determination of management and topographic influences on the balance between resident and 'Grasslands Huia' white clover (Trifolium repens) in an upland pasture using isozyme analysis. Journal of Agricultural Science. March 134(2): 137-145. {a} Grasslands Research Centre, AgResearch, Palmerston North, New Zealand

Brant, V., J. Santrucek, et al. (2000). The effect of different ways and frequency of harvesting of set aside arable land on the weed infestation. Zeitschrift fuer Pflanzenkrankheiten und Pflanzenschutz(17): 105-112. {a} Tschechische Landw. Universitat, CZ-165 21, Prag 6-Suchdol, Czech Republic

Rigueiro, R. A., L. M. R. Mosquera, et al. (2000). Pasture production and tree growth in a young pine plantation fertilized with inorganic fertilizers and milk sewage in northwestern Spain. Agroforestry Systems 48(3): 245-256. {a} Departamento de Produccion Vegetal, Escuela Politecnica Superior, Lugo, 27002, Spain

Marchiol, L., S. Cesco, et al. (2000). Germination and initial root growth of four legumes as affected by landfill biogas atmosphere. Restoration Ecology. March 8(1): 93-98. {a} Dipartimento di Produzione Vegetale e Tecnologie Agrarie, Universita di Udine, Via delle Scienze 208, 33100, Udine, Italy

Ye, Z. H., J. W. C. Wong, et al. (2000). Revegetation of Pb/Zn mine tailings, Guangdong Province, China. Restoration Ecology. March 8(1): 87-92. {a} Department of Biology, Institute for Natural Resources and Waste Management, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China

Mullen, R. W., S. B. Phillips, et al. (2000). Forage yield and crude protein of interseeded legume-bermudagrass mixtures as affected by phosphorus fertilizer. Journal of Plant Nutrition. May 23(5): 673-681. {a} Department of Plant and Soil Science, Oklahoma State University, 044 Agriculture Hall, Stillwater, OK, 74078, USA

Finne, M. A., O. A. Rognli, et al. (2000). Genetic variation in a Norwegian germplasm collection of white clover (Trifolium repens L.). Euphytica 112(1): 57-68. {a} Holt Research Centre, The Norwegian Crop Research Institute, N-9002, Tromso, Norway

Finne, M. A., O. A. Rognli, et al. (2000). Genetic variation in a Norwegian germplasm collection of white clover (Trifolium repens L.). Euphytica 112(1): 45-56. {a} Holt Research Centre, The Norwegian Crop Research Institute, N-9002, Tromso, Norway

Finne, M. A., O. A. Rognli, et al. (2000). Genetic variation in a Norwegian germplasm collection of white clover (Trifolium repens L.). Euphytica 112(1): 33-44. {a} Holt Research Centre, The Norwegian Crop Research Institute, N-9002, Tromso, Norway

Lodge, G. M. (2000). Competition among seedlings of perennial grasses, subterranean clover, white clover, and annual ryegrass in replacement series mixtures. Australian Journal of Agricultural Research 51(3): 377-383. {a} Tamworth Centre for Crop Improvement, NSW Agriculture, RMB 944, Tamworth, NSW, 2340, Australia

Paine, L. K., D. Undersander, et al. (1999). Pasture growth, production, and quality under rotational and continuous grazing management. Journal of Production Agriculture. Oct. Dec. 12(4): 569-577. {a} Columbia County Extension, Univ. of Wisconsin, Portage, WI, 53901, USA

Gautier, H., R. Mech, et al. (2000). 3D architectural modelling of aerial photomorphogenesis in white clover (Trifolium repens L.) using L-systems. Annals of Botany London. March 85(3): 359-370. {a} Departement Environnement et Agronomie, Station d'Ecophysiologie des Plantes Fourrageres (SEPF), INRA, 86600, Lusignan, France

Watson, C. A., J. M. Ross, et al. (2000). Environment-induced modifications to root longevity in Lolium perenne and Trifolium repens. Annals of Botany London. March 85(3): 397-401. {a} Land Management Department, Environmental Division, SAC, Craibstone Estate, Aberdeen, AB21 9YA, UK

Abdin, O. A., X. M. Zhou, et al. (2000). Cover crops and interrow tillage for weed control in short season maize (Zea mays). European Journal of Agronomy. March 12(2): 93-102. {a} Department of Plant Science, McGill University, 21111 Lakeshore Road, Macdonald Campus, Ste. Anne de Bellevue, Quebec, H9X 3V9, Canada

Silva, R. G., K. C. Cameron, et al. (2000). Effect of macropore flow on the transport of surface-applied cow urine through a soil profile. Australian Journal of Soil Research 38(1): 13-23. {a} Centre for Soil and Environmental Quality, Lincoln University, Canterbury, New Zealand

Hanninen, K., R. Ohtonen, et al. (1999). Effects of leguminous ground cover competition on red birch and soil nutrient status in the nursery. Plant and Soil 216(1-2): 129-138. {a} Hame Polytechnic Lepaa, FIN-14610, Lepaa, Finland

Baggs, E. M., C. A. Watson, et al. (2000). The fate of nitrogen from incorporated cover crop and green manure residues. Nutrient Cycling in Agroecosystems. Feb. 56(2): 153-163. {a} Department of Biological Sciences, Wye College, University of London, Wye, Ashford, Kent, TN25 5AH, UK

Williams, P. H. and R. J. Haynes (2000). Transformations and plant uptake of urine N and S in long and short-term pastures. Nutrient Cycling in Agroecosystems. Feb. 56(2): 109-116. {a} Canterbury Agriculture and Science Centre, New Zealand Institute for Crop and Food Research Ltd, Christchurch, New Zealand

Annicchiarico, P. and E. Piano (2000). Response of white clover genotypes to evaluation environments of dense and spaced planting, and implications for selection. Euphytica 111(2): 111-120. {a} Istituto Sperimentale per le Colture Foraggere, 29 Viale Piacenza, I-26900, Lodi, Italy

McLaughlin, M. R. and G. A. Pederson (2000). Registration of PSVR1 white clover germplasm. Crop Science. Jan. Feb. 40(1): 298-299. {a} Crop Science Res. Lab., Waste Management and Forage Res. Unit, USDA-ARS, Mississippi State, MS, 39762-5367, USA

Casler, M. D. and S. E. van (2000). Patterns of variation in a collection of meadow fescue accessions. Crop Science. Jan. Feb. 40(1): 248-255. {a} Dep. of Agronomy, Univ. of Wisconsin-Madison, Madison, WI, 53706-1597, USA

Brandsaeter, L. O., T. Smeby, et al. (2000). Winter annual legumes for use as cover crops in row crops in northern regions: II. Frost resistance study. Crop Science. Jan. Feb. 40(1): 175-181. {a} Plant Protection Centre, Dep. of Herbology, Norwegian Crop Research Institute, N-1432, Aas, Norway

Eriksen, J. and M. Askegaard (2000). Sulphate leaching in an organic crop rotation on sandy soil in Denmark. Agriculture Ecosystems and Environment. April 78(2): 107-114. {a} Department of Crop Physiology and Soil Science, Danish Institute of Agricultural Sciences, DK-8830, Tjele, Denmark

Heraut, B. V., C. Robin, et al. (1999). Light quality (red:far-red ratio): Does it affect photosynthetic activity, net CO2 assimilation, and morphology of young white clover leaves? Canadian Journal of Botany. Oct. 77(10): 1425-1431. {a} Unite associee de l'Institut National de la Recherche Agronomique, Agronomie et Environnement, ENSAIA, Vandoeuvre-les-Nancy Cedex, F-54505, France

Min, B. M. and J. H. Kim (1999). Plant distribution in relation to soil properties of reclaimed lands on the west coast of Korea. Journal of Plant Biology. Dec. 42(4): 279-286. {a} Department of Science Education, Dankook University, Seoul, 140-714, South Korea

Montalbini, P. (2000). Xanthine dehydrogenase from leaves of leguminous plants: Purification, characterization and properties of the enzyme. Journal of Plant Physiology. Jan. 156(1): 3-16. {a} Istituto di Patologia vegetale, Universita di Perugia, Borgo XX Giugno 74, 06121, Perugia, Italy

Concha, M. A. and A. M. Nicol (2000). Selection by sheep and goats for perennial ryegrass and white clover offered over a range of sward height contrasts. Grass and Forage Science. March 55(1): 47-58. {a} Animal and Food Sciences Division, Lincoln University, Canterbury, New Zealand

Muto, P. J. and R. C. Martin (2000). Effects of pre-treatment, renovation procedure and cultivar on the growth of white clover sown into a permanent pasture under both grazing and mowing regimes. Grass and Forage Science. March 55(1): 59-68. {a} Department of Plant Science, Nova Scotia Agricultural College, Truro, Nova Scotia, B2N 5E3, Canada

Laidlaw, A. S., C. J. Watson, et al. (2000). Implications of nitrogen fertilizer applications and extended grazing for the N economy of grassland. Grass and Forage Science. March 55(1): 37-46. {a} Plant Testing Station, 50 Houston Road, Crossnacreevy, Belfast, BT6 9SH, UK

Vinther, F. P. and E. S. Jensen (2000). Estimating legume N2 fixation in grass-clover mixtures of a grazed organic cropping system using two 15N methods. Agriculture Ecosystems and Environment. April 78(2): 139-147. {a} Department Soil Science and Plant Physiology, Research Centre Foulum, Danish Institute of Agricultural Sciences, DK-8830, Tjele, Denmark

Hoveland, C. S., J. H. Bouton, et al. (2000). Fungal endophyte effects on production of legumes in association with tall fescue. Agronomy Journal. Nov. Dec. 91(6): 897-902. {a} Dep. of Crop and Soil Sci., Univ. of Georgia, Athens, GA, 30602, USA

Sanderson, M. A. and G. F. Elwinger (2000). Grass species and cultivar effects on establishment of grass-white clover mixtures. Agronomy Journal. Nov. Dec. 91(6): 889-897. {a} ARS Pasture Systems and Watershed Management Res. Lab., USDA, Curtin Rd., Bldg. 3702, University Park, PA, 16802-3702, USA

Adams, W. A. and M. T. Jan (1999). Utilization of nitrogen accumulated by a clover containing ley following cultivation. Soil Use and Management. Dec. 15(4): 247-253. {a} Soil Science Unit, Institute of Biological Sciences, University of Wales, Aberystwyth, SY23 3DE, UK

Lindroth, R. L., R. W. Hofmann, et al. (2000). Population differences in Trifolium repens L. response to ultraviolet-B radiation: Foliar chemistry and consequences for two lepidopteran herbivores. Oecologia Berlin. Jan. 122(1): 20-28. {a} Department of Entomology, University of Wisconsin, 1630 Linden Dr., 237 Russell Labs, Madison, WI, 53706, USA

Stout, W. L., S. L. Fales, et al. (2000). Water quality implications of nitrate leaching from intensively grazed pasture swards in the northeast US. Agriculture Ecosystems and Environment. Feb. 77(3): 203-210. {a} Pasture Systems and Watershed Management Research Laboratory, United States Department of Agriculture/Agricultural Research Service, Curtin Road, University Park, PA, 16802-3702, USA

Pavao, Z. M. A., J. C. Waller, et al. (1999). Methane emissions of beef cattle grazing tall fescue pastures at three levels of endophyte infestation. Journal of Environmental Quality. Nov. Dec. 28(6): 1963-1969. {a} Dep. Plant and Soil Sciences, Univ. of Tennessee, Knoxville, TN, 37901-1071, USA

Wang, S. and R. D. Riggs (1999). Variations in host preference among and within populations of Heterodera trifolii and related species. Journal of Nematology. Dec. 31(4): 407-417. {a} Department of Plant Pathology, University of Arkansas, Fayetteville, AR, 72701, USA

McManus, M. T., R. L. Bieleski, et al. (2000). Pinitol accumulation in mature leaves of white clover in response to a water deficit. Environmental and Experimental Botany. Feb. 43(1): 11-18. {a} Institute of Molecular BioSciences, Massey University, Palmerston North, New Zealand

McKenzie, M. J., V. Mett, et al. (1999). Modified ELISA for the detection of neomycin phosphotransferase II in transformed plant species. Plant Cell Reports. Jan. 19(3): 286-289. {a} College of Sciences, Institute of Molecular BioSciences, Massey University, Palmerston North, New Zealand

Kakes, P. and H. W. J. Hakvoort (1999). Aglycon specificity of the cyanogenic beta-glucosidases of leaves of Trifolium species and Cassava (Manihot esculenta). Thaiszia 9(1): 73-80. {a} Faculty of Biology, Department of Ecology and Ecotoxicology, Free University, de Boelelaan 1087, 1081 HV, Amsterdam, Netherlands

Viette, M., C. Tettamanti, et al. (2000). Preference for acyanogenic white clover (Trifolium repens) in the vole Arvicola terrestris. II. Generalization and further investigations. Journal of Chemical Ecology. Jan. 26(1): 101-122. {a} Department of Biology, Ecology and Biology of Organisms, University of Fribourg, Perolles, CH-1700, Fribourg, Switzerland

Scott, D. (1999). Sustainability of New Zealand high-country pastures under contrasting development inputs. 1. Site, and shoot nutrients. New Zealand Journal of Agricultural Research. Dec. 42(4): 365-383. {a} AgResearch, Lincoln, New Zealand

Mercer, C. F., D. B. J. Van, et al. (1999). Effectiveness of recurrent selection of white clover (Trifolium repens) for resistance to New Zealand populations of clover cyst nematode (Heterodera trifolii). Nematology . Aug. 1(5): 449-455. {a} AgResearch Grasslands, Palmerston North, New Zealand

Cosgrove, G. P. and J. H. Niezen (2000). Intake and selection for white clover by grazing lambs in response to gastrointestinal parasitism. Applied Animal Behaviour Science. Feb. 66(1-2): 71-85. {a} Grasslands Research Centre, AgResearch, Palmerston North, New Zealand

Zhu, W. Y., S. A. H. Kingston, et al. (1999). Evidence of a role for plant proteases in the degradation of herbage proteins in the rumen of grazing cattle. Journal of Dairy Science. Dec. 82(12): 2651-2658. {a} Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EB, UK

Wasilowska, A. (1999). Spreading of alien plant species along tourist tracks in Karkonosze Mts. Polish Journal of Ecology 47(4): 399-408. {a} Department of Bioindication, Institute of Ecology, Polish Academy of Sciences, Dziekanow Lesny near Warsaw, 05-092, Lomianki, Poland

Carmona, D. M. and D. A. Landis (1999). Influence of refuge habitats and cover crops on seasonal activity-density of ground beetles (Coleoptera: Carabidae) in field crops. Environmental Entomology. Dec. 28(6): 1145-1153. {a} Facultad de Ciencias Agrarias, UNMdP-INTA Balcarce, Balcarce, Buenos Aires, Argentina

Stoyanova, M. (1999). Medicinal and forest-fruit species from the southern Rila Mountain. Nauka za Gorata: 36-39. {a} Forest Research Institute, Sofia, Bulgaria

Hayes, J. E., A. E. Richardson, et al. (1999). Phytase and acid phosphatase activities in extracts from roots of temperate pasture grass and legume seedlings. Australian Journal of Plant Physiology 26(8): 801-809. {a} CSIRO Plant Industry, Canberra, ACT, 2601, Australia

Stockdale, C. R. (1999). Effect of length of the period of supplementation with concentrates on pasture intake and performance of grazing dairy cows. Australian Journal of Experimental Agriculture 39(7): 803-809. {a} Department of Natural Resources and Environment, Kyabram Dairy Centre, Institute of Sustainable Irrigated Agriculture, 120 Cooma Road, Kyabram, VIC, 3620, Australia

Brink, G. E., G. A. Pederson, et al. (1999). Growth of white clover ecotypes, cultivars, and germplasms in the southeastern USA. Crop Science. Nov. Dec. 39(6): 1809-1814. {a} USDA-ARS, Mississippi State, MS, 39762, USA

Corbel, G., C. Robin, et al. (1999). Regrowth of white clover after chilling: Assimilate partitioning and vegetative storage proteins. Crop Science. Nov. Dec. 39(6): 1756-1761. {a} Unite Associee "Agronomie et Environnement", E.N.S.A.I.A.-INRA, 54505, Vandoeuvre-les-Nancy Cedex, France

Blumenthal, M. J., A. M. Bowman, et al. (1999). Establishment, growth and persistence of greater lotus (Lotus uliginosus) at six sites in eastern Australia. Australian Journal of Experimental Agriculture 39(7): 819-827. {a} NSW Agriculture, Orange, NSW, 2800, Australia

Martin, R. C., P. R. Greyson, et al. (1999). Competition between corn and a living mulch. Canadian Journal of Plant Science. Oct. 79(4): 579-586. {a} Plant Science Department, Nova Scotia Agricultural College, Truro, Nova Scotia, B2N 5E3, Canada

Zhu, Y. G., A. S. Laidlaw, et al. (2000). The specificity of arbuscular mycorrhizal fungi in perennial ryegrass-white clover pasture. Agriculture Ecosystems and Environment. Feb. 77(3): 211-218. {a} Department of Soil Science, University of Adelaide, Glen Osmond, SA, 5064, Australia

Worland, S., N. Guerreiro, et al. (1999). Rhizobium purine auxotrophs, perturbed in nodulation, have multiple changes in protein synthesis. Australian Journal of Plant Physiology 26(6): 511-519. {a} Plant Microbe Interaction Group, Research School of Biological Sciences, Australian National University, Canberra, ACT, Australia

van, d. W. T. J., R. R. Sherlock, et al. (1999). Nitrous oxide emissions and methane oxidation by soil following cultivation of two different leguminous pastures. Biology and Fertility of Soils. Nov. 30(1-2): 52-60. {a} Soil, Plant and Ecological Sciences Division, Lincoln University, Canterbury, New Zealand

Henwood, B. P. (1999). Observations on the life history of Phyllonorycter nigrescentella (Logan, 1851) (Lepidoptera: Gracillariidae). Entomologist's Gazette. Oct. 50(4): 288. {a} 6 Lakeland, Abbotskerswell, Newton Abbot, Devon, UK

Smith, J. D., L. A. Staehelin, et al. (1999). Early root cap development and graviresponse in white clover (Trifolium repens) grown in space and on a two-axis clinostat. Journal of Plant Physiology. Oct. 155(4-5): 543-550. {a} Space Life Sciences Research Branch, NASA Ames Research Center, Moffett Field, CA, USA

Chiy, P. C. and C. J. C. Phillips (1999). Effects of sodium fertiliser on the distribution of trace elements, toxic metals and water-soluble carbohydrates in grass and clover fractions. Journal of the Science of Food and Agriculture. Nov. 79(14): 2017-2024. {a} Department of Clinical Veterinary Medicine, University of Cambridge, Cambridge, CB3 0ES, UK

Almeida, J. P. F., A. Luscher, et al. (1999). Partitioning of P and the activity of root acid phosphatase in white clover (Trifolium repens L.) are modified by increased atmospheric CO2 and P fertilisation. Plant and Soil 210(2): 159-166. {a} Escola Superior Agraria, I.P., 6000, Castelo Branco, Portugal

Wardle, D. A., K. I. Bonner, et al. (1999). Plant removals in perennial grassland: Vegetation dynamics, decomposers, soil biodiversity, and ecosystem properties. Ecological Monographs. Nov. 69(4): 535-568. {a} Landcare Research, Lincoln, 8152, New Zealand

Saito, M. (1999). Mycorrhizal symbiosis in grassland ecosystem. Japanese Journal of Ecology Otsu. Aug. 49(2): 139-144. {a} National Grassland Research Institute, Nishi-nasuno, Tochigi, 329-2793, Japan

Realini, C. E., J. Hodgson, et al. (1999). Effect of sward surface height on herbage intake and performance of finishing beef cattle. New Zealand Journal of Agricultural Research. June 42(2): 155-164. {a} Institute of Natural Resources, Massey University, Palmerston North, New Zealand

Mosquera, L. R. and R. A. Gonzalez (1999). Pasture production in Northern Spain dairy systems. New Zealand Journal of Agricultural Research. June 42(2): 125-132. {a} Departamento de Produccion Vegetal Escuela Politecnica Superior de Ingenieros Agronomos, Universidade de Santiago de Compostela, Campus de Lugo, 27002, Lugo, Spain

Pederson, G. A., G. E. Brink, et al. (1999). Growth of United States versus New Zealand white clover cultivars in diverse grasses in Mississippi, USA. New Zealand Journal of Agricultural Research. June 42(2): 115-123. {a} Crop Science Res. Lab. Waste Mgt. and Forage Res. Unit, USDA-ARS, Mississippi State, MS, 39762, USA

Di, H. J., K. C. Cameron, et al. (1999). Contributions to nitrogen leaching and pasture uptake by autumn-applied dairy effluent and ammonium fertilizer labeled with 15N isotope. Plant and Soil 210(2): 189-198. {a} Centre for Soil and Environmental Quality, Lincoln University, Canterbury, New Zealand

Lucero, D. W., P. Grieu, et al. (1999). Effects of water deficit and plant interaction on morphological growth parameters and yield of white clover (Trifolium repens L.) and ryegrass (Lolium perenne L.) mixtures. European Journal of Agronomy. Nov. 11(3-4): 167-177. {a} Unite associee, Agronomie et Environnement, INRA, ENSAIA, 2 Avenue de la Foret de Haye, F-54500, Vandoeuvre-les-Nancy, France

Singh, D. K., P. W. G. Sale, et al. (1999). High phosphorus supply increases persistence and growth of white clover in grazed dairy pastures during dry summer conditions. Australian Journal of Experimental Agriculture 39(5): 579-585. {a} CSIRO Plant Industry, Frank Wise Institute, Kununurra, WA, 6743, Australia

Stockdale, C. R. (1999). Effects of season and time since defoliation on the nutritive characteristics of three irrigated perennial pasture species in northern Victoria 2. Macro-minerals. Australian Journal of Experimental Agriculture 39(5): 567-577. {a} Department of Natural Resources and Environment, Institute of Sustainable Irrigated Agriculture, 120 Cooma Road, Kyabram Dairy Centre, Kyabram, VIC, 3620, Australia

Stockdale, C. R. (1999). Effects of season and time since defoliation on the nutritive characteristics of three irrigated perennial pasture species in northern Victoria 1. Energy, protein and fibre. Australian Journal of Experimental Agriculture 39(5): 555-565. {a} Department of Natural Resources and Environment, Institute of Sustainable Irrigated Agriculture, 120 Cooma Road, Kyabram Dairy Centre, Kyabram, VIC, 3620, Australia

Kiso, S. and M. Noshiro (1999). Management methods for early harvesting of timothy (Phleum pratense L.) dominant meadows. 3. The vertical distribution of leaf area and relative light intensity during the regrowth after 1st cut in early harvested timothy-white clover (Trifolium repens L.) mixtures. Grassland Science. July 45(2): 170-175. {a} Hokkaido Tenpoku Agricultural Experiment Station, Hamatonbetsu, Hokkaido, 098-5736, Japan

Ide, Y., H. Hayashi, et al. (1999). Effect of dissemination of seeds along with cattle dung on the propagation of Kentucky bluegrass (Poa pratensis L.). 2. Seasonal changes in the recovery and viability of seeds in cattle dung on the pasture and the invasion to the sloping Sasa-type pasture with the seeds embedded in cattle dung. Grassland Science. July 45(2): 163-169. {a} Chugoku National Agricultural Experiment Station, Kawai, Oda, Shimane, 694-0013, Japan

de, S. F. A. and B. R. L. Louro (1999). Ontogeny of Glomus clarum in Ri T-DNA transformed roots. Mycologia . March April 91(2): 343-350. {a} EMBRAPA Agrobiologia, km 47 Antiga Rodovia Rio-Sao Paulo, Seropedica, CEP 23851-970, Rio de Janeiro, Brazil

Griffith, G. S., R. Cook, et al. (1999). Effects of temperature on stem nematode (Ditylenchus dipsaci) infestation of white clover (Trifolium repens) swards. Nematology . July 1(4): 415-420. {a} Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, SY23 3EB, UK

Barthram, G. T., G. R. Bolton, et al. (1999). The effects of cutting intensity and neighbour species on plants of Lolium perenne, Poa annua, Poa trivialis and Trifolium repens. Agronomie Paris. Aug. Sept. 19(6): 445-456. {a} Hartwood Research Station, Macaulay Land Use Research Institute, Shotts, ML7 4JY, UK

Haynes, R. J. (1999). Labile organic matter fractions and aggregate stability under short-term, grass-based leys. Soil Biology and Biochemistry. Nov. 31(13): 1821-1830. {a} Department of Agronomy, University of Natal, Scottsville, Pietermaritzburg, 3209, South Africa

Thom, E. R., D. A. Clark, et al. (1999). Growth, persistence, and alkaloid levels of endophyte-infected and endophyte-free ryegrass pastures grazed by dairy cows in northern New Zealand. New Zealand Journal of Agricultural Research. Sept. 42(3): 241-253. {a} Dairying Research Corporation, Hamilton, New Zealand

Campbell, B. D., N. D. Mitchell, et al. (1999). Climate profiles of temperate C3 and subtropical C4 species in New Zealand pastures. New Zealand Journal of Agricultural Research. Sept. 42(3): 223-233. {a} AgResearch Grasslands, Palmerston North, New Zealand

Annicchiarico, P., E. Piano, et al. (1999). Heritability of, and genetic correlations among, forage and seed yield traits in Ladino white clover. Plant Breeding. Sept. 118(4): 341-346. {a} Istituto Sperimentale per le Colture Foraggere, 29 viale Piacenza, I-26900, Lodi, Italy

Willoughby, I. (1999). Future alternatives to the use of herbicides in British forestry. Canadian Journal of Forest Research. July 29(7): 866-874. {a} Forest Research, Great Britain Forestry Commission, Alice Holt Lodge, Wrecclesham, Farnham, Surrey, GU10 4LH, UK

Reverter, M., T. Lundh, et al. (1999). Ileal amino acid digestibilities in pigs of barley-based diets with inclusion of lucerne (Medicago sativa), white clover (Trifolium repens), red clover (Trifolium pratense) or perennial ryegrass (Lolium perenne). British Journal of Nutrition. Aug. 82(2): 139-147. {a} Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, S-750 07, Uppsala, Sweden

Stewart, D. P. C. and A. K. Metherell (1999). Carbon (13C) uptake and allocation in pasture plants following field pulse-labelling. Plant and Soil 210(1): 61-73. {a} AgResearch, c/- Soil and Physical Sciences, Lincoln University, Canterbury, New Zealand

Shiel, R. S., T. A. M. A. El, et al. (1999). The influence of fertilizer nitrogen, white clover content and environmental factors on the nitrate content of perennial ryegrass and ryegrass/white clover swards. Grass and Forage Science. Sept. 54(3): 275-285. {a} Agriculture Department, University of Newcastle, Newcastle upon Tyne, NE1 7RU, UK

Watson, C. J. and P. Poland (1999). Change in the balance of ammonium-N and nitrate-N content in soil under grazed grass swards over 7 years. Grass and Forage Science. Sept. 54(3): 248-254. {a} Agricultural and Environmental Science Division, Department of Agriculture for Northern Ireland, Newforge Lane, Belfast, BT9 5PX, UK

Haigh, P. M. (1999). Effluent production from grass silages treated with additives and made in large-scale bunker silos. Grass and Forage Science. Sept. 54(3): 208-218. {a} Pwllpeiran Research Centre, ADAS, Cwmystwyth, Aberystwyth, Ceredigion, SY23 4AB, UK

Wilman, D. and N. Ahmad (1999). In vitro digestibility, neutral detergent fibre, lignin and cell wall thickness in plant parts of three forage species. Journal of Agricultural Science. Aug. 133(1): 103-108. {a} Welsh Institute of Rural Studies, University of Wales, Llanbadarn Campus, Aberystwyth, Ceredigion, SY23 3AL, UK

Nishiwaki, A., S. Sato, et al. (1999). The comparison of pasture vegetation between two dairy farms under diffrerent grazing management. Grassland Science. April 45(1): 52-58. {a} Faculty of Agriculture, Miyazaki University, Gakuen Kibanadai, Miyazaki, 889-2192, Japan

Lomas, L. W., J. L. Moyer, et al. (1999). Effect of interseeding legumes into endophyte-infected tall fescue pastures on forage production and steer performance. Journal of Production Agriculture. July Sept 12(3): 479-483. {a} Southeast Agric. Res. Cent., Kansas State Univ., Parsons, KS, 67357, USA

Mason, E. G. and B. Kirongo (1999). Responses of radiata pine clones to varying levels of pasture competition in a semiarid environment. Canadian Journal of Forest Research. July 29(7): 934-939. {a} School of Forestry, University of Canterbury, Christchurch, New Zealand

Blackstock, T. H. and R. H. Roberts (1998). Trifolium occidentale D. E. Coombe (Fabaceae) in Anglesey (V.C. 52). Watsonia . Aug. 22(2): 182-184. {a} Countryside Council for Wales, Penrhos Road, Bangor, Gwynedd, LL57 2HY, UK

Cresswell, A., N. R. S. Hamilton, et al. (1999). Evidence for root contraction in white clover (Trifolium repens L.). Annals of Botany London. Sept. 84(3): 359-369. {a} Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EB, UK

Lantinga, E. A., M. Nassiri, et al. (1999). Modelling and measuring vertical light absorption within grass-clover mixtures. Agricultural and Forest Meteorology. Aug. 96(1-3): 71-83. {a} C.T. De Wit Graduate School for Production Ecology (PE), Laboratory of Theoretical Production Ecology, Wageningen Agricultural University, 6700 AK, Wageningen, Netherlands

Grafton, C. E. E., Y. Ouyang, et al. (1999). Leguminous cover crops to enhance population development of Euseius tularensis (Acari: Phytoseiidae) in Citrus. Biological Control. Sept. 16(1): 73-80. {a} Kearney Agricultural Center, 9240 South Riverbend Avenue, Parlier, CA, 93648, USA

Habte, M., Y. C. Zhang, et al. (1999). Effectiveness of Glomus species in protecting white clover against nematode damage. Canadian Journal of Botany. Jan. 77(1): 135-139. {a} Department of Agronomy and Soil Science, University of Hawaii, 1910 East-West Road, Honolulu, HI, 96822, USA

Kerley, S. J. and S. C. Jarvis (1999). The use of nitrogen-15 natural abundance in white clover (Trifolium repens L.) to determine nitrogen fixation under different management practices. Biology and Fertility of Soils. Aug. 29(4): 437-440. {a} IACR Rothamsted, Harpenden Herts, AL5 2JQ, UK

McKenzie, F. R., M. J. Ryan, et al. (1999). Effect of rate and time of nitrogen application from autumn to midwinter on perennial ryegrass-white clover dairy pastures in western Victoria. 1. Growth and composition. Australian Journal of Agricultural Research 50(6): 1059-1065. {a} Department of Natural Resources and Environment, 78 Henna Street, Warrnambool, Vic., 3280, Australia

Chaudhary, L. B. (1998). LM and SEM studies on seeds of Trifolium L. (Leguminosae - Papilionoideae). Journal of Economic and Taxonomic Botany. March 22(3): 723-728. {a} Biodiversity and Taxonomy Division, National Botanical Research Institute, Rana Pratap Marg, Lucknow, 226 001, India

Alley, J. L., H. E. Garrett, et al. (1998). Forage legumes as living mulches for trees in agroforestry practices - Preliminary results. Agroforestry Systems 44(2-3): 281-291. {a} School of Natural Resources, University of Missouri, Columbia, MO, 65211, USA

Navas, M. L., E. Garnier, et al. (1999). Effect of competition on the responses of grasses and legumes to elevated atmospheric CO2 along a nitrogen gradient: Differences between isolated plants, monocultures and multi-species mixtures. New Phytologist. Aug. 143(2): 323-331. {a} U.F.R. de Biologie et Pathologie Vegetales, ENSA-M, Place Viala, 34060, Montpellier Cedex 2, France

Shah, P., Z. Ahmed, et al. (1999). Wild clover (Trifolium repens) an alternative substrate for spawn. Journal of Mycology and Plant Pathology. April 29(1): 124-125. {a} Defence Agricultural Research Laboratory, Pithoragarh, Uttar Pradesh, 262501, India

Auldist, D. E., K. L. Atkinson, et al. (1999). Utilisation of white clover silage fed alone or with maize silage by lactating dairy cows. Australian Journal of Experimental Agriculture 39(3): 237-246. {a} La Trobe University, Bundoora, Vic., 3083, Australia

McKenzie, F. R., J. L. Jacobs, et al. (1999). Effect of rate and time of nitrogen application from autumn to midwinter on perennial ryegrass-white clover dairy pastures in western Victoria. 2. Pasture nutritive value. Australian Journal of Agricultural Research 50(6): 1067-1072. {a} Department of Natural Resources and Environment, 78 Henna Street, Warrnambool, Vic., 3280, Australia

Frankow, L. B. E. (1999). Effects of adaptation to winter stress on biomass production, growth and morphology of three contrasting white clover cultivars. Physiologia Plantarum. June 106(2): 196-202. {a} Department of Ecology and Crop Production Science, SLU, S-750 07, Uppsala, Sweden

Jorgensen, F. V., E. S. Jensen, et al. (1999). Dinitrogen fixation in white clover grown in pure stand and mixture with ryegrass estimated by the immobilized 15N isotope dilution method. Plant and Soil. July 208(2): 293-305. {a} Department of Economics and Natural Resources, The Royal Veterinary and Agricultural University, Kirkegardsvej 3A, DK-2970, Horsholm, Denmark

Sammour, R. H. (1999). SDS-PAGE analysis of the seed proteins of some Trifolium taxa. Plant Varieties and Seeds. April 12(1): 11-21. {a} Department of Botany, Faculty of Science, Tanta University, Tanta, Egypt

Barone, M. and T. Frank (1999). Effects of plant extracts on the feeding behaviour of the slug Arion lusitanicus. Annals of Applied Biology. June 134(3): 341-345. {a} Zoological Institute, University of Bern, Baltzerstrasse 3, 3012, Bern, Switzerland

Fengrui, L. (1999). Severity of damage to Trifolium repens leaves by certain invertebrate species in mixed perennial ryegrass/white clover swards: Response to cultivar, cutting frequency and sward characteristics. Grass and Forage Science. June 54(2): 137-143. {a} Yale School of Forestry and Environmental Studies, Yale University, 205 Prospect Street, New Haven, CT, 06511, USA

Yeates, G. W., S. Saggar, et al. (1999). Increase in 14C-carbon translocation to the soil microbial biomass when five species of plant-parasitic nematodes infect roots of white clover. Nematology . June 1(3): 295-300. {a} Landcare Research, Palmerston North, New Zealand

Charmley, E., P. Savoie, et al. (1999). Effect of maceration at mowing on silage conservation, voluntary intake, digestibility and growth rate of steers fed precision chopped or round bale silages. Canadian Journal of Animal Science. June 79(2): 195-202. {a} Crops and Livestock Research Centre, Agriculture and Agri-Food Canada, Nappan, NS, B0L 1C0, Canada

Gunn, S., S. J. Bailey, et al. (1999). Partitioning of dry mass and leaf area within plants of three species grown at elevated CO2. Functional Ecology. June 13(Suppl. 1): 3-11. {a} School of Biological Sciences, University of Wales Bangor, Bangor, Gwynedd, LL57 2UW, UK

Davey, P. A., A. J. Parsons, et al. (1999). Does photosynthetic acclimation to elevated CO2 increase photosynthetic nitrogen-use efficiency? A study of three native UK grassland species in open-top chambers. Functional Ecology. June 13(Suppl. 1): 21-28. {a} Departments of Crop Sciences and Plant Biology, 190 Edward R. Madigan Laboratory, University of Illinois, 1201 West Gregory Drive, Urbana, IL, 61801, USA

Leeflang, L. (1999). Are stoloniferous plants able to avoid neighbours in response to low R: FR ratios in reflected light? Plant Ecology. April 141(1-2): 59-65. {a} Department of Plant Ecology and Evolutionary Biology, 3508 TB, Utrecht, Netherlands

Kumar, S. and R. S. Bhatt (1999). Feeding of white clover (Trifolium repens) hay in Angora rabbits. Indian Journal of Animal Nutrition. June 16(2): 167-170. {a} Regional Research Station, HPKV, Bajaura, Kullu, 175 125, India

Hoskin, S. O., T. N. Barry, et al. (1999). Effects of reducing anthelmintic input upon growth and faecal egg and larval counts in young farmed deer grazing chicory (Cichorium intybus) and perennial ryegrass (Lolium perenne)/white clover (Trifolium repens) pasture. Journal of Agricultural Science. May 132(3): 335-345. {a} Institute for Food, Nutrition and Human Health, Massey University, Palmerston North, New Zealand

Min, B. R., W. C. McNabb, et al. (1999). The effect of condensed tannins in Lotus corniculatus upon reproductive efficiency and wool production in sheep during late summer and autumn. Journal of Agricultural Science. May 132(3): 323-334. {a} Institute for Food, Nutrition and Human Health, Massey University, Palmerston North, New Zealand

Joyce, T. A., M. T. Abberton, et al. (1999). Relationships between genetic distance measured by RAPD-PCR and heterosis in inbred lines of white clover (Trifolium repens L.). Euphytica 107(3): 159-165. {a} Legume Breeding Group, Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EB, UK

Karsten, H. D. and G. W. Fick (1999). White clover growth patterns during the grazing season in a rotationally grazed dairy pasture in New York. Grass and Forage Science. June 54(2): 174-183. {a} Department of Agronomy, Pennsylvania State University, 116 ASI Building, University Park, PA, 16802, USA

Bungener, P., G. R. Balls, et al. (1999). Leaf injury characteristics of grassland species exposed to ozone in relation to soil moisture condition and vapour pressure deficit. New Phytologist. May 142(2): 271-282. {a} Swiss Federal Research Station for Agroecology and Agriculture (FAL), Institute of Environmental Protection and Agriculture (IUL) Liebefeld, CH-3003, Bern, Switzerland

Hutangura, P., U. Mathesius, et al. (1999). Auxin induction is a trigger for root gall formation caused by root-knot nematodes in white clover and is associated with the activation of the flavonoid pathway. Australian Journal of Plant Physiology 26(3): 221-231. {a} Plant Microbe Interactions Group, Research School of Biological Sciences, Australian National University, Canberra, ACT, 2601, Australia

Murray, P. J. and B. Willoughby (1998). Feeding preferences of Sitonia lepidus (clover root weevil) on Trifolium spp. In New Zealand. Tests of Agrochemicals and Cultivars(19): 58-59. {a} Institute of Grassland and Environmental Research, North Wyke, Okehampton, Devon, EX20 2SB, UK

Lewis, G. C. and B. Vaughan (1998). Comparison of pest damage to seedlings of two white clover cultivars at four sites. Tests of Agrochemicals and Cultivars(19): 42-43. {a} North Wyke Research Station, Institute of Grassland and Environmental Research, Okehampton, Devon, EX20 2SB, UK

Bungener, P., S. Nussbaum, et al. (1999). Growth response of grassland species to ozone in relation to soil moisture condition and plant strategy. New Phytologist. May 142(2): 283-293. {a} Swiss Federal Research Station for Agroecology and Agriculture (FAL), Institute of Environmental Protection and Agriculture (IUL) Liebefeld, CH-3003, Bern, Switzerland

Marilley, L., U. A. Hartwig, et al. (1999). Influence of an elevated atmospheric CO2 content on soil and rhizosphere bacterial communities beneath Lolium perenne and Trifolium repens under field conditions. Microbial Ecology. July 38(1): 39-49. {a} GSF-National Research Center, Institute of Soil Ecology, Ingolstaedter Landstrasse 1, D-85758, Oberschleissheim, Germany

Gangbazo, G., G. M. Barnett, et al. (1999). Disposing hog manure on inorganically-fertilized corn and forage fields in southeastern Quebec. Canadian Agricultural Engineering. Jan. March 41(1): 1-12. {a} Direction des ecosystemes aquatiques, Ministere de l'Environnement et de la Faune, Edifice Marie Guyart, 7e etage, 675, Rene-Levesque Est, B-22, Quebec, PQ, G1R 5V7, Canada

Abberton, M. T., J. H. MacDuff, et al. (1999). Nitrogen fixation by hybrids of white clover (Trifolium repens L.) and Trifolium nigrescens. Journal of Agronomy and Crop Science. July 183(1): 27-33. {a} Institute of Grassland and Environmental Research, Plas Gogerddan, Ceredigion, Aberystwyth, SY23 3EB, UK

Carlier, L. and M. Machiels (1998). Forage legumes: Possibilities for improvement of production. Proceedings of the Latvian Academy of Sciences Section B Natural Exact and Applied Sciences 52(6): 300-304. {a} Department Crop Husbandry and Ecophysiology (CLO-Gent), Plant Breeding Institute, Burgemeester van Gansberghelaan 109, B-9820, Merelbeke, Belgium

Tesfaye, M. and F. B. Holl (1998). Rhizobium strains that nodulate Trifolium semipilosum Fres. are phylogenetically distinct. Plant and Soil 207(2): 147-154. {a} Faculty of Agricultural Sciences, The University of British Columbia, Vancouver, B.C., V6T 1Z4, Canada

Scheu, S., A. Theenhaus, et al. (1999). Links between the detritivore and the herbivore system: Effects of earthworms and Collembola on plant growth and aphid development. Oecologia Berlin. June 119(4): 541-551. {a} Institute of Zoology, Darmstadt University of Technology, Schnittspahnstrasse 3, D-64287, Darmstadt, Germany

Sawada, H. (1999). Genetic variation in clonal traits of Trifolium repens and species interactions. Plant Species Biology. April 14(1): 19-28. {a} Faculty of Agriculture, Shizuoka University, Ooya 836, Shizuoka, 422-8529, Japan

Edwards, G. R. and M. J. Crawley (1999). Effects of disturbance and rabbit grazing on seedling recruitment of six mesic grassland species. Seed Science Research. June 9(2): 145-156. {a} AgResearch Grasslands, Tennent Drive, Palmerston North, New Zealand

Stocklin, J. and C. Korner (1999). Interactive effects of elevated CO2, P availability and legume presence on calcareous grassland: Results of a glasshouse experiment. Functional Ecology. April 13(2): 200-209. {a} Institute of Botany, University of Basel, Schonbeinstr. 6, CH-4056, Basel, Switzerland

Staddon, P. L., J. D. Graves, et al. (1999). Effect of enhanced atmospheric CO2 on mycorrhizal colonization and phosphorus inflow in 10 herbaceous species of contrasting growth strategies. Functional Ecology. April 13(2): 190-199. {a} Department of Biology, University of York, York, YO1 5YW, UK

Daners, G. and M. C. Telleria (1998). Native vs. introduced bee flora: A palynological survey of honeys from Uruguay. Journal of Apicultural Research 37(4): 221-229. {a} Palynology Department, Faculty of Sciences, Igua 4225, 11400, Montevideo, Uruguay

Schittko, U., F. Burghardt, et al. (1999). Sequestration and distribution of flavonoids in the common blue butterfly Polyommatus icarus reared on Trifolium repens. Phytochemistry Oxford. July 51(5): 609-614. {a} Pharmazeutische Biologie, Julius-von-Sachs-Institut fuer Biowissenschaften, Julius-von-Sachs-Platz 2, 97082, Wuerzburg, Germany

Saucy, F., J. Studer, et al. (1999). Preference for acyanogenic white clover (Trifolium repens) in the vole Arvicola terrestris: I. Experiments with two varieties. Journal of Chemical Ecology. June 25(6): 1441-1454. {a} Department of Biology, Ecology and Biology of Organisms, University of Fribourg, Perolles, CH-1700, Fribourg, Switzerland

McKenzie, F. R., J. L. Jacobs, et al. (1998). Influence of single applications of nitrogen on white clover nitrogen fixation in autumn and winter dairy pastures in south-west Victoria, Australia. African Journal of Range and Forage Science. Aug. 15(1-2): 1-6. {a} Department of Natural Resources and Environment, 78 Henna Street, Warrnambool, VIC, 3280, Australia

Boehme, F., P. K. Welsch, et al. (1999). Uptake of airborne semivolatile organic compounds in agricultural plants: Field measurements of interspecies variability. Environmental Science and Technology. June 33(11): 1805-1813. {a} Baltic Sea Research Institute, Seestrasse 15, 18119, Rostock, Germany

Eason, W. R., J. Scullion, et al. (1999). Soil parameters and plant responses associated with arbuscular mycorrhizas from contrasting grassland management regimes. Agriculture Ecosystems and Environment. May 73(3): 245-255. {a} Institute for Grassland and Environmental Research, Plas Goggerdan, Aberystwyth, SY23 3EB, UK

Davidson, M. M., T. Cilgi, et al. (1997). Resilience of springtail (Collembola) populations in farmland following exposure to insecticides. Australasian Journal of Ecotoxicology. July 3(2): 99-108. {a} Division of Soil, Plant and Ecological Sciences, Lincoln University, Canterbury, New Zealand

Hunter, D. A., S. D. Yoo, et al. (1999). Expression of 1-aminocyclopropane-1-carboxylate oxidase during leaf ontogeny in white clover. Plant Physiology Rockville. May 120(1): 131-141. {a} Institute of Molecular BioSciences, Massey University, Palmerston North, New Zealand

Wales, W. J., P. T. Doyle, et al. (1999). Effects of variations in herbage mass, allowance, and level of supplement on nutrient intake and milk production of dairy cows in spring and summer. Australian Journal of Experimental Agriculture 39(2): 119-130. {a} Department of Natural Resources and Environment, Kyabram Dairy Centre, Institute of Sustainable Irrigated Agriculture, 120 Cooma Road, Kyabram, Vic., 3620, Australia

Todorovic, C., C. Nguyen, et al. (1999). 14C-assimilate partitioning within white clover plant-soil system: Effects of photoperiod/temperature treatments and defoliation. European Journal of Agronomy. June 11(1): 13-21. {a} Unite associee INRA Agronomie et Environment, ENSAIA, Vandoeuvre-les-Nancy, F-54505, France

Kunelius, H. T. and K. B. McRae (1999). Forage chicory persists in combination with cool season grasses and legumes. Canadian Journal of Plant Science. April 79(2): 197-200. {a} Crop and Livestock Research Centre, Agriculture and Agri-Food Canada, Charlottetown, PE, C1A 7M8, Canada

Marshall, A. H., A. A. Cowan, et al. (1999). A comparison of ovule abortion in self-incompatible and self-fertile lines of white clover (Trifolium repens L.). Annals of Applied Biology. Feb. 134(1): 121-124. {a} Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EB, UK

Sutherland, B. L., D. E. Hume, et al. (1999). Allelopathic effects of endophyte-infected perennial ryegrass extracts on white clover seedlings. New Zealand Journal of Agricultural Research. March 42(1): 19-26. {a} Grasslands Research Centre, AgResearch, Palmerston North, New Zealand

Manderscheid, R., J. Bender, et al. (1999). Long term effects of various atmospheric carbon dioxide concentrations on physiology, growth, yield, and quality of crop plants. Berichte ueber Landwirtschaft. March 77(1): 117-120. {a} Braunschweig, Germany

Ogura, S. i., K. Abe, et al. (1999). The effect of foaming in the rumen with white clover ingestion on the microbial fermentation of sheep. Grassland Science. Jan. 44(4): 310-314. {a} Grassland and Animal Production Division, Faculty of Agriculture, Miyazaki University, Miyazaki, 889-2192, Japan

Hoskin, S. O., T. N. Barry, et al. (1999). Growth and carcass production of young farmed deer grazing sulla (Hedysarum coronarium), chicory (Cichorium intybus), or perennial ryegrass (Lolium perenne)/white clover (Trifolium repens) pasture in New Zealand. New Zealand Journal of Agricultural Research. March 42(1): 83-92. {a} Institute of Food Nutrition and Human Health, Massey University, Palmerston North, New Zealand

Lewis, D. N., A. H. Marshall, et al. (1998). Influence of storage conditions on seed germination and vigour of temperate forage species. Seed Science and Technology 26(3): 643-656. {a} Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EB, UK

Wachendorf, M., B. Ingwersen, et al. (1999). Prediction of the clover content of red clover- and white clover-grass mixtures by near-infrared reflectance spectroscopy. Grass and Forage Science. March 54(1): 87-90. {a} Department of Grass and Forage Science, Institute of Crop Science and Plant Breeding, Christian-Albrechts-University Kiel, Holzkoppelweg 2, 24118, Kiel, Germany

Bailey, J. S. and A. S. Laidlaw (1999). The interactive effects of phosphorus, potassium, lime and molybdenum on the growth and morphology of white clover (Trifolium repens L.) at establishment. Grass and Forage Science. March 54(1): 69-76. {a} Department of Agriculture for Northern Ireland, Agricultural and Environmental Science Division, Newforge Lane, Belfast, BT9 5PX, UK

Bowman, A. M., G. P. M. Wilson, et al. (1998). Evaluation of perennial peanuts (Arachis spp.) as forage on the New South Wales north coast. Tropical Grasslands. Dec. 32(4): 252-258. {a} NSW Agriculture, Trangie, NSW, 2823, Australia

Campbell, B. D., J. R. Caradus, et al. (1999). Temperature responses and nuclear DNA amounts of seven white clover populations which differ in early spring growth rates. New Zealand Journal of Agricultural Research. March 42(1): 9-17. {a} Grasslands Research Centre, AgResearch, Palmerston North, New Zealand

Hunter, D. A. and M. T. McManus (1999). Comparison of acid phosphatases in two genotypes of white clover with different responses to applied phosphate. Journal of Plant Nutrition. April May 22(4-5): 679-692. {a} Institute of Molecular Biosciences, Massey University, Palmerston North, New Zealand

Mika, A., D. Krzewinska, et al. (1998). Effects of mulches, herbicides and cultivation as orchard groundcover management systems in young apple orchard. Journal of Fruit and Ornamental Plant Research 6(1): 1-13. {a} Research Institute of Pomology and Floriculture, Skierniewice, Poland

Nassiri, M. and A. Elgersma (1998). Competition in perennial ryegrass-white clover mixtures under cutting. 2. Leaf characteristics, light interception and dry-matter production during regrowth. Grass and Forage Science. Dec. 53(4): 367-379. {a} Department of Agronomy, Graduate School of Production Ecology, Wageningen Agricultural University, Haarweg 333, 6709 RZ, Wageningen, Netherlands

Elgersma, A., M. Nassiri, et al. (1998). Competition in perennial ryegrass-white clover mixtures under cutting. 1. Dry-matter yield, species composition and nitrogen fixation. Grass and Forage Science. Dec. 53(4): 353-366. {a} Department of Agronomy, Graduate School of Production Ecology, Wageningen Agricultural University, Haarweg 333, 6709 RZ, Wageningen, Netherlands

Hoglind, M. and L. B. Frankow (1998). Growing point dynamics and spring growth of white clover in a mixed sward and the effects of nitrogen application. Grass and Forage Science. Dec. 53(4): 338-345. {a} Norwegian Crop Research Institute, Saerheim Research Centre, N-4062, Klepp, Norway

Ryan, M. and J. Ash (1999). Effects of phosphorus and nitrogen on growth of pasture plants and VAM fungi in SE Australian soils with contrasting fertiliser histories (conventional and biodynamic). Agriculture Ecosystems and Environment 73(1): 51-62. {a} CSIRO Plant Industry, Canberra, ACT, 2601, Australia

Zauralov, O. A. (1998). Sugars of nectar of some honey-containing plants cultivated in botanical garden of Mordovian university. Rastitel'nye Resursy 34(4): 72-75.

Ogren, E., B. Bath, et al. (1998). First and second year nitrogen effects of autumn and spring-incorporated green-manure crops in field vegetable production. Swedish Journal of Agricultural Research 28(3): 137-146. {a} Provincial Administration of Vastmanland, Vastmanland, Sweden

Silva, R. G., K. C. Cameron, et al. (1999). A lysimeter study of the impact of cow urine, dairy shed effluent, and nitrogen fertiliser on nitrate leaching. Australian Journal of Soil Research 37(2): 357-369. {a} Soil and Physical Sciences Group, Soil, Plant and Ecological Sciences Division, Lincoln University, Canterbury, New Zealand

Gustine, D. L. and D. R. Huff (1999). Genetic variation within and among white clover populations from managed permanent pastures of the Northeastern USA. Crop Science 39(2): 524-530. {a} Pasture Systems and Watershed Management Research Laboratory, USDA-ARS, Curtin Road, University Park, PA, 16802-3702, USA

Marriott, C. A., G. T. Barthram, et al. (1999). Seasonal dynamics of leaf extension and losses to senescence and herbivory in extensively managed sown ryegrass-white clover swards. Journal of Agricultural Science 132(1): 77-89. {a} Macaulay Land Use Research Institute, Craigiebuckler, Aberdeen, AB15 8QH, UK

Devesa, J. A., T. Ruiz, et al. (1998). Seed germination in wild clovers (Trifolium, Leguminosae) from Southwestern Europe (Spain). Plant Biosystems 132(3): 225-232. {a} Departamento de Biologia y Produccion de los Vegetales, Unidad de Botanica, Faculdad de Ciencias, Univesidad de Extremadura, 06071, Badajoz, Spain

Ansari, H. A., N. W. Ellison, et al. (1999). Molecular cytogenetic organization of 5S and 18S-26S rDNA loci in white clover (Trifolium repens L.) and related species. Annals of Botany London 83(3): 199-206. {a} AgResearch, Grasslands Research Centre, Palmerston North, New Zealand

Wilman, D., S. A. Byrne, et al. (1999). Persistence of sown species and ingress of unsown species in agriculturally improved hill swards. Journal of Agricultural Science 132(2): 155-161. {a} Welsh Institute of Rural Studies, University of Wales, Aberystwyth, Ceredigion, SY23 3AL, UK

Hunter, D. A., L. M. Watson, et al. (1999). Cell wall proteins in white clover: Influence of plant phosphate status. Plant Physiology and Biochemistry Paris 37(1): 25-32. {a} Institute of Molecular BioSciences, Massey University, Palmerston North, New Zealand

Scullion, J., W. R. Eason, et al. (1998). The effectivity of arbuscular mycorrhizal fungi from high input conventional and organic grassland and grass-arable rotations. Plant and Soil 204(2): 243-254. {a} Institute of Biological Sciences, University of Wales, Aberystwyth, SY23 3DE, UK

Aerts, R. J., W. C. McNabb, et al. (1999). Condensed tannins from Lotus corniculatus and Lotus pedunculatus exert differnt effects on the in vitro rumen degradation of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) protein. Journal of the Science of Food and Agriculture 79(1): 79-85. {a} Nutr. Group, AgRes., Grasslands Res. Cent., Private Bag 11008, Palmerston North, New Zealand

Leadley, P. W., P. A. Niklaus, et al. (1999). A field study of the effects of elevated CO2 on plant biomass and community structure in a calcareous grassland. Oecologia Berlin 118(1): 39-49. {a} Univ. Paris-Sud XI, Batiment 362, Ecol. Population Communautes, F-91405 Orsay Cedex, France

Delavault, P., E. Estabrook, et al. (1998). Host-root exudates increase gene expression of asparagine synthetase in the roots of a hemiparasitic plant Triphysaria versicolor (Scrophulariaceae). Gene Amsterdam 222(2): 155-162. {a} Dep. Vegetable Crops, Univ. California-Davis, Davis, CA 95616-9659, USA

Scholefield, D., R. D. Sheldrick, et al. (1999). A comparison of triple superphosphate and Gafsa ground rock phosphate fertilisers as P-sources for grass-clover swards on a poorly-drained acid clay soil. Nutrient Cycling in Agroecosystems 53(2): 147-155. Institute Grassland, Environmental Research, North Wyke Research Station, Okehampton, Devon, EX20 2SB, UK

Riffkin, P. A., P. E. Quigley, et al. (1999). Annual nitrogen fixation in grazed dairy pastures in south-western Victoria. Australian Journal of Agricultural Research 50(2): 273-281. {a} Pastoral Vet. Inst., Private Bag 105, Hamilton, VIC 3300, Australia

Riffkin, P. A., P. E. Quigley, et al. (1999). Factors associated with biological nitrogen fixation in dairy pastures in south-western Victoria. Australian Journal of Agricultural Research 50(2): 261-272. {a} Pastoral Vet. Inst., Private Bag 105, Hamilton, VIC 3300, Australia

Brandsaeter, L. O., J. Netland, et al. (1998). Yields, weeds, pests and soil nitrogen in a white cabbage-living mulch system. Biological Agriculture and Horticulture 16(3): 291-309. {a} Department Herbology, Plant Protect Centre, Norwegian Crop Research Institute, N-1432 As, Norway

Clark, H., P. C. D. Newton, et al. (1999). Physiological and morphological responses to elevated CO2 and a soil moisture deficit of temperate pasture species growing in an established plant community. Journal of Experimental Botany 50(331): 233-242. {a} AgRes. Grasslands, Private Bag 11008, Palmerston North, New Zealand

Laidlaw, A. S. and J. A. Withers (1998). Changes in contribution of white clover to canopy structure in perennial ryegrass/white clover swards in response to N fertilizer. Grass and Forage Science 53(3): 287-291. {a} Applied Plant Science Division, Department of Agriculture for Northern Ireland, Plant Testing Station, 50 Houston Road, Crossnacreevy, Belfast, BT6 9SH, UK

Ayres, J. F., K. S. Nandra, et al. (1998). A study of the nutritive value of white clover (Trifolium repens L.) in relation to different stages of phenological maturity in the primary growth phase in spring. Grass and Forage Science 53(3): 250-259. {a} Agricultural Research and Advisory Station, NSW Agriculture, Glen Innes, New South Wales, 2370, Australia

Singh, D. K. and P. W. G. Sale (1998). Phosphorus supply and the growth of frequently defoliated white clover (Trifolium repens L.) in dry soil. Plant and Soil 205(2): 155-162. Dep. Agric. Sci., La Trobe Univ., Bundoora, VIC 3083, Australia

Liu, X., K. Takayama, et al. (1998). Cultivation condition and nutritive value of Azolla as a feed resource. Grassland Science 44(3): 266-271. Fac. Agric., Kagoshima Univ., 1-21-24 Korimoto, Kagoshima, Kagoshima 890-0065, Japan

Ye, Z. H., J. W. C. Wong, et al. (1999). Lime and pig manure as ameliorants or revegetating lead/zinc mine tailings: A greenhouse study. Bioresource Technology 69(1): 35-43. {a} Inst. Natural Resources Waste Management, Hong Kong Baptist Univ., Kowloon Tong, Hong Kong

Tang, Y., B. I. Chevone, et al. (1999). Ozone-responsive proteins in a tolerant and sensitive clone of white clover (Trifolium repens). Environmental Pollution 104(1): 89-98. {a} Dep. Plant Pathol., Physiol. Weed Sci., Virginia Polytechnic Inst. State Univ., Blacksburg, VA 24050, USA

Voigt, P. W., H. W. Godwin, et al. (1998). Effect of four acid soils on root growth of white clover seedlings using a soil-on-agar procedure. Plant and Soil 205(1): 51-56. USDA-ARS, Appalachian Soil Water Conservation Res. Lab., 1224 Airport Road, Beaver, WV 25813-9423, USA

Dunsford, S. J., A. J. Free, et al. (1998). Acidifying peat as an aid to the reconstruction of lowland heath on arable soil: A field experiment. Journal of Applied Ecology 35(5): 660-672. {a} Sch. Biological Sci., Univ. East Anglia, Norwich NR4 7TJ, UK

Davy, A. J., S. J. Dunsford, et al. (1998). Acidifying peat as an aid to the reconstruction of lowland health on arable soil: Lysimeter experiments. Journal of Applied Ecology 35(5): 649-659. {a} Sch. Biological Sci., Univ. East Anglia, Norwich NR4 7TJ, UK

Zygoyiannis, D., N. Katsaounis, et al. (1999). The use of nutritional management after weaning for the production of heavier lamb carcasses from Greek dairy breeds. Livestock Production Science 57(3): 279-289. {a} Animal Biol. Div., Scott. Agric. College, Bush Estate, Penicuik EH26 0QE, UK

Thompson, D. B. (1999). Genotype-environment interaction and the ontogeny of diet-induced phenotypic plasticity in size and shape of Melanoplus femurrubrum (Orthoptera: Acrididae). Journal of Evolutionary Biology 12(1): 38-48. {a} Dep. Biol. Sci., Univ. Nevada, Las Vegas, 4504 Maryland Parkway, Las Vegas, NV 89154-4004, USA

Di, H. J., K. C. Cameron, et al. (1998). Nitrate leaching and pasture yields following the application of dairy shed effluent or ammonium fertilizer under spray or flood irrigation: Results of a lysimeter study. Soil Use and Management 14(4): 209-214. Soil Phys. Sci. Group, Soil Plant Ecol. Sci. Div., PO Box 84, Lincoln Univ., Canterbury, New Zealand

Sircelj, H., F. Batic, et al. (1997). Effects of ozone on pigment and ascorbic acid content in white clover (Trifolium repens L. cv. "Menna") leaves. Acta Biologica Slovenica 41(4): 43-50. {a} Agron. Dep., Biotech. Fac., Univ. Ljubljana, Jamnikarjeva 101, 1111 Ljubljana, Slovenia

Milne, W. M. (1998). Comparative performance of two biotypes of Therioaphis trifolii (Monell) (Hemiptera: Aphididae) on clovers (Trifolium) and medics (Medicago). Australian Journal of Entomology 37(4): 350-355. {a} CSIRO Entomology, GPO Box 1700, Canberra, ACT 2601, Australia

Cho, N. K., Y. K. Kang, et al. (1998). Distribution, standing crop, and nutritive value of native legumes in Cheju Island. Korean Journal of Animal Science 40(6): 681-690. {a} Dep. Agron., Cheju Natl. Univ., Cheju 690-756, South Korea

Murray, P. J. and R. O. Clements (1998). Transfer of nitrogen between clover and wheat: Effect of root herbivory. European Journal of Soil Biology 34(1): 25-30. {a} Inst. Grassl. Environ. Res., North Wyke Res. Stn., Okehampton, Devon EX20 2SB, UK

Calvitti, M. and P. C. Remotti (1998). Host preference and performance of Bemisia argentifolii (Homoptera: Aleyrodidae) on weeds in central Italy. Environmental Entomology 27(6): 1350-1356. Innovation Dep., Div. Agric., ENEA-CRE Casaccia, Via Anguillarese 301, 00060 S. M. di Galeria, Rome, Italy

Teklehaimanot, Z. and R. Martin (1999). Diurnal and seasonal patterns of nitrogenase activity of red alder in comparison with white clover in silvopastoral agroforestry systems. Biology and Fertility of Soils 28(3): 267-270. {a} Sch. Agric. Forest Sci., Univ. Wales Bangor, Gwynedd LL57 2UW, UK

Lewis, G. C. and B. Vaughan (1998). Comparison of pest damage to seedlings of two white clover cultivars at four sites. Annals of Applied Biology 132(Suppl.): 42-43. Inst. Grassland Environ. Res., North Wyke Res. Stn., Okehampton, Devon EX20 2SB, UK

Niezen, J. H., H. A. Robertson, et al. (1998). Production, faecal egg counts and worm burdens of ewe lambs which grazed six contrasting forages. Veterinary Parasitology 80(1): 15-27. {a} AgRes., Grassland, Private Bag 11008, Palmerston North, New Zealand

Lotocka, B., J. Kopcinska, et al. (1998). Morphogenesis of root nodules in white clover. II. The effect of mutation in genes nod IJ of the microsymbiont upon the nodule structure. Acta Societatis Botanicorum Poloniae 67(1): 5-22. Dep. Bot., Fac. Agric., Warsaw Agric. Univ., Rakowiecka 26/30, 02-528 Warsaw, Poland

Lotocka, B. and W. Golinowski (1998). Morphogenesis of root nodules in white clover. III. The effect of mutation in nod IJ genes of the microsymbiont upon the DNA level in the host tissue. Acta Societatis Botanicorum Poloniae 67(1): 23-29. Dep. Bot., Fac. Agric., Warsaw Agric. Univ., Rakowiecka 26/30, 02-528 Warszawa, Poland

Hornick, J. L., P. Raskin, et al. (1998). Compensatory growth in Belgian Blue bulls previously grazed at two stocking rates: Animal performance and meat characteristics. Animal Science Pencaitland 67(3): 427-434. {a} Dep. Anim. Nutr., B43, Fac. Vet. Med., Univ. Liege, Sart-Tilman, 400 Leige, Belgium

Thom, E. R., C. D. Waugh, et al. (1998). Growth and persistence of perennial and hybrid ryegrasses when grazed by dairy cows in the central Waikato region of New Zealand. New Zealand Journal of Agricultural Research 41(4): 477-486. Dairying Res. Corp., Private Bag 3123, Hamilton, New Zealand

Denton, C. S., R. D. Bardgett, et al. (1999). Low amounts of root herbivory positively influence the rhizosphere microbial community in a temperate grassland soil. Soil Biology and Biochemistry 31(1): 155-165. {a} Sch. Biol. Sci., 3.614 Stopford Building, Univ. Manchester, Manchester M13 9PT, UK

Chevone, B., W. Manning, et al. (1998). Relating ambient ozone concentrations to adverse biomass responses of white clover: A case study. Environmental Pollution 103(1): 103-108. {a} Dep. Plant Pathol. Physiol. Weed Sci., Virginia Polytechnic Inst. State Univ., Blacksburg, VA 24061-0331, USA

Ball, G. R., J. Benton, et al. (1998). Identifying factors which modify the effects of ambient ozone on white clover (Trifolium repens) in Europe. Environmental Pollution 103(1): 7-16. {a} Dep. Computing, Nottingham Trent Univ., Burton St., Nottingham NG1 4BU, UK

Lotocka, B., J. Kopcinska, et al. (1997). Morphogenesis of root nodules in white clover. I. Effective root nodules induced by the wild type Rhizobium leguminosarum biovar. trifolii. Acta Societatis Botanicorum Poloniae 66(3-4): 273-292. {a} Dep. Botany, Fac. Agric., Warsaw Agric. Univ., Rakowiecka 26/30, 02-528 Warsaw, Poland

Abberton, M. T., Y. T. P. T. Michaelson, et al. (1998). Morphological characteristics of hybrids between white clover, Trifolium repens L., and Caucasian clover, Trifolium ambiguum M. Bieb. Plant Breeding 117(5): 494-496. {a} Inst. Grassland Environ. Res., Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK

Sharma, S. B., K. R. Hancock, et al. (1998). Expression of a sulfur-rich maize seed storage protein, delta-zein, in white clover (Trifolium repens) to improve forage quality. Molecular Breeding 4(5): 435-448. {a} Plant Molecular Genetics Lab., Grassland Div., AgRes., Tennent Drive, Private Bag 11008, Palmerston North, New Zealand

Anderson, G. C., G. J. Blair, et al. (1998). Soil-extractable sulfur and pasture response to applied sulfur: 2. Seasonal variation in soil sulfur tests and sulfur response by pastures under field conditions. Australian Journal of Experimental Agriculture 38(6): 575-582. {a} CSIRO Plant Ind., Private Bag PO, Wembley, WA 6014, Australia

Anderson, G. C., G. J. Blair, et al. (1998). Soil-extractable sulfur and pasture response to applied sulfur: 1. Studies under glasshouse conditions. Australian Journal of Experimental Agriculture 38(6): 567-574. {a} CSIRO Plant Ind., Private Bag PO, Wembley, WA 6014, Australia

Nauggaard, N. H., N. A. De, et al. (1998). A field study of nitrogen dynamics and spring barley growth as affected by the quality of incorporated residues from white clover and ryegrass. Plant and Soil 203(1): 91-101. {a} Plant Biol. Biochem. Dep., RISO Natl. Lab., P.O. Box 49, DK-4000 Roskilde, Denmark

Wright, D. P., D. J. Read, et al. (1998). Mycorrhizal sink strength influences whole plant carbon balance of Trifolium repens L. Plant Cell and Environment 21(9): 881-891. {a} Dep. Anim. Plant Sci., Univ. Sheffield, Sheffield S10 2TN, UK

Bouchart, V., J. H. MacDuff, et al. (1998). Seasonal pattern of accumulation and effects of low temperatures on storage compounds in Trifolium repens. Physiologia Plantarum 104(1): 65-74. {a} U.A. INRA Physiol. Biochim. Veg., Inst. Rech. Biol. Appliquee, Univ. Caen, F-14032 Caen Cedex, France

Sharma, A., R. Ram, et al. (1998). Rubus ellipticus, a perennial weed host of prunus necrotic ring spot virus in India. Plant Disease 82(11): 1283. Plant Virus Laboratory, Floriculture Division, Institute of Himalayan Bioresource Technology, Palampur-176061, H.P., India

Dale, H. and M. C. Press (1998). Elevated atmospheric CO2 influences the interaction between the parasitic angiosperm Orobanche minor and its host Trifolium repens. New Phytologist 140(1): 65-73. {a} Dep. Anim. Plant Sciences, Univ. Sheffield, Sheffield S10 2TN, UK

Lemieux, C. and C. Delisle (1998). Using cover crops to establish white and black spruce on abandoned agricultural lands. Phytoprotection 79(1): 21-33. {a} Agric. Agri-Food Canada, Soils Crops Res. Dev. Center, 2560 Hochelaga Blvd., Sainte-Foy, PQ G1V 2J3, Canada

Phillips, C. J. C. and N. L. James (1998). The effect of including white clover in perennial ryegrass swards and the height of mixed swards on the milk production, sward selection and ingestive behaviour of dairy cows. Animal Science Pencaitland 67(2): 195-202. {a} Dep. Clinical Vet. Med., Univ. Cambridge, Cambridge CB3 0ES, UK

Karlsson, S. E. M., I. Rydberg, et al. (1998). Strategy for catch crop development. II. Screening of species undersown in spring barley (Hordeum vulgare L.) with respect to catch crop growth and grain yield. Acta Agriculturae Scandinavica Section B Soil and Plant Science 48(1): 26-33. {a} Dep. Plant Biol., Upps. Genet. Cent., SLU, P.O. Box 7080, SE-750 07 Uppsala, Sweden

Isobe, K. and Y. Tsuboki (1998). The relationship between growth promotion by arbuscular mycorrhizal fungi and root morphology and phosphorus absorption in gramineous and leguminous crops. Japanese Journal of Crop Science 67(3): 347-352. {a} Coll. Bioresour. Sci., Nihon Univ., Fujisawa 252-0813, Japan

Marshall, A. H., S. K. Koldbrook, et al. (1998). Growth and reproductive characteristics in backcross hybrids derived from Trifolium repens L. X T. nigrescens Viv. interspecific crosses. Euphytica 104(1): 61-66. Legume Breeding Group, IGER, Plas Gogerddan, Aberystwyth SY23 3EB, UK

Brauer, D. (1998). Assessing the relative effects of hydrogen aluminum ions on primary root growth of white clover seedlings. Journal of Plant Nutrition 21(11): 2429-2439. {a} USDA/ARS/NAA, Appalachian Soil Water Conservation Res. Lab., P.O. Box 400, Beaver, WV 25813, USA

Heraut, B. V., C. Robin, et al. (1998). Effects of R:FR ratio on developing leaves in white clover. Net CO2 assimilation, photochemical activity and leaf morphology. Comptes Rendus de l'Academie des Sciences Serie III Sciences de la Vie 321(8): 679-687. {a} Unite Associee Inra-Ensaia, BP 172, 54505 Vandoeuvre-les-Nancy Cedex, France

Tchebotsar, V. K., U. G. Kang, et al. (1998). The use of GUS-reporter gene to study the effect of Azospirillum-Rhizobium coinoculation on nodulation of white clover. Biology and Fertility of Soils 27(4): 349-352. {a} National Inst. Agrobiological Resources, Tsukuba, Ibaraki 305, Japan

Liu, F. Y., J. Hodgson, et al. (1998). Effects of grazing sequence and condensed tannins on ingestive behaviour, herbage intake, and performance of lambs grazing Yorkshire fog pasture. New Zealand Journal of Agricultural Research 41(3): 359-366. {a} Dep. Plant Sci., Massey Univ., Private Bag 11 222, Palmerston North, New Zealand

Bourdot, G. W., G. A. Hurrell, et al. (1998). Weed flora of cereal crops in Canterbury, New Zealand. New Zealand Journal of Crop and Horticultural Science 26(3): 233-247. New Zealand Pastoral Agric. Res. Inst. Ltd., P. O. Box 60, Lincoln, New Zealand

Refi, R. O. and C. J. Escuder (1998). Nitrogen fixation by Trifolium repens and Lotus tenuis-based pastures in the Flooding Pampa, Argentina. Agronomie Paris 18(4): 285-297. {a} Fac. Ciencias Agrar., Univ. Nac. Rosario, Rosario, Argentina

Morton, J. D., A. G. Sinclair, et al. (1998). Pasture yield responses to sulphur fertilisers in relation to nutrient ratios in white clover. New Zealand Journal of Agricultural Research 41(3): 313-323. {a} AgRes., Invermay Agric. Cent., Private Bag 50034, Mosgiel, New Zealand

Bluett, S. J., C. Matthew, et al. (1998). The relationship between herbage mass and pasture accumulation rate in winter. New Zealand Journal of Agricultural Research 41(3): 299-305. {a} Dep. Plant Sci., Massey Univ., Private Bag 11-222, Palmerston, New Zealand

Trytsman, M., A. J. Kruger, et al. (1997). Production of irrigated Trifolium repens L. under a cutting regime in the subtropical region of Gauteng, South Africa. African Journal of Range and Forage Science 14(3): 81-86. {a} ARC-Range Forage Inst., Private Bag X05, Lynn East 0039, South Africa

Abberton, M. T., Y. T. P. T. Michaelson, et al. (1998). Characterization of novel inbred lines of white clover (Trifolium repens L.): I. Dynamics of plant growth and nodule development in flowing solution culture. Euphytica 103(1): 35-43. {a} Inst. Grassland Environ. Res., Aberystwyth, Ceredigion SY23 3EB, UK

Harrington, K. C. and A. Rahman (1998). Tolerance to herbicides of ground cover species for New Zealand orchards. Plant Protection Quarterly 13(3): 111-115. {a} Dep. Plant Sci., Massey Univ., Palmerston North, New Zealand

Michaelson, H. T. P. T., J. H. Macduff, et al. (1998). Characterization of a novel inbred lines of white clover (Trifolium repens L.). II. Variation in N2 fixation, NO3- uptake and their interactions. Euphytica 103(1): 45-54. {a} Inst. Grassland Environ. Res., Aberystwyth, Dyfed SE23 3EB, UK

Cuttle, S. P., R. V. Scurlock, et al. (1998). A 6-year comparison of nitrate leaching from grass/clover and N-fertilized grass pastures grazed by sheep. Journal of Agricultural Science 131(1): 39-50. {a} Inst. Grassland Environ. Res., Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK

Hameleers, A. and R. W. Mayes (1998). The use of n-alkanes to estimate herbage intake and diet composition by dairy cows offered a perennial ryegrass/white clover mixture. Grass and Forage Science 53(2): 164-169. {a} SAC, Food and Farm. Syst. Dep., Crichton Royal Farm, Mid Park, Bankend Road, Dumfries DG1 4SZ, UK

Wilman, D. and M. P. Rezvani (1998). Volume, surface area and cellular composition of chewed particles of plant parts of eight forage species and estimated degradation of cell wall. Journal of Agricultural Science 131(1): 69-77. {a} Welsh Inst. Rural Studies, Univ. Wales, Aberystwyth, Ceredigion SY23 3AL, UK

Williams, T. A., M. T. Abberton, et al. (1998). Evaluation of seed production potential in white clover (Trifolium repens L.) varietal improvement programmes. Grass and Forage Science 53(2): 197-207. {a} Legume Breeding Group, IGER, Plas Gogerddan, Aberystwyth SY23 3EB, UK

Rezvani, M. P. and D. Wilman (1998). Cell wall thickness and cell dimensions in plant parts of eight forage species. Journal of Agricultural Science 131(1): 59-67. {a} Welsh Inst. Rural Studies, Univ. Wales, Aberystwyth, Ceredigion SY23 3AL, UK

Wilman, D. and M. P. Rezvani (1998). In vitro digestibility and neutral detergent fibre and lignin contents of plant parts of nine forage species. Journal of Agricultural Science 131(1): 51-58. {a} Welsh Inst. Rural Studies, Univ. Wales, Aberystwyth, Ceredigion SY23 3AL, UK

Vidor, M. A. and A. V. Jacques (1998). Performance of a natural pasture sod-seeded with cold-season legumes and evaluated under cutting and grazing conditions: 1. Availability of dry matter, digestible organic matter and crude protein. Revista Brasileira de Zootecnia 27(2): 267-271. {a} Parte de Dissertacao de Mestrado apresentada pelo primeiro autor a Universidade Federal Rio Grande Do Sul, 59600 Mossore, RN, Brazil

Canto, M. W. D., E. L. Moojen, et al. (1998). Production of forage in a Italian ryegrass pasture (Lolium multiflorum Lam) + white clover (Trifolium repens L.) submitted to different levels of dry matter residues. Revista Brasileira de Zootecnia 27(2): 231-237. {a} Universidade Estadual de Maringa 87020-900, Maringa, PR, Brazil

Brink, G. E., T. E. Fairbrother, et al. (1998). Seasonal variation in morphology of continuously stocked white clover. Crop Science 38(5): 1224-1228. {a} USDA-ARS, Forage Res. Unit, P.O. Box 5367, Mississipi State, MS 39762, USA

Milukaite, A. (1998). Flux of benzo(a)pyrene to the ground surface and its distribution in the ecosystem. Water Air and Soil Pollution 105(1-2): 471-480. {a} Inst. Physics, A. Gostauto 12, 2600 Vilnius, Lithuania

Selvarajan, R. and M. D. Gupta (1996). Characterization of a virus causing mosaic on gladiolus. International Journal of Tropical Plant Diseases 14(2): 217-222. {a} Natl. Res. Cnet. on Banana, No. 44, Ramalinganagar, South Extension, Vayalur Rd., Trichy 620 017, India

Staddon, P. L., J. D. Graves, et al. (1998). Effect of enhanced atmospheric CO2 on mycorrhizal colonization by Glomus mosseae in Plantago lanceolata and Trifolium repens. New Phytologist 139(3): 571-580. {a} Dep. Biol., Univ. York, PO Box 373, York YO1 5YW, UK

Vassilev, N., M. Vassileva, et al. (1998). Fertilizing effect of microbially treated olive mill wastewater on Trifolium plants. Bioresource Technology 66(2): 133-137. {a} Estac. Exp. Zaidin, CSIC, Prof. Albareda 1, 18008 Granada, Spain

Gautier, H., G. C. Varlet, et al. (1998). Comparison of horizontal spread of white clover (Trifolium repens L.) grown under two artificial light sources differing in their content of blue light. Annals of Botany London 82(1): 41-48. {a} INRA, Unite Bioclimatol., Domaine St. Paul, Site Agroparc, 84914 Avignon Cedex 9, France

Malinowski, D. P., D. P. Belesky, et al. (1998). Photosynthesis of white clover (Trifolium repens L.) germplasms with contrasting leaf size. Photosynthetica Prague 35(3): 419-427. {a} USDA-ARS, Appalachian Soil Water Conservation Res. Lab., P.O. Box 400, Beaver, VA 25813, USA

Beretta, V. and J. F. P. Lobato (1998). Intensive beef cattle production system: Evaluation of alternative winter feeding strategies for replacement heifers. Revista Brasileira de Zootecnia 27(1): 157-163. {a} Aluno CPG, Zootenia, UFRGS, Porto Alegre, Bolsista IB CNPq, Caixa Postal 776-90.001-970 Porto Alegre, RS, Brazil

Lobato, J. F. P., F. Deresz, et al. (1998). Improved pastures and supplementary feeding on the reproductive performance of primiparous cows. Revista Brasileira de Zootecnia 27(1): 47-53. {a} Dep. Zootecnia/Fac. Agronomia, UFRGS, Caixa Postal, 776-90001-970, Porto Alegre, RS, Brazil

Lawson, A. R., K. B. Kelly, et al. (1998). Defoliation frequency and genotype effects on stolon and root reserves in white clover. Australian Journal of Agricultural Research 49(6): 983-988. {a} Kyabram Dairy Cent., Inst. Sustainable Irrigated Agric., Dep. Nat. Res. Environ., RMB 3010, Kyabram, Vic. 3620, Australia

Eerens, J. P. J., R. J. Lucas, et al. (1998). Influence of the ryegrass endophyte (Neotyphodium lolii) in a cool-moist environment: II. Sheep production. New Zealand Journal of Agricultural Research 41(2): 191-199. {a} AgResearch, Ruakura Agric. Res. Cent., Private Bag 3123, Hamilton, New Zealand

Di, H. J., K. C. Cameron, et al. (1998). Nitrate leaching for dairy shed effluent and ammonium fertiliser applied to a free-draining pasture soil under spray or flood irrigation. New Zealand Journal of Agricultural Research 41(2): 263-270. Soil Plant Ecol. Sci. Div., P.O. Box 84, Lincoln Univ., Canterbury, New Zealand

Dudas, B., D. R. Woodfield, et al. (1998). Estimating the agronomic impact of white clover mosaic virus on white clover performance in the North Island Of New Zealand. New Zealand Journal of Agricultural Research 41(2): 171-178. {a} AgResearch Grasslands, Private Bag 11 008, Palmerston North, New Zealand

Eerens, J. P. J., R. J. Lucas, et al. (1998). Influence of the ryegrass endophyte (Neotyphodium lolii) in a cool-moist environment: III. Interaction with white clover. New Zealand Journal of Agricultural Research 41(2): 201-207. {a} AgResearch, Ruakura Agric. Res. Cent., Private Bag 3123, Hamilton, New Zealand

Eerens, J. P. J., M. H. P. W. Visker, et al. (1998). Influence of the ryegrass endophyte (Neotyphodium lolii) in a cool moist environment: IV. Plant parasitic nematodes. New Zealand Journal of Agricultural Research 41(2): 209-217. {a} AgResearch, Ruakura Agric. Res. Cent., Private Bag 3123, Hamilton, New Zealand

Hjelle, K. L. (1998). Herb pollen representation in surface moss samples from mown meadows and pastures in western Norway. Vegetation History and Archaeobotany 7(2): 79-96. {a} Dep. Botany, Univ. Bergen, Allegt. 41, N-5007 Bergen, Norway

Fraser, M. D. (1998). Diet composition of guanacos (Lama guanicoe) and sheep (Ovis aries) grazing in grassland communities typical of UK uplands. Small Ruminant Research 29(2): 201-212. {a} Animal Sci. Microbiol. Dep., Inst. Grassland Environ. Res., Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK

Hopkins, D. L., A. S. Beattie, et al. (1998). Meat quality of cryptorchid lambs grazing either dryland or irrigated perennial pasture with some silage supplementation. Meat Science 49(3): 267-275. {a} NSW Agriculture, P.O. Box 129, Cowra, NSW 2794, Australia

del, P. M., K. Osoro, et al. (1998). Effects of complementary grazing by goats on sward composition and on sheep performance managed during lactation in perennial ryegrass and white clover pastures. Small Ruminant Research 29(2): 173-184. {a} CIATA, Apdo 13, 33300 Villaviciosa, Asturias, Spain

Hanano, Y., Y. Fujii, et al. (1998). Weed control by hairy vetch (Vicia villosa LOTH.) in Shikoku area: Vegetation test and field survey in 1993 to 1997. Bulletin of the Shikoku National Agricultural Experiment Station(62): 45-69.

Zimmermann, L. R., A. A. Galussi, et al. (1998). Hard seed viability in Medicago sativa L., Lotus corniculatus L., Trifolium repens L., Trifolium pratense L. and Melilotus alba Med. Seed Science and Technology 26(1): 271-273. {a} Fac. Ciencias Agropecuarias, Univ. Nac. Entre Rios, CC 24, 3100 Parana Entre Rios, Argentina

Monaghan, R. M., J. D. Morrison, et al. (1998). Soil acidification through carbon cycling in legumes: A pot experiment examining the contributions from white clover, lotus, caucasian clover, and lucerne. New Zealand Journal of Agricultural Research 41(2): 243-250. AgResearch, Invermay Agric. Cent., Private Bag 50034, Mosgiel, New Zealand

Brink, G. E. and G. A. Pederson (1998). White clover response to a water-application gradient. Crop Science 38(3): 771-775. {a} USDA-ARS, Forage Res. Unit, P.O. Box 5367, Mississippi State, MS 39762, USA

Bailey, J. S. and A. S. Laidlaw (1998). Growth and development of white clover (Trifolium repens L.) as influenced by P and K nutrition. Annals of Botany London 81(6): 783-786. {a} Dep. Agric. Northern Ireland, Agric. Environ. Sci. Div., Newforge Lane, Belfast BT9 5PX, UK

Williams, W. M., K. M. Mason, et al. (1998). Genetic analysis of shikimate dehydrogenase allozymes in Trifolium repens L. Theoretical and Applied Genetics 96(6-7): 859-868. {a} AgRes. Grassland, Private Bag 11008, Palmerston North, New Zealand

Fulkerson, W. J., K. Slack, et al. (1998). Nutrients in ryegrass (Lolium spp.), white clover (Trifolium repens) and kikuyu (Pennisetum clandestinum) pastures in relation to season and stage of regrowth in a subtropical environment. Australian Journal of Experimental Agriculture 38(3): 227-240. {a} NSW Agric., Wollongbar Agric. Inst., Wollongbar, NSW 2477, Australia

Collins, R. P., M. T. Abberton, et al. (1998). Effects of divergent selection on correlations between morphological traits in white clover (Trifolium repens L.). Euphytica 101(3): 301-305. Legume Breeding Group, Inst. Grassland Environ. Res. Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK

McNabb, W. C., J. S. Peters, et al. (1998). Effect of condense tannins prepared from several forages on the in vitro precipitation of ribulose-1,5-bisphosphate carboxylase (Rubisco) protein and its digestion by trypsin (EC 2.4.21.4) and chymotrypsin (EC 2.4.21.1). Journal of the Science of Food and Agriculture 77(2): 201-212. {a} AgRes., Grassl. Res. Cent., Private Bag 11008, Palmerston North, New Zealand

Hay, A., L. Watson, et al. (1998). Identification of cell wall proteins in roots of phosphate-deprived white clover plants. Plant Physiology and Biochemistry Paris 36(4): 305-311. {a} Dep. Plant Biol. and Biotechnol., Massey Univ., Private Bag 11222, Palmerston North, New Zealand

Murakami, R. and A. Shirata (1998). Producting condition of the toxic components from Myrothecium roridum and it's toxicity to various plants. Journal of Sericultural Science of Japan 67(2): 135-142. Natl. Inst. Sericultural Entomol. Sci., 1-2, Ohwasi, Tsukuba, Ibaraki 305-8634, Japan

Hanninen, K. S. (1998). Effect of clovers as vegetative ground cover on the growth of red birch in nursery field production. Journal of Horticultural Science and Biotechnology 73(3): 393-398. {a} Univ. Oulu, Dep. Biol., FIN-90570 Oulu, Finland

Wilcox, A. (1998). Early plant succession on former arable land. Agriculture Ecosystems and Environment 69(2): 143-157. {a} Crop Environ. Res. Centre, Harper Adams, Newport TF10 8NB, UK

Caradus, J. R. and B. R. Christie (1998). Winterhardiness and artificial frost tolerance of white clover ecotypes and selected breeding lines. Canadian Journal of Plant Science 78(2): 251-255. AgResearch Grasslands, Private Bag 11008, Palmerston North, New Zealand

Gooding, M. J., N. D. Cosser, et al. (1998). Sheep grazing and defoliation of contrasting varieties of organically grown winter wheat with and without undersowing. Grass and Forage Science 53(1): 76-87. {a} Dep. Agric., Univ. Reading, Earley Gate, P.O. Box 236, Reading, Berkshire RG6 6AT, UK

McKirdy, S. J., R. A. C. Jones, et al. (1998). Determining the effectiveness of grazing and trampling by livestock in transmitting white clover mosaic and subterranean clover mottle viruses. Annals of Applied Biology 132(1): 91-105. {a} Agric. Western Australia, Locked Bag No. 4, Bentley Delivery Centre, WA 6983, Australia

Caradus, J. R. and D. R. Woodfield (1998). Genetic control of adaptive root characteristics in white clover. Plant and Soil 200(1): 63-69. AgRes. Grasslands, Private Bag 11008, Palmerston North, New Zealand

Wright, D. P., J. D. Scholes, et al. (1998). Effects of VA mycorrhizal colonization on photosynthesis and biomass production of Trifolium repens L. Plant Cell and Environment 21(2): 209-216. {a} Robert Hill Inst., Dep. Anim. Plant Sci., Univ. Sheffield, Sheffield S10 2TN, UK

Balzter, H., P. W. Braun, et al. (1998). Cellular automata models for vegetation dynamics. Ecological Modelling 107(2-3): 113-125. {a} Biometrie und Populationsgenet., Univ. Giessen, Ludwigstr. 27, D-35390 Giessen, Germany

Schroeder, N. C., R. B. Chapman, et al. (1998). Effect of potato mirid (Calocoris norvegicus) on white clover seed production in small cages. New Zealand Journal of Agricultural Research 41(1): 111-116. {a} Dep. Entomol. and Anim. Ecol., P.O. Box 84, Lincoln Univ., Lincoln, New Zealand

Ledergerber, S., P. W. Leadley, et al. (1998). Feeding behaviour of juvenile snails (Helix pomatia) to four plant species grown at elevated atmospheric CO2. Acta Oecologica 19(1): 89-95. {a} Sect. Conservation Biol., Dep. Integrative Biol., Univ. Basel, St. Johanns-Vorstadt 10, CH-4056 Basel, Switzerland

Ogura, S. I., M. Ohta, et al. (1998). Intra-ruminal property of sheep under white clover ingestion. 1. Foam stability of ruminal fluid, ruminal fermentation and ruminal motility under restricted feeding of white clover and orchardgrass. Grassland Science 43(4): 368-373. {a} Chugoku Natl. Agric. Exp. Stn., Kawai, Oda, Shimane 694, Japan

Woodman, R. F., W. L. Lowther, et al. (1998). Establishment response of 12 legumes to nitrogen fertiliser rate and placement when direct drilled into Hieracium-infested, montane tussock grasslands. New Zealand Journal of Agricultural Research 41(1): 53-63. {a} AgRes., Invermay Agric. Cent., Private Bag 50034, Mosgiel, New Zealand

Caradus, J. R. and D. F. Chapman (1998). Growth in grazed pastures of white clover breeding lines selected for extremes of leaf size, internode length, and nodal branching. New Zealand Journal of Agricultural Research 41(1): 49-52. {a} AgRes. Grasslands, Private Bag 11008, Palmerston North, New Zealand

Nie, Z. N., D. J. Barker, et al. (1998). Influence of the timing and duration of pastoral fallowing and nitrogen fertiliser on pasture and white clover (Trifolium repens) growth in hill country. New Zealand Journal of Agricultural Research 41(1): 19-29. {a} Dep. Anim. Prod., Univ. Melbourne, RMB 6200, Terang, VIC 3264, Australia

Fukuda, E., M. Yoshida, et al. (1998). A mathematical model on the dynamics of hardseededness of Trifolium repens L. seeds following the retention in the bovine rumen. Grassland Science 43(4): 398-405. {a} Tohoku Natl. Agric. Exp. Stn., Morioka 020-01, Japan

Hummel, R. L., R. L. Brandenburg, et al. (1998). Effects of ozone on reproduction of twospotted spider mite (Acari: Tetranychidae) on white clover. Environmental Entomology 27(2): 388-394. {a} Dep. Entomol., North Carolina State Univ., Raleigh, NC 27695-7613, USA

Vassileva, M., N. Vassilev, et al. (1998). Rock phosphate solubilization by Aspergillus niger on olive cake-based medium and its further application in a soil-plant system. World Journal of Microbiology and Biotechnology 14(2): 281-284. {a} Estacion Experimental Zaidin, CSIC, Prof. Albareda, 1 Granada-18008, Spain

Norton, M. R. and G. R. Johnstone (1998). Occurrence of alfalfa mosaic, clover yellow vein, subterranean clover red leaf, and white clover mosaic viruses in white clover throughout Australia. Australian Journal of Agricultural Research 49(4): 723-728. {a} NSW Agric., Wagga Wagga Agric. Inst., Wagga Wagga, NSW 2650, Australia

Vlassak, K. M., E. Luyten, et al. (1998). The Rhizobium sp. BR816 nodO gene can function as a determinant for nodulation of Leucaena leucocephala, Phaseolus vulgaris, and Trifolium repens by a diversity of Rhizobium spp. Molecular Plant Microbe Interactions 11(5): 383-392. {a} F. A. Janssens Lab. Genet., K. Mercierlaan 92, B-3001 Heverlee, Belgium

Marilley, L., G. Vogt, et al. (1998). Bacterial diversity in the bulk soil and rhizosphere fractions of Lolium perenne and Trifolium repens as revealed by PCR restriction analysis of 16S rDNA. Plant and Soil 198(2): 219-224. Lab. Microbiologie, Univ. Neuchatel, Rue Emile-Argand 11, CH-2007 Neuchatel, Switzerland

Ogura, S. I. and K. Sugawara (1998). The change of feeding behavior and intra-ruminal property with intake of white clover on sheep. Tohoku Journal of Agricultural Research 48(3-4): 63-73. {a} Lab. Land Ecol., Dep. Bio-remediation, Fac. Agric., Tohoku Univ., Sendai, Miyagi 981-8555, Japan

Taylor, J. E. and J. A. Thomson (1998). Bracken litter as mulch: Glasshouse evaluation of phytotoxicity. Australian Journal of Experimental Agriculture 38(2): 161-169. {a} Sch. Biol. Sci., Univ. New South Wales, Sydney, NSW 2052, Australia

Eckard, R. J. and D. R. Franks (1998). Strategic nitrogen fertiliser use on perennial ryegrass and white cloverpasture in north-western Tasmania. Australian Journal of Experimental Agriculture 38(2): 155-160. {a} Inst. Land Food Resour., Univ. Melbourne, RMB 2460, Hazeldean Road, Ellinbank, VIC 3820, Australia

Pederson, G. A. and G. E. Brink (1998). Cyanogenesis effect on insect damage to seedling white clover in a Bermudagrass sod. Agronomy Journal 90(2): 208-210. {a} USDA-ARS, Crop Sci. Res. Lab., Forage Res. Unit, PO Box 5367, Mississippi State, MS 39762, USA

Carter, M. R. and H. T. Kunelius (1998). Influence of non-inversion loosening on permanent pasture productivity. Canadian Journal of Soil Science 78(1): 237-239. Agric. and Agri-Food Can., Res. Cent., Charlottetown, Prince Edward Island C1A 7M8, Canada

Rodet, G., B. E. Vaissiere, et al. (1998). Status of self-pollen in bee pollination efficiency of white clover (Trifolium repens L.). Oecologia Berlin 114(1): 93-99. {a} INRA, Equipe Rech. Pollinisation Entomophile, Stn. Zool. Apidol., Domaine Saint-Paul, Site Agroparc, F-84914 Avignon Cedex 9, France

Del, P. M., I. A. Wright, et al. (1997). Effects of sward height and clover availability on performance of ewes and lambs stocked in low nitrogen fertilized ryegrass-clover pastures. Investigacion Agraria Produccion y Sanidad Animales 12(1-3): 41-52. {a} Centro de Investigacion Aplicada y Tecnologia Agroalimentaria, Apdo. 13.3300, Villaviciosa, Asturias

Louault, F., P. Carrere, et al. (1997). Efficiencies of ryegrass and white clover herbage utilization in mixtures continuously grazed by sheep. Grass and Forage Science 52(4): 388-400. {a} INRA-Agron., Fonctionnement Gestion Ecosyst. Prairial, Domaine Crouelle, 234 Av. du Brezet, F-63039 Clermont-Ferrand Cedex 2, France

Elgersma, A. and L. Fengrui (1997). Effects of cultivar and cutting frequency on dynamics of stolon growth and leaf appearance in white clover grown in mixed swards. Grass and Forage Science 52(4): 370-380. {a} Wageningen Agric. Univ., Dep. Agron., Haarweg 333, 6709 RZ Wageningen, Netherlands

Frankow, L. B. E., K. Svanang, et al. (1997). Effects of an autumn defoliation on overwintering, spring growth and yield of a white-clover/grass sward. Grass and Forage Science 52(4): 360-369. {a} SLU, Dep. Crop Prod. Sci., P.O. Box 7043, S-750 07 Uppsala, Sweden

Gooding, R. F. and J. Frame (1997). Effects of continuous sheep stocking and strategic rest periods on the sward characteristics of binary perennial grass/white clover associations. Grass and Forage Science 52(4): 350-359. {a} SAC Auchincruive, Ayr KA6 5HW, UK

Staley, T. E. and D. R. Morris (1998). A model system for assessing low-level liming effects on white clover symbiosis development in an acidic soil. Soil Science 163(3): 230-240. {a} USDA-ARS-NAA, Appalachian Soil Water Conservation Res. Lab., PO Box 400, Beaver, WV 25813-0400, USA

Bernard, E. C. and P. L. Jennings (1997). Host range and distribution of the clover root-knot nematode, Meloidogyne trifoliophila. Journal of Nematology 29(4 Suppl.): 662-672. Dep. Entomol. Plant Pathol., Univ. Tenn., Box 1071, Knoxville, TN 37901-1071, USA

Mercer, C. F. and K. J. Miller (1997). Evaluation of 15 trifolium spp. and of Medicago sativa as hosts of four Meloidogyne spp. found in New Zealand. Journal of Nematology 29(4 Suppl.): 673-676. AgRes. Grasslands, PB 11-008, Palmerston North, New Zealand

Sholberg, P. L., E. J. Hogue, et al. (1998). Effect of orchard cover crop on incidence of low-temperature-basidiomycete rot of stored Spartan apples. Canadian Journal of Plant Science 78(1): 125-129. Agriculture Agri-Food Canada, Pacific Agri-Food Res. Cent., Summerland, BC V0H 1Z0, Canada

White, D. W. R., D. R. Woodfield, et al. (1998). Mortal: A mutant of white clover defective in nodal root development. Plant Physiology Rockville 116(3): 913-921. {a} Plant Molecular Genetics Lab., Grasslands Div., AgRes., Private Bag 11008, Palmerston North, New Zealand

Vasseur, L. and C. Potvin (1998). Natural pasture community response to enriched carbon dioxide atmosphere. Plant Ecology 135(1): 31-41. {a} Dep. Biol., Saint-Mary's Univ., Halifax, NS B3H 3C3, Canada

Tanakamaru, S., S. Hayashida, et al. (1998). Specific difference in root penetration into the compacted cakes in crop plants. Japanese Journal of Crop Science 67(1): 63-69. {a} Okayama Univ., Okayama 700-0082, Japan

Kouame, C. N., K. H. Quesenberry, et al. (1998). Genetic diversity for root-knot nematode resistance in white clover and related species. Genetic Resources and Crop Evolution 45(1): 1-8. {a} Inst. des Savanes 01 BP 633 Bouake, Cote d'Ivoire, Ivory Coast

Michaelson, Y. T. P. T., A. H. Marshall, et al. (1997). The use of isoenzyme markers to determine pollen flow and seed paternity mediated by Apis mellifera and Bombus spp. in Trifolium repens, a self-incompatible plant species. Journal of Apicultural Research 36(2): 57-62. {a} Inst. Grassl. Environ. Res., Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Gudmundsson, J. (1997). Seed production potential of native legumes in Iceland. Buvisindi 11: 41-48. {a} Rannsoknastofnun Landbunadarins, Keldnaholti, 112 Reykjavik, Iceland

Orradottir, B. and A. Helgadottir (1997). Collection of Icelandic legumes. Buvisindi 11: 9-27. Rannsoknastofnun Landbunadarins, Keldnaholti, 112 Reykjavik, Iceland

Yeates, G. W., S. Saggar, et al. (1998). Impact of clover cyst nematode (Heterodera Trifolii) infection on soil microbial activity in the rhizosphere of white clover (Trifolium repens). A pulse-labelling experiment. Nematologica 44(1): 81-90. {a} Landcare Res., Private Bag 11052, Palmerston North, New Zealand

Abdin, O., B. E. Coulman, et al. (1998). Yield and yield components of corn interseeded with cover crops. Agronomy Journal 90(1): 63-68. {a} Dep. Plant Sci., Macdonald Campus, McGill Univ., 21111 Lakeshore Rd., Ste. Anne de Bellevue, PQ H9X 3V9, Canada

Hamilton, N. R. S. and M. J. M. Hay (1998). Vascular architecture of a large-leafed genotype of Trifolium repens. Annals of Botany London 81(3): 441-448. {a} Environ. Biol. Dep., Inst. Grassland Environ. Res., Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK

Kiso, S. and M. Noshiro (1997). Management methods for early harvesting timothy (Phleum pratense L.) dominant meadows. 2. Effects of early harvest on botanical composition, dry matter yield and total digestible nutrients contents in timothy-white clover (Trifolium repens L.) mixtures. Grassland Science 43(3): 258-265. {a} Hokkaido Tenpoku Agric. Exp. Station, Midorigaoka, Hamatonbetsu-cho, Esashi-gun, Hokkaido 098-57, Japan

Ibekwe, A. M., J. S. Angle, et al. (1998). Zinc and cadmium effects on rhizobia and white clover using chelator-buffered nutrient solution. Soil Science Society of America Journal 62(1): 204-211. {a} Dep. Agron., Univ. Md., College Park, MD 20742, USA

Frankow, L. B. E. (1997). Pests and diseases of white clover leaves in Sweden. Vaxtskyddsnotiser 61(4): 113-115. {a} SLU, Inst. Vaxtodlingslara, Box 7043, S-750 07 Uppsala, Sweden

Cowan, A. A., A. H. Marshall, et al. (1997). Influence of moisture availability on yield and quality of Trifolium species. Seed Science and Technology 25(3): 523-535. Inst. Grassland Environmental Res., Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK

White, T. A., B. D. Campbell, et al. (1997). Invasion of temperate grassland by a subtropical annual grass across an experimental matrix of water stress and disturbance. Journal of Vegetation Science 8(6): 847-854. {a} AgRes., Grassland Res. Cent., Private Bag 11008, Palmerston North, New Zealand

Elgersma, A. and J. Hassink (1997). Effects of white clover (Trifolium repens L.) on plant and soil nitrogen and soil organic matter in mixtures with perennial ryegrass (Lolium perenne L.). Plant and Soil 197(2): 177-186. {a} C.T. de Wit Graduate Sch. Production Ecology, Wageningen Agricultural Univ., Dep. Agronomy, Haarweg 333, 6709 RZ Wageningen, Netherlands

Manderscheid, R., J. Bender, et al. (1997). Response of biomass and nitrogen yield of white clover to radiation and atmospheric CO2 concentration. Environmental and Experimental Botany 38(2): 131-143. {a} Inst. Ecotoxicol., Federal Agric. Res. Cent., Bundesallee 50, D-38116 Braunschweig, Germany

Taylor, N. L., J. A. Anderson, et al. (1998). Registration of Trifolium ambiguum X T. repens hexaploid germplasm HBC/F2-C. Crop Science 38(1): 286-287. {a} Dep. Agronomy, Univ. Kentucky, Agric. Sci. Build. N., Lexington, KY 40546, USA

McPhee, C. S., S. P. Bonser, et al. (1997). The role of apical dominance in the interpretation of adaptive architecture in prostrate plant species. Ecoscience 4(4): 490-500. Dep. Biol., Queen's Univ., Kingston, ON K7L 3N6, Canada

Lane, L. A., J. F. Ayres, et al. (1997). A review of the introduction and use of white clover (Trifolium repens L.) in Australia-significance for breeding objectives. Australian Journal of Experimental Agriculture 37(7): 831-839. {a} NSW Agric., Agric. Res. Advisory Station, Glen Innes, NSW 2370, Australia

Turner, L. B. and C. J. Pollock (1998). Changes in stolon carbohydrates during the winter in four varieties of white clover (Trifolium repens L.) with contrasting hardiness. Annals of Botany London 81(1): 97-107. Inst. Grassland Environ. Res., Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EB, UK

Hussain, S. W., W. M. Williams, et al. (1997). Transfer of clover cyst nematode resistance from Trifolium nigrescens Viv. to T. repens L. by interspecific hybridisation. Theoretical and Applied Genetics 95(8): 1274-1281. {a} AgResearch Grasslands, Private Bag 11008, Palmerston North, New Zealand

El, K. Z. A., J. S. Angle, et al. (1997). Zinc and cadmium effects on the early stages of nodulation in white clover. Agronomy Journal 89(6): 875-880. {a} Dep. Agronomy, Univ. Md., College Park, MC 20742, USA

Schneider, B., C. Marcone, et al. (1997). Characterization and classification of phytoplasmas from wild and cultivated plants RFLP and sequence analysis of ribosomal DNA. European Journal of Plant Pathology 103(8): 675-686. {a} Biol. Bundesanstalt Land- Forstwirtschaft, Inst. Pflanzenschutz Obstbau, D-69221 Dossenheim, Germany

Del, P. M. and K. Osoro (1997). Effect of sward height and vertical distribution of clover on performance of cashmere goats in autumn. Grass and Forage Science 52(3): 269-277. {a} CIATA, Apdo. 13, 33300 Villaviciosa, Asturias, Spain

Daineko, N. M. (1996). The crop capacity of the pasture agrocenosis in the case of their long utilization. Vyestsi Akademii Ahrarnykh Navuk Byelarusi(1): 52-55. {a} F. Skorina Gomel State Univ., Gomel, Belarus

Barthram, G. T. (1997). Shoot characteristics of Trifolium repens grown in association with Lolium perenne or Holcus lanatus in pastures grazed by sheep. Grass and Forage Science 52(3): 336-339. {a} Macaulay Land Use Res. Inst., Hartwood Res. Stn., Shotts, Lanarkshire ML7 4JY, UK

Johnson, R. H. and J. Morrison (1997). Effects of spring fertilizer nitrogen and sward height on production from perennial ryegrass/white clover swards grazed by beef cattle. Grass and Forage Science 52(3): 322-324. {a} Inst. Grassland Environ. Res., North Wyke Res. Stn., Okehampton, Devon EX20 2SB, UK

Schenk, U., H. J. Jaeger, et al. (1997). The response of perennial ryegrass/white clover mini-swards to elevated atmospheric CO2 concentrations: Effects on yield and fodder quality. Grass and Forage Science 52(3): 232-241. {a} Inst. Ecotoxicol., Federal Agric. Res. Cent., Bundesallee 50, D 38116 Braunschweig, Germany

Chaineau, C. H., J. L. Morel, et al. (1997). Phytotoxicity and plant uptake of fuel oil hydrocarbons. Journal of Environmental Quality 26(6): 1478-1483. {a} Lab. Soil Environ. Sci., ENSAIA-INRA/INPL B.P. 172, F-54505 Vandoeuvre-les-Nancy Cedex, France

Smith, J. D., P. Todd, et al. (1997). Modulation of statolith mass and grouping in white clover (Trifolium repens) growth in 1-g, microgravity and on the clinostat. Plant Journal 12(6): 1361-1373. {a} MS 239-11 NASA Ames Res. Cent., Moffett Field, CA 94035-1000, USA

Yin, X. S., R. J. Liu, et al. (1997). Effect of host plants and inoculum forms on the inoculum potential of arbuscular mycorrhizal fungi. Acta Botanica Sinica 39(8): 725-730. {a} Lab. Mycorrhizae, Laiyang Agric. Coll., Laiyang, Shandong 265200, China

Lotz, L. A. P., R. M. W. Groeneveld, et al. (1997). Yield losses of white cabbage caused by competition with clovers grown as cover crop. Netherlands Journal of Agricultural Science 45(3): 393-405. {a} Inst. Agrobiol. and Soil Fertility, P.O. Box 14, NL-6700 AA Wageningen, Netherlands

Luescher, A., G. R. Hendrey, et al. (1998). Long-term responsiveness to free air CO2 enrichment of functional types, species and genotypes of plants from fertile permanent grassland. Oecologia Berlin 113(1): 37-45. {a} Inst. Plant Sci., Swiss Federal Inst. Technol., CH-8092 Zurich, Switzerland

Liu, F. Y., J. Hodgson, et al. (1997). Comparative studies of herbage intake and performance of lambs grazing Yorkshire fog (Holcus lanatus) and tall fescue (Festuca arundinacea) pastures under rotational management in summer. New Zealand Journal of Agricultural Research 40(4): 475-487. {a} Dep. Plant Sci., Massey Univ., Palmerston North, New Zealand

Liu, F. Y., J. Hodgson, et al. (1997). Comparative studies of herbage intake and performance of lambs grazing Yorkshire fog (Holcus lanatus) and perennial ryegrass (Lolium perenne) pastures in winter. New Zealand Journal of Agricultural Research 40(4): 463-474. {a} Dep. Plant Sci., Massey Univ., Palmerston North, New Zealand

Montossi, F., J. Hodgson, et al. (1997). Herbage intake, ingestive behaviour and diet selection, and effects of condensed tannins upon body and wool growth in lambs grazing Lolium perenne and Holcus lanatus swards in summer. New Zealand Journal of Agricultural Research 40(4): 449-461. {a} Estacion Exp. Norte, Inst. Nacional Invest. Agropecuaria, Ruta 5, km 386, Tacuarembo, Uruguay

Allan, B. E. (1997). Grazing management of oversown tussock country: 3. Effects on liveweight and wool growth of Merino wethers. New Zealand Journal of Agricultural Research 40(4): 437-447. {a} Wattie Bush, Peel Forest, RD 22, Geraldine, New Zealand

Jorgensen, F. V. and E. S. Jensen (1997). Short-term effects of a dung pat on N2 fixation and total N uptake in a perennial ryegrass/white clover mixture. Plant and Soil 196(1): 133-141. Plant Ecosystems Nutrient Cycling, Plant Biol. Biogeochem. Dep., Riso Natl. Lab., DK-4000 Roskilde, Denmark

Ibekwe, A. M., J. S. Angle, et al. (1997). Differentiation of clover Rhizobium isolated from biosolids-amended soils with varying pH. Soil Science Society of America Journal 61(6): 1679-1685. {a} Dep. Agronomy, Univ. Maryland, College Park, MD 20742, USA

Pittock, C., J. J. Weinman, et al. (1997). The activity of a tobacco basic chitinase promoter in transgenic white clover provides insights into plant development and symbiosis. Australian Journal of Plant Physiology 24(5): 555-561. {a} Plant Microbe Interaction Group, Res. Sch. Biological Sci., Australian Natl. Univ., GPO Box 475, Canberra, ACT 2601, Australia

Gallagher, J. A., J. J. Volenec, et al. (1997). Starch hydrolytic enzyme activities following defoliation of white clover. Crop Science 37(6): 1812-1818. {a} Dep. Cell Biol., Inst. Grassl. Environ. Res., Aberystwyth, Dyfed SY23 3EB, UK

Frankow, L. B. E. and D. A. Danielsson (1997). Energy output and animal production from grazed grass/clover pastures in Sweden. Biological Agriculture and Horticulture 14(4): 279-290. {a} SLU, Dep. Crop Production Sci., P.O. Box 7043, S-750 07 Uppsala, Sweden

Browaldh, M. (1997). Nitrogen release from leaves and prunings of different tree species used as green manures. Biological Agriculture and Horticulture 14(4): 309-322. {a} EL RASTRO, Arzobispo Gonzalez 445, Stgo Cent., Santiago, Channel Islands

Broderick, G. A. and K. A. Albrecht (1997). Ruminal in vitro degradation of protein in tannin-free and tannin-containing forage legume species. Crop Science 37(6): 1884-1891. {a} U.S. Dairy Forage Res. Cent., Agric. Res. Serv., USDA, Madison, WI 53706, USA

Brink, G. E. and D. E. Rowe (1997). White clover clone response to alternative defoliation methods. Crop Science 37(6): 1832-1835. {a} USDA-ARS Forage Res. Unit, P.O. Box 5367, Mississippi State, MS 39762, USA

Griffith, G. S., R. Cook, et al. (1997). Ditylenchus dipsaci infestation of Trifolium repens. II. Dynamics of infestation development. Journal of Nematology 29(3): 356-369. {a} Inst. Grassland Environmental Res., Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Horn, H. and M. J. Aira (1997). Pollen analysis of honeys from the Los Lagos region in southern Chile. Grana 36(3): 160-168. {a} Landesanstalt Bienenkunde, Univ. Hohenheim, August von Hartmann-Strasse, 13.10-70593 Stuttgart, Germany

Arriola, L., B. A. Niemira, et al. (1997). Border cells and arbuscular mycorrhizae in four Amaranthaceae species. Phytopathology 87(12): 1240-1242. {a} Dep. Botany Plant Pathol., Michigan State Univ., East Lansing, MI 48824, USA

Collins, R. P., M. T. Abberton, et al. (1997). Response to divergent selection for stolon characters in white clover (Trifolium repens). Journal of Agricultural Science 129(3): 279-285. Legume Breeding Group, Inst. Grassl. Environ. Res., Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK

Stochmal, A. and W. Oleszek (1997). Changes of cyanogenic glucosides in white clover (Trifolium repens L.) during the growing season. Journal of Agricultural and Food Chemistry 45(11): 4333-4336. {a} Dep. Biochemistry, Inst. Soil Sci. Plant Cultivation, ul. Czartoryskich 8, 24-100 Pulawy, Poland

Gautier, H., G. C. Varlet, et al. (1997). Effects of blue light on the vertical colonization of space by white clover and their consequences for dry matter distribution. Annals of Botany London 80(5): 665-671. {a} INRA-Unite Bioclimatol., Domaine de St. Paul, Site Agroparc, 84914 Avignon Cedex 9, France

Jorgensen, F. V. and S. F. Ledgard (1997). Contribution from stolons and roots to estimates of the total amount of N2 fixed by white clover (Trifolium repens L.). Annals of Botany London 80(5): 641-648. {a} Plant Ecosystems Nutr. Cycling, Plant Biol. Biogeochem. Dep., Riso Natl. Lab., DK-4000 Roskilde, Denmark

Fumagalli, I., L. Mignanego, et al. (1997). Effects of tropospheric ozone on white clover plants exposed in open-top chambers or protected by the antioxidant ethylene-diurea (EDU). Agronomie Paris 17(5): 271-281. {a} ENEL Spa, CRAM, Environ. Mater. Res. Cent., Via Rubattino 54, I-20134 Milano, Italy

Frehner, M., A. Luscher, et al. (1997). Effects of elevated partial pressure of carbon dioxide and season of the year on forage quality and cyanide concentration of Trifolium repens L. from a FACE experiment. Acta Oecologica 18(3): 297-304. {a} Swiss Federal Inst. Technol., Plant Sci. Crop Physiol. Group, ETH-Zentrum, Universitaetstr. 2, CH-8092 Zurich, Switzerland

Zanetti, S. and U. A. Hartwig (1997). Symbiotic N-2 fixation increases under elevated atmospheric pCO-2 in the field. Acta Oecologica 18(3): 285-290. Inst. Plant Sci., Swiss Federal Inst. Technol., 8092 Zurich, Switzerland

Hebeisen, T., A. Luscher, et al. (1997). Effects of elevated atmospheric CO-2 and nitrogen fertilisation on yield of Trifolium repens and Lolium perenne. Acta Oecologica 18(3): 277-284. {a} Inst. Plant Sci., Swiss Federal Inst. Technol., 8092 Zurich, Switzerland

Luscher, A. and J. Nosberger (1997). Interspecific and intraspecific variability in the response of grasses and legumes to free air CO-2 enrichment. Acta Oecologica 18(3): 269-275. {a} Inst. Plant Sci., Swiss Federal Inst. Technol., CH-8092 Zurich, Switzerland

Sage, R. F., B. Schappi, et al. (1997). Effect of atmospheric CO-2 enrichment on Rubisco content in herbaceous species from high and low altitude. Acta Oecologica 18(3): 183-192. {a} Dep. Botany, Univ. Toronto, 25 Willcocks St., Toronto, ON M5S 3B2, Canada

Karam, M. F. (1997). Scanning electron microscope studies of seed characters in Trifolium L. (Fabaceae). Phytomorphology 47(1): 51-58. Sch. Biol. Sci., Univ. Wales, Swansea, Singleton Park, Swansea SA2 8PP, UK

Davison, T. M. and A. T. Lisle (1997). An evaluation of kikuyu-clover pastures as a dairy production system: 3. Dynamics of pasture composition and diet selection. Tropical Grasslands 31(2): 135-144. {a} Mutdapilly Res. Stn., MS 825, Peak Crossing, QLD 4306, Australia

Abdin, O. A., B. E. Coulman, et al. (1997). Establishment, development and yield of forage legumes and grasses as cover crops in grain corn in Eastern Canada. Journal of Agronomy and Crop Science 179(1): 19-27. {a} Dep. Plant Sci., Macdonald Campus, McGill Univ., 21111 Lakeshore Road, Ste. Anne de Bellevue, PQ H9X 3V9, Canada

Koemp, P. and M. S. McLachlan (1997). Interspecies variability of the plant/air partitioning of polychlorinated biphenyls. Environmental Science and Technology 31(10): 2944-2948. {a} Ecological Chem. Geochemistry, Univ. Bayreuth, Bayreuth 95440, Germany

Svenning, M. M., K. Rosnes, et al. (1997). Frost tolerance and biochemical changes during hardening and dehardening in contrasting white clover populations. Physiologia Plantarum 101(1): 31-37. {a} Dep. Plant Physiol. Microbiol., IBG, Univ. Tromso, N-9037 Tromso, Norway

Adler, A., H. Lew, et al. (1997). Effects of manuring and fertilizing on the Fusarium populations in grassland soils. Cereal Research Communications 25(3 Part 2): 721-722. Federal Office Agrobiol., Wieningerstr. 8, A-4020 Linz, Austria

Hussain, S. W. and W. M. Williams (1997). Evidence of functional unreduced gametes in Trifolium repens L. Euphytica 97(1): 21-24. {a} AgRes. Grasslands, Private Bag 11008, Palmerston North, New Zealand

Hutchings, M. J., R. Turkington, et al. (1997). Morphological plasticity in Trifolium repens L.: The effects of clone genotype, soil nutrient level, and the genotype of conspecific neighbours. Canadian Journal of Botany 75(8): 1382-1393. {a} Dep. Bot., Univ. British Columbia, Vancouver, BC V6T 1A4, Canada

Wheeler, D. M., D. C. Edmeades, et al. (1997). Effect of lime on yield, N fixation, and plant N uptake from the soil by pasture on 3 contrasting trials in New Zealand. New Zealand Journal of Agricultural Research 40(3): 397-408. Ruakura Res. Centre, New Zealand Pastoral Agriculture Res. Inst., Private Bag 3123, Hamilton, New Zealand

Hussain, S. W. and W. M. Williams (1997). Development of a fertile genetic bridge between Trifolium ambiguum M. Bieb. and T. repens L. Theoretical and Applied Genetics 95(4): 678-690. {a} AgRes. Grassl., Private Bag 11008, Palmerston North, New Zealand

Hogh, J. H., B. Wollenweber, et al. (1997). Kinetics of nitrate and ammonium absorption and accompanying H+ fluxes in roots of Lolium perenne L. and N-2-fixing Trifolium repens L. Plant Cell and Environment 20(9): 1184-1192. {a} Dep. Agric. Sci., Royal Vet. Agric. Univ., Thorvaldsensvej 40, DK-1871 Copenhagen, Denmark

Sasaya, T., T. Shimizu, et al. (1997). Biological, serological, and molecular variabilities of clover yellow vein virus. Phytopathology 87(10): 1014-1019. {a} Shikoku Natl. Agric. Exp. Stn., Zentsuji, Kagawa 765, Japan

Hay, F. S. and L. Bateson (1997). Effect of the nematophagous fungi Hirsutella rhossiliensis and Verticillium balanoides on stem nematode (Ditylenchus dipsaci) in white clover. Australasian Plant Pathology 26(3): 142-147. AgRes. Grasslands Res. Centre, Private Bag 11008, Palmerston North, New Zealand

Stone, C. E. and J. E. Cooper (1997). Nodulation of Trifolium repens at low pH by single and paired strains of Rhizobium leguminosarum biovar trifolii. Archives of Microbiology 168(3): 193-198. {a} Dep. Applied Plant Sci., Queen's Univ. Belfast, Newforge Lane, Belfast BT9 5PX, UK

Zanetti, S., U. A. Hartwig, et al. (1997). Does nitrogen nutrition restrict the CO-2 response of fertile grassland lacking legumes? Oecologia Berlin 112(1): 17-25. {a} Inst. Plant Sciences, Swiss Federal Inst. Technol., 8092 Zurich, Switzerland

Schils, R. L. M. (1997). Effect of a spring application of nitrogen on the performance of perennial ryegrass-white clover swards at two sites in the Netherlands. Netherlands Journal of Agricultural Science 45(2): 263-275. Res. Stn. Cattle Sheep and Horse Husbandry, Runderweg 6, NL-8219 PK Lelystad, Netherlands

Springer, T. L. (1997). Effect of bermudagrass height on clover establishment. Crop Science 37(5): 1663-1665. USDA-ARS, Dale Bumpers Small Farm Res. Cent., 6883 S. State Highway 23, Booneville, AR 72927-9214, USA

Voigt, P. W., D. R. Morris, et al. (1997). A soil-on-agar method to evaluate acid-soil resistance in white clover. Crop Science 37(5): 1493-1496. {a} USDA-ARS, Appalachian Soil Water Conserv. Res. Lab., P.O. Box 400, Beaver, WV 25813-0400, USA

Annicchiarico, P. and E. Piano (1997). Effect of selection under cultivation on morphological traits and yield of Ladino white clover landraces. Genetic Resources and Crop Evolution 44(5): 405-410. Ist. Sperimentale Colture Foraggere, viale Piacenza 29, I-20075 Lodi, Italy

Smith, S. R. (1997). Rhizobium in soils contaminated with copper and zinc following the long-term application of sewage sludge and other organic wastes. Soil Biology and Biochemistry 29(9-10): 1475-1489. Water Res. Cent., Henley Road, Medmenham, Marlow SL7 2HD, UK

Watson, C. A. and M. J. Goss (1997). Estimation of N-2-fixation by grass-white clover mixtures in cut or grazed swards. Soil Use and Management 13(3): 165-167. {a} Soil Biol. Unit, Land Resources Dep., SAC, Doig Scott Build., Craibstone Estate, Aberdeen AB21 9TQ, UK

Loetscher, M. and J. Noesberger (1997). Branch and root formation in Trifolium repens in influenced by the light environment of unfolded leaves. Oecologia Berlin 111(4): 499-504. {a} Chair Grassland Sci., Tech. Univ. Munich, D-85350 Freising-Weihenstephan, Germany

Jahufer, M. Z. Z., M. Cooper, et al. (1997). Pattern analysis of the diversity of morphological plant attributes and herbage yield in a world collection of white clover (Trifolium repens L.) germplasm characterised in a summer moisture stress environment of Australia. Genetic Resources and Crop Evolution 44(4): 289-300. {a} Dep. Agriculture, University Queensland, Brisbane, QLD 4072, Australia

Campbell, M. H., D. W. Burbidge, et al. (1997). Control of Carex appressa R.Br. using herbicides and surface sown pasture species. Plant Protection Quarterly 12(3): 120-124. {a} NSW Agric., Agric. Res. and Vet. Centre, Forest Road, Orange, NSW 2800, Australia

Hussain, S. W., W. M. Williams, et al. (1997). Development of a ploidy series from a single interspecific Trifolium repens L. x T. nigrescens Viv. F-1 hybrid. Theoretical and Applied Genetics 94(6-7): 821-831. {a} AgResearch Grasslands, Private Bag 11008, Palmerston North, New Zealand

Donaghy, D. J., J. M. Scott, et al. (1997). Effect of defoliation frequency and summer irrigation on survival of perennial (Lolium perenne) and biennial (Lolium multiflorum) ryegrass in the subtropics. Australian Journal of Experimental Agriculture 37(5): 537-545. {a} NSW Agric., Wollongbar Agric. Isnt., Wollongbar, NSW 2477, Australia

Sinclair, A. G., J. D. Morrison, et al. (1997). Determination of optimum nutrient element ratios in plant tissue. Journal of Plant Nutrition 20(9): 1069-1083. New Zealand Pastoral Agric. Res. Inst., Invermay Agric. Centre, Private Bag 50034, Mosgiel, New Zealand

Fries, L. L. M., R. S. Pacovsky, et al. (1997). Plant growth and arbuscular mycorrhizal fungal colonization affected by exogenously applied phenolic compounds. Journal of Chemical Ecology 23(7): 1755-1767. {a} Dep. Bot. Plant Pathol., Michigan State Univ., East Lansing, MI 48824, USA

Shimada, S., R. Rousseau, et al. (1997). Wavelength options for monitoring leghaemoglobin oxygenation gradients in intact legume root nodules. Journal of Experimental Botany 48(311): 1251-1258. {a} Agronomy Range Sci., Univ. California, Davis, CA 95616-8515, USA

Pedersen, H. L. (1997). Alleyway groundcover management impacts on soil, pests and yield components in blackcurrants (Ribes nigrum L.). Biological Agriculture and Horticulture 14(2): 159-169. Ministry Agric. Fisheries, Danish Inst. Plant Soil Sci., Dep. Fruit Vegetables, Kirstinebjergvej 6, DK-5792 Aarslev, Denmark

Kanai, H. (1997). Distribution of popular plants in Chubu District, Central Japan. 2. Vertical distribution. Journal of Japanese Botany 72(3): 172-189. 5-8-7 Maehara-cho, Koganei-shi, Tokyo 184, Japan

Creamer, N. G., M. A. Bennett, et al. (1997). Evaluation of cover crop mixtures for use in vegetable production systems. Hortscience 32(5): 866-870. {a} Horticultural Sci. Dep., N.C. State Univ., Box 7609, Raleigh, NC 27695, USA

Nie, Z. N., A. D. Mackay, et al. (1997). Changes in plant population density, composition and sward structure of a hill pasture during a pastoral fallow. Grass and Forage Science 52(2): 190-198. {a} Dep. Plant Sci., Massey Univ., Palmerston North, New Zealand

Marriott, C. A., J. M. Fisher, et al. (1997). Persistence and colonization of gaps in sown swards of grass and clover under different sward managements. Grass and Forage Science 52(2): 156-166. {a} Macaulay Land Use Res. Inst., Craigiebuckler, Aberdeen AB15 8QH, UK

Marriott, C. A., G. R. Bolton, et al. (1997). Factors affecting the stolon growth of white clover in ryegrass/clover patches. Grass and Forage Science 52(2): 147-155. {a} Macaulay Land Use Res. Inst., Craigiebuckler, Aberdeen AB15 8QH, UK

Elgersma, A. and H. Schlepers (1997). Performance of white clover/perennial ryegrass mixtures under cutting. Grass and Forage Science 52(2): 134-146. {a} Wageningen Agricultural Univ., Dep. Agronomy, Haarweg 333, 6709 RZ Wageningen, Netherlands

Lawson, A. R., K. B. Kelly, et al. (1997). Effect of defoliation frequency on an irrigated perennial pasture in northern Victoria. 2. Individual plant morphology. Australian Journal of Agricultural Research 48(6): 819-829. {a} Kyabram Dairy Cent., Inst. Sustainable Irrigated Agriculture, Agriculture Victoria, RMB 3010, Kyabram, Vic. 3620, Australia

Lawson, A. R., K. B. Kelly, et al. (1997). Effect of defoliation frequency on an irrigated perennial pasture in northern Victoria. 1. Seasonal production and sward composition. Australian Journal of Agricultural Research 48(6): 811-817. {a} Kyabram Dairy Cent., Inst. Sustainable Irrigated Agriculture, Agriculture Victoria, RMB 3010, Kyabram, Vic. 3620, Australia

Arnesen, A. K. M. (1997). Availability of fluoride to plants grown in contaminated soils. Plant and Soil 191(1): 13-25. Dep. Soil Water Sci., Agric. Univ. Norw., N-1432 As, Norway

Van, D. B. J., C. F. Mercer, et al. (1997). Variation in white clover for resistance to clover cyst nematode. New Zealand Journal of Agricultural Research 40(2): 223-229. AgResearch Grasslands, Private Bag 11008, Palmerston North, New Zealand

Griffith, G. S., R. Cook, et al. (1997). Ditylenchus dipsaci infestation of Trifolium repens. I. temperature effects, seedling invasion, and a field survey. Journal of Nematology 29(2): 180-189. Inst. Grassland Environ. Res., Aberystwyth, Dyfed SY23 3EB, UK

Abaye, A. O., V. G. Allen, et al. (1997). Grazing sheep and cattle together or separately: Effect on soils and plants. Agronomy Journal 89(3): 380-386. {a} Dep. Crop Soil Environ. Sci., Va. Polytech. Inst. and State Univ., Blacksburg, VA 24061-0404, USA

Sinclair, A. G., J. D. Morrison, et al. (1997). Effects and interactions of phosphorus and sulphur on a mown white clover/ryegrass sward. 3. Indices of nutrient adequacy. New Zealand Journal of Agricultural Research 40(2): 297-307. AgResearch, Invermay Agricultural Cent., Private Bag 50034, Mosgiel, New Zealand

Chapman, D. F. and J. R. Caradus (1997). Effects of improved, adapted white clover (Trifolium repens L.) germplasm on the productive properties of a hill pasture. New Zealand Journal of Agricultural Research 40(2): 207-221. {a} Dep. Agriculture Resource Management, Univ. Melbourne, Parkville, VIC 3052, Australia

Caradus, J. R. and D. R. Woodfield (1997). World checklist of white clover varieties II. New Zealand Journal of Agricultural Research 40(2): 115-206. AgResearch Grasslands, P.O. Box 11 008, Palmerston North, New Zealand

Reinhardt, C. F. and K. J. Hugo (1997). Simple regression models for the qualitative prediction of atrazine and terbuthylazine leaching. South African Journal of Plant and Soil 14(2): 58-62. {a} Dep. Plant Production Soil Sci., Univ. Pretoria, Pretoria 0002, South Africa

Gordon, A. J. and C. L. James (1997). Enzymes of carbohydrate and amino acid metabolism in developing and mature nodules of white clover. Journal of Experimental Botany 48(309): 895-903. {a} IGER-Inst. Grassl. Environ. Res., Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Sanchez, A. B., C. Coronado, et al. (1997). Structure and role in symbiosis of the exoB gene of Rhizobium leguminosarum bv trifolii. Molecular and General Genetics 255(2): 131-140. {a} Dep. Microbiol., Fac. Farmacia, Univ. Sevilla, E-41012 Sevilla, Spain

Philip, H. S., F. B. Dazzo, et al. (1997). Structural requirements of Rhizobium chitolipooligosaccharides for uptake and bioactivity in legume roots as revealed by synthetic analogs and fluorescent probes. Journal of Lipid Research 38(6): 1229-1241. Dep. Microbiol., Michigan State Univ., East Lansing, MI 48824, USA

Loetscher, M. and M. J. M. Hay (1997). Genotypic differences in physiological integration, morphological plasticity and utilization of phosphorus induced by variation in phosphate supply in Trifolium repens. Journal of Ecology 85(3): 341-350. AgRes. Grassl., Private Bag 11008, Palmerston North, New Zealand

Sessitsch, A., G. Hardarson, et al. (1997). Characterization of Rhizobium etli and other Rhizobium spp. that nodulate Phaseolus vulgaris L. in an Austrian soil. Molecular Ecology 6(7): 601-608. {a} Dep. Microbiol., Wageningen Agric. Univ., 6703 CT Wageningen, Netherlands

Berardo, N. (1997). Prediction of the chemical composition of white clover by near-infrared reflectance spectroscopy. Grass and Forage Science 52(1): 27-32. Ist. Sperimentale Cerealicoltura, Via Stezzano 24, 24100 Bergamo, Italy

Sherwood, R. T. (1997). Viruses of white clover in pastures of Pennsylvania, New York, and Vermont. Plant Disease 81(7): 817-820. USDA-ARS, Pasture Syst. Watershed Manage. Res. Lab., University Park, PA 16802-3702, USA

Kakes, P. (1997). Difference between the male female components of fitness associated with the gene Ac in Trifolium repens. Acta Botanica Neerlandica 46(2): 219-223. Fac. Biol., Dep. Ecology Ecotoxicology, Vrije Univ., de Boelelaan 1087, 1081 HV Amsterdam, Netherlands

Hay, F. S., J. H. Niezen, et al. (1997). Infestation of sheep dung by nematophagous fungi and implications for the control of free-living stages of gastro-intestinal nematodes. Veterinary Parasitology 70(4): 247-254. {a} AgRes., Grasslands Res. Cent., Private Bag 11008, Palmerston North, New Zealand

Davison, T. M., P. J. Frampton, et al. (1997). An evaluation of kikuyu-clover pastures as a dairy production system: I. pasture and diet. Tropical Grasslands 31(1): 1-14. {a} Mutdapilly Res. Stn., MS 825, Peak Crossing, QLD 4306, Australia

Davison, T. M., P. J. Frampton, et al. (1997). An evaluation of kikuyu-clover pastures as a dairy production system. 2. Milk production and system comparisons. Tropical Grasslands 31(1): 15-23. {a} Mutdapilly Res. Stn., MS 825, Peak Crossing, QLD 4306, Australia

Hogh, J. H. and J. K. Schjoerring (1997). Residual nitrogen effect of clover-ryegrass swards on yield and N uptake of a subsequent winter wheat crop as studied by use of 15N methodology and mathematical modelling. European Journal of Agronomy 6(3-4): 235-243. {a} Plant Nutr. Lab., Dep. Agric. Sci., Royal Vet. Agric. Univ., 40 Thorvaldsensvej, DK-1871 Copenhagen, Denmark

Vipond, J. E., G. Swift, et al. (1997). A comparison of diploid and tetraploid perennial ryegrass and tetraploid ryegrass/white clover swards under continuous sheep stocking at controlled sward heights: 3. Sward characteristics and animal output, years 4-8. Grass and Forage Science 52(1): 99-109. {a} Scottish Agric. Coll., Bush Estate, Penicuik, Midlothian EH26 OPH, UK

Wightman, P. S., M. F. Franklin, et al. (1997). The effect of sward height on responses of mini-swards of perennial ryegrass/white clover to slurry application. Grass and Forage Science 52(1): 42-51. {a} Agronomy Dep., SAC, Ferguson Build., Craibstone Estate, Bucksburn, Aberdeen AB21 9YA, UK

Guinchard, M. P., C. Robin, et al. (1997). Cold acclimation in white clover subjected to chilling and frost: Changes in water and carbohydrates status. European Journal of Agronomy 6(3-4): 225-233. {a} Lab. 'Agron. Environ.', ENSAIA-INRA, BP 172, F-54505 Vandoeuvre-les-Nancy, Cedex, France

Michaelson, Y. T. P. T., A. Marshall, et al. (1997). Self compatibility and heterosis in white clover (Trifolium repens L.). Euphytica 94(3): 341-348. Legume Breed. Group Plant Breed. Dep., Inst. Grassland Environ. Res., Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Anniccharico, P. (1997). Indirect selection for persistence and seed yield in large-leaved white clover. Plant Breeding 116(2): 192-194. Inst. Sperimentale per le Colture Foraggere, viale Piacenza 29, I-20075 Lodi, Italy

Annicchiarico, P. and E. Piano (1997). Response of white clover genotypes to intergenotypic and interspecific interference. Journal of Agricultural Science 128(4): 431-437. Ist. Sperimentale Colture Foraggere, 29 viale Piacenza, I-20075 Lodi, Italy

Penning, P. D., J. A. Newman, et al. (1997). Diet preferences of adult sheep and goats grazing ryegrass and white clover. Small Ruminant Research 24(3): 175-184. {a} Inst. Grassland Envioronmental Res., North Wyke, Okehampton, Devon EX20 2SB, UK

Chorlton, K. H., I. D. Thomas, et al. (1997). A forage grass and legume plant collecting expedition in Czechoslovakia 1992. Genetic Resources and Crop Evolution 44(3): 277-283. {a} Inst. Grassland Environ. Res., Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Singh, D. K., P. W. G. Sale, et al. (1997). Water relations of white clover (Trifolium repens L.) in a drying soil, as a function of phosphorus supply and defoliation frequency. Australian Journal of Agricultural Research 48(5): 675-681. Sch. Agriculture, La Trobe Univ., Bundoora, VIC 3083, Australia

Henry, D. A., R. J. Simpson, et al. (1997). Intrinsic shear strength of leaves of pasture grasses and legumes. Australian Journal of Agricultural Research 48(5): 667-674. {a} CSIRO Div. Animal Production, Private Bag PO Wembley, WA 6014, Australia

Breland, T. A. (1996). Phytotoxic effects of fresh and decomposing cover crop residues. Norwegian Journal of Agricultural Sciences 10(4): 355-362. Agricultural Univ. Norway, Dep. Biotechnol. Sci., P.O. Box 5040, N-1432 As, Norway

Clark, H., P. C. D. Newton, et al. (1997). Dry matter yield, leaf growth and population dynamics in Lolium perenne/Trifolium repens-dominated pasture turves exposed to two levels of elevated CO-2. Journal of Applied Ecology 34(2): 304-316. AgRes., Grasslands Res. Cent., Private Bag 11008, Palmerston North, New Zealand

Stockdale, C. R. (1997). Supplements improve the production of dairy cows grazing either white clover or paspalum-dominant pastures in late lactation. Australian Journal of Experimental Agriculture 37(3): 295-302. Dep. Nat. Resour. Environ., Kyabram Dairy Centre, Inst. Sustainable Irrigated Agric., RMB 3010, Kyabram, VIC 3620, Australia

Hiitola, K. and R. Eltun (1996). The effect of undersown cover crops on grain yield and the nitrogen content of plants and soil. Norsk Landbruksforsking 10(3-4): 211-220. {a} Norwegian Crop Res. Inst., Apelsvoll Res. Centre, 2858 Kapp, Norway

Schortemeyer, M., U. A. Hartwig, et al. (1996). Microbial community changes in the rhizospheres of white clover and perennial ryegrass exposed to free air carbon dioxide enrichment (FACE). Soil Biology and Biochemistry 28(12): 1717-1724. {a} Dep. Soil Water and Climate, Univ. Minnesota, 1991 Upper Buford Circle, St. Paul, MN 55108, USA

Mercer, C. F., J. L. Starr, et al. (1997). Host-parasite relationships of Meloidogyne trifoliophila isolates from New Zealand. Journal of Nematology 29(1): 55-64. {a} AgResearch Grasslands, PB 11-008, Palmerston North, New Zealand

Smith, H., K. McCallum, et al. (1997). Experimental comparison of the nature conservation value, productivity and ease of management of a conventional and a more species-rich grass ley. Journal of Applied Ecology 34(1): 53-64. Wildlife Conservation Res. Unit, Dep. Zool., South Parks Road, Oxford OX1 3PS, UK

Orr, R. J., P. D. Penning, et al. (1997). Diurnal patterns of intake rate by sheep grazing monocultures of ryegrass or white clover. Applied Animal Behaviour Science 52(1-2): 65-77. {a} Inst. Grassland Environ. Res., North Wyke, Okehampton EX20 2SB, UK

Montossi, F., J. Hodgson, et al. (1996). Effects of condensed tannins on animal performance in lambs grazing Yorkshire fog (Holcus lanatus) and annual ryegrass (Lolium multiflorum) dominant swards. Proceedings of the New Zealand Society of Animal Production 56: 118-121. {a} Estacion Experimental Norte, Inst. Investigacion Agropecuaria, INIA, Ruta 5, km 386, Tacuarembo, Uruguay

Woods, P. W., J. N. Couchman, et al. (1996). Dairy cow performance on limpograss (Hemarthria altissima). Proceedings of the New Zealand Society of Animal Production 56: 245-250. {a} AgRes., P.O. Box 194, Cumbers Rd., Kaikohe, New Zealand

Kim, P. K., D. J. Park, et al. (1997). Biological control of clover by Penicillium sp. Agricultural Chemistry and Biotechnology 40(1): 65-70. {a} Korea Res. Inst. Bioscience and Biotechnology, KIST, P.O. Box 115, Yusung, Taejon 305-600, South Korea

Jorajuria, D., L. Draghi, et al. (1997). The effect of vehicle weight on the distribution of compaction with depth and the yield of Lolium/Trifolium grassland. Soil and Tillage Research 41(1-2): 1-12. {a} Dep. Agric. Eng., Fac. Forestry and Agric. Sci., Natl. Univ. La Plata, Av. 60 y 119, P.O. Box 31, 1900 La Plata, Argentina

Davis, M. R. (1997). Comparative nutrient responses by Pinus radiata, Trifolium repens, Dactylis glomerata, and Hieracium pilosella on a Mackenzie Basin outwash plain soil. New Zealand Journal of Agricultural Research 40(1): 9-16. Forest Res. Inst., P. O. Box 465, Rangiora, New Zealand

Barona, A. and F. Romero (1997). Relationships among metals in the solid phase of soils and in wild plants. Water Air and Soil Pollution 95(1-4): 59-74. {a} Dep. Chem. Eng. Environ., Eng. High Sch., Univ. Basque Country, Alda Urquijo s/n, 48013 Bilbao, Spain

Rogers, M. E., C. L. Noble, et al. (1997). Selecting for salt tolerance in white clover (Trifolium repens): Chloride ion exclusion and its heritability. New Phytologist 35(4): 645-654. {a} Inst. Sustainable Irrigated Agric., Dep. Natural Resour. Environment, Ferguson Rd., Tatura, Victoria 3616, Australia

Hernandez, G. A., C. Matthew, et al. (1997). Effect of spring grazing management on perennial ryegrass and ryegrass-white clover pastures. 2. Tiller and growing point densities and population dynamics. New Zealand Journal of Agricultural Research 40(1): 37-50. {a} Programa Ganaderia, Colegio Postgraduados, Montecillo, Texcoco Edo. de Mexico, Mexico, CP 56230, Mexico

Hernandez, G. A., J. Hodgson, et al. (1997). Effect of spring grazing management of perennial ryegrass and ryegrass-white clover pastures. 1. Tissue turnover and herbage accumulation. New Zealand Journal of Agricultural Research 40(1): 25-35. Programa Ganaderia, Colegio Postgraduados, Montecillo, Texcoco Edo. de Mexico, Mexico CP 56230, Mexico

Caradus, J. R., P. T. P. Clifford, et al. (1997). Breeding and description of 'Grasslands Sustain', a medium-large-leaved white clover (Trifolium repens L.) cultivar. New Zealand Journal of Agricultural Research 40(1): 1-7. {a} AgRes. Grasslands, Private Bag 11008, Palmerston North, New Zealand

Ibekwe, A. M., J. S. Angle, et al. (1997). Enumeration and N-2 fixation potential of Rhizobium leguminosarum biovar trifolii grown in soil with varying pH values and heavy metal concentrations. Agriculture Ecosystems and Environment 61(2-3): 103-111. {a} Dep. Agron., Univ. Md., College Park, MD 20742, USA

Mowat, D. J. and S. Clawson (1996). Oviposition and hatching of the clover weevil Sitona lepidus Gyll. (Coleoptera: Curculionidae). Grass and Forage Science 51(4): 418-423. {a} Applied Plant Sci. Res. Div., Dep. Agric. for Northern Ireland, Newforge Lane, Belfast BT9 SPX, UK

Yarrow, N. H., P. D. Penning, et al. (1996). The effect of plane of winter nutrition and sward height on the performance of steers grazing grass/white clover swards. Grass and Forage Science 51(4): 424-433. {a} Inst. Grassland and Environ. Res., North Wyke, Okehampton, Devon EX20 2SB, UK

Stockdale, C. R. (1997). Influence of energy and protein supplements on the productivity of dairy cows grazing white clover swards in spring. Australian Journal of Experimental Agriculture 37(2): 151-157. Dep. Natural Resources Environ., Kyabram Dairy Centre, Inst. Sustainable Irrigated Agric., RMB 3010, Kyabram, VIC 3620, Australia

Evans, D. R., T. A. Williams, et al. (1996). Breeding and evaluation of new white clover varieties for persistency and higher yields under grazing. Grass and Forage Science 51(4): 403-411. {a} Inst. Grassland Environ. Res., Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Keady, T. W. J. and K. P. O (1996). An evaluation of the effects of rate of nitrogen fertilization of grassland on silage fermentation, in-silo losses, effluent production and aerobic stability. Grass and Forage Science 51(4): 350-362. {a} Agric. Res. Inst. Northern Ireland, Hillsborough, Co Down BT26 6DR, UK

Wightman, P. S., M. F. Franklin, et al. (1996). The response of mini-swards of perennial ryegrass/white clover to simulated rainfall following slurry application. Grass and Forage Science 51(4): 325-332. {a} Agron. Dep., SAC, The Ferguson Build., Craibstone Estate, Bucksburn, Aberdeen AB21 9YA, UK

Fulkerson, W. J. and K. Slack (1997). Productivity and persistence of irrigated lotus (Lotus pedunculatus) and white clover (Trifolium repens) in a kikuyu (Pennisetum clandestinum) pasture. Tropical Grasslands 30(4): 353-362. {a} NSW Agric., Wollongbar Agric. Inst., Wollongbar, NSW 2840, Australia

Expert, J. M., P. Jacquard, et al. (1997). Neighbourhood effect of genotypes of Rhizobium leguminosarum biovar trifolii, Trifolium repens and Lolium perenne. Theoretical and Applied Genetics 94(3-4): 486-492. {a} Lab. de Recherche sur les Symbiotes des Racines, INRA, 1 place Pierre Viala, 34060 Montpellier Cedex 1, France

Clark, S. G. and M. J. McFadden (1997). Yield and stolon characteristics of white clover (Trifolium repens L.) cultivars in perennial pasture in Victoria. Australian Journal of Experimental Agriculture 37(2): 159-164. {a} Agric. Victoria Pastoral Vet. Inst., Private Bag 105, Hamilton, VIC 3300, Australia

Honda, K., W. Nishii, et al. (1997). Oviposition stimulants for sulfur butterfly, Colias erate poliographys: Cyanoglucosides and synergists involved in host preference. Journal of Chemical Ecology 23(2): 323-331. Study Envionmental Sci., Fac. Integrated Arts Sci., Hiroshima Univ., Higashihiroshima 739, Japan

Murray, P. J., J. Vincent, et al. (1995). Feeding preferences of Sitona lineatus for a range of forage and edible legumes. Tests of Agrochemicals and Cultivars(16): 72-73. {a} Inst. Grassland Environ. Res., North Wyke Res. Stn., Okehampton, Devon EX20 2SB, UK

Murray, P. J., A. Hopkins, et al. (1996). Feeding preferences of the grey field slug (Deroceras reticulatum) for dicotyledonous species of permanent grassland. Tests of Agrochemicals and Cultivars(17): 74-75. Inst. Grassland Environmental Res., North Wyke Res. Station, Okehampton, Devon EX20 2SB, UK

Chiy, P. C. and C. J. C. Phillips (1997). Effects of sodium fertiliser on the chemical composition of perennial ryegrass and white clover leaves of different physiological ages. Journal of the Science of Food and Agriculture 73(3): 337-348. {a} Dep. Clin. Vet. Med., Univ. Cambridge, Cambridge, UK

McLeish, L. J., G. N. Berg, et al. (1997). Plant parasitic nematodes in white clover and soil from white clover pastures in Australia. Australian Journal of Experimental Agriculture 37(1): 75-82. {a} Plant Sci. Biotechnology, Agric. Victoria, La Trobe Univ., Bundoora, VIC 3083, Australia

Breland, T. A. (1996). Green manuring with clover and ryegrass catch crops undersown in small grains: Effects on soil mineral nitrogen in field and laboratory experiments. Acta Agriculturae Scandinavica Section B Soil and Plant Science 46(3): 178-185. Agric. Univ. Norway, Dep. Biotechnol. Sci., P.O. Box 5040, N-1432 As, Norway

Fothergill, M., D. A. Davies, et al. (1997). Morphological dynamics and seedling recruitment in young swards of three contrasting cultivars of white clover (Trifolium repens) under continuous stocking with sheep. Journal of Agricultural Science 128(2): 163-172. Inst. Grassland Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK

Besga, G., M. Pinto, et al. Agronomic and nutritional effects of Linz-Donawitz slag application to two pastures in Northern Spain. Nutrient Cycling in Agroecosystems 46(3): 157-167. {a} Servicio de Investigacion Mejora Agraria, Gobierno Vasco, Berreaga 1, 48160 Bizkaia, Spain

Sivakumaran, S., P. J. Lockhart, et al. (1997). Identification of soil bacteria expressing a symbiotic plasmid from Rhizobium leguminosarum bv. trifolii. Canadian Journal of Microbiology 43(2): 164-177. {a} Dep. Microbiol. and Genetics, Massey Univ., Palmerston North, New Zealand

Bragaloni, M. and E. Rea (1996). Effect of vesicular-arbuscular mycorrhizal fungi isolated from sand dunes on agronomic plants. Micologia Italiana 25(1): 85-91. Istituto Sperimentale Nutrizione delle Piante, MIRAAF, Roma, Italy

Kim, P. K., D. J. Park, et al. (1996). Screening of Penicillium sp. showing herbicidal activity on Trifolium repens L. Agricultural Chemistry and Biotechnology 39(6): 455-459. {a} Korea Res. Inst. Bioscience Biotechnol., KIST, P.O. Box 115, Yusung, Taejon 305-600, South Korea

Weidema, I. R. (1996). Inheritance of the isozyme isocitrate dehydrogenase (IDH) in a natural population of polyploid white clover (Trifolium repens L.). Hereditas Lund 125(1): 19-24. Dep. Plant Ecol., Bot. Inst., Univ. Copenhagen, Oster Farimagsgade 2D, DK-1353 Copenhagen K, Denmark

Haigh, P. M., D. G. Chapple, et al. (1996). Effect of silage additives on big-bale grass silage. Grass and Forage Science 51(3): 318-323. {a} ADAS Pwllpeiran Res. Centre., Cwmystwyth, Aberystwyth, Dyfed 5723 4AB, UK

Landhausser, S. M., K. J. Stadt, et al. (1996). Screening of control of a forest weed: Early competition between three replacement species and Calamagrostis canadensis or Picea glauca. Journal of Applied Ecology 33(6): 1517-1526. Dep. Renewable Resources, Univ. Alberta, Edmonton, AB T6G 2H1, Canada

Smith, R. S., H. Buckingham, et al. (1996). The conservation management of mesotrophic (meadow) grassland in northern England: 1. Effects of grazing, cutting date and fertilizer on the vegetation of a traditionally managed sward. Grass and Forage Science 51(3): 278-291. {a} Dep. Agric. Environ. Sci., Univ. Newcastle upon Tyne, Newcastle upon Tyne NE1 7RU, UK

Edwards, G. R., A. J. Parsons, et al. (1996). The spatial pattern of vegetation in cut and grazed grass/white clover pastures. Grass and Forage Science 51(3): 219-231. {a} Dep. Biol., Imperial Coll. Silwood Park, Ascot, Berks SL5 7PY, UK

Murray, P. J., A. Hopkins, et al. (1996). Feeding preferences of the grey field slug (Deroceras reticulatum) for dicotyledonous species of permanent grassland. Annals of Applied Biology 128(Suppl.): 74-75. Inst. Grassland Environ. Res., North Wyke Res. Stn., Okehampton, Devon EX20 2SB, UK

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Waipara, N. W., M. M. E. Di, et al. (1996). Pathogenicity of Cylindrocladium scoparium to pasture clover and grass species. Australasian Plant Pathology 25(3): 205-211. {a} New Zealand Pastoral Agric. Res. Inst., Private Bag 3123, Hamilton, New Zealand

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Ricciardelli, D. A. G. Characterization of honey from Veneto under quality and geographic origin profiles. Annali della Facolta di Agraria Universita degli Studi di Perugia 48: 457-492. Istituto Entomologia Agraria, Universita degli Studi di Perugia, Perugia, Italy

Schenk, U., H. J. Jaeger, et al. (1997). The response of perennial ryegrass/white clover swards to elevated atmospheric CO-2 concentrations. 1. Effects on competition and species composition and interaction with N supply. New Phytologist 135(1): 67-79. {a} Inst. Produktions- Okotoxikol., Bundesforschungsanstalt Landwirtschaft, Bundesallee 50, D 38116 Braunschweig, Germany

Frankow, L. B. E. (1997). Assimilate partitioning in three white clover cultivars in the autumn, and the effect of defoliation. Annals of Botany London 79(1): 83-87. SLU, Dep. Crop Production Sci., P.O. Box 7043, S-750 07 Uppsala, Sweden

Snow, C. S. R., R. H. Marrs, et al. (1997). Trends in soil chemistry and floristics associated with the establishment of a low-input meadow system on an arable clay soil in Essex. Biological Conservation 79(1): 35-41. {a} Ness Bot. Gardens, Ness, Neston, South Wirral L64 4AY, UK

Thamsborg, S. M., R. J. Jorgensen, et al. (1996). The influence of stocking rate on gastrointestinal nematode infections of sheep over a 2-year grazing period. Veterinary Parasitology 67(3-4): 207-224. {a} Dep. Clin. Studies-Large Anim. Med., Royal Veterinary Agric. Univ., 13 Buelowsvej, DK-1870 Frederiksberg C, Denmark

Pasumarty, S. V., S. Higuchi, et al. (1996). Influence of seed quality on field establishment and forage yield of white clover (Trifolium repens L.). Journal of Agronomy and Crop Science 177(5): 321-326. {a} Lab. Crop Sci., Iwate Univ., Morioka, Iwate 020, Japan

Zhou, J. D. B., R. Jing, et al. (1996). The research on tissue culture and somatic embryo induction and artificial seed of leguminous forage plants. Sichuan Daxue Xuebao Ziran Kexueban 33(6): 755-759. Natl. Lab. Grassland Biotechnol., Sichuan Univ., Chengdu 610064, China

Mawdsley, J. L. and R. D. Bardgett (1997). Continuous defoliation of perennial ryegrass (Lolium perenne) and white clover (Trifolium repens) and associated changes in the composition and activity of the microbial population of an upland grassland soil. Biology and Fertility of Soils 24(1): 52-58. {a} Inst. Grassland Environmental Research, Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Nagaoka, T., K. I. Umezu, et al. (1996). Selective inhibitors of germination of legume seeds in activated sludge compost. Plant Growth Regulation 20(3): 295-302. {a} Fac. Applied Biol. Sci., Hiroshima Univ., Kagamiyama 1-4-4, Higashi-Hiroshima 739, Japan

Grant, J. L., C. F. Mercer, et al. (1996). Effects of resistance in white clover (Trifolium repens) on Heterodera trifolii. Journal of Nematology 28(4): 492-500. {a} Hort Res., PB 92-169, Auckland, New Zealand

Chapman, R., J. Collins, et al. (1996). Control of legumes in a species-rich meadow re-created on land restored after opencast coal mining. Restoration Ecology 4(4): 407-411. {a} CSIRO Div. Plant Industry, Western Aust. Lab., Private Bag, PO, Wembley, WA 6014, Australia

Orgambide, G. G., H. S. Philip, et al. (1996). Subnanomolar concentrations of membrane chitolipooligosaccharides from Rhizobium leguminosarum biovar trifolii are fully capable of eliciting symbiosis-related responses on white clover. Plant and Soil 186(1): 93-98. {a} Dep. Microbiol., Mich. State Univ., East Lansing, MI 48824, USA

Del, P. M., I. A. Wright, et al. (1996). Effects of grazing by sheep or goats on sward composition in ryegrass/white clover pasture and on subsequent performance of weaned lambs. Grass and Forage Science 51(2): 142-154. {a} Macaulay Land Use Res. Inst., Craigiebuckler, Aberdeen AB15 8QH, UK

Gooding, R. F., J. Frame, et al. (1996). Effects of sward type and rest periods from sheep grazing on white clover presence in perennial ryegrass/white clover associations. Grass and Forage Science 51(2): 180-189. {a} SAC Auchincruive, Ayr KA6 5HW, UK

Collins, R. P., M. Fothergill, et al. (1996). Interactions between seedlings of perennial ryegrass and white clover cultivars in establishing swards. Grass and Forage Science 51(2): 163-169. {a} IGER, Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Collins, R. P., M. Fothergill, et al. (1996). The use of repeated-measurements analysis to describe the overwintering of white clover cultivars. Grass and Forage Science 51(2): 116-120. {a} Inst. Grassland and Environ. Res., Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Heber, U., C. Miyake, et al. (1996). Monodehydroascorbate radical detected by electron paramagnetic resonance spectrometry is a sensitive probe of oxidative stress in intact leaves. Plant and Cell Physiology 37(8): 1066-1072. {a} The Res. Inst. Food Sci., Kyoto Univ., Uji, Kyoto 611, Japan

Firrao, G., L. Carraro, et al. (1996). Molecular characterization of a phytoplasma causing phyllody in clover and other herbaceous hosts in Northern Italy. European Journal of Plant Pathology 102(9): 817-822. Dipartimento Biol. Applicata alla Difesa della Piante, Univ. di U dine, via Sci. 208, 33100 Udine, Italy

Kanai, H. (1996). Distribution of popular plants in Chubu district, central Japan. Journal of Japanese Botany 71(6): 338-354. 5-8-7, Maehara-cho, Koganei-shi, Tokyo 184, Japan

Edwards, G. R., J. A. Newman, et al. (1997). Use of cues by grazing animals to locate food patches: An example with sheep. Applied Animal Behaviour Science 51(1-2): 59-68. {a} Dep. Biol., Imperial Coll. at Silwood Park, Ascot SL5 7PY, UK

Chiy, P. C. and C. J. C. Phillips (1996). Effects of sodium fertiliser on the chemical composition of grass and clover leaves, stems and inflorescences. Journal of the Science of Food and Agriculture 72(4): 501-510. {a} Dep. Clin. Vet. Med., Univ. Cambridge, Cambridge CB3 0ES, UK

McKirdy, S. J. and R. A. C. Jones (1997). Further studies on the incidence of virus infection in white clover pastures. Australian Journal of Agricultural Research 48(1): 31-37. Cooperative Res. Centre, Legumes Mediterranean Agriculture, Univ. Western Australia, Nedlands, WA 6009, Australia

Stockdale, C. R. (1996). Substitution and production responses when lactating dairy cows graze in a white clover pasture supplemented with maize silage. Australian Journal of Experimental Agriculture 36(7): 771-776. Agric. Victoria, Kyabram Dairy Centre, Inst. Sustainable Irrigated Agric., RMB 3010, Kyabram, VIC 3620, Australia

Springer, T. L. (1996). Allelopathic effects on germination and seedling growth of clovers by endophyte-free and -infected tall fescue. Crop Science 36(6): 1639-1642. USDA-ARS, South Central Fam. Res. Cent., 6883 S. State Highway 23, Booneville, AR 72927-9214, USA

Tsuyuzaki, S. and F. Kanda (1996). Revegetation patterns and seedbank structure on abandoned pastures in northern Japan. American Journal of Botany 83(11): 1422-1428. {a} Grad. Sch. Environ. Earth Sci., Hokkaido Univ., Sapporo 060, Japan

Kusmartono, T. N. B., P. R. Wilson, et al. (1996). Effects of grazing chicory (Cichorium intybus) and perennial ryegrass (Lolium perenne)/white clover (Trifolium repens) pasture upon the growth and voluntary feed intake of red and hybrid deer during lactation and post-weaning growth. Journal of Agricultural Science 127(3): 387-401. {a} Dep. Anim. Sci., Massey Univ., Palmerston North, New Zealand

Rapp, K. (1996). Selection response for dry matter yield in white clover (Trifolium repens L.) using different selection methods. Norwegian Journal of Agricultural Sciences 10(3): 265-280. Holt Res. Cent., N-9002 Tromso, Norway

Turkington, R. (1996). Intergenotypic interactions in plant mixtures. Euphytica 92(1-2): 105-119. Botany Dep., Univ. British Columbia, Vancouver, BC V6T 1Z4, Canada

Dear, B. S. and J. M. Virgona (1996). Legumes in low-input perennial pastures of southern Australia: Historical role and future development. New Zealand Journal of Agricultural Research 39(4): 579-589. NSW Agric., Agric. Res. Inst., PMB Wagga Wagga, NSW 2650, Australia

Trolove, S. N., M. J. Hedley, et al. (1996). Uptake of phosphorus from different sources by Lotus pedunculatus and three genotypes of Trifolium repens. 2. Forms of phosphate utilised and acidification of the rhizosphere. Australian Journal of Soil Research 34(6): 1027-1040. {a} Dep. Soil Sci., Massey University, Palmerston North, New Zealand

Trolove, S. N., M. J. Hedley, et al. (1996). Uptake of phosphorus from different sources by Lotus pedunculatus and three genotypes of Trifolium repens. 1. Plant yield and phosphate efficiency. Australian Journal of Soil Research 34(6): 1015-1026. {a} Soil Sci. Dep., Massey Univ., Palmerston North, New Zealand

Frias, D., A. Henry, et al. (1996). Aspects of the biology, taxonomy and control of species of Coleophora (Lepidoptera: Coleophoridae) present in Chile. Acta Entomologica Chilena 20: 115-122. {a} Instituto Entomologia, Univ. Metropolitana de Ciencias de la Educacion, Casilla 147, Santiago, Chile

Zanetti, S., U. A. Hartwig, et al. (1996). Stimulation of symbiotic N-2 fixation in Trifolium repens L. under elevated atmospheric pCO-2 in a grassland ecosystem. Plant Physiology Rockville 112(2): 575-583. {a} Inst. Plant Sci., Swiss Federal Inst. Technol., 8092 Zurich, Switzerland

Caradus, J. R. and J. R. Crush (1996). Effect of recurrent selection for aluminum tolerance on shoot morphology and chemical content of white clover. Journal of Plant Nutrition 19(10-11): 1485-1492. {a} AgRes., Grasslands Res. Cent., Private Bag 11008, Palmerston North, New Zealand

Solangaarachchi, S. M. (1996). The influence of neighbouring grasses on the growth of white clover (Trifolium repens L.). Journal of the National Science Council of Sri Lanka 24(2): 95-110. Dep. Bot., Univ. Kelaniya, Kelaniya, Sri Lanka

MacDuff, J. H. and M. S. Dhanoa (1996). Diurnal and ultradian rhythms in K+ uptake by Trifolium repens under natural light patterns: Evidence for segmentation at different root temperatures. Physiologia Plantarum 98(2): 293-308. {a} Inst. Grassland Environ. Res., Aberystwyth, Dyfed SY23 3ER, UK

Loetscher, M. and J. Noesberger (1996). Influence of position and number of nodal roots on outgrowth of axillary buds and development of branches in Trifolium repens (L.). Annals of Botany London 78(4): 459-465. {a} Swiss Federal Inst. Technol., Inst. Plant Sci., ETH-Zentrum, CH-8092 Zurich, Switzerland

Bossio, J. C., C. E. Semino, et al. (1996). The in vitro biosynthesis of the exopolysaccharide produced by Rhizobium leguminosarum bv. trifolii, strain NA 30. Cellular and Molecular Biology Noisy Le Grand 42(5): 737-758. {a} Inst. Invest. Bioquim. Fund. Campomar, Fac. Cienc. Exactas Nat., U.B.A., Patricias Argentinas 435, 1405 Buenos Aires, Argentina

Larkin, P. J., J. M. Gibson, et al. (1996). Transgenic white clover: Studies with the auxin-responsive promoter, GH3, in root gravitropism and lateral root development. Transgenic Research 5(5): 325-335. {a} CSIRO Div. Plant Ind., GPO Box 1600, Canberra, ACT 2601, Australia

Murray, P. J., D. J. Hatch, et al. (1996). Impact of insect root herbivory on the growth and nitrogen and carbon contents of white clover (Trifolium repens) seedlings. Canadian Journal of Botany 74(10): 1591-1595. {a} Inst. Grassland Environ. Res., North Wyke Res. Stn., Okehampton, Devon EX20 2SB, UK

Hornig, R. and G. Buenemann (1996). Ground covers and fertigation in IP apple orchards: III. Biomass yield and nutrient uptake of the ground covers and influence on soil moisture and nutrients in the soil. Gartenbauwissenschaft 61(4): 164-173. Inst. Obstbau Baumschule, Univ. Hannover, Am Steinberg 3, 31157 Sarstedt, Germany

Goh, K. M., I. Mansur, et al. (1996). Biological nitrogen fixing capacity and biomass production of different understorey pastures in a Pinus radiata-pasture agroforestry system in New Zealand. Agroforestry Systems 34(1): 33-49. {a} Dep. Soil Sci., P.O. Box 84, Lincoln Univ., Canterbury, New Zealand

Visnak, R. (1996). Synanthropic vegetation of the Ostrava city area: Part 2. Preslia Prague 68(1): 59-94. Mlynska 271, CZ-471 27 Straz pod Ralskem, Czech Republic

Dove, H., R. W. Mayes, et al. (1996). Effects of species, plant part, and plant age on the n-alkane concentrations in the cuticular wax of pasture plants. Australian Journal of Agricultural Research 47(8): 1333-1347. {a} Div. Plant Industry, CSIRO, GPO Box 1600, Canberra, ACT 2601, Australia

Solangaarachchi, S. M. (1996). The influence of nodal roots on the growth and branching of white clover (Trifolium repens L.). Journal of the National Science Council of Sri Lanka 24(1): 27-35. Dep. Bot., Univ. Kelaniya, Kelaniya, Sri Lanka

Cook, A., C. A. Marriott, et al. (1996). Effects of soil mechanical impedance on root and shoot growth of Lolium perenne L., Agrostis capillaris and Trifolium repens L. Journal of Experimental Botany 47(301): 1075-1084. {a} Sports Turf Res. Inst., St. Ives Estates, Bingley, West Yorkshire BD16 1AU, UK

Corre, N., V. Bouchart, et al. (1996). Mobilization of nitrogen reserves during regrowth of defoliated Trifolium repens L. and identification of potential vegetative storage proteins. Journal of Experimental Botany 47(301): 1111-1118. {a} Lab. Physiol. Biochimie Vegetales, LA INRA, Inst. Recherche Biol. Appliquee, Universite, F-14032 Caen Cedex, France

Turkington, R. and P. A. Jolliffe (1996). Interference in Trifolium repens: Lolium perenne mixtures: Short- and long-term relationships. Journal of Ecology 84(4): 563-571. {a} Dep. Bot., Univ. British Columbia, Vancouver, BC V6T 1Z4, Canada

Stuefer, J. F., K. H. De, et al. (1996). Exploitation of environmental heterogeneity by spatial division of labour in a clonal plant. Functional Ecology 10(3): 328-334. {a} Dep. Plant Ecol. Evol. Biol., Utrecht Univ., PO Box 800-84, NL-3508 TB Utrecht, Netherlands

Ogura, S. I. and K. Sugawara (1996). Utilization of white clover (Trifolium repens L.) by ruminants. Intake of white clover by sheep in fixed and free feeding. Grassland Science 42(2): 134-140. {a} Land Ecol., Fac. Agric., Tohoku Univ., Kawatabi, Narugo, Miyagi 989-67, Japan

Sinclair, A. G., J. D. Morrison, et al. (1996). Effects and interactions of phosphorus and sulphur on a mown white clover/ryegrass sward: 2. Concentrations and ratios of phosphorus, sulphur, and nitrogen in clover herbage in relation to balanced plant nutrition. New Zealand Journal of Agricultural Research 39(3): 435-445. AgResearch, Invermay Agric. Cent., Private Bag 50034, Mosgiel, New Zealand

Sinclair, A. G., L. C. Smith, et al. (1996). Effects and interactions of phosphorus and sulphur on a mown white clover/ryegrass sward: 1. Herbage dry matter production and balanced nutrition. New Zealand Journal of Agricultural Research 39(3): 421-433. AgResearch, Invermay Agric. Cent., Private Bag 50034, Mosgiel, New Zealand

Teuber, N. and A. S. Laidlaw (1996). Influence of irradiance on branch growth of white clover stolons in rejected areas within grazed swards. Grass and Forage Science 51(1): 73-80. {a} Dep. Applied Plant Sci., The Queen's Univ. of Belfast, Plant Testing Stn., Crossnacreevy, Belfast BT6 9SH, UK

Greene, S. L. and G. A. Pederson (1996). Eliminating duplicates in germplasm collections: A white clover example. Crop Science 36(5): 1398-1400. {a} USDA-ARS Western Regional Plant Introduction Station, Washington State Univ., Prosser, WA 99350-9687, USA

Belaygue, C., J. Wery, et al. (1996). Contribution of leaf expansion, rate of leaf appearance, and stolon branching in growth of plant leaf area under water deficit in white clover. Crop Science 36(5): 1240-1246. INRA-ENSA.M, Lab. Ecophysiologie Plantes Stress Environnementaux, 2 place Viala, 34060 Montpellier Cedex 01, France

McLaughlin, M. R. and G. L. Windham (1996). Effects of peanut stunt virus, Meloidogyne incognita, and drought on growth and persistence of white clover. Phytopathology 86(10): 1105-1111. {a} USDA-ARS, Crop Sci. Res. Lab., Forage Res. Unit, Mississippi State, MS 39762, USA

Desjouis, M., D. F. Le, et al. (1996). Evidence for a polyamine-mediated control of soluble nitrogen mobilization during post-clipping re-growth of white clover (Trifolium repens L.). Plant Growth Regulation 19(3): 257-264. {a} Lab. de Physiol. Biochimie Vegetale, UA INRA 950, Inst. de Recherche Biol. Appliquee, Univ. de Caen, F-14032 Caen Cedex, France

MacDuff, J. H., S. C. Jarvis, et al. (1996). Inhibition of N-2 fixation by white clover (Trifolium repens L.) at low concentrations of NO-3-in flowing solution culture. Plant and Soil 180(2): 287-295. {a} Inst. Grassland Environmental Res., Aberystwyth, Dyfed, SY23 3EB, UK

Blumenthal, M. J., S. C. Aston, et al. (1996). Effect of temperature and moisture potential on germination and emergence in Lotus sp. Australian Journal of Agricultural Research 47(7): 1119-1130. {a} NSW Agric., Pasture Res. Unit, PO Box 63, Berry, NSW 2535, USA

Hill, M. J. (1996). Potential adaptation zones for temperature pasture species as constrained by climate: A knowledge-based logical modelling approach. Australian Journal of Agricultural Research 47(7): 1095-1117. CCMAR, PMB PO, Wembly, WA 6014, Australia

Przywara, L., H. Pirog, et al. (1996). The use of tissue culture methods in interspecific hybridization within the genus Trifolium L. Acta Biologica Cracoviensia Series Botanica 38: 53-65. {a} Dep. Plant Cytol. Embryol., Jagiellonian Univ., Gradzka 52, Poland

Marshall, A. H., I. R. James, et al. (1996). Ovule abortion in white clover (Trifolium repens L.). Annals of Applied Biology 128(1): 95-103. {a} Inst. Grassl. Environ. Res., Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Loetscher, M. and M. J. M. Hay (1996). Distribution of phosphorus and calcium from nodal roots of Trifolium repens: The relative importance of transport via xylem or phloem. New Phytologist 133(3): 445-452. {a} Grasslands Res. Centre, AgResearch, Private Bag 11008, Palmerston North, New Zealand

Smith, M. W., A. Shiferaw, et al. (1996). Legume cover crops as a nitrogen source for pecan. Journal of Plant Nutrition 19(7): 1117-1130. Dep. Horticulture and Landscape Architecture, Oklahoma State Univ., Stillwater, OK 74078-6027, USA

Mehrhoff, L. A. and R. Turkington (1996). Growth and survival of white clover (Trifolium repens) transplanted into patches of different grass species. Canadian Journal of Botany 74(8): 1243-1247. {a} Dep. Botany, The University British Columbia, Vancouver, BC V6T 1Z4, Canada

Marshall, A. H. (1995). Peduncle characteristics, inflorescence survival and reproductive growth of white clover (Trifolium repens L.). Grass and Forage Science 50(4): 324-330. IGER, Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Edwards, G. R., A. J. Parsons, et al. (1995). Relationship between vegetation state and bite dimensions of sheep grazing contrasting plant species and its implications for intake rate and diet selection. Grass and Forage Science 50(4): 378-388. {a} Dep. Biol., Imperial Coll. Silwood Park, Ascot, Berks SL5 7PY, UK

Laidlaw, A. S., P. Christie, et al. (1996). Effect of white clover cultivar on apparent transfer of nitrogen from clover to grass and estimation of relative turnover rates of nitrogen in roots. Plant and Soil 179(2): 243-253. {a} Dep. Applied Plant Sci., Plant Testing Station, Queen's Univ. Belfast, 50 Houston Road, Crossnacreevy, Belfast BT6 9SH, UK

Bullard, M. J. and T. J. Crawford (1995). Productivity of Lotus corniculatus L. (bird's-foot trefoil) in the UK when grown under low-input conditions as spaced plants, monoculture swards or mixed swards. Grass and Forage Science 50(4): 439-446. {a} Arthur Rickwood, Mepal, Ely, Cambs CB6 2BA, UK

Svenning, M. M., O. Junttila, et al. (1996). Differential rates of inhibition of N-2 fixation by sustained low concentrations of NH-4+ and NO-3-c in northern ecotypes of white clover (Trifolium repens L.). Journal of Experimental Botany 47(299): 729-738. {a} Dep. Plant Physiology, Microbiol., IBG, Univ. Tromso, N-9037 Tromso, Norway

Hay, M. J. M. and P. C. D. Newton (1996). Effect of severity of defoliation on the viability of reproductive and vegetative axillary buds of Trifolium repens L. Annals of Botany London 78(1): 117-123. AgRes. Grasslands, Private Bag 11008, Palmerston North, New Zealand

Newton, P. C. D. and M. J. M. Hay (1996). Clonal growth of white clover: Factors influencing the viability of axillary buds and the outgrowth of a viable bud to form a branch. Annals of Botany London 78(1): 111-115. AgRes. Grasslands Res. Centre, Private Bag 11008, Palmerston North, New Zealand

Maze, J. and R. Turkington (1996). The influence of pasture age, plant density, and genotype on intraspecific diversity of Trifolium repens (white clover). Canadian Journal of Botany 74(7): 1189-1192. Dep. Botany, Univ. British Columbia, Vancouver, BC V6T 1Z4, Canada

Wilson, J. B., W. M. King, et al. (1996). Vegetation zonation as related to the salt tolerance of species of brackish riverbanks. Canadian Journal of Botany 74(7): 1079-1085. {a} Botany Dep., Univ. Otago, P.O. Box 56, Dunedin, New Zealand

Virgona, J. M. and B. S. Dear (1996). Comparative performance of Caucasian clover (Trifolium ambiguum cv. Monaro) after 11 years under low-input conditions in south-eastern Australia. New Zealand Journal of Agricultural Research 39(2): 245-253. NSW Agric., Agric. Res. Inst., PMB Wagga Wagga, NSW 2650, Australia

Newton, P. C. D., H. Clark, et al. (1996). Interaction of soil moisture and elevated CO-2 on the above-ground growth rate, root length density and gas exchange of turves from temperature pasture. Journal of Experimental Botany 47(299): 771-779. {a} AgRes., Grasslands Res. Cent., Private Bag 11008, Palmerston North, New Zealand

Buchbauer, G., L. Jirovetz, et al. (1996). Comparative investigation of essential clover flower oils from Austria using gas chromatography-flame ionization detection, gas chromatography-mass spectrometry, and gas chromatography-olfactometry. Journal of Agricultural and Food Chemistry 44(7): 1827-1828. {a} Inst. Pharm. Chem., Univ. Vienna, Althanstrasse 14, A-1090 Vienna, Austria

Breland, T. A. and S. Hansen (1996). Nitrogen mineralization and microbial biomass as affected by soil compaction. Soil Biology and Biochemistry 28(4-5): 655-663. {a} Agric. Univ. Norway, Dep. Biotechnol. Sci., PO Box 5040, N-1432 As, Norway

Wellburn, F. A. M. and A. R. Wellburn (1996). Variable patterns of antioxidant protection but similar ethene emission differences in several ozone-sensitive and ozone-tolerant plant selections. Plant Cell and Environment 19(6): 754-760. {a} Inst. Environmental Biological Sci., Lancaster Univ., Lancaster LA1 4YQ, UK

Lotsche, M. and M. J. M. Hay (1996). Distribution of mineral nutrient from nodal roots of Trifolium repens: Genotypic variation in intra-plant allocation of 32P and 45Ca. Physiologia Plantarum 97(2): 269-276. AgRes. Grasslands, Private Bag 11008, Palmerston North, New Zealand

Stewart, J. and C. Potvin (1996). Effects of elevated CO-2 on an artificial grassland community: Competition, invasion and neighbourhood growth. Functional Ecology 10(2): 157-166. Dep. Biol., McGill Univ., 1205 Dr. Penfield, Montreal, PQ H3A 1B1, Canada

Dong, M., H. J. During, et al. (1996). Morphological responses to nutrient availability in four clonal herbs. Vegetatio 123(2): 183-192. {a} Dep. Plant Ecol. Evolutionary Biol., Utrecht Univ., Postbus 800.84, 3508 TB Utrecht, Netherlands

Bakker, J. P., E. S. Baaker, et al. (1996). Soil seed bank composition along a gradient from dry alvar grassland to Juniperus shrubland. Journal of Vegetation Science 7(2): 165-176. {a} Lab. Plant Ecol., Univ. Groningen, PO Box 14, NL-9750 Haren, Netherlands

Wardle, D. A., K. S. Nicholson, et al. (1996). Use of a comparative approach to identify allelopathic potential and relationship between allelopathy bioassays and "competition" experiments for ten grassland and plant species. Journal of Chemical Ecology 22(5): 933-948. {a} AgResearch, Ruakura Agric. Res. Cent., Private Bag 3123, Hamilton, New Zealand

Wilson, P. and M. Stine (1996). Floral constancy in bumble bees: Handling efficiency or perceptual conditioning? Oecologia Berlin 106(4): 493-499. {a} Harvard For., Harvard Univ., 22 Divinity Ave., Cambridge, MA 02138, USA

Buxton, D. R. (1996). Quality-related characteristics of forages as influenced by plant environment and agronomic factors. Animal Feed Science and Technology 59(1-3): 37-49. Field Crops Res. Unit, Agric. Res. Serv., US Dep. Agric., 1577 Agronomy Hall, Iowa State Univ., Ames, IA 50011, USA

Vassilev, N., I. Franco, et al. (1996). Improved plant growth with rock phosphate solubilized by Aspergillus niger grown on sugar-beet waste. Bioresource Technology 55(3): 237-241. {a} Estacion Experimental Zaidin, CSIC, Prof. Albareda 1, 18008 Granada, Spain

Kraft, M., H. J. Weigel, et al. (1996). Reflectance measurements of leaves for detecting visible and non-visible ozone damage to crops. Journal of Plant Physiology 148(1-2): 148-154. {a} Inst. fuer Biosystemtechnik, Bundesforschungsanstalt fuer Landwirtschaft, Bundesalle 50, D-38116 Braunschweig, Germany

Svenning, M. M. and J. H. MacDuff (1996). Low root temperature retardation of the mineral nitrogen induced decline in N-2 fixation by a northern ecotype of white clover. Annals of Botany London 77(6): 615-621. {a} Dep. Plant Physiology Microbiol., IBG, Univ. Tromso, N-9037 Tromso, Norway

Lawrence, M. J. (1996). Number of incompatibility alleles in clover and other species. Heredity 76(6): 610-615. Wolfson Lab. Plant Molecular Biol., Sch. Biological Sci., Univ. Birmingham, Birmingham B15 2TT, UK

Caradus, J. R. and D. F. Chapman (1996). Selection for and heritability of stolon characteristics in two cultivars of white clover. Crop Science 36(4): 900-904. {a} AgResearch Grasslands, Private Bag 11008, Palmerston North, New Zealand

Stopes, C., S. Millington, et al. (1996). Dry matter and nitrogen accumulation by three leguminous green manure species and the yield of a following wheat crop in an organic production system. Agriculture Ecosystems and Environment 57(2-3): 189-196. {a} Elm Farm Res. Cent., Newbury RG15 0HR, UK

Vazquez, F. J., V. Petrikova, et al. (1996). Use of poultry manure and plant cultivation for the reclamation of burnt soils. Biology and Fertility of Soils 22(3): 265-271. {a} Inst. Investigaciones Agrobiologicas Galicia, Apartado 122, D-15080 Santiago de Compostela, Spain

Ferary, S., J. Auger, et al. (1996). Trace identification of plant substances by combining gas chromatography-mass spectrometry and direct deposition gas chromatography - Fourier transform infrared spectrometry. Talanta 43(3): 349-357. {a} IBEAS URA CNRS 1298 SAVIT, University F. Rabelais, parc de Grandmont, 37200 Tours, France

Galloway, B. A. and L. A. Weston (1996). Influence of cover crop and herbicide treatment on weed control and yield in no-till sweet corn (Zea mays L.) and pumpkin (Cucurbita maxima Duch.). Weed Technology 10(2): 341-346. Dep. Hortic., Univ. Ky., Lexington, KY 40546, USA

Infante, M. L. and R. D. Morse (1996). Integration of no tillage and overseeded legume living mulches for transplanted broccoli production. Hortscience 31(3): 376-380. Dep. Horticulture, Virginia Polytechnic Inst. State Univ., Blacksburg, VA 24061-0327, USA

Sarathchandra, S. U., R. N. Watson, et al. (1996). Effects of chitin amendment of soil on microorganisms, nematodes, and growth of white clover (Trifolium repens L.) and perennial ryegrass (Lolium perenne L.). Biology and Fertility of Soils 22(3): 221-226. {a} AgRes., Ruakura Agric. Res. Centre, Private Bag 3123 Hamilton, New Zealand

Hay, M. J. M. and N. R. S. Hamilton (1996). Influence of xylem vascular architecture on the translocation of phosphorus from nodal roots in a genotype of Trifolium repens during undisturbed growth. New Phytologist 132(4): 575-582. {a} Grasslands Res. Cent., AgResearch, Private Bag 11008, Palmerston North, New Zealand

Van, D. B. J. and C. F. Mercer (1996). Variation in white clover for root-knot nematode resistance. New Zealand Journal of Agricultural Research 39(1): 137-148. AgRes. Grasslands, Private Bag 11008, Palmerston North, New Zealand

Rolfe, B. G., R. W. Carlson, et al. (1996). Defective infection and nodulation of covers by exopolysaccharide mutants of Rhizobium leguminosarum bv. trifolii. Australian Journal of Plant Physiology 23(3): 285-303. {a} Plant-Microbe Interactions Group, Res. Sch. Biol. Sci., Australian National University, GPO Box 475, Canberra, ACT 2601, Australia

Yasuoka, C. and S. Ishikawa (1996). Ecological studies on the naturalized and ruderal plants in Kochi City, Southwestern Japan. Memoirs of the Faculty of Science Kochi University Series D Biology 16-17: 57-67. Kochi Marunouchi Senior High Sch., Marunouchi, Kochi 780, Japan

Balestrini, R., M. G. Hahn, et al. (1996). Differential localization of carbohydrate epitopes in plant cell walls in the presence and absence of arbuscular mycorrhizal fungi. Plant Physiology Rockville 111(1): 203-213. {a} Dip. Biol. Vegetale, Universita Torino, Viale Mattioli 25, 10125, Torino, Italy

Mtengeti, E. J., D. Wilman, et al. (1996). Differences between twelve forage species in physical breakdown when eaten. Journal of Agricultural Science 126(3): 287-293. {a} Welsh Inst. Rural Studies, Univ. Wales, Aberystwyth, Dyfed SY23 3DD, UK

Wilman, D., E. J. Mtengeti, et al. (1996). Physical structure of twelve forage species in relation to rate of intake by sheep. Journal of Agricultural Science 126(3): 277-285. {a} Welsh Inst. Rural Studies, Univ. Wales, Aberystwyth, Dyfed SY23 3DD, UK

Gong, Y., M. G. Lambert, et al. (1996). Effects of contrasting sward heights within forage species on short-term ingestive behaviour of sheep and goats grazing grasses and legumes. New Zealand Journal of Agricultural Research 39(1): 83-93. {a} AgRes. Grasslands, Private Bag 11008, Palmerston North, New Zealand

Boyer, D. G., R. J. Wright, et al. (1996). Soil spatial variability relationships in a steeply sloping acid soil environment. Soil Science 161(5): 278-287. {a} USDA-ARS, P.O. Box 867, Beckley, WV 25802-0867, USA

Volenec, J. J., A. Ourry, et al. (1996). A role for nitrogen reserves in forage regrowth and stress tolerance. Physiologia Plantarum 97(1): 185-193. {a} Dep. Agronomy, Purdue Univ., West Lafayette, IN 47907-1150, USA

Harris, S. L. and D. A. Clark (1996). Effect of high rates of nitrogen fertiliser on white clover growth, morphology, and nitrogen fixation activity in grazed dairy pasture in northern New Zealand. New Zealand Journal of Agricultural Research 39(1): 149-158. Dairying Res. Corp., Private Bag 3123, Hamilton, New Zealand

Sarathchandra, S. U., J. A. Brown, et al. (1996). Rhizobacteria harmful to seedling growth in white clover (Trifolium repens L.) and perennial ryegrass (Lolium perenne L.). New Zealand Journal of Agricultural Research 39(1): 129-136. AgRes., Ruakura Agric. Res. Centre, Private Bag 3123, Hamilton, New Zealand

Wedderburn, M. E., K. D. Adam, et al. (1996). Effect of oversown ryegrass (Lolium perenne) and white clover (Trifolium repens) on the genetic structure of New Zealand hill pastures. New Zealand Journal of Agricultural Research 39(1): 41-52. {a} AgRes., Whatawhata Res. Centre, Private Bag 3089, Hamilton, New Zealand

Newton, P. C. D., C. C. Bell, et al. (1996). Carbon dioxide emissions from mineral springs in Northland and the potential of these sites for studying the effects of elevated carbon dioxide on pastures. New Zealand Journal of Agricultural Research 39(1): 33-40. AgRes. Grasslands, Private Bag 11008, Palmerston North, New Zealand

Tikhaya, N. I., M. D. Fedorovskaya, et al. (1995). Ecto-ATPase (nucleotidase) in vitro activity of sterile isolated roots. Fiziologiya Rastenii Moscow 42(6): 821-827. {a} K.A. Timiryazev Inst. Plant Physiol., Russ. Acad. Sci., ul. Botanicheskaya 35, 127276 Moscow, Russia

Bohne, H. and D. Rauch (1996). Effects of the agroforestry land use system on mineral nitrogen content and water potential in a Haplic Luvisol and on growth of Acer pseudoplatanus. Zeitschrift fuer Pflanzenernaehrung und Bodenkunde 159(2): 143-148. Institut Obstbau Baumschule, Universitaet Hannover, Am Steinberrg 3, D-31157 Sarstedt, Germany

Murray, P. J. (1996). Evaluation of a range of varieties of white clover for resistance to feeding by weevils of the genus Sitona. Plant Varieties and Seeds 9(1): 9-14. Inst. Grassland Environ. Res., North Wyke Res. Stn., Okehampton, Devon EX20 2SB, UK

Hanley, M. E., M. Fenner, et al. (1996). The effect of mollusc grazing on seedling recruitment in artificially created grassland gaps. Oecologia Berlin 106(2): 240-246. {a} Dep. Biol., Univ. Southampton, SO16 7PX, UK

Hill, M. J. (1996). Defining the white clover zone in eastern mainland Australia using a model and a geographic information system. Ecological Modelling 86(2-3): 245-252. CSIRO Div. Anim. Product., Pastoral Res. Lab., Private Bag, P.O., Armidale, NSW 2350, Australia

Reader, S. M., T. E. Miller, et al. (1996). Cytological analysis of plant chromosomes using rapid in situ hybridization. Euphytica 89(1): 121-124. John Innes Centre, Colney, Norwich NR4 7UH, UK

Kanno, T. (1995). Study on productivity and utilization of tropical and temperate grasses under intensive grazing. Sochi Shikenjo Kenkyu Hokoku(52): 19-109. Dep. Grassl. Plann., Natl. Grassland Res. Inst., 768 Senbonmatsu, Nishinasuno, Tochigi 329-27, Japan

Oginosako, Z., H. Sawada, et al. (1996). Phenotypic variations in plant architecture, biomass allocation and clonal growth pattern among white clover (Trifolium repens L.) populations inhabiting different altitudes of Mt. Fuji. Grassland Science 41(4): 319-324. United Sch. Agric. Sci., Gifu Univ., 1-1 Yanagido, Gifu 501-11, Japan

Sugawara, K. and T. Isawa (1995). Seasonal variation of nitrogen fixation by in situ determination in white clover (Trifolium repens L.): Orchardgrass (Dactylis glomerata L.). Grassland Science 41(1): 67-70. Grassland Res. Lab., Fac. Agric., Tohoku University, Kawatabi, Narugo, Miyagi 989-967, Japan

Sawada, H., Z. Oginosako, et al. (1995). Variation in seed reproductive characters within the seed population of white clover (Trifolium repens L.) in a Trifolium repens-Zoysia japonica coexisting Sward. Grassland Science 41(1): 1-8. {a} Fac. Agric., Shizuoka University, Ooya-836, Shizuoka 422, Japan

Kulakov, V. A., O. M. Balaeva, et al. (1995). Effect of long-term application of mineral and organic fertilizers on productivity of pasturable agrophytocenoses and agrochemical soil characteristics. Agrokhimiya(11): 66-75. V.R. Vil'yams All-Russ. Res. Inst. Fodder, Lugovaya, Russia

Takahashi, Y., S. Saitoh, et al. (1995). Studies in Allelopathic interactions among some grassland species. 6. Screening of allelopathic activities from native grassland species by using the lettuce seed bioassay with the plant shoot extracts. Grassland Science 41(3): 232-239. {a} Chugoku Natl. Agric. Exp. Stn., Kawai, Oda, Shimane 694, Japan

Caradus, J. R. and M. B. Forde (1996). Characterisation of white clover populations collected from the Caucasus and high altitude regions of eastern Turkey. Genetic Resources and Crop Evolution 43(2): 143-155. AgResearch Grasslands, Private Bag 11008, Palmerston North, New Zealand

Benton, J., J. Fuhrer, et al. (1995). Results from the UN/ECE ICP-crops indicate the extent of exceedance of the critical levels of ozone in Europe. Water Air and Soil Pollution 85(3): 1473-1478. {a} ICP-Crops Coordination Cent., Dep. Life Sci., Nottingham Trent Univ., Clifton Lane, Nottingham NG11 8NS, UK

Heagle, A. S., J. E. Miller, et al. (1995). Response of a white clover indicator system to tropospheric ozone at eight locations in the United States. Water Air and Soil Pollution 85(3): 1373-1378. {a} U.S. Dep. Agric., ARS, Raleigh, NC, USA

Kisljuk, O. S., T. V. Kusnetzova, et al. (1996). On the modelling of clone geometry in Asarum europaeum. Journal of Theoretical Biology 178(4): 399-404. {a} Inst. Math. Problems Biol., Pushchino, Serpukhov District, Moscow region 142292, Russia

Yang, X., V. C. Baligar, et al. (1996). Cadmium effects on influx and transport of mineral nutrients in plant species. Journal of Plant Nutrition 19(3-4): 643-656. {a} Appalachian Soil Water Conservation Res. Lab., U.S. Dep. Agric., Agric. Res. Serv., Beckley, WV 25802-0867, USA

Hornig, R. and G. Buenemann (1996). Ground covers and fertigation in IP apple orchards. II. Nutrient status of the apple trees. Gartenbauwissenschaft 61(1): 1-7. {a} Inst. Obstbau und Baumschule der Univ. Hannover, Am Steinberg 3, 31157 Sarstedt, Germany

Allen, V. G., J. P. Fontenot, et al. (1996). Forage systems for beef production from conception to slaughter: III. Finishing systems. Journal of Animal Science 74(3): 625-638. {a} Dep. Plant Soil Sci., Tex. Tech Univ., Lubbock, TX 79409-2122, USA

Jongen, M., P. Fay, et al. (1996). Effects of elevated carbon dioxide and arbuscular mycorrhizal infection on Trifolium repens. New Phytologist 132(3): 413-423. {a} Bot. Dep., Trinity Coll., Univ. Dublin, Dublin 2, Ireland

Wheeler, D. M. (1996). Solution concentrations required for near maximum yield in ryegrass and white clover when grown in a low ionic strength solution: Preliminary results. Journal of Plant Nutrition 19(3-4): 565-572. Ruakura Res. Cent., New Zealand Pastoral Agric. Res. Inst. Co. Ltd., Private Bag 3123, Hamilton, New Zealand

Kammerl, R. and U. Simon (1995). On the rate of water loss of forage grasses and legumes in the primary growth at defined stages of growth. Wirtschaftseigene Futter 41(2): 182-195. Technische Univ. Muenchen, Lehrstuhl Gruenlandlehre, D-85350 Freising-Weihenstephan, Germany

Hueging, H., M. Anger, et al. (1995). On the effect of intensive and extensive grazed grassland with a special regard to nitrate leaching. Wirtschaftseigene Futter 41(2): 172-181. Lehrstuhl Allgemeinen Pflanzenbau, Rheinischen Friedrich-Wilhelms-Univ. Bonn, Katzenburgweg 5, D-53115 Bonn, Germany

Pederson, G. A., T. E. Fairbrother, et al. (1996). Cyanogenesis and climatic relationships in U.S. white clover germplasm collection and core subset. Crop Science 36(2): 427-433. {a} USDA-ARS, Crop Sci. Res. Lab., Forage Res. Unit, P.O. Box 5367, Mississippi State, MS 39762, USA

Springer, T. L. (1996). Effect of bermudagrass stubble height on clover establishment in the western mid-South. Arkansas Agricultural Experiment Station Research Series(449): 72-75. USDA-ARS, South Central Family Farm Res. Cent., Booneville, AR, USA

Glotov, N. V., O. E. Maksimenko, et al. (1995). Ecological and genetic variability of the white clover Trifolium repens in natural populations in the Middle Ob River area. Ekologiya Moscow(5): 344-346. {a} Biol. Res. Inst., St. Petersburg State Univ., Oranienbaumskoe Shosse 2, 198904 Stary Peterhof, Russia

Heagle, A. S., R. A. Reinert, et al. (1996). Response of white clover to ozone in different environments. Journal of Environmental Quality 25(2): 273-278. {a} USDA-ARS, Air Quality Res. Unit, 1509 Varsity Drive, Raleigh, NC 27606, USA

Yang, X., V. C. Baligar, et al. (1996). Plant tolerance to nickel toxicity: II Nickel effects on influx and transport of mineral nutrients in four plant species. Journal of Plant Nutrition 19(2): 265-279. {a} U.S. Dep. Agric., Agric. Res. Serv., Appalachian Soil Water Conservation Res. Lab., P.O. Box 867, Beckley, WV 25802-0867, USA

Kazimierska, E. M. (1995). Morphology and fertility of a spontaneous octoploid of white clover (Trifolium repens L.). Journal of Applied Genetics 36(4): 341-352. Inst. Plant Genet., Polish Acad. Sci., Strzeszynska 34, 60-479 Poznan, Poland

Chorlton, K. H., I. D. Thomas, et al. (1996). A forage grass and small grain legume plant collecting expedition in south east Poland, 1990. Genetic Resources and Crop Evolution 43(1): 69-77. {a} AFRC Inst. Grassland Environ. Res., Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Saebo, A. and L. M. Mortensen (1996). The influence of elevated CO-2 concentration on growth of seven grasses and one clover species in a cool maritime climate. Acta Agriculturae Scandinavica Section B Soil and Plant Science 46(1): 49-54. Norwegian Crop Res. Inst., Saerheim Res. Centre, N-4062 Klepp St., Norway

Breland, T. A. (1996). Green manuring with clover and ryegrass catch crops undersown in small grains: Crop development and yields. Acta Agriculturae Scandinavica Section B Soil and Plant Science 46(1): 30-40. Agric. Univ. Norway, Dep. Biotechnol. Sci., Box 5040, N-1432 As, Norway

Kerley, S. J. and S. C. Jarvis (1996). Preliminary studies of the impact of excreted N on cycling and uptake of N in pasture systems using natural abundance stable isotopic discrimination. Plant and Soil 178(2): 287-294. {a} Inst. Grassland Environ. Res., N. Wyke, Okehampton, Devon EX20 2SB, UK

Ledgard, S. F., M. S. Sprosen, et al. (1996). Nitrogen fixation by nine white clover cultivars in grazed pasture, as affected by nitrogen fertilization. Plant and Soil 178(2): 193-203. {a} AgRes. Ruakura Agric. Res. Cent., Private Bag 3123, Hamilton, New Zealand

Young, W. C. I. and H. W. Youngberg (1996). Cropping systems for perennial ryegrass seed production: I. Minimum tillage establishment of rotation crops in stubble without burning. Agronomy Journal 88(1): 73-77. {a} Dep. Crop Soil Sci., Oregon State Univ., Corvallis, OR 97331-3002, USA

Tiwari, S. C. and R. R. Mishra (1995). Seasonal variation in dehydrogenase and urease activity in hilly soils under grasslands and forests. Journal of the Indian Society of Soil Science 43(4): 689-690. {a} Dep. Forestry, N. Eastern Regional Inst. Sci. Technol., Nirjuli, Itanagar, Arunachal Pradesh 791 109, India

Hay, F. S. and L. Regnault (1995). Introduction of the endoparasitic nematophagous fungus Verticillium balanoides into white clover (Trifolium repens) by its host, stem nematode (Ditylenchus dipsaci). Australasian Plant Pathology 24(4): 249-251. AgResearch Grasslands Res. Cent., Private Bag 11008, Palmerston North, New Zealand

Popova, L. D., G. S. Posypanov, et al. (1995). Effect of white clover Trifolium repens L. cultivar Volat as an additional intermediate crop on potato yield. Izvestiya Timiryazevskoi Sel'skokhozyaistvennoi Akademii(3): 67-74. Dep. Plant Breed., K.A. Timiryazev Mosc. Agric. Acad., Moscow, Russia

Denisova, L. N. (1995). The spatial and age structure of Trifolium repens (Fabaceae) populations in different habitats. Botanicheskii Zhurnal St Petersburg 80(5): 18-25. St. Petersburg Soc. Naturalists, St. Petersburg, Russia

Jahufer, M. Z. Z., M. Cooper, et al. (1995). Variation among low rainfall white clover (Trifolium repens L.) accessions for morphological attributes and herbage yield. Australian Journal of Experimental Agriculture 35(8): 1109-1116. {a} NSW Agric., Agric. Res. Advisory Stn., PMB, Glen Innes, NSW 2370, Australia

Weisbach, C., U. A. Hartwig, et al. (1996). Whole-nodule carbon metabolites are not involved in the regulation of the oxygen permeability and nitrogenase activity in white clover nodules. Plant Physiology Rockville 110(2): 539-545. {a} Inst. Plant Sci., Swiss Federal Inst. Technol., 8092 Zurich, Switzerland

Yang, X., V. C. Baligar, et al. (1996). Plant tolerance to nickel toxicity: I. Influx, transport, and accumulation of nickel in four species. Journal of Plant Nutrition 19(1): 73-85. {a} U. S. Dep. Agric., Agric. Res. Serv., Appalachian Soil Water Conservation Res. Lab., PO Box 867, Beckley, WV 25802-0867, USA

Hulme, P. E. (1996). Herbivores and the performance of grassland plants: A comparison of arthropod, mollusc and rodent herbivory. Journal of Ecology 84(1): 43-51. Department Biological Sciences, University Durham, Science Laboratories, South Road, Durham DH1 3LE, UK

Brock, J. L., D. E. Hume, et al. (1996). Seasonal variation in the morphology of perennial ryegrass (Lolium perenne) and cocksfoot (Dactylis glomerata) plants and populations in pastures under intensive sheep grazing. Journal of Agricultural Science 126(1): 37-51. AgRes., Grasslands Res. Cent., Private Bag 11008, Palmerston North, New Zealand

Annicchiarico, P. and E. Piano (1995). Variation within and among Ladino white clover ecotypes for agronomic traits. Euphytica 86(2): 135-142. {a} Ist. Sper. per le Colt. Foraggere, 29 viale Piacenza, I-20075 Lodi, Milano, Italy

Mercer, C. F. and J. L. Grant (1995). Resistance of the white clover variety G49 and its parent lines to stem nematode (Ditylenchus dipsaci). New Zealand Journal of Agricultural Research 38(4): 495-499. {a} AgResearch Grasslands, Private Bag 11 008, Palmerston North, New Zealand

Crush, J. R. (1995). Phosphorus response of white clover (Trifolium repens L.) genotypes selected for tolerance of aluminium toxicity. New Zealand Journal of Agricultural Research 38(4): 451-456. AgResearch, Ruakura Agric. Research Centre, Private Bag 3123, Hamilton, New Zealand

Barratt, B. I. P., W. L. Lowther, et al. (1995). Seed coating with insecticide to improve oversown white clover (Trifolium repens L.) establishment in tussock grassland. New Zealand Journal of Agricultural Research 38(4): 511-518. AgResearch, Invermay Agric. Centre, Private Bag 50034, Mosgiel, New Zealand

Ledgard, S. F., M. S. Sprosen, et al. (1995). Productivity of white clover cultivars under intensive grazing, as affected by high nitrogen fertiliser application. New Zealand Journal of Agricultural Research 38(4): 473-482. {a} AgResearch, Ruakura Agric. Research Centre, Private Bag 3123, Hamilton, New Zealand

Marriott, C. A. and M. T. Zuazua (1996). Tillering and partitioning of dry matter and nutrients in Lolium perenne growing with neighbours of different species: Effects of nutrient supply and defoliation. New Phytologist 132(1): 87-95. {a} Macaulay Land Use Res. Inst., Craigiebuckler, Aberdeen AB9 2QJ, UK

Hutchinson, K. J., K. L. King, et al. (1995). Effects of rainfall, moisture stress, and stocking rate on the persistence of white clover over 30 years. Australian Journal of Experimental Agriculture 35(7): 1039-1047. CSIRO Div. Animal Prod., Armidale, NSW 2350, Australia

Widera, M. and K. Gediga (1994). The influence of lead on the growth Trifolium repens L. and Phleum pratense L. in the monocultures and plant mixture on light soil of different acidity. Acta Agrobotanica 47(1): 89-101. Zadlad Uprawy Roli, Instytut Uprawy, Nawozenia Gleboznawstwa, ul. Witosa 24, 55-250 Jelcz-Laskowice, Poland

Li, Y. G., G. Tanner, et al. (1996). The DMACA-HCl protocol and the threshold proanthocyanidin content for bloat safety in forage legumes. Journal of the Science of Food and Agriculture 70(1): 89-101. {a} CSIRO Div. Plant Industry, Canberra, ACT 2601, Australia

Breland, T. A. (1995). Green manuring with clover and ryegrass catch crops undersown in spring wheat: Effects on soil structure. Soil Use and Management 11(4): 163-167. Agric. Univ. Norway, Dep. Biotechnol. Sci., PO Box 5040, N-1432 As, Norway

Wilman, D., R. J. Young, et al. (1995). A note on the effect of protection from grazing on a sward containing seven grass species and white clover. Irish Journal of Agricultural and Food Research 34(2): 183-187. Welsh Inst. Rural Studies, Univ. Wales, Aberystwyth, Dyfed SY23 3DD, UK

Steen, R. W. J. and A. S. Laidlaw (1995). The effect of fertiliser nitrogen input on the stock-carrying capacity of ryegrass/white clover swards continuously grazed by beef cattle. Irish Journal of Agricultural and Food Research 34(2): 123-132. {a} Agric. Res. Inst. Northern Ireland, Hillsborough, Down BT26 6D6, UK

Faurie, O., J. F. Soussana, et al. (1996). Radiation interception, partitioning and use in grass-clover mixtures. Annals of Botany London 77(1): 35-45. {a} Fonctionnement Gestion Ecosysteme Prairial, INRA-Agronomie, 12 Av. du Brezet, 63039 Clermont-Ferrand Cedex 2, France

Fraser, J. and H. T. Kunelius (1995). Herbage yield and composition of white clover/grass associations in Atlantic Canada. Journal of Agricultural Science 125(3): 371-377. {a} Res. Centre, Agric. Agri-Food Canada, PO Box 3000, Lethbridge, AB T1J 4BJ, Canada

Ruz, J. B. E., R. E. White, et al. (1995). A comparison of nitrate leaching under clover-based pastures and nitrogen-fertilized grass grazed by sheep. Journal of Agricultural Science 125(3): 361-369. {a} Estacion Experimental Quilamapu, Chillan, Chile

Thompson, L. (1995). Sites of photoperception in white clover. Grass and Forage Science 50(3): 259-262. NERC Cent. Population Biol., Imperial Coll. Silwood Park, Ascot, Berks SL5 7PY, UK

Davies, D. A., M. Fothergill, et al. (1995). Animal production evaluation of herbage varieties: 2. Comparison of Aberystwyth S184, AberEndura and grasslands Huia white clovers. Grass and Forage Science 50(3): 227-240. {a} IGER, Bronydd Mawr Res. Station, Trecastle, Near Brecon, Powys LD3 8RD, UK

Murphy, W. M., A. D. M. Barreto, et al. (1995). Cattle and sheep grazing effects on soil organisms, fertility and compaction in a smooth-stalked meadowgrass-dominant white clover sward. Grass and Forage Science 50(3): 191-194. {a} Dep. Plant Soil Sci., Univ. Vt., Burlington, VT 05405-0082, USA

Murphy, W. M., A. D. M. Barreto, et al. (1995). Sward dynamics of a smooth-stalked meadowgrass dominant-white clover sward rotationally grazed by cattle and/or sheep. Grass and Forage Science 50(3): 183-190. {a} Dep. Plant Soil Sci., Univ. Vt., Burlington, VT 05446-0082, USA

Sagisaka, S. (1995). Dependence of wintering higher plants on basal metabolic rates and threshold concentrations of hexose for survival and regrowth. Soil Science and Plant Nutrition 41(4): 807-812. 4-5 Tondon 4-jo 4-chome, Kita-ku, Sapporo 001, Japan

Junttila, O., M. M. Svenning, et al. (1995). Influence of mineral nitrogen source on growth and frost resistance of white clover (Trifolium repens L.) and Timothy (Phleum pratense L.) seedlings. Acta Agriculturae Scandinavica Section B Soil and Plant Science 45(4): 261-267. {a} Dep. Plant Physiol. Microbiol., Univ. Tromso, N-9037 Tromso, Norway

Veresoglou, D. S., J. T. Tsialtas, et al. (1995). Caesium and strontium uptake by two pasture plant species grown in organic and inorganic soils. Agriculture Ecosystems and Environment 56(1): 37-42. {a} Greek Biotope/Wetland Centre, 14th Km. Thessaloniki-Mihaniona, 57001 Thermi, Greece

Wardle, D. A., K. S. Nicholson, et al. (1995). Ecological effects of the invasive weed species Senecio jacobaea L. (ragwort) in a New Zealand pasture. Agriculture Ecosystems and Environment 56(1): 19-28. {a} AgRes., Ruakura Agric. Res. Centre, Private Bag 3123, Hamilton, New Zealand

Caradus, J. R., A. D. Mackay, et al. (1995). Relationships between shoot and root characteristics of white clover cultivars differing in response to phosphorus. Journal of Plant Nutrition 18(12): 2707-2722. AgRes. Grasslands, Private Bag 11008, Palmerston North, New Zealand

Diaz, C. L., T. J. J. Logman, et al. (1995). Sugar-binding activity of pea lectin expressed in white clover hairy roots. Plant Physiology Rockville 109(4): 1167-1177. {a} Cent. Phytotechnol. Rijksuniv. Leiden-The Netherlands Organization Applied Sci. Res. TNO, Wassebaarseweg 64m 2333 AL Leiden, Netherlands

Heagle, A. S. and J. E. Miller (1996). Effects of rooting medium and fertilizer rate on response of white clover to tropospheric ozone. Environmental Pollution 91(1): 113-119. {a} Plant Pathol. Dep., USDA-ARS, North Carolina State Univ., Raleigh, NC 27695, USA

Jakobsen, H. B., K. Kristjansson, et al. (1995). Can social bees be influenced to choose a specific feeding station by adding the scent of the station of the hive air? Journal of Chemical Ecology 21(11): 1635-1648. {a} Dep. Food Sci. and Technol., Res. Cent. Aarslev, Kirstinebjergvej 12, 5792 Aarslev, Denmark

Belesky, D. P. and J. M. Fedders (1995). Influence of autumn management on orchardgrass: White clover swards. Agronomy Journal 87(6): 1186-1192. {a} USDA-ARS, Appalachian Soil Water Conservation Res. Lab., Beckley, WV 25802, USA

Lopez, F. A., N. Balcazar, et al. (1995). The recycling of Linz-Donawitz (LD) converter slag by use as a liming agent on pasture land. Waste Management and Research 13(6): 555-568. {a} Dep. Materials Recycling, Natl. Cent. Metallurgical Res. (CSIC), Avda. Gregorio del Amo 8, 28040 Madrid, Spain

Van, D. B. J., J. R. Caradus, et al. (1995). Screening white clover for resistance to grass grub in a controlled environment. New Zealand Journal of Agricultural Research 38(3): 329-336. {a} AgResearch Grasslands, Private Bag 11008, Palmerston North, New Zealand

Crush, J. R. (1995). Rhizobium strain X host genotype interactions for white clover (Trifolium repens L.) genotypes with different aluminium tolerances. New Zealand Journal of Agricultural Research 38(2): 163-167. AgResearch, Ruakura Agric. Res. Centre, Private Bag 3123, Hamilton, New Zealand

Caradus, J. R. (1995). Frost tolerance of Trifolium species. New Zealand Journal of Agricultural Research 38(2): 157-162. AgResearch Grasslands, Private Bag 11008, Palmerston North, New Zealand

Hume, D. E., T. B. Lyons, et al. (1995). Evaluation of 'Grasslands Puna' chicory (Cichorium intybus L.) in various grass mixtures under sheep grazing. New Zealand Journal of Agricultural Research 38(3): 317-328. AgResearch, Grasslands Res. Centre, Private Bag 11008, Palmerston North, New Zealand

Crush, J. R. and J. R. Caradus (1995). Cyanogenesis potential and iodine concentration in white clover (Trifolium repens L.) cultivars. New Zealand Journal of Agricultural Research 38(3): 309-316. {a} AgResearch, Ruakura Agric. Res. Centre, Private Bag 3123, Hamilton, New Zealand

Crush, J. R. (1995). Effect of VA mycorrhizas on phosphorus uptake and growth of white clover (Trifolium repens L.) growing in association with ryegrass (Lolium perenne L.). New Zealand Journal of Agricultural Research 38(3): 303-307. AgResearch, Ruakura Agric. Centre, Privte Bag 3123, Hamilton, New Zealand

Pinto, M., M. Rodriguez, et al. (1995). Effects of Linz-Donawitz (LD) slag on soil properties and pasture production in the Basque country (northern Spain). New Zealand Journal of Agricultural Research 38(1): 143-155. {a} Servicio de Investigacion y Mejora Agraria, Gobierno Vasco. B Artegan n 26, 48016 Derio, Bizkaia, Spain

Dodd, M. B. and S. J. Orr (1995). Seasonal growth, phosphate response, and drought tolerance of 11 perennial legume species grown in a hill country soil. New Zealand Journal of Agricultural Research 38(1): 7-20. AgResearch Whatawhata Res. Centre, Private Bag 3089, Hamilton, New Zealand

Budhianto, B., J. G. Hampton, et al. (1995). Effect of time of harvest and paclobutrazol on seed yield in white clover cv. Grasslands Pitau. New Zealand Journal of Agricultural Research 38(1): 1-6. {a} Seed Technol. Cent., Dep. Plant Sci., Massey Univ., Palmerston North, New Zealand

Bullitta, S., G. M. Scarpa, et al. (1995). Unreduced gametes in ball clover and its relevance in white clover breeding. Journal of Genetics and Breeding 49(2): 157-161. {a} Centro Studio Sul Miglioramento Produuttivita Pascoli, C.N.R., Sassari, Italy

Ibekwe, A. M., J. S. Angle, et al. (1995). Sewage sludge and heavy metal effects on nodulation and nitrogen fixation of legumes. Journal of Environmental Quality 24(6): 1199-1204. {a} Dep. Agronomy, Univ. Maryland, College Park, MD 20742, USA

Martens, H., H. B. Jakobsen, et al. (1995). Development of the strophiole in seeds of white clover (Trifolium repens L.). Seed Science Research 5(3): 171-176. {a} Dep. Food Sci. and Technol., Danish Inst. Plant Soil Sci., Kirstinebjergvej 12, 5792 Aarslev, Denmark

Gonzalez, L., X. C. Souto, et al. (1995). Allelopathic effects of Acacia melanoxylon R.Br. phyllodes during their decomposition. Forest Ecology and Management 77(1-3): 53-63. {a} Dep. Recursos Naturais Medio Ambiente, Fac. Ciencias de Vigo, Univ. Vigo, Apdo. 874, 36200 Vigo, Spain

Ashmore, M. R. and N. Ainsworth (1995). The effects of ozone and cutting on the species composition of artificial grassland communities. Functional Ecology 9(5): 708-712. {a} Dep. Biol., Imperial Coll. Sci. Technol. Med., Silwood Park, Ascot, Berkshire SL5 7PY, UK

Penning, P. D., A. J. Parsons, et al. (1995). Intake and behaviour responses by sheep, in different physiological states, when grazing monocultures of grass or white clover. Applied Animal Behaviour Science 45(1-2): 63-78. {a} Inst. Grassland Environ. Res., North Wyke, Okehampton EX20 2SB, UK

Crutchfield, B. A. and D. A. Potter (1995). Feeding by Japanese beetle and southern masked chafer grubs on lawn weeds. Crop Science 35(6): 1681-1684. {a} Dep. Entomology, S-225 Agric. Sci. Build. N., Univ. Kentucky, Lexington, KY 40546-0091, USA

Swaebo, A. and L. M. Mortensen (1995). Growth and regrowth of Phleum pratense, Lolium perenne, Trifolium repens and Trifolium pratense at normal and elevated CO-2 concentration. Agriculture Ecosystems and Environment 55(1): 29-35. {a} Saerheim Res. Cent., 4062 Klepp Stasjon, Norway

Thies, J. A., A. D. Petersen, et al. (1995). Host suitability of forage grasses and legumes of root-lesion nematode Pratylenchus penetrans. Crop Science 35(6): 1647-1651. {a} USDA-ARS, U.S. Vegetable Lab., 2875 Savannah Highway, Charleston, SC 29414, USA

Greer, D. H., W. A. Laing, et al. (1995). Photosynthetic responses of thirteen pasture species to elevated CO-2 and temperature. Australian Journal of Plant Physiology 22(5): 713-722. {a} Horticultural Food Res. Inst., Private Bag 11030, Palmerston North, New Zealand

Rogers, M. E., C. L. Noble, et al. (1995). The effect of NaCl on the germination and early seedling growth of white clover (Trifolium repens L.) populations selected for high and low salinity tolerance. Seed Science and Technology 23(2): 277-287. {a} Inst. Sustainable Irrigated Agric., Private Bag, Ferguson Rd., Tatura, Vic. 3616, Australia

Wightman, P. S. (1995). Effects of slurry application on grass/clover swards. Soil Use and Management 11(3): 149-150. AGronomy Dep., SAC, 581 King St., Aberdeen AB9 1UD, UK

James, F., K. D. Nolte, et al. (1995). Purification and properties of S-adenosyl-L-methionine:L-methionine S-methyltransferase from Wollastonia biflora leaves. Journal of Biological Chemistry 270(38): 22344-22350. {a} Plant Mol. Cellular Biol. Program, 2143 Fifield Hall, Univ. Florida, Gainesville, FL 32611-0690, USA

Arzone, A., A. Alma, et al. (1995). MLO-infected weeds in the vineyards of North-western Italy. Journal of Phytopathology Berlin 143(5): 257-260. Dip. Entomol. e Zool. Applicate Ambiente Carlo Vidano, Univ. degli Studi Torino, Torino, Italy

Venditti, M. E. and G. R. Noel (1995). Comparative host suitability of selected crop species to Tylenchorhynchus zambiensis. Nematropica 25(1): 15-25. {a} Cent. Economic Entomol., Agric. Res. Serv., Crop Protection Research Unit, U.S. Dep. Agric., Urbana, IL 61801, USA

Danthanarayana, W., H. Gu, et al. (1995). Population growth potential of Epiphyas postvittana, the lightbrown apple moth (Lepidoptera: Tortricidae) in relation to diet, temperature and climate. Australian Journal of Zoology 43(4): 381-394. {a} Dep. Zool., Univ. New England, Armidale, NSW 2351, Australia

Taylor, N. L., S. A. Ghabrial, et al. (1995). Quantification of yield benefits from incorporation of virus-resistant white clover germ plasm into grass-legume systems. Plant Disease 79(10): 1057-1061. {a} Dep. Agronomy, Univ. Kentucky, Lexington, KY 40546, USA

Hay, F. S. and L. Regnault (1995). A technique for monoxenic culture of clover cyst nematode (Heterodera trifolii) on white clover (Trifolium repens). Australasian Plant Pathology 24(2): 88-89. AgRes. Grasslands Res. Cent., Private Bag 11008, Palmerston North, New Zealand

Manojlovic, B. and I. Sivcev (1995). The influence of the diet of Coeloides scolyticida Wesm (Hymenoptera:Braconidae) on the parasity of Big Elm Bark Beetles Scolytus scolytus (F.) (Coleoptera: Scolytidae). Zastita Bilja 46(2): 155-162. Inst. Plant Protection Environment, Belgrade, Yugoslavia

Murata, T., M. L. Nguyen, et al. (1995). The effects of long-term superphosphate application on soil organic matter content and composition from the intensively managed New Zealand pasture. European Journal of Soil Science 46(2): 257-264. {a} Dep. Soil Sci., Lincoln Univ., Canterbury, New Zealand

Ross, D. J., K. R. Tate, et al. (1995). Elevated CO-2 and temperature effects on soil carbon and nitrogen cycling in ryegrass/white clover turves of an Endoaquept soil. Plant and Soil 176(1): 37-49. {a} Landcare Res. New Zealand, Private Bag 11052, Palmerston North, New Zealand

Georgiew, N. (1994). N, P and K content in the phytomass of two herb associations with a dominance of Lolium perenne. Archivos de Zootecnia 43(162): 175-180. Inst. Bot., Bulgarian Acad. Sci., Sofia 1113, Bulgaria

Beattie, L. D. and R. G. Garrett (1995). Adventitious shoot production from immature embryos of white clover. Plant Cell Tissue and Organ Culture 42(1): 67-72. Plant Sciences Biotechnology, Dep. Agriculture, Victoria, LaTrobe Univ., Bundoora, VIC 3083, Australia

Gordon, A. J., B. J. Thomas, et al. (1995). The location of sucrose synthase in root nodules of white clover. New Phytologist 130(4): 523-530. Cell Biology Dep., Inst. of Grassland and Environment Res., Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

McKirdy, S. J. and R. A. C. Jones (1995). Occurrence of alfalfa mosaic and subterranean clover red leaf viruses in legume pastures in Western Australia. Australian Journal of Agricultural Research 46(4): 763-774. {a} Plant Industries Div., Dep. Agric., Baron-Hay Court, South Perth, WA 6151, Australia

Keys, R. N., S. E. Smith, et al. (1995). Microgametophytic plastid nucleoid content and reproductive and life history traits of tribe Trifolieae (Fabaceae). Plant Systematics and Evolution 196(1-2): 89-98. {a} Dep. Plant Sci., Univ. Ariz., Tucson, AZ 85721, USA

Cook, R., S. A. Tiller, et al. (1995). Isoflavonoid metabolism in resistant and susceptible cultivars of white clover infected with the stem nematode Ditylenchus dipsaci. Journal of Plant Physiology 146(3): 348-354. {a} Inst. Grassland Environ. Res., Aberystwyth, Dyfed SY23 3EB, UK

Hanley, M. E., M. Fenner, et al. (1995). An experimental field study of the effects of mollusc grazing on seedling recruitment and survival in grassland. Journal of Ecology 83(4): 621-627. {a} Dep. Biol., Univ. Southampton SO16 7PX, UK

Francis, G. S., R. J. Haynes, et al. (1995). The effects of a nitrification inhibitor on leaching losses and recovery of mineralized nitrogen by a wheat crop after ploughing-in temporary leguminous pastures. Fertilizer Research 41(1): 33-39. {a} New Zealand Inst. Crop Food Res. Limited, Private Bag 4704, Christchurch, New Zealand

Schenk, U., R. Manderscheid, et al. (1995). Effects of CO-2 enrichment and intraspecific competition on biomass partitioning, nitrogen content and microbial biomass carbon in soil of perennial ryegrass and white clover. Journal of Experimental Botany 46(289): 987-993. {a} Bundesforschungsanstalt Landwirtschaft, Inst. Produktions- und Oekotoxikologie, Bundesallee 50, D-38116 Braunschweig, Germany

Kang, J. H., G. E. Brink, et al. (1995). Seedling white clover response to defoliation. Crop Science 35(5): 1406-1410. {a} USDA-ARS, Forage Res. Unit, P.O. Box 5367, Mississippi State, MS 39762, USA

Pederson, G. A. and R. G. Pratt (1995). Differential summer survival of white clover stolons: Germplasm and fungicide effects. Crop Science 35(5): 1282-1287. {a} USDA-ARS, Crop Science Res. Lab., Forage Res. Unit. P.O. Box 5367, Mississippi State, MS 39762, USA

Wheeler, D. M. and M. B. Dodd (1995). Effect of aluminium on yield and plant chemical concentrations of some temperate legumes. Plant and Soil 173(1): 133-145. {a} New Zealand Pastoral Agriculture Res. Inst. Ltd., Ruakura Agricultural Research Centre, Private Bag 3123, Hamilton, New Zealand

Rapey, H., M. F. X. De, et al. Opening coniferous plantations to grazing: Grass production in cleared underbrush. Revue Forestiere Francaise Nancy 46(Spec. Issue): 19-29. {a} Div. Techniques Forestieres, CEMAGREF, Domaine de Laluas, F-63200 Riom, France

Welch, D. (1995). Trends in the botanical composition of set-aside fields in North-East Scotland uncultivated for five years. Botanical Journal of Scotland 47(2): 141-150. Inst. Terrestrial Ecol., Banchory Res. Station, Hill Brathens, Glassel, Banchory, Kincardineshire AB31 4BY, UK

Mtengeti, E. J., D. Wilman, et al. (1995). Physical structure of white clover, rape, spurrey and perennial ryegrass in relation to rate of intake by sheep, chewing activity and particle breakdown. Journal of Agricultural Science 125(1): 43-50. {a} Dep. Agric. Sci., Univ. Wales, Aberystwyth, Dyfed SY23 3DD, UK

Piano, E. and P. Annicchiarico (1995). Interference effects in grass varieties grown as pure stand, complex mixture and binary mixture with white clover. Journal of Agronomy and Crop Science 174(5): 301-308. Ist. Sperimentale per le Colture Foraggere, 29 Viale Piacenza, I-20075 Lodi, Italy

Soussana, J. F., F. Vertes, et al. (1995). The regulation of clover shoot growing points density and morphology during short-term clover decline in mixed swards. European Journal of Agronomy 4(2): 205-215. {a} Fonctionnement et Gestion de l'Ecosysteme Prairial, INRA-Agronomie, 12 Av. du Brezet, 63039 Clermont-Ferrand Cedex 02, France

Nussbaum, S., M. Geissmann, et al. (1995). Ozone exposure-response relationships for mixtures of perennial ryegrass and white clover depend on ozone exposure patterns. Atmospheric Environment 29(9): 989-995. {a} Swiss Fed. Res. Stn. Agric. Chem. and Environ. Hygiene, CH-3097 Liebefeld-Bern, Switzerland

Diaz, C. L., H. P. Spaink, et al. (1995). Genomic requirements of Rhizobium for nodulation of white clover hairy roots transformed with the pea lectin gene. Molecular Plant Microbe Interactions 8(3): 348-356. {a} Cent. Phytotechnol. RUL/TNO, Leiden Univ., Wassenaaresweg 64, 2333 AL Leiden, Netherlands

Soussana, J. F. and M. C. Arregui (1995). Effect of mixed cropping on the nitrogen nutrition and growth of perennial ryegrass and white clover. Agronomie Paris 15(2): 81-96. {a} INRA, Stn. d'Agronomie, 12, Ave. Brezet, F-63039 Clermont Ferrand Cedex 02, France

Eisinger, S. M. and N. R. Paim (1994). Evaluation of clones of white clover under different levels of limestone and phosphorus in the soil: I. Rate of growth and production of forage. Revista da Sociedade Brasileira de Zootecnia 23(3): 383-393.

Wheeler, D. M. and D. C. Edmeades (1995). Effect of depth and lime or phosphorus fertilizer applications on the soil solution chemistry of some New Zealand pastoral soils. Australian Journal of Soil Research 33(3): 461-476. Ruakura Res. Centre, New Zealand Pastoral Agriculture Res. Inst., Private Bag 3123, Hamilton, New Zealand

Ribeiro, L. A. O., N. J. A. S. Pires, et al. (1995). Chronic copper poisoning in sheep grazed in an apple orchard. Pesquisa Veterinaria Brasileira 15(1): 15-17. {a} Inst. Pesquisas Vet. Desiderio Finamor, Caixa Postal 2076, Porto Alegre, RS 90001-970, Brazil

Grieu, P., C. Robin, et al. (1995). Effect of drought on photosynthesis in Trifolium repens: Maintenance of photosystem II efficiency and of measured photosynthesis. Plant Physiology and Biochemistry Montrouge 33(1): 19-24. {a} Lab. Agron. Environ., INRA-ENSAIA, BP 172, F-54505 Vandoeuvre-les-Nancy Cedex, France

Fisher, A. and D. Wilman (1995). Effect of interval between harvests and spring-applied fertilizer N on the growth of white clover in a mixed sward. Grass and Forage Science 50(2): 162-171. {a} Dep. Agric. Sci., Univ. Wales, Aberystwyth, Dyfed SY23 3DD, UK

Pasumarty, S. V., S. Higuchi, et al. (1995). Seed production in white clover (Trifolium repens L.): II. Effect of autumn defoliation on potential seed yield and seed yield components. Grass and Forage Science 50(2): 147-154. {a} Tohoku Natl. Agric. Exp. Stn., Shimo-Kuriyagawa, Morioka, Iwate 020-01, Japan

Barthram, G. T. and S. A. Grant (1995). Interactions between variety and the timing of conservation cuts on species balance in Lolium perenne-Trifolium repens swards. Grass and Forage Science 50(2): 98-105. {a} MLURI, Hartwood Res. Stn., Shotts, Lanarkshire ML7 4JY, UK

Pasumarty, S. V., S. Higuchi, et al. (1995). Influence of seed quality on seedling growth of white clover (Trifolium repens L.). Grass and Forage Science 50(2): 93-97. {a} Tohoku Natl. Agric. Exp. Stn., Shimo-Kuriyagawa, Morioka, Iwate 020-01, Japan

Pederson, G. A. (1995). Registration of MSRLM red leaf mark white clover germplasm. Crop Science 35(4): 1235-1236. USDA-ARS, Crop Sci. Res. Lab., Forage Res. Unit, P.O. Box 5367, Mississippi State, MS 38762-5367, USA

Pederson, G. A. and G. L. Windham (1995). Registration of MSNR4 root-knot nematode resistant white clover germplasm. Crop Science 35(4): 1234-1235. {a} USDA-ARS, Crop Sci. Res. Lab., Forage Res. Unit, P.O. Box 5367, Mississippi State, MS 39762-5367, USA

Brink, G. E. (1995). White clover growth and morphology under contrasting cutting regimes. Crop Science 35(4): 1100-1103. USDA-ARS Forage Res. Unit, P.O. Box 5367, Mississippi State, MS 39762, USA

Care, D. A. (1995). The effect of aluminium concentration on root hairs in white clover (Trifolium repens L.). Plant and Soil 171(1): 159-162. New Zealand Pastoral Agric. Res. Inst. Ltd., Private Bag 3123, Hamilton, New Zealand

Bowen, P. and S. Freyman (1995). Ground Covers Affect Raspberry Yield, Photosynthesis, and Nitrogen Nutrition of Primocanes. Hortscience 30(2): 238-241. Pacific Agric. Res. Cent., Box 1000, Agassiz, BC V0M 1A0, Canada

Cain, M. L., S. W. Pacala, et al. (1995). Neighborhood models of clonal growth in the white clover Trifolium repens. American Naturalist 145(6): 888-917. {a} Biology Department, New Mexico State Univ., Las Cruces, NM 88003, USA

Meredith, M. R., Y. T. P. T. Michaelson, et al. (1995). Trifolium ambiguum as a source of variation in the breeding of white clover. Euphytica 82(2): 185-191. Inst. Grassland Environ. Res., Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Yang, X., V. C. Baligar, et al. (1995). Influx, transport, and accumulation of cadmium in plant species grown at different Cd-2+ activities. Journal of Environmental Science and Health Part B Pesticides Food Contaminants and Agricultural Wastes 30(4): 569-583. {a} USDA-ARS, Beckley, WV 25802-0867, USA

Denison, R. F. and T. B. Kinraide (1995). Oxygen-induced membrane depolarizations in legume root nodules. Possible evidence for an osmoelectrical mechanism controlling gas permeability. Plant Physiology Rockville 108(1): 235-240. {a} Dep. Agronomy, Range Sci., University California, Davis, CA 95616, USA

Ashenden, T. W., S. A. Bell, et al. (1995). Responses of white clover to gaseous pollutants and acid mist: Implications for setting critical levels and loads. New Phytologist 130(1): 89-96. Inst. Terrestrial Ecol., Bangor Res. Unit, Univ. Wales, Deiniol Road, Bangor, Gwynedd LL57 2UP, UK

Wang, W., D. L. Vincent, et al. (1994). The quantification of phytoestrogens in fresh plant materials by reversed-phase high-performance liquid chromatography. Acta Botanica Yunnanica 16(4): 424-430. {a} Dep. Prev. Control., Cancer Res. Cent. Hawaii, 1236 Lauhala St., Honolulu, HI 96813, USA

Firth, D. J. and G. P. M. Wilson (1995). Preliminary evaluation of species for use as permanent ground cover in orchards on the north coast of New South Wales. Tropical Grasslands 29(1): 18-27. {a} P.O. Box 72, Alstonville, NSW 2477, Australia

Cain, M. L., B. Kahn, et al. (1995). Genetic variability and tradeoffs among reproductive traits in white clover (Trifolium repens). Canadian Journal of Botany 73(3): 505-511. {a} Dep. Biol., New Mexico State Univ., Las Cruces, NM 88003, USA

McMullen, J. A. and P. MacPherson (1995). Yellow bartsia in the Glasgow area. Glasgow Naturalist 22(5): 526-527.

Gangbazo, G., A. R. Pesant, et al. (1995). Water Contamination by Ammonium Nitrogen Following the Spreading of Hog Manure and Mineral Fertilizers. Journal of Environmental Quality 24(3): 420-425. {a} Research Station, Agriculture Canada, Lennoxville, PQ J1M 1Z3, Canada

Peicea, I. and C. Arion (1993). The influence of copper, manganese, nickel and cobalt on the germination and development "in vitro" of some plant seeds. Studii si Cercetari de Biologie Seria Biologie Vegetala 45(1): 85-90. Inst. Stiinte Biol., Splaiul Independentei nr. 296, Bucuresti, Romania

Laverack, G. K. and M. T. Turner (1995). Roguing seed crops for genetic purity: A review. Plant Varieties and Seeds 8(1): 29-45. Univ. Edinburgh, Inst. Ecol. and Resource Management, Sch. Agric. Build., West Mains Road, Edinburgh EH9 3JG, UK

Kostyukovsky, V., T. Inamoto, et al. (1995). Degradation of hay by rumen fungi in artificial rumen (RUSITEC). Journal of General and Applied Microbiology 41(1): 83-86. {a} Dep. Animal Microbiol. Parasitol., Tohoku Univ., 1-1 Tsutsumi-dori Amamiya-cho, Aoba-ku, Sendai 981, Japan

Gillespie, A. R., B. K. Miller, et al. (1995). Effects of ground cover on tree survival and growth in filter strips of the Cornbelt Region of the midwestern US. Agriculture Ecosystems and Environment 53(3): 263-270. {a} Dep. Forestery Nat. Resour., Purdue University, West Lafayette, IN 47907-1159, USA

Kanneganti, V. R. and S. R. Kaffka (1995). Forage availability from a temperate pasture managed with intensive rotational grazing. Grass and Forage Science 50(1): 55-62. {a} U.S. Dairy Forage Res. Cent., 1925 Linden Dr. W., Madison, WI 53706, USA

Hill, M. J., M. J. Hockney, et al. (1995). The effect of hydrogen cyanide potential (HCNp) and sward morphology on the relative acceptability to sheep of white clover and Caucasian clover herbage. Grass and Forage Science 50(1): 1-9. {a} CSIRO, Div. Animal Production, Pastoral Res. Lab., Private Mail Bag, P.O. Armidale, NSW 2350, Australia

Hopkins, A. and J. Gilbey (1995). An evaluation of the performance of two white clover varieties and a resident white clover on an acid, permanent grassland clay soil. Plant Varieties and Seeds 8(1): 65-72. {a} Inst. Grassland and Environ. Res., North Wyke, Okehampton, Devon EX20 2SB, UK

Sawada, H. and A. Nishiwaki (1995). Pollinator behavior in white clover (Trifolium repens L.) patches and its consequences to seed set in a Zoysia-type sward. Nippon Sochi Gakkai Shi 40(4): 448-456. {a} Fac. Agric., Shizuoka Univ., Ooya-836, Shizuoka 422, Japan

Morita, O., K. Iwabuchi, et al. (1995). Taproot tip penetration and young seeding growth in relation to root-hair adhesion among surface-sown legume species. Nippon Sochi Gakkai Shi 40(4): 437-442. Fac. Bioresources, Mie Univ., Tsu, Mie 514, Japan

Morita, O., K. Iwabuchi, et al. (1995). Effect of adhesion of taproot hairs to soil surface on germinating behaviors in surface-Sown legume species. Nippon Sochi Gakkai Shi 40(4): 429-436. Fac. Bioresources, Mie Univ., Tsu, Mie 514, Japan

Kawabe, Y. E. (1995). Pasture improvement by introducing temperate grasses into native grassland under the sub-tropical low rainfall climatic conditions of North-Western New South Wales. Nippon Sochi Gakkai Shi 40(4): 351-361. PO Box W358, Tamworth NSW, Australia

Belli, M., U. Sansone, et al. (1995). The effect of fertilizer applications on 137Cs uptake by different plant species and vegetation types. Journal of Environmental Radioactivity 27(1): 75-89. {a} ANPA-DISP, Via V. Brancati 48, 00144 Roma, Italy

Vipond, J. E., S. Marie, et al. (1995). Effects of clover and milk in the diet of grazed lambs on meat quality. Animal Science Pencaitland 60(2): 231-238. {a} Genetics Behavioural Sciences Dep., SAC Edinburgh, West Mains Road, Edinburgh EH9 3JG, UK

Dufrasne, I., M. Gielen, et al. (1995). Effects of a grazing period on performance of finishing bulls: Comparison with an indoor finishing system. Animal Science Pencaitland 60(1): 75-80. {a} Univ. Liege, Faculte Med. Veterinaire-B43, Serv. Nutrition, Sart-Tilman, 4000 Liege, Belgium

Kemball, W. D. and C. Marshall (1995). Clonal integration between parent and branch stolons in white clover: A developmental study. New Phytologist 129(3): 513-521. {a} Sch. Biol. Sci., Univ. Wales, Bangor, Gwynedd LL57 2UW, UK

Berbara, R. L. L., B. M. Morris, et al. (1995). Electrical currents associated with arbuscular mycorrhizal interactions. New Phytologist 129(3): 433-438. {a} Dep. Mol. Cell Biol., Marischal Coll., Univ. Aberdeen, Aberdeen AB9 1AS, UK

Venuto, B. C., R. R. Smith, et al. (1995). Virulence, legume host specificity, and genetic relatedness of isolates of Fusarium oxysporum from red clover. Plant Disease 79(4): 406-410. {a} La. State Univ. Agric. Cent., Dep. Agron., Baton Rouge, LA 70803-7511, USA

Wheeler, D. M. (1995). Effect of root hair length on aluminium tolerance in white clover. Journal of Plant Nutrition 18(5): 955-958. Ruakura Agric. Res. Cent., New Zealand Pastoral Agric. Res. Inst. Ltd., Private Bag 3123, Hamilton, New Zealand

Wheeler, D. M. (1995). Differences in aluminium tolerance of ryegrass and white clover plants grown from seed or propagated vegetatively. Journal of Plant Nutrition 18(5): 949-954. Ruakura Agric. Cent., New Zeal. Agric. Pastoral Res. Inst. Ltd., Private Bag 3123, Hamilton, New Zealand

Springer, T. L. (1995). Seeding clovers into bermudagrass sod in the hill-lands of the western mid-south. Arkansas Agricultural Experiment Station Research Series(442): 33-37. USDA ARS, Arkansas Agric. Exp. Stn., Fayetteville, AR 72701, USA

Mateos, P. F., D. L. Baker, et al. (1995). Direct in situ identification of cellulose microfibrils associated with Rhizobium leguminosarum biovar trifolii attached to the root epidermis of white clover. Canadian Journal of Microbiology 41(2): 202-207. {a} Dep. Microbiol. Cent. Microbiol. Ecology, Michigan State Univ., East Lansing, MI 48824, USA

Byers, R. A. (1995). Factors affecting rearing of clover root curculio (Coleoptera: Curculionidae) in cone containers. Journal of Economic Entomology 88(2): 407-414. Pasture Syst. Watershed Management Res. Unit., US Regional Pasture Res. Lab., USDA ARS, University Park, PA 16802, USA

Teuber, N. and A. S. Laidlaw (1995). Effect of herbage injection by steers on white clover (Trifolium repens) branching and development in continuously stocked grass-clover swards. Journal of Agricultural Science 124(2): 205-212. {a} Dep. Appl. Plant Sci., Queen's Univ. Belfast, Newforge Lane, Belfast BT9 5PX, UK

Goodman, R. D. and A. E. Williams (1994). Honeybee pollination of white clover (Trifolium repens L.) cv. Haifa. Australian Journal of Experimental Agriculture 34(8): 1121-1123. {a} Dep. Agric., Inst. Hortic. Develop., Private Bag 15, South Eastern Mail Cent., VIC 3176, Australia

Pederson, G. A. and M. R. McLaughlin (1995). Registration of MSRedFl red-flowered white clover germplasm. Crop Science 35(2): 596. {a} USDA-ARS, Crop Sci. Res. Lab., Forage Res. Unit, P.O. Box 5367, Mississippi State, MS 39762-5367, USA

Verch, G. and W. Kuehbauch (1994). Changes in species composition and forage quality of wetlands by extensive management. Wirtschaftseigene Futter 40(2-3): 242-251. Lehrstuhl Allgemeinen Pflanzenbau Rheinischen, Friedrich-Wilhelms-Univ., Katzenburgweg 5, D-53115 Bonn, Germany

Suedekum, K. H., F. Taube, et al. (1994). Slot-seeding of white clover into a permanent pasture: Impact on nutritive value estimated in vivo and in vitro. Wirtschaftseigene Futter 40(2-3): 129-141. {a} Inst. Tierernaehrung Stoffwechselphysiologie, Christian-Albrechts-Universitaet, D-24098 Kiel, Germany

Pugh, R., J. F. Witty, et al. (1995). The effect of waterlogging on nitrogen fixation and nodule morphology in soil-grown white clover (Trifolium repens L.). Journal of Experimental Botany 46(284): 285-290. {a} Dep. Environ. Biol., Inst. Grassland Environ. Res., Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Springer, T. L. (1995). Vulnerability of pasture and range legumes to fungus gnats. Crop Science 35(2): 534-536. {a} USDA-ARS, South Central Family Res. Cent., 6883 South State Highway 23, Booneville, AR 72927-9214, USA

Clark, H., P. C. D. Newton, et al. (1995). The influence of elevated CO-2 and simulated seasonal changes in temperature on tissue turnover in pasture turves dominated by perennial ryegrass (Lolium perenne) and white clover (Trifolium repens). Journal of Applied Ecology 32(1): 128-136. AgRes. Grasslands, Grasslands Res. Cent., Fitzherbert West, Private Bag 11008, Palmerston North, New Zealand

Saloniemi, H., K. Wahala, et al. (1995). Phytoestrogen content and estrogenic effect of legume fodder. Proceedings of the Society for Experimental Biology and Medicine 208(1): 13-17. {a} Coll. Veterinary Med., Dep. Basic Veterinary Med., Section Animal Hygiene, Box 6, FIN-00581 Helsinki, Finland

Hojito, M. (1994). Studies on grassland acidification caused by fertilizer application and its effects on grass growth. Report of Hokkaido Prefectural Agricultural Experiment Stations(83): 1-108. Hokkaido Konsen Agricultural, Experiment Station, Nakashibetu, Hokkaido 086-11, Japan

Marshall, A. H., Y. T. P. T. Michaelson, et al. (1995). Reproductive characters of interspecific hybrids between Trifolium repens L. and T. nigrescens Viv. Heredity 74(2): 136-145. {a} Inst. Grassland Environmental Res., Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Wilbourn, S., A. W. Davison, et al. (1995). The use of an unenclosed field fumigation system to determine the effects of elevated ozone on a grass-clover mixture. New Phytologist 129(1): 23-32. Dep. Agric. Environ. Sci., Ridley Building, Univ. Newcastle upon Tyne, Newcastle upon Tyne NE1 7RU, UK

Karlsson, G. P., G. Sellden, et al. (1995). Clover as an indicator plant for phytotoxic ozone concentrations: Visible injury in relation to species, leaf age and exposure dynamics. New Phytologist 129(2): 355-365. {a} Swedish Environ. Res. Inst., Box 47086, S-402 58 Goteborg, Sweden

Ommen, O. E., J. Bender, et al. (1994). Effects of Ozone on White Clover: Protection of Ozone Damage by Ethylenediurea. Angewandte Botanik 68(5-6): 146-150. Inst. Produktions- Oekotoxikol., Bundesforschungsanstalt Landwirtschaft, Bundesallee 50, D-38116 Braunschweig, Germany

Valencia, B. R. M., B. M. A. Fombella, et al. (1994). Pollen spectra of honey from different phytogeographical regions of the Leon Province, NW Spain. Grana 33(4-5): 268-275. {a} Dep. de Biologia Vegetal, Universidad de Leon, E-24071 Leon, Spain

Theunissen, J., C. J. H. Booij, et al. (1995). Effects of intercropping white cabbage with clovers on pest infestation and yield. Entomologia Experimentalis et Applicata 74(1): 7-16. {a} Res. Inst. Plant Prot., P.B. 9060, 6700 GW Wageningen, Netherlands

Newman, J. A., A. J. Parsons, et al. (1994). A note on the behavioural strategies used by grazing animals to alter their intake rates. Grass and Forage Science 49(4): 502-505. {a} Dep. Zool., Southern Illinois Univ., Carbondale, IL 62901-6501, USA

Steg, A., S. W. M. Van, et al. (1994). Rumen degradation and intestinal digestion of grass and clover at two maturity levels during the season in dairy cows. Grass and Forage Science 49(4): 378-390. {a} Inst. Animal Sci. Health, P.O. Box 160, 8200 AD Lelystad, Netherlands

Yarrow, N. H. and P. D. Penning (1994). Managing grass/clover swards to produce differing clover proportions. Grass and Forage Science 49(4): 496-501. {a} AFRC Inst. Grassland Environmental Res., North Wyke Res. Stn., Okehampton, Devon EX20 2SB, UK

Barthram, G. T. and S. A. Grant (1994). Seasonal variation in growth characteristics of Lolium perenne and Trifolium repens in swards under different managements. Grass and Forage Science 49(4): 487-495. {a} MLURI, Hartwood Res. Stn., Shotts, Lanarkshire ML7 4JY, UK

Chapman, R., A. Younger, et al. (1994). The influence of soil factors on the growth of a grass/clover sward on a restored opencast site in Northumberland, UK. Grass and Forage Science 49(4): 447-457. {a} Dep. Agric., Univ. Newcastle upon Tyne, Newcastle upon Tyne NE1 7RU, UK

Wilman, D., P. G. H. Acuna, et al. (1994). Concentrations of N, P, K, Ca, Mg and Na in perennial ryegrass and white clover leaves of different ages. Grass and Forage Science 49(4): 422-428. {a} Dep. Agric. Sci., Univ. College Wales, Aberystwyth, Dyfed SY23 3DD, UK

Rogers, M. E., C. L. Noble, et al. (1994). Leaf, stolon and root growth of white clover (Trifolium repens L.) in response to irrigation with saline water. Irrigation Science 15(4): 183-194. {a} Inst. Sustainable Irrig. Agric., Dep. Agric., Ferguson Rd., Tatura, Victoria 3616, Australia

Paine, L., H. Harrison, et al. (1995). Establishment of asparagus with living Mulch. Journal of Production Agriculture 8(1): 35-40. {a} Dep. Agron., 1575 Linden Dr., Univ. Wisconsin, Madison, WI 53706, USA

Costello, M. J. and M. A. Altieri (1995). Abundance, growth rate and parasitism of Brevicoryne brassicae and Myzus persicae (Homoptera: Aphididae) on broccoli grown in living mulches. Agriculture Ecosystems and Environment 52(2-3): 187-196. {a} Lab. Biological Control, UC Berkeley, Kearney Agricultural Cent., 9240 S. Riverbend Ave., Parlier, CA 93648, USA

Fujimaki, Y. and M. Watanabe (1993). Preference to Herb in captive hazel grouses. Japanese Journal of Ornithology 41(3-4): 59-63. Lab. Wildlife Ecology, Obihiro Univ. Agriculture Veterinary Med., Inada, Obihiro 080, Japan

Beecher, H. G., J. A. Thompson, et al. (1994). Effect of cropping sequences on soil nitrogen levels, rice growth, and grain yields. Australian Journal of Experimental Agriculture 34(7): 977-986. NSW Agric., Yanco Agric. Inst., Yanco, NSW 2703, Australia

Breland, T. A. (1994). Measured and predicted mineralization of clover green manure at low temperatures at different depths in two soils. Plant and Soil 166(1): 13-20. Agric. Univ. Norway, Dep. Biotechnol. Sci., P.O. Box 5040, N-1432 As, Norway

Breland, T. A. (1994). Enhanced mineralization and denitrification as a result of heterogeneous distribution of clover residues in soil. Plant and Soil 166(1): 1-12. Agric. Univ. Norway, Dep. Biotechnol. Sci., P.O. Box 5040, N-1432 As, Norway

Hogh, J. H. and J. K. Schjoerring (1994). Measurement of biological dinitrogen fixation in grassland: Comparison of the enriched 15N dilution and the natural 15N abundance methods at different nitrogen application rates and defoliation frequencies. Plant and Soil 166(2): 153-163. Plant Nutr. Lab., Dep. Agric Sci., Royal Vet. Agric. Univ., Thorvaldsensvej 40, DK-1871 Copenhagen, Denmark

Hatch, D. J. and P. J. Murray (1994). Transfer of nitrogen from damaged roots of white clover (Trifolium repens L.) to closely associated roots of intact perennial ryegrass (Lolium perenne L). Plant and Soil 166(2): 181-185. Inst. Grassland Environ. Res., North Wyke Res. Stn., Okehampton, Devon EX20 2SB, UK

Murphy, S. D. and L. W. Aarssen (1995). In vitro allelopathic effects of pollen from three Hieracium species (Asteraceae) and pollen transfer to sympatric Fabaceae. American Journal of Botany 82(1): 37-45. {a} Dep. Biol., Queen's Univ., Kingston, ON K7L 3N6, Canada

Robin, C., M. J. M. Hay, et al. (1994). Effect of light quality (red: far-red ratio) and defoliation treatments applied at a single phytomer on axillary bud outgrowth in Trifolium repens L. Oecologia Berlin 100(3): 236-242. {a} Institut National de la Recherche Agronomique-Ecole Nationale Superieure d'Agronomie, BP 172, F-54505 Vandoeuvre-Ies-Nancy Cedex, France

Sarathchandra, S. U., M. M. E. Di, et al. (1995). Effects of Plant-Parasitic nematodes and rhizosphere microorganisms on the growth of white clover (Trifolium repens L.) and perennial ryegrass (Lolium perenne L.). Soil Biology and Biochemistry 27(1): 9-16. AgRes., Ruakura Agric. Res. Cent., Private Bag 3123, Hamilton, New Zealand

Damsteegt, V. D., A. L. Stone, et al. (1995). Soybean Dwarf, Bean Leaf Roll, and Beet Western Yellows Luteoviruses in Southeastern U.S. White Clover. Plant Disease 79(1): 48-50. {a} Res. Plant Pathol., Crop Protection Res. Unit, Dep. Plant Pathol., Univ. Illinois, Urbana, IL 61801, USA

Halsall, D. M., J. H. Leigh, et al. (1995). The role of allelopathy in legume decline in pastures. II. Comparative effects of pasture, crop and weed residues on germination, nodulation and root growth. Australian Journal of Agricultural Research 46(1): 189-207. Div. Plant Ind., CSIRO, GPO Box 1600, Canberra, ACT 2600, Australia

Deaker, J. M., M. J. Young, et al. (1994). Carcass, liver and kidney characteristics of lambs grazing plantain (Plantago lanceolata), chicory (Cichorium intybus), white clover (Trifolium repens) or perennial ryegrass (Lolium perenne). Proceedings of the New Zealand Society of Animal Production 54: 197-200. {a} AgRes., Canterbury Agric. Sci. Cent., Lincoln, Canterbury, New Zealand

Kuehbauch, W., G. Verch, et al. (1994). Changes of botanical composition of intensively used grassland during a process of deintensification. Wirtschaftseigene Futter 40(1): 101-110. {a} Lehrstuhl Allgemeinen Pflanzenbau, Rheinische Friedrich-Wilhelms-Univ., Katzenburgweg 5, 53115 Bonn, Germany

Williams, B. L. and I. G. Pascoe (1994). Phytophthora megasperma, a pathogen of Trifolium repens in irrigated pastures of northern Victoria. Australasian Plant Pathology 23(3): 88-96. {a} C/O Ardmona PO Ardmona, VIC 3629, Australia

Opitz, V. B. W. J. J. (1994). Effects of rotational fallows ('set-aside land') on subsequent winter wheat. Journal of Agronomy and Crop Science 173(2): 125-134. Ludwigstrasse 23, D-35390 Giessen, Germany

Kang, J. H. and G. E. Brink (1995). White clover morphology and physiology in response to defoliation interval. Crop Science 35(1): 264-269. {a} USDA-ARS, Forage Research Unit, P.O. Box 5367, Mississippi State, MS 39762, USA

Ferm, A., J. Hytonen, et al. (1994). Effects of weed control on the early growth of Betula pendula seedlings established on an agricultural field. Scandinavian Journal of Forest Research 9(4): 347-359. {a} Forest Res. Inst., Kannus Res. Stn., P.O. Box 44, FIN-69101 Kannus, Finland

Ealing, P. M., K. R. Hancock, et al. (1994). Expression of the pea albumin 1 gene in transgenic white clover and tobacco. Transgenic Research 3(6): 344-354. {a} CSIRO Div. Tropical Crops Pastures, Cunningham Lab., St. Lucia 4067, Australia

Fabiano, E., G. Gualtieri, et al. (1994). Extent of high-affinity iron transport systems in field isolates of rhizobia. Plant and Soil 164(2): 177-185. {a} Biochem. Dep. I.I.B.C.E., 3318 Italia Ave., 11600 Montevideo, Uruguay

Dunn, G. M., K. F. Lowe, et al. (1994). Early tree and pasture growth in an agroforestry system evaluating Albizia lebbeck, Casuarina cunninghamiana and Eucalyptus maculata in south-east Queensland. Tropical Grasslands 28(3): 170-181. {a} Queensland Forest Research Inst., MS 483, Fraser Road, Glympie, QLD 4570, Australia

Michalk, D. L., W. J. Ryan, et al. (1994). Grassland improvement in subtropical Guangdong Province, China. 4. Development of a whole-farm grazing system. Tropical Grasslands 28(3): 155-163. {a} Agric. Research Vet. Centre, Forest Road, Orange, NSW 2800, Australia

Matthew, C., C. R. O. Lawoko, et al. (1994). Application of canonical discriminant analysis, principal component analysis, and canonical correlation analysis as tools for evaluating differences in pasture botanical composition. New Zealand Journal of Agricultural Research 37(4): 509-520. {a} Dep. Plant Sci., Massey University, Private Bag 11-222, Palmerston North, New Zealand

Hickey, M. J. and D. E. Hume (1994). Evaluation of seven Italian and hybrid ryegrasses under sheep grazing in Southland, New Zealand. New Zealand Journal of Agricultural Research 37(4): 495-508. AgResearch Grasslands, Private Bag 11008, Palmerston North, New Zealand

Harris, S. L. (1994). White clover growth and morphology in dairy pasture in the Waikato region of northern New Zealand. New Zealand Journal of Agricultural Research 37(4): 487-494. Dairying Res. Corporation, Private Bag 3123, Hamilton, New Zealand

Hartwig, U. A., I. Heim, et al. (1994). The nitrogen-sink is involved in the regulation of nitrogenase activity in white clover after defoliation. Physiologia Plantarum 92(3): 375-382. {a} Inst. Plant Sci., Swiss Fed. Inst. Technol., Univ. 2, CH-8092 Zurich, Switzerland

Jakobsen, H. B. and H. Martens (1994). Influence of temperature and ageing of ovules and pollen on reproductive success in Trifolium repens L. Annals of Botany London 74(5): 493-501. {a} Dep. Food Sci. Technol., Res. Cent. Aarslev, Kirstinebjergvej 12, DK-5792 Aarslev, Denmark

Nebel, B. and J. Fuhrer (1994). Inter-and intraspecific differences in ozone sensitivity in semi-natural plant communities. Angewandte Botanik 68(3-4): 116-121. Forschungsanstalt Agrikulturchemie Umwelthygiene, Schwarzenburgstrasse 155, CH-3097 Liebefeld-Bern, Switzerland

Dernoeden, P. H., M. J. Carroll, et al. (1994). Mowing of three fescue species for low-maintenance turf sites. Crop Science 34(6): 1645-1649. {a} Dep. Agron., Univ. Md., College Park, MD 20742, USA

Fenton, M. and B. D. W. Jarvis (1994). Expression of the symbiotic plasmid from Rhizobium leguminosarium biovar trifolii in Sphingobacterium multivorum. Canadian Journal of Microbiology 40(10): 873-879. {a} Dep. Microbiol. Genetics, Massey Univ., Private Bag, Palmerston North, New Zealand

Caradus, J. R. (1994). Selection for improved adaptation of white clover to low phosphorus and acid soils. Euphytica 77(3): 243-250. AgRes. Grasslands, Private Bag 11008, Palmerston North, New Zealand

Brink, G. E. and T. E. Fairbrother (1994). Cell wall composition of diverse clovers during primary spring growth. Crop Science 34(6): 1666-1671. {a} USDA-ARS, Crop Sci. Res. Lab., Forage Res. Unit, P.O. Box 5367, Mississippi State, MS 39762, USA

Heagle, A. S., R. L. Brandenburg, et al. (1994). Ozone and carbon dioxide effects on spider mites in white clover and peanut. Journal of Environmental Quality 23(6): 1168-1176. {a} USDA-ARS, Plant Pathol. Dep., North Carolina Univ., Raleigh, NC 27695, USA

Murray, P. J. and D. J. Hatch (1994). Sitona weevils (Coleoptera: Curculionidae) as agents for rapid transfer of nitrogen from white clover (Trifolium repens L.) to perennial ryegrass (Lolium perenne L.). Annals of Applied Biology 125(1): 29-33. Inst. Grassland and Environ. Res., North Wyke Res. Station, Okehampton, Devon EX20 2SB, UK

Barthram, G. T. and S. A. Grant (1994). The effects of management and plant variety on the composition, vertical structure and stock-carrying capacity of Lolium perenne/Trifolium repens pastures. Grass and Forage Science 49(3): 360-368. {a} MLURI, Hartwood Res. Stn., Shotts, Lanarkshire ML7 4JY, UK

Newton, P. C. D. and M. J. M. Hay (1994). Patterns of nodal rooting in Trifolium repens (L.) and correlations with stages in the development of axillary buds. Grass and Forage Science 49(3): 270-276. {a} AgResearch Grasslands, Private Bag 11008, Palmerston North, New Zealand

Lefroy, R. D. B., M. Dana, et al. (1994). A glasshouse evaluation of sulfur fertilizer sources for crops and pastures. III. Soluble and non-soluble sulfur and phosphorus sources for pastures. Australian Journal of Agricultural Research 45(7): 1525-1537. {a} Dep. Agron. Soil Sci., Univ. New England, Armidale, NSW 2351, Australia

Blair, G. J., M. Dana, et al. (1994). A glasshouse evaluation of sulfur fertilizer sources for crops and pastures. II. A comparison of sulfur coated triple superphosphates and gypsum. Australian Journal of Agricultural Research 45(7): 1517-1523. {a} Dep. Agron. Soil Sci., Univ. New England, Armidale, NSW 2351, Australia

Sawada, H., S. Naghizadeh, et al. (1994). Inter-patch variation in seed-set and seed size of white clover (Trifolium repens L.) in a Trifolium repens-Zoysia japonica coexisting sward. Nippon Sochi Gakkai Shi 40(1): 85-94. {a} Fac. Agric., Shizuoka Univ., Ooya-836, Shizuoka 422, Japan

Horner, H. T., N. R. Lersten, et al. (1994). Quantitative survey of sieve tube distribution in foliar terminal veins of ten dicot species. American Journal of Botany 81(10): 1267-1274. {a} Dep. Bot. Bessey Microscopy Facil., Iowa State Univ., Ames, IA 50011-1020, USA

Jakobsen, H. B. and K. Kristjansson (1994). Influence of temperature and floret age on nectar secretion in Trifolium repens L. Annals of Botany London 74(4): 327-334. {a} Dep. Food Sci. Technol., Res. Cent. Aarslev, Kirstinebjergvej 12, DK-5792 Aarslev, Denmark

Jakobsen, H. B., H. Martens, et al. (1994). Accumulation of metabolites during seed development in Trifolium repens L. Annals of Botany London 74(4): 409-415. {a} Dep. Food Sci. Technol., Res. Cent. Aarslev, Kirstinebjergvej 12, DK-5792 Aarslev, Denmark

Skot, L., E. Timms, et al. (1994). The effect of toxin-producing Rhizobium strains, on larvae of Sitona flavescens feeding on legume roots and nodules. Plant and Soil 163(1): 141-150. AFRC Inst. Grassland Environmental Res., Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Rodriguez, M., F. A. Lope, et al. (1994). Basic Linz-Donawitz slag as a liming agent for pastureland. Agronomy Journal 86(5): 904-909. {a} Servicio de Investigacion y Mejora Agraria, Gobierno Vasco, 48016 Derio, Bizkaia, Spain

Wardle, D. A., K. S. Nicholson, et al. (1994). Interference effects of the invasive plant Carduus nutans L. against the nitrogen fixation ability of Trifolium repens L. Plant and Soil 163(2): 287-297. AgRes., Ruakura Agric. Cent., Private Bag 3123, Hamilton, New Zealand

Yeates, G. W., V. A. Orchard, et al. (1994). Impact of pasture contamination by copper, chromium, arsenic timber preservative on soil biological activity. Biology and Fertility of Soils 18(3): 200-208. {a} Landcare Research, Private Bag 11052, Palmerston North, New Zealand

Ostrowski, R. (1994). Studies of the persistence of white clover (Trifolium repens L.) in pasture swards carried out in Pawlowice in 1971-1993. Instytut Zootechniki Biuletyn Informacyjny 32(1): 29-38. Inst. Zootechniki, Zootechniczyn Zaklad Doswiadczalny, 640-122 Pawlowice, Poland

Stochmal, A. and W. Oleszek (1994). Determination of cyanogenic glucosides in white clover (Trifolium repens L.) by high performance liquid chromatography. Phytochemical Analysis 5(5): 271-272. {a} Dep. Biochem., Inst. Soil Sci. Plant Cultivation, Osada Palacowa, 24-100 Pulawy, Poland

Burton, R. O., Jr., P. T. Berends, et al. (1994). Economic analysis of grazing and subsequent feeding of steers from three fescue pasture alternatives. Journal of Production Agriculture 7(4): 482-489. {a} Dep. Agric. Economics, Kansas State Univ., Manhattan, KS 66506, USA

Reynolds, M. P., K. D. Sayre, et al. (1994). Intercropping wheat and barley with N-fixing legume species: A method for improving ground cover, N-use efficiency and productivity in low input systems. Journal of Agricultural Science 123(2): 175-183. {a} Wheat Program CIMMYT, Lisboa 27, Apdo. Postal 6-441, 06600 Mexico D.F., Mexico

Seresinhe, T., U. A. Hartwig, et al. (1994). Symbiotic nitrogen fixation of white clover in a mixed sward is not limited by height of repeated cutting. Journal of Agronomy and Crop Science 172(4): 279-288. {a} Fac. Agric., Univ. Ruhma, Kamburupitiya, Sri Lanka

Lattimore, M. A. E., H. G. Beecher, et al. (1994). Establishment and early growth after rice of subterranean clover (Trifolium subterraneum), Persian clover (T. resupinatum), balansa clover (T. michelianum), and white clover (T. repens). Australian Journal of Experimental Agriculture 34(4): 459-467. NSW Agric., Yanco Agric. Inst., PMB Yanco, NSW 2703, Australia

Fitzgerald, R. D. (1994). Evaluation of legumes for introduction into native grass pastures on the North-west Slopes of New South Wales. Australian Journal of Experimental Agriculture 34(4): 449-458. NSW Agric., Agric. Res. and Advisory Station, Glen Innes, NSW 2370, Australia

Fuhrer, J., M. H. Shariat, et al. (1994). Effects of ozone on managed pasture: II. Yield, species composition, canopy structure, and forage quality. Environmental Pollution 86(3): 307-314. Swiss Federal Res. Stn. Agric. Chem., Environmentl Hygiene, CH-3097 Liebefeld-Bern, Switzerland

Blauenfeldt, J., P. A. Joshi, et al. (1994). Nodulation of white clover (Trifolium repens) in the absence of Rhizobium. Protoplasma 179(3-4): 106-110. {a} Plant Mol. Genetics, University Tennessee, PO Box 1071, Knoxville, TN 37901-1071, USA

Standell, C. and R. O. Clements (1994). Influence of grass seed rate, herbicide (bentazone) molluscicide (methiocarb) and insecticide (triazophos) on white clover (Trifolium repens) establishment, herbage yield and sward botanical composition. Crop Protection 13(6): 429-432. {a} IGER, North Wyke Research Station, Okehampton, Devon EX20 SSB, UK

Turkington, R., E. Klein, et al. (1994). Conditioning effects by neighbors on the growth and form of Trifolium repens. Canadian Journal of Botany 72(6): 783-787. {a} Botany Dep., Univ. Britisch Columbia, Vancouver, BC V4K 1Z4, Canada

Tawaraya, K. and M. Saito (1994). Effect of vesicular-arbuscular mycorrhizal infection on amino acid composition in roots of onion and white clover. Soil Science and Plant Nutrition 40(2): 339-343. {a} Faculty Agriculture, Yamagata Univ., Tsuruoka 997, Japan

Robin, C., M. J. M. Hay, et al. (1994). Effect of light quality (red:Far-red ratio) at the apical bud of the main stolon on morphogenesis of Trifolium repens L. Annals of Botany London 74(2): 119-123. {a} AgRes. Grasslands, Private Bag 11008, Palmerston North, New Zealand

Hay, F. S. (1994). Surface sterilisation of Heterodera trifolii Goffart (Nematoda: Tylenchida) and its monoxenic cultures on root cultures of white clover (Trifolium repens L.). New Zealand Journal of Zoology 21(2): 209-212. AgRes. Grasslands Research Centre, Private Bag 11008, Palmerston North, New Zealand

Woodfield, D. R. and J. R. Caradus (1994). Genetic improvement in white clover representing six decades of plant breeding. Crop Science 34(5): 1205-1213. {a} N.Z. Pastoral Agric. Res. Inst., AgRes. Grasslands, Private Bag 11008, Palmerston North, New Zealand

Suzuki, Y., Y. H. Zhang, et al. (1994). Endogenous gibberellins in clover broomrape, a parasitic plant, and its host, clover: Dependency of the parasite on the host for gibberellin production. Journal of Plant Growth Regulation 13(2): 63-67. {a} Dep. Agric. Chem., Univ. Tokyo, Bunkyo-ku, Tokyo 113, Japan

Clinton, P. W. and D. J. Mead (1994). Competition for nitrogen between Pinus radiata and pasture. II. Trends in plant and soil processes. Canadian Journal of Forest Research 24(5): 889-896. {a} For. Technol. Div., N.Z. Forest Res. Inst. Ltd., P.O. Box 31-011, Christchurch, New Zealand

Clinton, P. W. and D. J. Mead (1994). Competition for nitrogen between Pinus radiata and pasture: I. Recovery of 15N after one growing season. Canadian Journal of Forest Research 24(5): 882-888. {a} For. Technol. Div., N.Z. Forest Res. Inst., P.O. Box 31-011, Christchurch, New Zealand

Williams, P. H. and R. J. Haynes (1994). Comparison of initial wetting pattern, nutrient concentrations in soil solution and the fate of 15N-labelled urine in sheep and cattle urine patch areas of pasture soil. Plant and Soil 162(1): 49-59. N.Z. Inst. Crop Food Res., Canterbury Agric. Sci. Cent., Private Bag 4704, Christchurch, New Zealand

Adams, W. A. and N. Akhtar (1994). The possible consequences for herbage growth of waterlogging compacted pasture soils. Plant and Soil 162(1): 1-17. {a} Inst. Biol. Sci., Univ. Wales, Aberystwyth SY23 3DE, UK

Marshall, A. H. (1994). Seasonal variation in the seed yield components of white clover (Trifolium repens). Plant Varieties and Seeds 7(2): 97-105. AFRC Inst. Grassland Environ. Res., Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Norrington, D. J. and D. J. Buckeridge (1994). Plant interference and chemical toxin in upland pastures. Grass and Forage Science 49(2): 176-182. {a} Dep. Agric. Sci., Univ. Wales, Aberystwyth, Dyfed SY23 3DD, UK

Lin, X. G., W. Y. Hao, et al. (1993). The beneficial effect of dual inoculation of vesicular-arbuscular mycorrhizae plus rhizobium on growth of white clover. Tropicultura 11(4): 151-154. Soil Mirobiol. Dep., Inst. Soil Sci., Acad. Sinica, 71 Beijing Road East, Nanjing, China

McNeill, A. M., R. C. Hood, et al. (1994). Direct measurement of nitrogen fixation by Trifolium repens L. and Alnus glutinosa L. using 15N-2. Journal of Experimental Botany 45(275): 749-755. Dep. Soil Sci., Univ. Reading, London Raod, Reading RG1 5AQ, UK

Orgambide, G. G., H. S. Philip, et al. (1994). Flavone-Enhanced Accumulation and Symbiosis-Related Biological Activity of a Diglycosyl Diacylglycerol Membrane Glycolipid from Rhizobium leguminosarum Biovar trifolii. Journal of Bacteriology 176(14): 4338-4347. {a} Dep. Microbiol., Michigan State Univ., East Lansing, MI 48824, USA

Rehder, H., M. Gokceoglu, et al. (1994). The vegetation of the Uludag Mountains (Anatolia). Phytocoenologia 24: 167-192. {a} Institut fuer Botanik und Mikrobiologie, TU Muenchen, D-80290 Muenchen, Germany

Moraes, A. A. S. D. and J. F. P. Lobato (1993). Effects of two weaning ages on the growth of beef calves. Revista da Sociedade Brasileira de Zootecnia 22(6): 885-892. {a} Enga. Agron., aluna Curso Pos-Graduacao em Zootecnia, Brazil

Pasumarty, S. V. (1994). A stain-clearing technique for observations within whole ovules of white clover (Trifolium repens L.). Nippon Sochi Gakkai Shi 39(4): 501-504. Lab. Forage Legume Breeding, Tohoku National Agricultural Experiment Station, Shimo-Kuriyagawa, Morioka 02801, Japan

Sawada, H. and K. Yamauchi (1994). Identification of white clover (Trifolium repens L.) clones using isozymes. Nippon Sochi Gakkai Shi 39(4): 488-496. Fac. Agric., Shizuoka Univ. Ooya-836, Shizuoka 422, Japan

Annicchiarico, P. and E. Piano (1994). Interference effects in white clover genotypes grown as pure stands and binary mixtures with different grass species and varieties. Theoretical and Applied Genetics 88(2): 153-158. {a} Ist. Sperimentale per le Colture Foraggere, Viale Piacenza 29, I-20075 Lodi, MI, Italy

Pederson, G. A. and M. R. McLaughlin (1994). Genetics of resistance to peanut stunt, clover yellow vein, and alfalfa mosaic viruses in white clover. Crop Science 34(4): 896-900. {a} USDA-ARS, Crop Sci. Res. Lab., Forage Res. Unit, P.O. Box 5367, Mississippi State, MS 39762, USA

Kemball, W. D. and C. Marshall (1994). The significance of nodal rooting in Trifolium repens L.: 32P distribution and local growth responses. New Phytologist 127(1): 83-91. {a} AFRC Inst. Grassland and Environ. Res., Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Taylor, N. L., J. M. Gillett, et al. (1994). Crossing and morphological relationships among native clovers of eastern North America. Crop Science 34(4): 1097-1100. {a} Univ. Ky., Lexington, KY 40546, USA

Murray, P. J. and R. O. Clements (1994). Investigations of the host feeding preferences of Sitona weevils found commonly on white clover (Trifolium repens) in the UK. Entomologia Experimentalis et Applicata 71(1): 73-79. AFRC Inst. Grassland Environmental Res., North Wyke Res. Station, Okehampton, Devon EX20 2SB, UK

Vidal, D. M. T., A. C. Azcon, et al. (1994). Preferential sporulation of Glomus fasciculatum in the root nodules of herbaceous legumes. Symbiosis 16(1): 65-73. Dep. Microbiol., Estacion Experimental Zaidin, C.S.I.C., Prof. Albareda 1, 18008 Granada, Spain

Heagle, A. S., J. E. Miller, et al. (1994). A white clover system to estimate effects of tropospheric ozone on plants. Journal of Environmental Quality 23(3): 613-621. {a} USDA-ARS, Dep. Plant Pathol., North Carolina State Univ., Raleigh, NC 27606, USA

Yang, F. L. and L. P. Lin (1994). Role of lipopolysaccharides in the initial infection process of rhizobium-soybean symbiosis. Journal of the Chinese Agricultural Chemical Society 32(1): 75-90. {a} Graduate Inst. Agric. Chem., Natl. Taiwan Univ., Taipei, Taiwan

Tsuyuzaki, S. (1994). Fate of plants from buried seeds on volcano Usu, Japan, after the 1977-1978 eruptions. American Journal of Botany 81(4): 395-399. Grad. Sch. Sci. and Technol., Niigata University, Niigata, 950-21, Japan

Lattimore, M. A. E., J. A. Thompson, et al. (1994). Irrigation frequency for white clover and lucerne on a cracking clay in the Murrumbidgee Valley, New South Wales. Australian Journal of Experimental Agriculture 34(1): 41-49. {a} NSW Agric., Agric. Inst., Yanco, NSW 2703, Australia

Oliva, R. N., J. J. Steiner, et al. (1994). White clover seed production: II. Soil and plant water status on yield and yield components. Crop Science 34(3): 768-774. {a} Natl. Forage Seed Production Res. Cent., USDA-ARS, 3450 SW Campus Way, Corvallis, OR 97331, USA

Oliva, R. N., J. J. Steiner, et al. (1994). White clover seed production: I. Crop water requirements and irrigation timing. Crop Science 34(3): 762-767. {a} Natl. Forage Seed Prod. Res. Cent., USDA-ARS, 3450 SW Campus Way, Corvallis, OR 97331, USA

Costello, M. J. (1994). Broccoli growth, yield and level of aphid infestation in leguminous living mulches. Biological Agriculture and Horticulture 10(3): 207-222. Lab. Biological Control, University California at Berkeley, Kearney Agric. Cent., 9240 S. Riverbend Avenue, Parlier, CA 93648, USA

Van, T. R. F. and K. G. Dodds (1994). Assessment of grass grub (Costelytra zealandica (White)) (Coleoptera: Scarabaeidae) damage in ryegrass-white clover pasture in Southland. New Zealand Journal of Agricultural Research 37(1): 99-105. AgRes. Invermay Agric. Cent., Private Bag 50034, Mosgiel, New Zealand

Kakes, P. and H. W. J. Hakvoort (1994). On the origin of the cyanogenic polymorphism in Trifolium repens L. Journal of Evolutionary Biology 7(2): 201-215. Dep. Ecol. Ecotoxiol., Vrije Univ., De Boelelaan 1087, 1081 HV Amsterdam, Netherlands

Xia, J. X., J. Hodgson, et al. (1994). Effects of severity of grazing on tissue turnover in Matua prairie grass dairy pasture. New Zealand Journal of Agricultural Research 37(1): 41-50. {a} Dep. Anim. Sci., Beijing Agric. Univ., Beijing, China

Wardle, D. A., K. S. Nicholson, et al. (1994). Influence of herbicide applications on the decomposition, microbial biomass, and microbial activity of pasture shoot and root litter. New Zealand Journal of Agricultural Research 37(1): 29-39. AgRes., Ruakura Agric. Res. Cent., Private Bag 3123, Hamilton, New Zealand

Soetrisno, E., T. N. Barry, et al. (1994). Effects of grazing red clover (Trifolium pratense) or perennial ryegrass (Lolium perenne)/white clover (Trifolium repens) pastures upon growth and venison production from weaner red deer (Cervus elaphus). New Zealand Journal of Agricultural Research 37(1): 19-27. {a} Dep. Anim. Sci., Massey Univ., Palmerston North, New Zealand

Hart, A. L. and W. A. Collier (1994). The effects of phosphorus and form of nitrogen supply on leaf cell size and nutrient content in Trifolium repens and Lotus uliginosus. Grass and Forage Science 49(1): 96-104. {a} AgRes. Grasslands, Private Bag 11008, Palmerston North, New Zealand

Belesky, D. P. and W. L. Stout (1994). Growth of prairie grass (Bromus willdenowii) and tall fescue X perennial ryegrass (Festuca arundinacea X Lolium perenne ) on the Appalachian plateau of southern West Virginia, USA. Grass and Forage Science 49(1): 21-24. {a} USDA, ARS Box 867, Airport Rd., Beckley, WV 25802, USA

Hopkins, A., A. H. Adamson, et al. (1994). Response of permanent and reseeded grassland to fertilizer nitrogen: 2. Effects on concentrations of Ca, Mg, K, Na, S, P, Mn, Zn, Cu, Co and Mo in herbage at a range of sites. Grass and Forage Science 49(1): 9-20. {a} AFRC Inst. Grassland Environmental Res., North Wyke Research Station, Okehampton, Devon EX20 2SB, UK

Voisey, C. R., D. W. R. White, et al. (1994). Agrobacterium-mediated transformation of white clover using direct shoot organogenesis. Plant Cell Reports 13(6): 309-314. {a} Plant Molecular Genetics Lab., AgRes., Grassland Res. Centre, Private Bag 11008, Palmerston North, New Zealand

White, D. W. R. and C. Voisey (1994). Prolific direct plant regeneration from cotyledons in white clover. Plant Cell Reports 13(6): 303-308. {a} Plant Molecular Genetics Lab., AgRes. Grassland Res. Center, Private Bag 11008, Palmerston North, New Zealand

Lee, C. K., H. A. Eagles, et al. Investigation of yield and persistence of white clover using cluster analyses. Euphytica 72(3): 219-224. {a} Pastoral Vet. Inst., PB 105, Hamiltn, VIC 3300, Australia

Abaye, A. O., V. G. Allen, et al. (1994). Influence of grazing cattle and sheep together and separately on animal performance and forage quality. Journal of Animal Science 72(4): 1013-1022. {a} Dep. Crop Soil Environ. Sci., Va. Polytechnic Inst. State Univ., Blacksburg, VA 24061-0404, USA

Von, B. W. O. and U. Schultheiss (1994). The influence of undersown green manure crops for fallows - set-aside land - in view of vegetation-development and the dynamic of nitrate. Journal of Agronomy and Crop Science 172(1): 52-61. {a} Ludwigstrasse 23, D-35390 Giessen, Germany

Maeda, Y. and H. Takenaga (1993). Salt tolerance of reed canarygrass (Phalaris arundinacea L.) grown on soil perfused with urine. Journal of Japanese Society of Grassland Science 39(1): 116-119. Tokyo Univ. Agric., Setagaya, Tokyo 156, Japan

Rao, J. R., M. Fenton, et al. (1994). Symbiotic plasmid transfer in Rhizobium leguminosarum biovar trifolii and competition between the inoculant strain ICMP2163 and transconjugant soil bacteria. Soil Biology and Biochemistry 26(3): 339-351. {a} Dep. Microbiol. Genetics, Massey Univ., Private Bag, Palmerston North, New Zealand

Pasumarty, S. V., T. Matsumura, et al. (1993). Seed production in white clover (Trifolium repens L.): 1. Seed set. Journal of Japanese Society of Grassland Science 39(2): 169-176. {a} Tohoku Natl. Agric. Exp. Stn., Shimo-Kuriyagawa, Morioka 020-01, Japan

Takahashi, Y., I. Otani, et al. (1993). Studies on allelopathic interactions among some grassland species: V. Collection and isolation of allelopathic hydrophobic compounds from the root exudates of Lolium perenne L. Journal of Japanese Society of Grassland Science 39(2): 236-245. Chugoku Natl. Agric. Exp. Stn., Oda, Shimane 694, Japan

Thompson, K., A. Green, et al. (1994). Seeds in soil and worm casts from a neutral grassland. Functional Ecology 8(1): 29-35. {a} NERC Unit Comparative Plant Ecol., Dep. Anim. Plant Sci., Univ., Sheffield S10 2TN, UK

Jahufer, M. Z. Z., M. Cooper, et al. (1994). Genotypic variation for stolon and other morphological attributes of white clover (Trifolium repens L.) populations and their influence on herbage yield in the summer rainfall region of New South Wales. Australian Journal of Agricultural Research 45(3): 703-720. {a} NSW Agric., Agric. Res. Advisory Stn., PMB, Glen Innes, N.S.W. 2370, Australia

Fulkerson, W. J. and K. Slack (1994). Management of Lolium perenne/Trifolium repens pastures in the subtropics: II. Effect of summer defoliation, irrigation duration, seedbed preparation and pasture type. Australian Journal of Agricultural Research 45(3): 721-728. NSW Agric. Wollongbar Agric. Inst., Wollongbar, NSW 2477, Australia

Gourley, C. J. P., D. L. Allan, et al. (1994). Plant nutrient efficiency: A comparison of definitions and suggested improvement. Plant and Soil 158(1): 29-37. {a} Ellinbank Dairy Res. Inst., Victorian Dep. Agric., Warragul South, VIC 3820, Australia

Ikeda, J. (1994). The effect of short term withdrawal of NaCl stress on nodulation of white clover. Plant and Soil 158(1): 23-27. Dep. Crop Breed., Tohoku Natl. Agric. Exp. Stn., Shimo-Kuriyagawa, Morioka, Iwate 020-01, Japan

Fulkerson, W. J. and K. Slack (1993). Estimating mass of temperate and tropical pastures in the subtropics. Australian Journal of Experimental Agriculture 33(7): 865-869. NSW Agric., Wollongbar Agric. Inst., Wollongbar, NSW 2477, Australia

Saloniemi, H., K. Kallela, et al. (1993). Study of the phytoestrogen content of goat's rue (Galega orientalis), alfalfa (Medicago sativa) and white clover (Trifolium repens). Agricultural Science in Finland 2(6): 517-524. Coll. Vet. Med., Dep. Basic Vet. Med., Sect. Anim. Hyg., Box 6, FIN-00581 Helsinki, Finland

Fuhrer, J., R. Perler, et al. (1993). Growth and gas exchange characteristics of two clones of white clover Trifolium repens L. differing in ozone sensitivity. Angewandte Botanik 67(5-6): 163-167. {a} Forschungsanstalt Agrikulturchemie Umwelthygiene, Schwarzenburgstrasse 155, CH-3097 Liebefeld-Bern, Switzerland

Bergelson, J. (1994). The effects of genotype and the environment on costs of resistance in lettuce. American Naturalist 143(2): 349-359. Dep. Biol., Campus Box 1137, No. 1 Brookings Drive, Washington Univ., St. Louis, MO 63130, USA

Rios, S., A. Robledo, et al. (1993). Contributions to the vascular flora of Andalucia (Spain) and of Er Rif (Morocco): 31. Contributions to the flora of eastern Andalucia: Despenaperros Region (Juen). Acta Botanica Malacitana 18: 295-298. {a} Dep. Cultivos Zonas Aridas, C.I.D.A., Consejeria de Agricultura, Ganaderia y Pesca, La Alberca, 30150 Murcia, Spain

Freudenberger, D. O., C. J. Burns, et al. (1994). Digestion and rumen metabolism of red clover and perennial ryegrass/white clover forages by red deer. Journal of Agricultural Science 122(1): 115-120. {a} Dep. Anim. Sci., Massey Univ., Palmerston North, New Zealand

Nguyen, M. L. and K. M. Goh (1994). Distribution, transformations and recovery of urinary sulphur and sources of plant-available soil sulphur in irrigated pasture soil-plant systems treated with 35sulphur-labelled urine. Journal of Agricultural Science 122(1): 91-105. Dep. Soil Sci., Lincoln Univ., Canterbury, New Zealand

Yamada, T., A. Sakai, et al. (1993). Plant regeneration of meristematic callus of white clover (Trifolium repens L.) cooled to -196 degree C by vitrification. Euphytica 70(3): 197-203. {a} Yamanashi Prefectural Dairy Exp. Station, Nagasaka-Kamijo 621, Nagasaka, Kitakoma, Yamanshi 408, Japan

Przywara, L. and R. Konieczny (1993). An attempt to cross Trifolium repens with T. xerocephalum (Fabaceae). Fragmenta Floristica et Geobotanica 38(1): 69-74. Inst. Botany, Dep. Plant Cytology Embryology, Jagiellonian Univ., Grodzka 52, PL-31-044 Krakow, Poland

Douglas, G. B. and A. G. Foote (1993). Growth of sheep's burnet and two dryland legumes under periodic mob-stocking with sheep. New Zealand Journal of Agricultural Research 36(4): 393-397. AgRes. Grasslands, Private Bag 11008, Palmerston North, New Zealand

Annicchiarico, P. (1993). Variation for dry matter yield, seed yield and other agronomic traits in Ladino white clover landraces and natural populations. Euphytica 71(1-2): 131-141. Istituto Sperimentale Colture Foraggere, 29 Viale Piacenza, 20075 Lodi, Italy

Merchant, M. (1993). The potential for control of the soft rush (Juncus effusus) in grass pasture by grazing goats. Grass and Forage Science 48(4): 395-409. Macaulay Land Use Research Institute, Craigiebuckler, Aberdeen AB9 2QJ, UK

Acuna, P. G. H. and D. Wilman (1993). Some effects of added phosphorus on perennial ryegrass-white clover swards. Grass and Forage Science 48(4): 416-420. {a} Dep. Agricultural Sciences, University College Wales, Aberystwyth, Dyfed SY23 3DD, UK

Gourley, C. J. P., D. L. Allan, et al. (1993). Defining phosphorus efficiency in plants. Plant and Soil 155-156: 289-292. {a} Ellinbank Dairy Research Inst., Victorian Dep. Agric., Warragul South, Victoria 3820, Australia

Jakobsen, H. B. and C. E. Olsen (1994). Influence of climatic factors on emission of flower volatiles in situ. Planta Heidelberg 192(3): 365-371. {a} Dep. Plant Biol., Plant Physiol. and Anat. Lab., Royal Veterinary and Agric. Univ., Thorvaldsensvej 40, DK-1871 Frederiksberg C, Denmark

Dunlop, J. and S. Gardiner (1993). Phosphate uptake, proton extrusion and membrane electropotentials of phosphorus-deficient Trifolium repens L. Journal of Experimental Botany 44(269): 1801-1808. {a} AgResearch Grasslands, Private Bag 11008, Palmerston North, New Zealand

Mueller, J., Z. P. Xie, et al. (1994). Trehalose and trehalase in root nodules from various legumes. Physiologia Plantarum 90(1): 86-92. {a} Botanisches Inst., Univ. Basel, Hebelstrasse 1, CH-4056 Basel, Switzerland

McLaughlin, M. R., G. L. Windham, et al. (1993). Response of Trifolium repens clones to infection by Meloidogyne incognita and peanut stunt virus. Journal of Nematology 25(4 Suppl.): 869-875. {a} USDA ARS, Crop Sci. Res. Lab., Forage Res. Unit, P.O. Box 5367, Mississippi State, MS 39762, USA

Newton, P. C. D., H. Clark, et al. (1994). Effects of elevated CO-2 and simulated seasonal changes in temperature on the species composition and growth rates of pasture turves. Annals of Botany London 73(1): 53-59. {a} AgResearch Grasslands, Flock House Agricultural Cent., Private Bag, Bulls, New Zealand

Staley, T. E. (1993). Growth of perennial forage legumes in acidic soils of the appalachian hill-lands after liming. Journal of Plant Nutrition 16(12): 2577-2590. USDA, ARS, NAA, Appalachian Soil Water Conservation Res. Lab., P.O. Box 867, Beckley, WV 25802-0867, USA

Shanks, C. H., Jr. and J. D. Chamberlain (1993). Strawberry fruit yield and vegetative growth and pest populations in plantings with and without cover crops. Hortscience 28(12): 1172-1173. Res. Extension Unit, Washington State Univ., 1919 N.E. 78th Street, Vancouver, WA 98665-9752, USA

Newman, J. A., P. D. Penning, et al. (1994). Fasting affects intake behaviour and diet preference of grazing sheep. Animal Behaviour 47(1): 185-193. {a} AFRC, Unit Ecology Behaviour, Dep. Zool., Univ. Oxford, South Parks Road, Oxford OX1 3PS, UK

Stute, J. K. and J. L. Posner (1993). Legume cover crop options for grain rotations in Wisconsin. Agronomy Journal 85(6): 1128-1132. {a} Dep. Agron., 1575 Linden Dr., Univ. Wis., Madison, WI 53706, USA

Rowe, D. E. and G. E. Brink (1993). Heritabilities and genetic correlations of white clover clones grown in three environments. Crop Science 33(6): 1149-1152. {a} USDA-ARS, Crop Sci. Res. Lab., Forage Res. Unit, P.O. Box 5367, Mississippi, MS 39762, USA

Isselstein, J. and P. Ridder (1993). Studies on drying of some grassland herbs under controlled conditions. Wirtschaftseigene Futter 39(2): 136-145. Inst. Pflanzenbau Pflanzenzuechtung II Gruenlandwirtschaft Futterbau, Justus-Liebig-Univ. Giessen, Ludwigstr. 23, 35390 Giessen, Germany

Mitchell, G. J., S. R. Chinner, et al. (1992). Tolerance of four pasture legumes and a perennial ryegrass to pre-sowing applications of metsulfuron methyl on acid soil. Plant Protection Quarterly 7(3): 121-124. South Aust. Dep. Agric., Flaxley Res. Cent., P.O. Box 1571, Flaxley, SA 5153, Australia

Zebarth, B. J., S. Freyman, et al. (1993). Effect of ground covers and tillage between raspberry rows on selected soil physical and chemical parameters and crop response. Canadian Journal of Soil Science 73(4): 481-488. Agric. Can., Res. Stn., Agassiz, BC VOM 1AO, Canada

Amijee, F., D. P. Stribley, et al. (1993). The susceptibility of roots to infection by an arbuscular mycorrhizal fungus in relation to age and phosphorus supply. New Phytologist 125(3): 581-586. {a} Room A323, Dep. Environ., Romney House, 43 Marsham St., London SE1P 3PY, UK

Fraser, J., K. Sutherland, et al. (1993). Effects of autumn harvest date on the performance of white clover/grass mixtures in Nova Scotia. Journal of Agricultural Science 121(3): 315-321. {a} Agriculture Can. Res. Station, P.O. Box 3000, Main, Lethbridge, AB T1J 4B1, Canada

Faurie, O. and J. F. Soussana (1993). Oxygen-induced recovery from short-term nitrate inhibition of N-2 fixation in white clover plants from spaced and dense stands. Physiologia Plantarum 89(3): 467-475. {a} Station d'Agronomie Mycologie, INRA, 12 Av. du Brezet, F-63039 Clermont-Ferrand Cedex 2, France

Rogers, M. E. and D. W. West (1993). The effects of rootzone salinity and hypoxia on shoot and root growth in Trifolium species. Annals of Botany London 72(5): 503-509. Dep. Agric., Inst. Sustainable Irrigated Agric., Tatura 3616, Australia

Turkington, R. and E. Klein (1993). Influence of neighbors on node production, stolon growth, and branching of Trifolium repens transplants in a pasture. Canadian Journal of Botany 71(9): 1266-1269. {a} Botany Dep., Univ. British Columbia, Vancouver, BC V4K 1Z4, Canada

Annicchiarico, P. and E. Piano (1993). Performance of white clover genotypes in monoculture and in binary mixtures with two ryegrass varieties. Journal of Genetics and Breeding 47(2): 175-177. {a} Ist. Sperimentale Colt. Foraggere, Viale Piacenza 29, 20075 Lodi, Italy

Heim, I., U. A. Hartwig, et al. (1993). Current nitrogen fixation is involved in the regulation of nitrogenase activity in white clover (Trifolium repens L.). Plant Physiology Rockville 103(3): 1009-1014. {a} Inst. Plant Sci., Swiss Federal Inst. Technol., 8092 Zurich, Switzerland

Djingova, R., I. Kuleff, et al. (1993). Comparison of the ability of several vascular plants to reflect environmental pollution. Chemosphere 27(8): 1385-1396. {a} Fac. Chem., Univ. Sofia, 1126 Sofia, Bulgaria

Korn, R. W. (1993). Evidence in dicots for stomatal patterning by inhibition. International Journal of Plant Sciences 154(3): 367-377. Bellarmine College, Louisville, KY 40205, USA

Tsuyuzaki, S. (1993). Seed viability after immersion in K-2CO-3 solution. Seed Science and Technology 21(2): 479-481. Dep. Botany KB-15, Univ. Wash., Seattle, WA 98198, USA

Dernoeden, P. H., M. J. Carroll, et al. (1993). Weed management and tall fescue quality as influenced by mowing, nitrogen and herbicides. Crop Science 33(5): 1055-1061. {a} Dep. Agron., Univ. Maryland, College Park, MD 20742, USA

Hirsch, P. R., J. J. Jones, et al. (1993). Heavy metals from past applications of sewage sludge decrease the genetic diversity of Rhizobium leguminosarum biovar trifolii populations. Soil Biology and Biochemistry 25(11): 1485-1490. {a} Soil Sci. Dep., AFRC Inst. Arable Crops Res., Rothamsted Exp. Stn., Harpenden, Herts AL5 2JQ, UK

Semiadi, G., T. N. Barry, et al. (1993). Growth and venison production from red deer (Cervus elaphus) grazing red clover (Trifolium pratense) or perennial ryegrass (Lolium perenne)/white clover (Trifolium repens) pasture. Journal of Agricultural Science 121(2): 265-271. {a} Massey Univ., Palmerston North, New Zealand

Brink, G. E. and D. E. Rowe (1993). Growth of white clover clones in monoculture and contrasting bermudagrass swards. Crop Science 33(5): 1091-1094. {a} USDA-ARS, Crop Sci. Res. Lab., Forage Res. Unit, P.O. Box 5367, Mississippi State, MS 39762, USA

Hume, D. E. and D. F. Chapman (1993). Oversowing of five grass species and white clover on a Taupo hill country pumice soil. New Zealand Journal of Agricultural Research 36(3): 309-322. AgRes., Grasslands Res. Centre, Private Bag 11008, Palmerston North, New Zealand

Caradus, J. R., J. B. Pinxterhuis, et al. (1993). Response of white clover cultivars to fertiliser nitrogen. New Zealand Journal of Agricultural Research 36(3): 285-295. AgRes., Grasslands Res. Centre, Private Bag 11008, Palmerston North, New Zealand

Chapman, D. F. and M. J. M. Hay (1993). Translocation of phosphorus from nodal roots in two contrasting genotypes of white clover (Trifolium repens). Physiologia Plantarum 89(2): 323-330. {a} AgRes. Grasslands, Private Bag 11008, Palmerston North, New Zealand

Martini, F. and M. Thellier (1993). Boron distribution in parenchyma cells of clover leaves. Plant Physiology and Biochemistry Paris 31(5): 777-786. {a} Lab. "Processus Ioniques Cellulaires", Fac. Sci., Univ. Rouen, 76821 Mont-Saint-Aignan Cedex, France

Dale, P. J. and V. A. Cheyne (1993). The elimination of clover diseases by shoot tip culture. Annals of Applied Biology 123(1): 25-32. {a} Cambridge Lab., John Innes Centre, Colney, Norwich NR4 7UJ, UK

Jones, L. and R. O. Clements (1993). Development of a low input system for growing wheat (Triticum vulgare) in a permanent understory of white clover (Trifolium repens). Annals of Applied Biology 123(1): 109-119. {a} AFRC Inst. Grassland and Environ. Res., North Wyke, Okehampton, Devon EX20 2SB, UK

Powles, J., J. Wiseman, et al. (1993). Effect of chemical structure of fats upon their apparent digestible energy value when given to growing/finishing pigs. Animal Production 57(1): 137-146. {a} Univ. Nottingham Dep. Agric. Hortic., Sutton Bonington, Loughborough LE12 5RD, England, UK

Wilman, D. and S. P. Williams (1993). A comparison of grass/white clover and grass silages offered to dairy cows as the sole feed. Grass and Forage Science 48(3): 231-237. {a} Dep. Agric. Sci., University College Wales, Aberystwyth, Dyfed SY23 3DD, UK

Turkova, E. V. (1992). The morphophysiological characteristic of potential and real productivity of alfalfa varieties. Biologicheskie Nauki Moscow(11-12): 107-114. Lab. Biol. Dev. Plant, Mosc. State Univ., Moscow, Russia

Rosnes, K., O. Junttila, et al. (1993). Development of cold tolerance in white clover (Trifolium repens L.) in relation to carbohydrate and free amino acid content. Acta Agriculturae Scandinavica Section B Soil and Plant Science 43(3): 151-155. {a} Dep. Plant Physiology and Microbiol., Inst. Biol. and Geol., Univ. Tromso, N-9037 Tromso, Norway

Landstrom, S. (1993). Variation in the growth potential in a timothy and red clover mixture. Acta Agriculturae Scandinavica Section B Soil and Plant Science 43(3): 156-162. Dep. Crop Production Sci., Swed. Univ. Agric. Sci., S-904 03 Umea, Sweden

Bojas, Z. (1993). Regulation of weed communities in clover crops. Ochrana Rostlin 29(2): 147-153. Vyzkumny ustav picninarsky, 664 41 Troubsko u Brna, Czechoslovakia

Marshall, A. H., P. A. Hollington, et al. (1993). Spring defoliation of white clover seed crops: 2. Potential harvestable seed yield and seed yield components of contrasting white clover cultivars. Grass and Forage Science 48(3): 310-316. {a} AFRC Inst. Grassland Environmental Res., Welsh Plant Breeding Station, Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Davies, D. A., M. Fothergill, et al. (1993). Assessment of contrasting perennial ryegrasses, with and without white clover, under continuous sheep stocking in uplands: 5. Herbage production, quality and intake in years 4-6. Grass and Forage Science 48(3): 213-222. {a} IGER, Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Laws, J. A. (1993). A comparison of the output from permanent swards containing clover or receiving nitrogen fertilizer when continuously grazed by ewes and lambs. Grass and Forage Science 48(3): 238-248. AFRC Inst. Grassland Environmental Res., North Wyke, Okehampton, Devon EX20 2SB, UK

Thompson, L. (1993). The influence of the radiation environment around the node on morphogenesis and growth of white clover (Trifolium repens). Grass and Forage Science 48(3): 271-278. NERC Center Population Biol., Imperial College, Silwood Park, Ascot, Berks SL5 7PY, UK

Swift, G., J. E. Vipond, et al. (1993). A comparison of diploid and tetraploid perennial ryegrass and tetraploid ryegrass/white clover swards under continuous sheep stocking at controlled sward heights: 1. Sward characteristics. Grass and Forage Science 48(3): 279-289. {a} Scottish Agric. College, Bush Estate, Penicuik, Midlothian EH26 0PH, UK

Cowling, W. A. and J. C. Clements (1993). Association between collection site soil pH and chlorosis in Lupinus angustifolius induced by a fine-textured, alkaline soil. Australian Journal of Agricultural Research 44(8): 1821-1836. {a} Western Aust. Dep. Agric., South Perth, WA 6151, Australia

Fulkerson, W. J., K. Slack, et al. (1993). Management of Lolium perenne/Trifolium repens pastures in the subtropics: I. Effect of defoliation interval, seeding rate and application of nitrogen and lime. Australian Journal of Agricultural Research 44(8): 1947-1958. NSW Agric., Wollongbar Agric. Inst., Wollongbar, NSW 2480, Australia

Van, D. M. P. J. G., E. Nel, et al. (1993). Evaluating the effect of industrial effluents on soil biodegradation and germination with microbial activity and germination tests. South African Journal of Plant and Soil 10(2): 53-57. {a} Inst. Grond, Klimaat Water, Privaatsak X79, Pretoria 0001, Republiek van Suid-Afrika

Garcia, S. M. J., J. A. Fernandez, et al. (1993). Biochemical and physiological responses of Gracilaria tenuistipitata under two different nitrogen treatments. Physiologia Plantarum 88(4): 631-637. {a} Dpto Biologia Vegetal, Fac. Ciencias, Univ. de Malaga, Campus Teatinos, E-29071 Malaga, Spain

Sandli, N., M. M. Svenning, et al. (1993). Effect of nitrogen supply on frost resistance, nitrogen metabolism and carbohydrate content in white clover (Trifolium repens). Physiologia Plantarum 88(4): 661-667. {a} Dep. Plant Physiol. and Microbiol., Univ. Tromso, N-9037 Tromso, Norway

Malakhov, V. V., A. I. Obzhirov, et al. (1992). The connection between Pogonophora of the genus Siboglinum and areas with high methane concentrations. Doklady Akademii Nauk 325(1): 195-197. {a} M.V. Lomonosov Mosc. State Univ., Moscow, Russia

Hay, F. S. and R. A. Skipp (1993). Fungi and actinomycetes associated with cysts of Heterodera trifolii Goffart (Nematoda: Tylenchida) in pasture soils in New Zealand. Nematologica 39(3): 376-384. New Zealand Pastoral Agric. Res. Inst. Ltd., Grasslands Res. Centre, Private Bag 11008, Palmerston North, New Zealand

Etheridge, M. O., C. R. Stockdale, et al. (1993). Influence of method of conservation of lucerne on factors associated with voluntary intake in sheep. Australian Journal of Experimental Agriculture 33(4): 417-423. {a} PO Box 36, Coldstream, Vic. 3770, Australia

Mears, P. T. and B. R. Cullis (1993). Superphosphate maintains soil fertility and beef production on grazed white clover pastures in the subtropics: 2. Liveweight responses of beef cattle. Australian Journal of Experimental Agriculture 33(4): 435-442. {a} NSW Agric., Agric. Res. and Advisory Station, Grafton NSW 2460, Australia

Loss, S. P., G. S. P. Ritchie, et al. (1993). Effect of lupins and pasture on soil acidification and fertility in western Australia. Australian Journal of Experimental Agriculture 33(4): 457-464. {a} Western Australian Dep. Agric., 3 Baron-Hay Court, South Perth, WA 6151, Australia

Mears, P. T., E. J. Havilah, et al. (1993). Superphosphate maintains soil fertility and beef production on grazed white clover pastures in the subtropics: 1. Residual soil phosphorus, sulfur, and nitrogen, and pasture growth responses. Australian Journal of Experimental Agriculture 33(4): 425-434. {a} NSW Agric., Agric. Res. and Advisory Station, Grafton, NSW 2460, Australia

Sundriyal, R. C., E. Sharma, et al. (1993). Effect of cutting height and frequency on the above-ground biomass in a central Himalayan grassland in India. Tropical Grasslands 27(1): 37-42. {a} G.B. Pant Inst. Himalayan Environment Development, Sikkim Unit, Tadong, Gangtok, Sikkim-747 102, India

Schiller, K. N. and J. F. Ayres (1993). The effects of winter conditions on the nutritive value of Lotus pedunculatus cv. Grasslands Maku and Trifolium repens cv. Haifa. Tropical Grasslands 27(1): 43-47. {a} Agric. Research Advisory Station, NSW Agric., PMB, Glen Innes, NSW 2370, Australia

Hilligardt, M. (1993). Strategies of persistence and reproduction in Trifolium pallescens Schreb. and Trifolium thalii Vill.: II. Studies in population biology. Flora Jena 188(2): 175-195. Wolfsbergallee 53, W-7530 Pforz-heim

Poinsot, B. N., L. Racon, et al. (1993). Effects of tannin compounds on two species of Collembola. European Journal of Soil Biology 29(1): 13-16. {a} Lab. de Biosystematique et Ecol. Mediterraneenne, Univ. de Provence, UA 1152, Centre Sainte-Jerome, 13397 Marseille, Cedex 20, France

Borg, P. and M. Tolvanen (1993). Notes on foraging ecology of honey bees in the southwestern archipelago of Finland. Memoranda Societatis pro Fauna et Flora Fennica 69(1): 16-20. {a} Dep. Botany, P.O. Box 7, FIN-00014 University of Helsinki, Finland

Dobrenz, A. K., S. E. Smith, et al. (1993). Carbohydrates in alfalfa seed developed for salt tolerance during germination. Agronomy Journal 85(4): 834-836. {a} Dep. Plant Sci., Univ. Ariz., Tucson, AZ 85721, USA

Brink, G. E. and G. A. Pederson (1993). White clover response to grazing method. Agronomy Journal 85(4): 791-794. {a} USDA-ARS, Crop Sci. Res. Lab., Forage Res. Unit, P.O. Box 5367, Mississippi State, MS 39762, USA

Sun, D. and M. J. Liddle (1993). A survey of trampling effects on vegetation and soil in eight tropical and subtropical sites. Environmental Management 17(4): 497-510. {a} Div. Australian Environ. Studies, Griffith Univ., Nathan, Queensland 4111, Australia

Sun, D. and M. J. Liddle (1993). Plant morphological characteristics and resistance to simulated trampling. Environmental Management 17(4): 511-521. P.O. Box 210, Atherton, Queensland 4883, Australia

Verma, V. K., R. K. Mishra, et al. (1993). Response of dwarf wheat varieties to varying levels of nitrogen under irrigated condition at Raigarh district of Chhattisgarh region of Madhya Pradesh. Advances in Plant Sciences 6(1): 1-9. Indira Gandhi Agric. Univ., Reg. Agric. Res. Stn., Sarkanda, Bilaspur 495 001, India

Wilman, D. and P. G. H. Acuna (1993). Effects of cutting height on the growth of leaves and stolons in perennial ryegrass-white clover swards. Journal of Agricultural Science 121(1): 39-46. {a} Dep. Agric. Sci., Univ. College Wales, Aberystwyth, Dyfed SY23 3DD, UK

Cardon, G. E. and J. Letey (1992). Soil-based irrigation and salinity management model: I. Plant water uptake calculations. Soil Science Society of America Journal 56(6): 1881-1887. {a} Agronomy Dep., Colorado State Univ., Fort Collins, CO 80523, USA

Francis, G. S. and T. L. Knight (1993). Long-term effects of conventional and no-tillage on selected soil properties and crop yields in Canterbury, New Zealand. Soil and Tillage Research 26(3): 193-210. {a} NZ Inst. Crop Food Res., Canterbury Agric. Sci. Centre, Private Bag 4704, Christchruch, N.Z

Lamond, W. J. and G. Graham (1993). Relationship between air conditions and the drying rate of thin-layers of grass. Journal of Agricultural Science 121(1): 21-28. Scott. Center Agric. Eng., Scott. Agric. College, Bush Estate, Penicuik, Midlothian EH26 0PH, UK

Acuna, G. H. and D. Wilman (1993). Effects of cutting height on the productivity and composition of perennial ryegrass-white clover swards. Journal of Agricultural Science 121(1): 29-37. {a} Dep. Agric. Sci., Univ. Coll. Wales, Aberystwyth, Dyfed SY23 3DD, UK

Sakadevan, K., M. J. Hedley, et al. (1993). Mineralisation and fate of soil sulphur and nitrogen in hill pastures. New Zealand Journal of Agricultural Research 36(2): 271-281. {a} AgResearch Grassland, Private Bag 11008, Palmerston North, New Zealand

Crush, J. R. (1993). Hydrogen evolution from root nodules of Trifolium repens and Medicago sativa plants grown under elevated atmospheric carbon dioxide. New Zealand Journal of Agricultural Research 36(2): 177-183. N.Z. Pastoral Agric Res. Inst. Ltd., Private Bag 3123, Hamilton, New Zealand

Francisco, O. J., B. R. Reghunath, et al. (1993). Discrimination between groups of tagasaste and escobon from the Canary Islands based on juvenile morphological characters. New Zealand Journal of Agricultural Research 36(2): 185-195. {a} Dep. Plant Biol., Ohio State Univ., 1735 Neil Ave., Columbus, OH 43210-1293, USA

Thom, E. R., D. D. Wildermoth, et al. (1993). Growth and persistence of perennial ryegrass and white clover direct-drilled into a paspalum-dominant dairy pasture treated with glyphosate. New Zealand Journal of Agricultural Research 36(2): 197-207. Dairying Res. Corp., Private Bag 3123, Hamilton, New Zealand

Blum, A. and J. W. Johnson (1993). Wheat cultivars respond differently to a drying top soil and a possible non-hydraulic root signal. Journal of Experimental Botany 44(264): 1149-1153. {a} Inst. Field Crops, Volcani Cent., P.O. Box 6, Bet Dagan, Israel

Turner, L. B. (1993). The effect of water stress on floral characters, pollination and seed set in white clover (Trifolium repens L.). Journal of Experimental Botany 44(264): 1155-1160. AFRC Inst. Grassland Environ. Res., Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, Wales, UK

Langakumar, K. and G. Kulandaivelu (1993). Changes induced by ultraviolet-B radiation in vegetative growth, foliar characteristics and photosynthetic activities in Vigna unguiculata. Australian Journal of Plant Physiology 20(3): 299-308. Sch. Biological Sci., Madurai Kamaraj University, Madurai 625 021, India

Pasumarty, S. V. and D. W. Fountain (1993). Influence of light on assimilate partitioning in white clover (Trifolium repens L.). Australian Journal of Plant Physiology 20(3): 323-328. {a} Tohoku National Agricultural Experiment Station, Shimo-kuriyagawa, Morioka, Iwate 020-01, Japan

Vega, F. E., R. E. Davis, et al. (1993). Detection of a plant pathogen in a nonvector insect species by the polymerase chain reaction. Phytopathology 83(6): 621-624. {a} Mycotoxin Res. Unit, Natl. Center Agric. Utilization Res., USDA, Agric. Res. Serv., 1815 N. University St., Peoria, IL 61604, USA

Firrao, G., E. Gobbi, et al. (1993). Use of polymerase chain reaction to produce oligonucleotide probes for mycoplasma-like organisms. Phytopathology 83(6): 602-607. Dep. Biol. Applicata Difesa delle Piante, Univ. Udine, I-33100 Udine, Italy

Armstrong, R. D. and K. R. Helyar (1993). Relative importance of soil phosphorus to the growth of wiregrass (Aristida armata) compared with other grasses common to the mulga shrublands of Queensland. Australian Journal of Experimental Agriculture 33(3): 337-341. {a} Queensland Dep. Primary Industries, LMB 6, Emerald, Qld 4720, Australia

Leys, A. R. and B. Plater (1993). Simazine mixtures for control of annual grasses in pastures. Australian Journal of Experimental Agriculture 33(3): 319-326. {a} NSW Agric., Locked Bag 21, Orange, NSW 2650, Australia

Lee, C. K., H. A. Eagles, et al. (1993). Genetic variation within white clover (Trifolium repens L.) populations from north-central Victoria. Australian Journal of Experimental Agriculture 33(3): 333-336. {a} Dep. Agric., Pastoral and Vet. Inst., Private Bag 105, Hamilton, Vic. 3300, Australia

Ito, M., H. Kuwakino, et al. (1993). Relationship between the development of dormant tiller buds and the successive and internode formation of mother shoots in reed canarygrass (Phalaris arundinacea L.) grown under a sward condition. Journal of Japanese Society of Grassland Science 38(4): 469-477. Fac. Agric., Niigata Univ., 8050, Igarashi-2, Niigata-shi, Japan

Takahashi, Y., I. Otani, et al. (1993). Studies on allelopathic interactions among some grassland species: IV. Observation of the allelopathic interaction between Lolium perenne L. and Trifolium repens L. grown in soil culture. Journal of Japanese Society of Grassland Science 38(4): 478-486. {a} Chugoku Natl. Agric. Exp. Station, Oda, Shimane 694, Japan

Meredith, R. H. and I. B. Warboys (1993). Accelerated drying of cut lucerne (Medicago sativa L.) by chemical treatments based on inorganic potassium salts of alkali metal carbonates. Grass and Forage Science 48(2): 126-135. {a} Wye Coll., Univ. London, Ashford, Kent TN25 5AH, UK

Williams, E. D. and M. J. Hayes (1993). Growth and colonization of a range of white clover cultivars strip-seeded into an upland perennial ryegrass sward. Grass and Forage Science 48(2): 136-145. {a} AFRC Inst. Grassland Environ. Res., Welsh Plant Breeding Station, Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Arvy, M. P. (1993). Selenate and selenite uptake and translocation in bean plants (Phaseolus vulgaris). Journal of Experimental Botany 44(263): 1083-1087. 6, rue de Moncontour, 37300 Joue-les-Tours, France

McNeill, A. M., M. Wood, et al. (1993). The use of a closed system flow-through enclosure apparatus for studying the effects of partial pressure of dinitrogen in the atmosphere on growth of Trifolium repens L. and Lolium perenne L. Journal of Experimental Botany 44(263): 1021-1028. {a} Dep. Soil Science, Univ. Reading, London Road, Reading, Berks. RG1 5AQ, UK

Mengel, K. and K. Uhlenbecker (1993). Determination of available interlayer potassium and its uptake by ryegrass. Soil Science Society of America Journal 57(3): 761-766. {a} Inst. Plant Nutrition, Justus-Liebig-Univ., Sudanlage 6, 6300 Giessen, Germany

Nizhko, V. F., M. P. Shinkarenko, et al. (1992). Protein concentrate production from biomass contaminated with radionuclides. Fiziologiya i Biokhimiya Kul'turnykh Rastenii 24(6): 599-603. {a} Inst. Physiol. Plant Genet., Acad. Sci. Ukr., Kiev, Ukraine

Den, D. K. C. and J. M. H. Knops (1993). The effect of competition and slope inclination on aboveground biomass allocation of understorey ferns in subtropical forest. Oikos 67(2): 285-290. {a} Dep. Plant Ecol. Evol. Biol., Univ. Utrecht, P.O. Box 80084, NL-3508 TB Utrecht, Netherlands

Thompson, L. (1993). The influence of natural canopy density on the growth of white clover, Trifolium repens. Oikos 67(2): 321-324. NERC Cent. Population Biol., Imperial Coll., Silwood Park, Ascot, Berks, UK SL5 7PY

Kabuga, J. D. (1993). The standing behaviour of N'dama cattle during idling in a night paddock. Applied Animal Behaviour Science 37(1): 17-29. Dep. Anim. Sci., Univ. Sci. and Technol., Kumasi, Ghana

Zhang, X., A. G. Campbell, et al. (1993). Newsprint pulp and paper sludge as a soil additive/amendment for alfalfa and bluegrass: Greenhouse study. Communications in Soil Science and Plant Analysis 24(11-12): 1371-1388. {a} Dep. Forest Products, Univ. Idaho, Moscow, ID 83843, USA

Kong, T., D. L. Robinson, et al. (1993). Soil nitrogen and carbon status following clover production in Louisiana. Communications in Soil Science and Plant Analysis 24(11-12): 1345-1357. Agron. Dep., La. Agric. Exp. Station, LSU Agric. Cent., Baton Rouge, La. 70803, USA

Howieson, J. G., A. D. Robson, et al. (1993). External phosphate and calcium concentrations, and pH, but not the products of rhizobial nodulation genes, affect the attachment of Rhizobium meliloti to roots of annual medics. Soil Biology and Biochemistry 25(5): 567-573. {a} Soil Sci. and Plant Nutrition, Sch. Agric., Univ. Western Aust., Nedlands, WA 6009, Australia

Angle, J. S., S. P. McGrath, et al. (1993). Inoculation effects on legumes grown in soil previously treated with sewage sludge. Soil Biology and Biochemistry 25(5): 575-580. {a} Dep. Agron., Univ. Md., College Park, MD 20742, USA

Arthur, M. A. and T. J. Fahey (1993). Throughfall chemistry in an Engelmann spruce-subalpine fir forest in north central Colorado. Canadian Journal of Forest Research 23(4): 738-742. {a} Dep. Forest., Univ. Kentucky, Lexington, KY 40546, USA

Heagle, A. S., J. E. Miller, et al. (1993). Effects of ozone and carbon dioxide mixtures on two clones of white clover. New Phytologist 123(4): 751-762. {a} USDA-ARS, Dep. Plant Pathol., N.C. State Univ., Raleigh, NC 27695

Hilligardt, M. (1993). Strategies of persistence and reproduction in Trifolium pallescens Schreb. and Trifolium thalii Vill.: I. Studies in growth forms and community ecology. Flora Jena 188(1): 93-116. Wolfbergallee 53, D-7530 Pforzheim, Germany

Panjaitan, M. u., W. W. Stuer, et al. (1993). Growth of forage tree legumes at four agro-climatic sites in Indonesia. Journal of Agricultural Science 120(3): 311-317. {a} Dep. Agronomy Soil Sci., Univ. New England, Armidale, NSW 2351, Australia

Brock, J. L. and R. H. Fletcher (1993). Morphology of perennial ryegrass (Lolium perenne) plants in pastures under intensive sheep grazing. Journal of Agricultural Science 120(3): 301-310. Ag Research, Grasslands Research Centre, Palmerston North, New Zealand

Stevens, D. R., J. A. Lancashire, et al. (1993). Introduction, production, and persistence of five grass species in dry hill country: 1. Introduction, site descriptions, and general methods. New Zealand Journal of Agricultural Research 36(1): 1-10. {a} AgRes., Gore Res. Centre, Private Bag 50022, Gore, N.Z

Stevens, D. R. and J. D. Turner (1993). Introduction, production, and persistence of five grass species in dry hill country: 2. Fairplace, Southland, New Zealand. New Zealand Journal of Agricultural Research 36(1): 11-17. AgRes., Gore Res. Cent., Private Bag 50022, Gore, N.Z

Barker, D. J., J. A. Lancashire, et al. (1993). Introduction, production, and persistence of five grass species in dry hill country: 8. Summary and conclusions. New Zealand Journal of Agricultural Research 36(1): 61-66. {a} AgRes., Grasslands Res. Centre, Private Bag 11008, Palmerston North, N.Z

Barker, D. J. and N. Dymock (1993). Effects of pre-sowing herbicide and subsequent sward mass on survival, development, and production of autumn oversown Wana cocksfoot and Tahora white clover seedlings. New Zealand Journal of Agricultural Research 36(1): 67-77. AgRes., Grasslands Res. Cent., Private Bag 11008, Palmerston North, N.Z

Caradus, J. R., J. Dunlop, et al. (1993). Nitrogen and phosphorus concentrations of white clover genotypes differing in response to added phosphorus. New Zealand Journal of Agricultural Research 36(1): 79-86. AgRes., Grassland Res. Centre, Private Bag 11008, Palmerston North, N.Z

Chapman, D. F., A. D. Mackay, et al. (1993). Effects of cultivar introduction and fertilizer on characteristics of white clover Trifolium repens L.) plants and populations in a hill pasture. New Zealand Journal of Agricultural Research 36(1): 87-98. AgRes., Grasslands Res. Cent., Private Bag 11008, Palmerston North, N.Z

Crush, J. R. and J. R. Caradus (1993). Effect of different aluminium and phosphorus levels on aluminium-tolerant and aluminium-susceptible genotypes of white clover (Trifolium repens L.). New Zealand Journal of Agricultural Research 36(1): 99-107. {a} AgRes., Ruakura Agric. Centre, Private Bag 3123, Hamilton, N.Z

Jeremie, J. and B. Jeune Vegetation of the stagnant aquatic environments of the Lesser Antilles and relationship between mineralization and distribution of macrophytes. Bulletin du Museum National d'Histoire Naturelle Section B Adansonia Botanique Phytochimie 14(2): 297-330. {a} Lab. de Phanerogamie, Museum natl. d'Histoire naturelle, 16 rue Buffon, 75005 Paris, France

Tillmann, P. (1993). The elasticity in utilizing grassland swards differing in botanical composition. Wirtschaftseigene Futter 38(3): 217-232. Inst. Pflanzenbau und Gruenland, Lehrstuhl Gruenlandlehre, Univ. Hohenheim, Postfach 700562, 7000 Stuttgart 70

Pasumarty, S. V., T. Matsumura, et al. Cultivar variation for seed development in white clover (Trifolium repens L.). Euphytica 65(3): 211-217. {a} Tohoku Natl. Agric. Experiment Station, Shimo-kuriyagawa, Morioka, Iwate 020-01, Japan

Gourley, C. J. P., D. L. Allan, et al. (1993). Differences in response to available phosphorus among white clover cultivars. Agronomy Journal 85(2): 296-301. {a} Ellinbank Diary Res. Inst., Victorian Dep. Agric., Warragul South, Victoria 3020, Australia

Vishnyakova, M. A. Callose as an indicator of sterile ovules. Phytomorphology 41(3-4): 245-252. N. I. Vavilov Inst. Plant Industry, 44 Herzen Str., 190000, St.-Petersburg, Russia

Nelson, S. C. and C. L. Campbell (1993). Disease progress, defoliation, and spatial pattern in a multiple-pathogen disease complex on white clover. Phytopathology 83(4): 419-429. {a} Univ. Hawaii, Dep. Plant Pathol., 3190 Maile Way, St. John 313, Honolulu 96822, USA

Chen, H., E. Gartner, et al. (1993). Involvement of genes on a megaplasmid in the acid-tolerant phenotype of Rhizobium leguminosarum biovar trifolii. Applied and Environmental Microbiology 59(4): 1058-1064. {a} Plant-Microbe Interact. Group, Res. Sch. Biol. Sci., Aust. Natl. Univ., GPO Box 475, Canberra City, ACT 2601, Australia

Kanai, H., T. Nishikawa, et al. (1992). Distribution of popular plants in north Hokkaido, north Japan. Memoirs of the National Science Museum Tokyo(25): 77-86. {a} Dep. Botany, Natl. Sci. Museum, Tokyo, Japan

Fraser, J. and H. T. Kunelius (1993). Influence of seeding time on the yield of white clover/orchardgrass mixtures in Atlantic Canada. Journal of Agricultural Science 120(2): 197-203. {a} Agric. Canada Res. Station, PO Box 3000, Main, Lethbridge, AB T1J 4B1, Canada

Turkington, R., E. Klein, et al. (1993). Interactive effects of nutrients and disturbance: An experimental test of plant strategy theory. Ecology Washington D C 74(3): 863-878. {a} Dep. Bot., Univ. B.C., Vancouver, B.C. V6T 1Z4, Canada

Rogers, M. E., C. L. Noble, et al. (1993). Variation in yield potential and salt tolerance of selected cultivars and natural populations of Trifolium repens L. Australian Journal of Agricultural Research 44(4): 785-798. {a} Inst. Sustainable Agric., Dep. Agric., Private Bag, Ferguson Road, Tatura, Victoria 3616

Pasumarty, S. V., T. Matsumura, et al. (1993). Causes of low seed set in white clover (Trifolium repens L.). Grass and Forage Science 48(1): 79-83. {a} Tohoku Natl. Agric. Exp. Stn., Ministry Agric., Forestry Fisheries, Shimo-Kuriyagawa, Morioka, Iwate 020-01, Japan

Obbard, J. P., D. R. Sauerbeck, et al. (1993). Rhizobium leguminosarum bv. trifolii in soils amended with heavy metal contaminated sewage sludges. Soil Biology and Biochemistry 25(2): 227-231. {a} Inst. Environmenatl and Biological Sci., Lancaster Univ., Lancaster LA1 5YQ, England

Nelson, S. C. and C. L. Campbell (1993). Comparative spatial analysis of foliar epidemics on white clover caused by viruses, fungi, and a bacterium. Phytopathology 83(3): 288-301. {a} Dep. Plant Pathology, Univ. Hawaii, 3190 Maile Way, St. John 313, Honolulu, HI 96822, USA

Roderick, H. W. (1993). The infection of white clover (Trifolium repens) by conidia of Cymadothea trifolii. Mycological Research 97(2): 227-232. AFRC Inst. Grassland Environmental Res., Welsh Plant Breeeding Station, Plas Gogerddan, Aberystwyth SY23 3EB, UK

Murray, P. J. and R. O. Clements (1992). A technique for assessing damage to roots of white clover caused by root feeding insects. Annals of Applied Biology 121(3): 715-719. AFRC Inst. Grassland Environmental Res., North Wyke Res. Station, Okehampton, Devon EX20 2SB, UK

Staley, T. E., R. J. Wright, et al. (1993). Perennial forage legume growth in acidic soils for the major series of the Appalachian hill-lands. Journal of Plant Nutrition 16(4): 573-587. {a} USDA, ARS, NAA, Appalachian Soil Water Conservation Res. Lab., P.O. Box 867, Beckley, WV 25802-0867

Mehanni, A. H. and D. W. West (1992). Effect of nitrogen fertiliser on yield of perennial pastures irrigated with saline water. Australian Journal of Experimental Agriculture 32(8): 1087-1093. Dep. Agric., Inst. Sustainable Agric., Tatura, Victoria 3616, Australia

Cardadus, J. R., M. J. M. Hay, et al. (1993). Variation within white clover (Trifolium repens L.) for phenotypic plasticity of morphological and yield related characters, induced by phosphorus supply. New Phytologist 123(1): 175-184. N.Z. Pastoral Agriculture Res. Inst. Ltd., Palmerston North, New Zealand

Tolley, S. P., T. E. Barrett, et al. (1993). Crystallization of preliminary crystallographic analysis of the cyanogenic beta-glucosidase from the white clover Trifolium repens L. Journal of Molecular Biology 229(3): 791-793. {a} Dep. Chem., Univ. York, York YO1 5DD, UK

Salzwedel, J. L. and F. B. Dazzo (1993). PSym nod gene influence on elicitation of peroxidase activity from white clover and pea roots by rhizobia and their cell-free supernatants. Molecular Plant Microbe Interactions 6(1): 127-134. {a} Dep. Microbiol., Mich. State Univ., East Lansing, Mich. 48824, USA

Davis, M. R. and M. H. Lang (1991). Increased nutrient availability in topsoils under conifers in the South Island high country. New Zealand Journal of Forestry Science 21(2-3): 165-179. Forest Res. Inst., P.O. Box 31-011, Christchurch, New Zealand

Weissinger, A. K. I. and W. A. Parrott (1993). Repetitive somatic embryogenesis and plant recovery in white clover. Plant Cell Reports 12(3): 125-128. {a} Dep. Agron. Univ. Ga., Athens, GA 30602-7272, USA

Salvatore, C. and A. Laura (1992). Life cycle of a cyst forming nematode reared in greenhouse on Dianthus caryophyllus and Trifolium repens. Redia 75(1): 137-155. Istituto Sperimentale Zoologia Agraria, Firenze, Italy

Stampfli, A. (1992). Year-to-year changes in unfertilized meadows of great species richness detected by point quadrat analysis. Vegetatio 103(2): 125-132. Systematisch-Geobotanisches Inst., Univ. Bern, Altenbergrain 21, CH-3013 Bern, Switzerland

George, E., K. U. Haeussler, et al. (1992). Water and nutrient translocation by hyphae of Glomus mosseae. Canadian Journal of Botany 70(11): 2130-2137. {a} Inst. Plant Nutrition, Hohenheim Univ., P.O. Box 700562, 7000 Stuttgart 70, Germany

Wardle, D. A., K. S. Nicholson, et al. (1993). Influence of plant age on the allelopathic potential of nodding thistle (Carduus nutans L.) against pasture grasses and legumes. Weed Research 33(1): 69-78. Ruakura Agric. Centre, Ministry Agric. Fisheries, Private Bag, Hamilton, New Zealand

King, L. D. and P. R. Ball (1992). Denitrification in a white clover sward killed by ploughing, rotary hoeing, shallow tillage, or with a herbicide. New Zealand Journal of Agricultural Research 35(4): 441-450. {a} Dep. Soil Sci., N.C. State Univ., Raleigh, NC, USA

Dodd, M. B., S. J. Orr, et al. (1992). Soil aluminium, phosphate, and moisture interactions affecting the growth of four white clover (Trifolium repens L.) lines. New Zealand Journal of Agricultural Research 35(4): 411-421. AgRes., Whatawhata Res. Cent., Private Bag 3089, Hamilton, New Zealand

Blaikie, S. J. and W. K. Mason (1993). Restrictions to root growth limit the yield of shoots of irrigated white clover. Australian Journal of Agricultural Research 44(1): 121-135. {a} Dep. Agric., Kyabram Center, Inst. Sustainable Agriculture, RMB 3010, Kyabram 3620

Power, J. F. and J. A. Zachariassen (1993). Relative nitrogen utilization by legume cover crop species at three soil temperatures. Agronomy Journal 85(1): 134-140. {a} USDA-ARS, Keim Hall, East Campus, Univ. Nebraska-Lincoln, Lincoln, NE 68583

Fitter, A. H. and T. R. Stickland (1992). Fractal characterization of root system architecture. Functional Ecology 6(6): 632-635. {a} Dep. Biol., Univ. York, York YO1 5DD, UK

Gu, H. and W. Danthanarayana (1992). Influence of larval rearing conditions on the body size and flight capacity of Epiphyas postvittana moths. Australian Journal of Zoology 40(6): 573-581. {a} Dep. Zool., Univ. New England, Armidale, N.S.W. 2351, Australia

Collins, J. L. and T. F. Wieboldt (1992). Trifolium calcaricum, new species (Fabaceae), a new clover from limestone barrens of eastern United States. Castanea 57(4): 282-286. {a} TVA Nat. Heritage Program, Norris, Tenn. 37828

Laws, J. A. and J. E. Newton (1992). The grazing management of sheep on grass-white clover permanent pasture. Irish Journal of Agricultural and Food Research 31(2): 143-156. AFRC Inst. Grassland Environmental Res., North Wyke, Okehampton, Devon EX20 2SB

Kunelius, H. T. and P. R. Narasimhalu (1992). Effect of autumn harvest date on herbage yield and composition of grasses and white clover. Field Crops Research 31(3-4): 341-349. {a} Res. Stn., Agric. Canada, Charlottetown, Prince Edward Island C1A 7M8, Canada

Hart, A. L. and W. A. Collier (1992). Nutrient efficiency and cellular contents of phosphorus and nitrogen in Trifolium repens and a diploid and tetraploid Lotus uliginosus. Grass and Forage Science 47(4): 375-381. {a} AgRes. Grasslands, Private Bag 11008, Palmerston North, N.Z

Jones, L. (1992). Preliminary trials using a white clover (Trifolium repens L.) understory to supply the nitrogen requirements of a cereal crop. Grass and Forage Science 47(4): 366-374. AFRC Inst. Grassland Environ. Res., North Wyke Res. Stn., Okehampton, Devon EX20 2SB, UK

Obbard, J. P. and K. C. Jones (1993). The effect of heavy metals on dinitrogen fixation by Rhizobium white clover in a range of long-term sewage sludge amended and metal-contaminated soils. Environmental Pollution 79(2): 105-112. Inst. Environmental Biol. Sci., Lancaster Univ., Lancaster LA1 4YQ, UK

O, D. T. E. and J. M. Trappe (1992). Root endophytes of lupin and some other legumes in northwestern USA. New Phytologist 122(3): 479-485. {a} Dep. Botany, KB-15, Univ. Washington, Seattle, Wash. 98195

Newton, P. C. D., M. J. Hay, et al. (1992). Viability of axillary buds of white clover (Trifolium repens) in grazed pasture. Journal of Agricultural Science 119(3): 345-354. {a} MAF Technol., Flock House Agric. Cent., Private Bag, Bulls, N.Z

Cuttle, S. P., M. Hallard, et al. (1992). Nitrate leaching from sheep-grazed grass/clover and fertilized grass pastures. Journal of Agricultural Science 119(3): 335-343. {a} AFRC Inst. Grassl. Environ. Res., Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Devlin, W. S. and D. L. Gustine (1992). Involvement of the oxidative burst in phytoalexin accumulation and the hypersensitive reaction. Plant Physiology Rockville 100(3): 1189-1195. {a} Dep. Agronomy Graduate Program of Plant Physiology, Pennsylvania State Univ., University Park, Pa. 16802

Zarnstorff, M. E., D. S. Chamblee, et al. (1992). Autumn sward suppression and insect control effects on late-winter no-till establishment of ladino clover. Agronomy Journal 84(6): 983-987. {a} Dep. Crop Sci., North Carolina State Univ., Raleigh, NC 27695-7620

Ellsbury, M. M., G. A. Pederson, et al. (1992). Resistance to foliar-feeding hyperine weevils (Coleoptera: Curculionidae) in cyanogenic white clover. Journal of Economic Entomology 85(6): 2467-2472. {a} Northern Grain Insects Res. Lab., NPA, USDA-ARS, R. R. 3, Brookings, SD 57006

Bitkus, A. A. and A. Y. Panamarevene (1991). Content of "raw protein", "pure protein", lysine and tryptophan in 11 Trifolium species grown in Lithuania. Rastitel'nye Resursy 27(4): 95-99. Inst. Bot., Acad. Sci. Lith., Vilnius, Lithuania

Niedzwiedz, S. I. and S. Lewak (1992). Involvement of a high irradiance response in photoinhibition of white clover seed germination at low water potential. Physiologia Plantarum 86(2): 293-296. {a} Inst. Botany, Warsaw Univ., Krakowskie Przedmiescie 26/28, Pl 00-927 Warszawa, Poland

Denes, A. S. and R. C. Sinha (1992). Alteration of clover phyllody mycoplasma DNA after in vitro culturing of phyllody-diseased clover. Canadian Journal of Plant Pathology 14(3): 189-196. {a} Animal Dis. Res. Inst, Agric. Canada, Nepean, P.O. Box 11300, Station H, Nepean, Ont. K2H 8P9, Canada

Kodama, A. (1992). Early cytological events in the infection of the root hairs of Trifolium repens by Rhizobium leguminosarum biovar trifolii observed by glass slide culture in living seedlings. Botanical Magazine Tokyo 105(1079): 421-429. Dep. Bioresource Dev., Hiroshima Prefectural Univ., Shobara, Hiroshima 727, Japan

Cruickshank, G. J., D. P. Poppi, et al. (1992). The intake, digestion and protein degradation of grazed herbage by early-weaned lambs. British Journal of Nutrition 68(2): 349-364. {a} Dep. Agric., Univ. Queensl., Queensl. 4072, Australia

Ourcival, J. M., M. Methy, et al. (1992). Determination by chlorophyll fluorescence of the genotypic variability of response to water stress in white clover (Trifolium repens) and rye grass (Lolium perenne). Canadian Journal of Botany 70(8): 1556-1562. {a} Centre Ecologie Fonctionnelle Evolutive, B.P. 5051, 34 033 Montpellier Cedex, France

Kiso, S., K. Kikuchi, et al. (1992). Changes of dry matter yield and botanical composition in timothy (Phleum pratense L.) late variety "Hokushu" legumes mixtures. Journal of Japanese Society of Grassland Science 38(1): 71-79. {a} Hokkaido Central Agric. Exp. Stn., Naganuma, Yubari-gun, Hokkaido 069-13, Japan

Sugawara, K. and S. H. Duke (1992). The effects of low pH growth medium on nodulation and nitrogen fixation of alfalfa (Medicago sativa L.) and white clover (Trifolium repens L.). Journal of Japanese Society of Grassland Science 38(1): 53-62. {a} Grassland Res. Lab., Tohoku Univ., Kawatabi, Narugo, Miyagi 989-67, Japan

Okuda, S., M. Hasegawa, et al. (1992). Clover yellow vein virus isolated from bean (Phaseolus vulgaris) showing vine necrosis in Fukushima Prefecture. Annals of the Phytopathological Society of Japan 58(2): 298-304. {a} Fac. Agric., Utsunomiya Univ., 350 Mine-machi, Utsunomiya 321, Japan

Koberstaedt, A., M. Lenz, et al. (1992). Isolation, sequencing and expression in Escherichia coli of the urocanase gene from white clover (Trifolium repens). FEBS Federation of European Biochemical Societies Letters 311(3): 206-208. {a} Lehrstuhl Biochemie, Inst. Organische Chemie, Univ. Karlsruhe, Postfach 6980, D-W-7500 Karlsruhe 1, Germany

Pederson, G. A. and G. L. Windham (1992). Diallel analysis of resistance in white clover to southern root-knot nematode. Crop Science 32(5): 1160-1162. {a} USDA-ARS, Crop Sci. Res. Lab., Forage Res. Unit, P.O. Box 5367, Mississippi State, Miss. 39762

Forster, R. L. S., D. L. Beck, et al. (1992). The coat protein of white clover mosaic potexvirus has a role in facilitating cell-to-cell transport in plants. Virology 191(1): 480-484. {a} Plant Improvement Div., Horticulture Food Res. Inst. New Zealand Ltd., Private Bag 92 169, Auckland, New Zealand

Takahashi, Y., Y. Fujii, et al. (1992). Studies on allelopathic interactions among some grassland species: III. Isolation and identification of phenolic compounds in the shoot of Lolium perenne L. Journal of Japanese Society of Grassland Science 38(2): 226-233. {a} Chugoku Natl. Agric. Exp. Station, Oda, Shimane 694, Japan

Luescher, A., J. Connolly, et al. (1992). Neighbour specificity between Lolium perenne and Trifolium repens from a natural pasture. Oecologia Heidelberg 91(3): 404-409. {a} Eidgenoessiche Technische Hochschule, Inst. Pflanzenwissenschaften, ETH-Zentrum, 8092 Zurich, Switzerland

Williams, P. H. and R. J. Haynes (1992). Transformations and plant uptake of urine-sulphate in urine-affected areas of pasture soil. Plant and Soil 145(2): 167-175. MAF Technol., Canterbury Agric. Sci. Cent., P.O. Box 24, Lincoln, Canterbury, N.Z

Terrill, T. H., G. B. Douglas, et al. (1992). Effect of condensed tannins upon body growth, wool growth and rumen metabolism in sheep grazing sulla (Hedysarum coronarium) and perennial pasture. Journal of Agricultural Science 119(2): 265-273. {a} Massy Univ., Palmerston North, New Zealand

Ison, R. L. and A. E. B. Parson (1992). Comparative growth and development of Kenya clover (Trifolium semipilosum) and white clover (Trifolium repens cv. Haifa): II. Temperature and daylength effects on flowering. Tropical Grasslands 26(1): 51-57. {a} Sch. Crop Sci., Univ. Sydney, Sydney NSW 2006

Ison, R. L., A. E. B. Parson, et al. (1992). Comparative growth and development of Kenya clover (Trifolium semipilosum) and white clover (Trifolium repens cv. Haifa): Seedling and plant growth. Tropical Grasslands 26(1): 40-50. {a} Sch. Crop Sci., Univ. Sydney, NSW 2006

Newton, P. C. D. and M. J. M. Hay (1992). Technique for evaluating the potential for growth of shoot and root buds of white clover (Trifolium repens). Journal of Agricultural Science 119(2): 179-183. {a} MAF Technol., Flock House, Bulls, New Zealand

Chapman, D. F. and M. J. Robson (1992). The physiological role of old stolon material in white clover (Trifolium repens L.). New Phytologist 122(1): 53-62. {a} Ag Res. Grasslands Res. Centre, Private Bag 11008, Palmerston North, New Zealand

Lewis, G. C. (1992). Effect of ryegrass endophyte in mixed swards of perennial ryegrass and white clover under two levels of irrigation and pesticide treatment. Grass and Forage Science 47(3): 302-305. AFRC Inst. Grassland Environ. Res., North Wyke, Okehampton, Devon EX20 2SB, UK

Holecy, B. and M. Bartko (1991). Intensification of temporary grassland by supplementary sowing of clover crops in mountainous regions. Vedecke Prace Vyskumneho Ustavu Luk a Pasienkov v Banskej Bystrici(21): 187, 189-196.

Javorkova, A. and J. Javorka (1991). Study of sloped grassland intensification possibilities. Vedecke Prace Vyskumneho Ustavu Luk a Pasienkov v Banskej Bystrici(21): 163, 165-174.

Morhac, P. (1991). The effect of nutrition on crude protein production and concentration in temporary grassland. Vedecke Prace Vyskumneho Ustavu Luk a Pasienkov v Banskej Bystrici(21): 143, 145-152.

Nelson, S. C. and C. L. Campbell (1013). Incidence and patterns of association of pathogens in a leaf spot disease complex on white clover in the Piedmont region of North Carolina. Phytopathology 82(10): 1013-1021.

Flueeler, R. P. (1992). Experimental studies on the germinating behaviour and early developmental phases of alpine Leguminosae. Veroeffentlichungen Des Geobotanischen Institutes Der Eidgenoessische Technische Hochschule Stiftung Ruebel In Zuerich(110): 1-149.

Coffey, K. P., J. L. Moyer, et al. (1992). Implant and copper oxide needles for steers grazing Acremonium coenophialum infected tall fescue pastures: Effects on grazing and subsequent feedlot performance and serum constituents. Journal Of Animal Science 70(10): 3203-3214.

Ryle, G. J. A., C. E. Powell, et al. (1992). Growth of white clover, dependent on nitrogen fixation, in elevated carbon dioxide and temperature. Annals Of Botany 70(3): 221-228.

Ryle, G. J. A., J. Woledge, et al. (1992). Influence of elevated carbon dioxide and temperature on the photosynthesis and respiration of white clover dependent on nitrogen fixation. Annals Of Botany 70(3): 213-220.

Salt, C. A., R. W. Mayes, et al. (1992). Effects of season, grazing intensity and diet composition on the radiocaesium intake by sheep on re-seeded hill pasture. Journal Of Applied Ecology 29(2): 378-387.

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Gange, A. C., V. K. Brown, et al. (1992). Effects of pesticides on the germination of weed seeds: Implications for manipulative experiments. Journal Of Applied Ecology 29(2): 303-310.

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Pokharel, N. P. (1991). Study on changes in the concentration of amino acids in the clover plants infected with Meloidogyne incognita. Indian Journal Of Mycology And Plant Pathology 21(3): 215-219.

Culleton, N. and T. Cullen (1992). Trends in herbage seed use in Ireland. Plant Varieties & Seeds 5(2): 63-69.

Arvy, M. P. (1397). Some aspects of selenium relationships in soils and plants. Communications In Soil Science And Plant Analysis 23(13-14): 1397-1407.

Smith, S. R. and K. E. Giller (1992). Effective Rhizobium leguminosarum biovar trifolii present in five soils contaminated with heavy metals from long-term applications of sewage sludge or metal mine spoil. Soil Biology And Biochemistry 24(8): 781-788.

Nguyen, M. L. and K. M. Goh (1992). Nutrient cycling and losses based on a mass-balance model in grazed pastures receiving long-term superphosphate applications in New Zealand: 2. Sulphur. Journal Of Agricultural Science 119(1): 107-122.

Nguyen, M. L. and K. M. Goh (1992). Nutrient cycling and losses based on a mass-balance model in grazed pastures receiving long-term superphosphate applications in New Zealand: 1. Phosphorus. Journal Of Agricultural Science 119(1): 89-106.

Mercer, C. F., B. M. Cooper, et al. (1992). Selection for resistance and tolerance of white clover to root-knot (Meloidogyne hapla) and clover cyst (Heterodera trifolii) nematodes. New Zealand Journal Of Agricultural Research 35(2): 218-224.

Crailsheim, K., L. H. W. Schneider, et al. (1992). Pollen consumption and utilization in worker honeybees (Apis mellifera carnica): Dependence on individual age and function. Journal Of Insect Physiology 38(6): 409-419.

Fitter, A. H. and T. R. Stickland (1992). Architectural analysis of plant root systems: III. Studies on plants under field conditions. New Phytologist 121(2): 243-248.

Chapman, D. F., M. J. Robson, et al. (1992). The growth and carbon allocation patterns of white clover (Trifolium repens L.) plants of contrasting branching structure. Annals Of Botany 69(6): 523-531.

Davies, A. and D. R. Jones (1992). The production of leaves and stolon branches on established white clover cuttings in relation to temperature and soil moisture in the field. Annals Of Botany 69(6): 515-521.

Prestidge, R. A., E. R. Thom, et al. (1992). Influence of Acremonium lolii infection in perennial ryegrass on germination, emergence, survival, and growth of white clover. New Zealand Journal Of Agricultural Research 35(2): 225-234.

Chan, J. W. Y. and R. S. Burton (1992). Variation in alcohol dehydrogenase activity and flood tolerance in white clover, Trifolium repens. Evolution 46(3): 721-734.

Barrett, J. P. and J. A. J. Silander (1992). Seedling recruitment limitation in white clover (Trifolium repens; Leguminosae). American Journal Of Botany 79(6): 643-649.

Hill, M. O., D. F. Evans, et al. (1992). Long-term effects of excluding sheep from hill pastures in North Wales. Journal Of Ecology 80(1): 1-13.

Coffey, K. P., J. L. Moyer, et al. (1992). Amount and diurnal distribution of grazing time by stocker cattle under different tall fescue management strategies. Applied Animal Behaviour Science 33(2-3): 121-135.

Ryle, G. J. A. and C. E. Powell (1992). The influence of elevated carbon dioxide and temperature on biomass production of continuously defoliated white clover. Plant Cell And Environment 15(5): 593-599.

Marriott, C. A. and A. Haystead (1992). The effect of lenient defoliation on the nitrogen economy of white clover: The contribution to mineral nitrogen to plant nitrogen accumulation during regrowth. Annals Of Botany 69(5): 429-435.

Windham, G. L. and G. A. Pederson (1992). Comparison of reproduction by Meloidogyne graminicola and Meloidogyne incognita on Trifolium spp. Journal Of Nematology 24(2): 257-261.

Panetta, F. D. and D. A. Wardle (1992). Gap size and regeneration in a New Zealand dairy pasture. Australian Journal Of Ecology 17(2): 169-175.

Kohno, A. and T. Nanmori (1077). Changes in alpha- and beta-amylase activities during seed germination of clover (Trifolium repens). Botanical Magazine Tokyo 105(1077): 167-170.

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Edmunds, L. N. J., I. A. Carre, et al. (1992). The role of ions and second messengers in circadian clock function. Chronobiology International 9(3): 180-200.

Morton, J. D., G. R. Bolton, et al. (1992). The comparative performance of Holcus lanatus and Lolium perenne under sheep grazing in the Scottish uplands. Grass And Forage Science 47(2): 143-152.

Banszki, T. (1991). The effect of mowing-frequency, nitrogen-quantity and watering on irrigated stands. Acta Agronomica Hungarica 40(3-4): 397-407.

Banszki, T. (1991). Effect of nitrogen-distribution on intensively planted hayfields. Acta Agronomica Hungarica 40(3-4): 383-396.

Kakes, P. and H. Hakvoort (1501). Is there rhodanese activity in plants? Phytochemistry 31(5): 1501-1505.

Leduc, N., G. C. Douglas, et al. (1992). Methods for non-stigmatic pollination in Trifolium repens (Papilionaceae): Seed set with self- and cross-pollinations in vitro. Theoretical And Applied Genetics 83(6-7): 912-918.

Macduff, J. H. and S. B. Jackson (1992). Influx and efflux of nitrate and ammonium in Italian ryegrass and white clover roots: Comparisons between effects of darkness and defoliation. Journal Of Experimental Botany 43(249): 525-535.

Wu, L. and Z. Z. Huang (1992). Selenium assimilation and nutrient element uptake in white clover and tall fescue under the influence of sulphate concentration and selenium tolerance of the plants. Journal Of Experimental Botany 43(249): 549-555.

Barratt, B. I. P. and R. A. Byres (1992). Legume seedling feeding preferences of adult Sitona hispidulus (F.) (Coleoptera: Curculionidae). Environmental Entomology 21(1): 103-106.

Allan, B. E., K. F. O'Connor, et al. (1992). Grazing management of oversown tussock country: 2. Effects of botanical composition. New Zealand Journal Of Agricultural Research 35(1): 7-19.

Evans, D. R., T. A. Williams, et al. (1992). Residual nitrogen effect of grazed white clover (Trifolium repens)/ryegrass (Lolium perenne) swards on subsequent yields of spring barley. Journal Of Agricultural Science 118(2): 175-178.

Sun, D. (1992). Trampling resistance, recovery and growth rate of eight plant species. Agriculture Ecosystems & Environment 38(4): 265-273.

Wardle, D. A., K. S. Nicholson, et al. (1992). Influence of pasture grass and legume swards on seedling emergence and growth of Carduus nutans L. and Cirsium vulgare L. Weed Research 32(2): 119-128.

Burton, G. W. and E. H. Devane (1992). Growing legumes with Coastal bermudagrass in the lower coastal plain. Journal Of Production Agriculture 5(2): 278-281.

Marshall, A. H., H. K. Khrbeet, et al. (1991). Influence of boron on the reproductive growth of white clover (Trifolium repens L.) cultivars. Annals Of Applied Biology 119(3): 541-548.

Chapman, D. F., M. J. Robson, et al. (1992). The carbon economy of clonal plants of Trifolium repens L. Journal Of Experimental Botany 43(248): 427-434.

Niedzwiedz, S. I. and S. Lewak (1992). Growth regulators differentially affect photosensitivity induced by low temperature and osmotic stresses in germinating white clover seeds. Plant Growth Regulation 11(2): 133-137.

Chapman, D. F., M. J. Robson, et al. (1992). Physiological integration in the clonal perennial herb Trifolium repens L. Oecologia 89(3): 338-347.

Kemp, D. R. and L. Guobin (1992). Winter temperatures and reproductive development affect the productivity and growth components of white clover and phalaris growing in a mixed pasture. Australian Journal Of Agricultural Research 43(3): 673-683.

Goubin, L. and D. R. Kemp (1992). Water stress affects the productivity, growth components, competitiveness and water relations of phalaris and white clover growing in a mixed pasture. Australian Journal Of Agricultural Research 43(3): 659-672.

Swift, G., M. W. Morrison, et al. (1992). Comparison of white clover varieties under cutting and grazing. Grass And Forage Science 47(1): 8-13.

Chaudri, A. M., S. P. McGrath, et al. (1992). Metal tolerance of isolates of Rhizobium leguminosarum biovar trifolii from soil contaminated by past applications of sewage sludge. Soil Biology And Biochemistry 24(2): 83-88.

Clint, G. M., A. F. Harrison, et al. (1992). Rates of leaching of cesium-137 and potassium from different plant litters. Journal Of Environmental Radioactivity 16(1): 65-76.

Cook, R., D. R. Evans, et al. (1992). The effect of stem nematode on establishment and early yields of white clover. Annals Of Applied Biology 120(1): 83-94.

Pires, A. L., J. L. Ahlrichs, et al. (1992). Response of eleven forage species to treatment of acid soil with calcitic and dolomitic lime. Communications In Soil Science And Plant Analysis 23(5-6): 541-558.

Bassetti, P., A. Luescher, et al. (1991). Influence of cutting frequency and nitrogen fertilization on floristic composition and sward density of a permanent meadow dominated by Lolium multiflorum. Wirtschaftseigene Futter 37(1-2): 258-267.

Williams, J. H. and T. W. Ashenden (1992). Differences in the spectral characteristics of white clover exposed to gaseous pollutants and acid mist. New Phytologist 120(1): 69-76.

Thompson, D. B. (1992). Consumption rates and the evolution of diet-induced plasticity in the head morphology of Melanoplus femurrubrum (Orthoptera: Acrididae). Oecologia 89(2): 204-213.

Karl, E., H. E. Schmidt, et al. (1992). Range of aphid vector species of the clover yellow vein potyvirus. Journal Of Phytopathology 134(2): 117-120.

Crothers, J. H. (1991). The Nettlecombe Grassland Experiment 1968-1990: Student investigations of continuity and change in a grassland sward. Field Studies 7(4): 687-717.

Heagle, A. S., M. R. McLaughlin, et al. (1992). Response of two white clover clones to peanut stunt virus and ozone. Phytopathology 82(3): 254-258.

Noitsakis, B. and P. Jacquard (1992). Competition between cyanogenic and acyanogenic morphs of Trifolium repens. Theoretical And Applied Genetics 83(4): 443-450.

Losvik, M. H. (1991). A hay meadow in western Norway: Changes in the course of a growing season. Nordic Journal Of Botany 11(5): 577-586.

Miles, N. and R. J. Eckard (1991). Lime-phosphorus interactions in the growth of temperate pasture species on highly-weathered soils. South African Journal Of Plant And Soil 8(4): 200-205.

Cresswell, A., A. J. Gordon, et al. (1992). The physiology and biochemistry of cultivar-strain interactions in the white clover-Rhizobium symbiosis. Plant And Soil 139(1): 47-58.

Salt, C. A. and R. W. Mayes (1991). Seasonal variations in radiocaesium uptake by reseeded hill pasture grazed at different intensities by sheep. Journal Of Applied Ecology 28(3): 947-962.

Lewis, G. C. (1991). Interactions between pesticide treatment, cutting frequency and rate of nitrogen fertilizer on white clover grown in mixture with perennial ryegrass. Grass And Forage Science 46(4): 399-404.

Allen, V. G., J. P. Fontenot, et al. (1992). Forage systems for beef production from conception to slaughter: I. Cow-calf production. Journal Of Animal Science 70(2): 576-587.

Marriott, C. and M. Smith (1992). Senescence and decomposition of white clover stolons in grazed upland grass/clover swards. Plant And Soil 139(2): 219-228.

Chapman, D. F., M. J. Robson, et al. (1992). Interactions between defoliation and the nitrogen nutrition of white clover (Trifolium repens L.): Effects on carbon utilization in clonal plants. Plant And Soil 139(2): 157-166.

Sugiyama, S. and H. Nakashima (1991). Effects of cultivars of tall fescue (Festuca arundinacea Schreb.) on the botanical composition of mixed swards. Grass And Forage Science 46(4): 365-374.

Jaindl, R. G., S. H. Sharrow, et al. (1991). Effect of winter grazing date on yield components of Lolium perenne (L.)-Trifolium repens (L.) hill pasture. Grass And Forage Science 46(4): 351-358.

Hampton, J. G. (1991). Effect of paclobutrazol on inflorescence production and seed yield in four white clover (Trifolium repens L.) cultivars. New Zealand Journal Of Agricultural Research 34(4): 367-374.

McLaughlin, M. R., G. A. Pederson, et al. (1992). Virus diseases and stand decline in a white clover pasture. Plant Disease 76(2): 158-162.

Pearson, W. D. (1991). Effect of meadow spittlebug and Australian crop mirid on whiteclover seed production in small cages. New Zealand Journal Of Agricultural Research 34(4): 439-444.

White, J. G. and T. W. Scott (1991). Effects of perennial forage-legume living mulches on no-till winter wheat and rye. Field Crops Research 28(1-2): 135-148.

Li, X. L., E. George, et al. (1991). Phosphorus depletion and pH decrease at the root-soil and hyphae-soil interfaces of VA mycorrhizal white clover fertilized with ammonium. New Phytologist 119(3): 397-404.

Svenning, M. M., O. Junttila, et al. (1991). Symbiotic growth of indigenous white clover (Trifolium repens) with local Rhizobium leguminosarum biovar trifolii. Physiologia Plantarum 83(3): 381-389.

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Becana, M. and J. I. Sprent (1989). Effect of nitrate on components of nodule leghemoglobins. Journal Of Experimental Botany 40(216): 725-732.

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Becker, K., M. Saurer, et al. (1989). Sensitivity of white clover to ambient ozone in Switzerland. New Phytologist 112(2): 235-244.

Espuny, M. R., F. J. Ollero, et al. (1989). Selection and symbiotic properties of Rhizobium leguminosarum biovar phaseoli strains harboring pRtr5a. Current Microbiology 19(3): 179-182.

Cooper, B. M. (1989). Evaluation of white clover plants collected from dairy and sheep/beef farms in Northland (New Zealand). New Zealand Journal Of Agricultural Research 32(1): 113-116.

Stevens, D. R. and M. J. Hickey (1989). Comparative performance of Grasslands Matua prairie grass and Grasslands Nui ryegrass under a hard, infrequent grazing management. New Zealand Journal Of Agricultural Research 32(1): 17-22.

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Macduff, J. H., A. J. Gordon, et al. (1989). White clover nitrogen-fixation in response to root temperature and nitrate: I. Growth and uptake of nitrate from flowing nutrient solutions. Journal Of Experimental Botany 40(214): 517-526.

Pocsi, I., L. Kiss, et al. (1989). Kinetic investigation of the substrate specificity of the cyanogenic beta-D-glucosidase (linamarase) of white clover. Archives Of Biochemistry And Biophysics 272(2): 496-506.

Kangasjarvi, J. and J. Oksanen (1989). Pollinator behavior in cultivated and wild arctic bramble (Rubus arcticus L.). Journal Of Agricultural Science In Finland 61(1): 33-38.

Ryle, G. J. A., C. E. Powell, et al. (1989). Carbon and nitrogen yield, and dinitrogen fixation in white clover plants receiving simulated continuous defoliation in controlled environments. Annals Of Botany 63(6): 675-686.

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Bellotti, W. D. and G. J. Blair (1989). The influence of sowing method on perennial grass establishment: II. Seedbed microenvironment, germination and emergence. Australian Journal Of Agricultural Research 40(2): 313-322.

Bellotti, W. D. and G. J. Blair (1989). The influence of sowing method on perennial grass establishment: I. Dry matter yield and botanical composition. Australian Journal Of Agricultural Research 40(2): 301-312.

Caradus, J. R., A. C. Mackay, et al. (1989). Classification of a world collection of white clover cultivars. Euphytica 42(1-2): 183-196.

Niedzwiedz, S. I. and S. Lewak (1989). Photoinhibition of white clover seed germination at low water potential. Physiologia Plantarum 76(1): 53-56.

Nijs, I., I. Impens, et al. (1989). Effects of different carbon dioxide environments on the photosynthesis-yield relationship and the carbon and water balance of a white clover (Trifolium repens cultivar Blanca) Sward. Journal Of Experimental Botany 40(212): 353-360.

Pederson, G. A. and G. L. Windham (1989). Resistance to Meloidogyne incognita in Trifolium interspecific hybrids and species related to white clover. Plant Disease 73(7): 567-569.

Feller, D. M. J. and J. Parent (1989). Pollen analysis of honeys from Ontario, Canada. Apidologie 20(2): 127-138.

Ambrogioni, L. and S. Caroppo (1988). Life cycle of a cyst nematode close to Heterodera daverti Wouts and Sturhan in excised root cultures of Trifolium repens L. Redia 71(2): 439-454.

Mowat, D. J. and M. A. Shakeel (1989). The effect of some invertebrate species on persistence of white clover in ryegrass swards. Grass And Forage Science 44(2): 117-124.

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Hill, M. J. (1989). Growth of Trifolium repens L. and Trifolium semipilosum var. glabrescens Gillet at different temperatures in controlled environments and in the field. Grass And Forage Science 44(2): 125-138.

Slansky, F. J. (1989). Early season weedy legumes: Potential larval food plants for the migratory velvetbean caterpillar (Lepidoptera: Noctuidae). Journal Of Economic Entomology 82(3): 819-824.

Corpe, W. A. and S. Rheem (1989). Ecology of the methylotrophic bacteria on living leaf surfaces. Fems 62(4): 243-250.

Saxena, V. K. and A. K. Jain (1989). A new acylated isoflavone glycoside from Trifolium repens. Fitoterapia 60(1): 85.

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Noor, L. S., C. Robin, et al. (1989). Effect of water deficit on white clover: I. Importance of the cultivar. Agronomie 9(3): 251-258.

Pederson, G. A. (1989). Taproot and adventitious root growth of white clover as influenced by nitrogen nutrition. Crop Science 29(3): 764-768.

Lockhart, B. E. L. (1989). Recurrence of natively occurring potato yellow dwarf virus in Minnesota (USA). Plant Disease 73(4): 321-323.

Fenner, M. and W. G. Lee (1989). Growth of seedlings of pasture grasses and legumes deprived of single mineral nutrients. Journal Of Applied Ecology 26(1): 223-232.

Hopkins, A., P. J. Murray, et al. (1989). A comparison of the herbage productivity of Bromus wildenowii cultivar Grasslands Matua with four cultivars of Lolium perenne when grown in association with Trifolium repens. Grass And Forage Science 44(1): 31-40.

Wheeler, J. L. and P. J. Vickery (1989). Variation in hydrogen cyanide potential among cultivars of white clover (Trifolium repens). Grass And Forage Science 44(1): 107-110.

Shivji, A. and R. Turkington (1080). The influence of Rhizobium trifolii on growth characteristics of Trifolium repens: Integration of local environments by clonal genets of Trifolium repens. Canadian Journal Of Botany 67(4): 1080-1084.

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Menchaca, L. and M. Hornung (1989). Response of white clover (Trifolium repens L.) and ryegrass (Lolium perenne L.) to acid rain in situations of species interferences. New Phytologist 111(3): 483-490.

McEwen, J., W. Day, et al. (1989). Effects of irrigation, nitrogen fertilizer, cutting frequency and pesticides on ryegrass, ryegrass-clover mixtures, clover and lucerne grown on heavy and light land. Journal Of Agricultural Science 112(2): 227-248.

Caradus, J. R., A. C. Mackay, et al. (1989). Intraspecific variation for frost hardiness in white clover. Journal Of Agricultural Science 112(2): 151-158.

Hilligardt, M. and F. Weberling (1989). Growth forms in Trifolium L. Flora 182(1-2): 13-41.

Niedzwiedz, S. I. and S. Lewak (1988). Phytochrome involvement in inhibition of germination of white clover seeds at low temperature. Acta Physiologiae Plantarum 10(4): 301-306.

Hayashiba, Y., T. Nagata, et al. (1989). Identification of plant stains using high performance liquid chromatography. Journal Of Forensic Sciences 34(2): 328-335.

Bond, J. E. and K. J. Webb (1989). Regeneration and analysis of plants from stolon segments of Trifolium repens (white clover). Plant Science 61(1): 119-126.

Glendining, M. J. and L. R. Mytton (1989). The response of white clover (Trifolium repens L.) seedlings to spring root temperatures: The relative roles of the plant and the Rhizobium bacteria. Plant And Soil 113(2): 147-154.

Kiso, S. and K. Kikuchi (1988). Optimizing the application rates of nitrogen fertilizer on the basis of legume ratio in timothy (Phleum pratense L.) dominant meadows. Journal Of Japanese Society Of Grassland Science 34(3): 169-177.

Heagle, A. S., J. Rebbeck, et al. (1989). Effects of long-term ozone exposure and soil moisture deficit on growth of a ladino clover-tall fescue pasture. Phytopathology 79(2): 128-136.

Jung, J., J. Dressel, et al. (1989). Nitrogen balance of legume-wheat cropping sequences. Journal Of Agronomy And Crop Science 162(1): 1-9.

Chrisp, J. S., A. R. Sykes, et al. (1989). Kinetic aspects of calcium metabolism in lactating sheep offered herbages with different calcium concentrations and the effect of protein supplementation. British Journal Of Nutrition 61(1): 45-58.

Chrisp, J. S., A. R. Sykes, et al. (1989). Fecal endogenous loss of calcium in young sheep. British Journal Of Nutrition 61(1): 59-66.

Petrov, P., D. Mitev, et al. (1988). Allelopathy in bracken: III. Allelopathic effect of bracken root water extract on the germination of some meadow grass seeds. Fiziologiya Na Rasteniyata 14(4): 79-84.

Till, B. I., P. Kakes, et al. (1988). Variable phenotypes and stable distribution of the cyanotypes of Trifolium repens L. in southern France. Acta Oecologica Oecologia Plantarum 9(4): 393-404.

Pirlo, G., E. Santi, et al. (1987). Researches on conservation of green forages through ensiling: V. In vivo digestibility and estimate of nutritive value of a Dactylis glomerata and Trifolium repens mixture. Annali Dell'Istituto Sperimentale Per La Zootecnia 20(1): 115-131.

Solangaarachchi, S. M. and J. L. Harper (1989). The growth and asymmetry of neighboring plants of white clover (Trifolium repens L.). Oecologia 78(2): 208-213.

Mackinnon, B. W., H. S. Easton, et al. (1988). The effect of reduced leaf shear strength on the nutritive value of perennial ryegrass. Journal Of Agricultural Science 111(3): 469-474.

Blaikie, S. J., K. B. Kelly, et al. (1988). Productivity of irrigated pastures following paraplowing and gypsum slotting of subsoil exposed by laser landforming: A short-term study. Australian Journal Of Agricultural Research 39(5): 837-846.

Chisholm, R. H. and G. J. Blair (1988). Phosphorus efficiency in pasture species: III. Correlations of dry matter accumulation with phosphorus pool sizes and their net transfer rate. Australian Journal Of Agricultural Research 39(5): 827-836.

Chisholm, R. H. and G. J. Blair (1988). Phosphorus efficiency in pasture species: II. Differences in the utilization of phosphorus between major chemical fractions. Australian Journal Of Agricultural Research 39(5): 817-826.

Chisholm, R. H. and G. J. Blair (1988). Phosphorus efficiency in pasture species: I. Measures based on total dry weight and phosphorus content. Australian Journal Of Agricultural Research 39(5): 807-816.

Guyton, R. R., J. R. Thompson, et al. (1989). Root-knot nematode populations and carrot yield following five forage legumes and continuous carrots. Hortscience 24(1): 71-73.

Kakes, P. (1989). An analysis of the costs and benefits of the cyanogenic system in Trifolium repens L. Theoretical And Applied Genetics 77(1): 111-118.

Telleria, M. C. (1988). Palynological analysis of honeys from the northwest of the Province of Buenos Aires (Argentina). Apidologie 19(3): 275-290.

Fry, J. D. and J. D. Butler (1989). Evapotranspiration rates of turf weeds and groundcovers. Hortscience 24(1): 73-75.

Hongo, A. (1989). Survival and growth of seedlings of Rumex obtusifolius L. and Rumex crispus L. in newly sown grassland. Weed Research 29(1): 7-12.

Douglas, G. C. and V. Connolly (1989). Self fertilization and seed set in Trifolium repens L. by in situ and in vitro pollination. Theoretical And Applied Genetics 77(1): 71-75.

Ledgard, S. F. (1989). Nutrition, moisture and rhizobial strain influence isotopic fractionation during dinitrogen fixation in pasture legumes. Soil Biology And Biochemistry 21(1): 65-68.

Rangeley, A. (1988). The utilization of nitrogen fertilizer, applied to perennial ryegrass/white clover pasture growing on a humus iron podzol in northeast Scotland (UK). Grass And Forage Science 43(4): 363-370.

Hill, M. J. and A. C. Gleeson (1988). Competition among seedlings of phalaris, subterranean clover and white clover in diallel replacement series mixtures. Grass And Forage Science 43(4): 411-420.

Mowat, D. J. and M. A. Shakeel (1988). The effect of some invertebrate species on the growth of white clover (Trifolium repens L.) in the laboratory. Grass And Forage Science 43(4): 405-410.

Woledge, J., J. A. Bunce, et al. (1989). The effect of air humidity on photosynthesis of ryegrass and white clover at three temperatures. Annals Of Botany 63(2): 271-280.

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Wilson, G. F., D. D. S. Mackenzie, et al. (1988). Importance of body tissues as sources on nutrients for milk synthesis in the cow, using carbon-13-labelled as a marker. British Journal Of Nutrition 60(3): 605-618.

Ellsbury, M. M. and G. T. Baker (1989). Biological and morphological aspects of the egg stage and oviposition of Languria mozardi (Coleoptera: Languriidae). Proceedings Of The Entomological Society Of Washington 91(1): 9-14.

Staley, T. E., R. J. Wright, et al. (1989). Comparative growth responses of perennial forage legumes in hill-land ultisols and their relationship to soil acidity-related factors. Journal Of Plant Nutrition 12(2): 245-262.

Hart, A. L. (1989). Distribution of phosphorus in nodulated white clover plants. Journal Of Plant Nutrition 12(2): 159-172.

Boller, B. C. and J. Nosberger (1988). Influence of dissimilarities in temporal and spatial nitrogen-uptake patterns on nitrogen-15 based estimates of fixation and transfer of nitrogen in ryegrass-clover mixtures. Plant And Soil 112(2): 167-176.

Waller, J. C., J. C. Forcherio, et al. (1988). Performance of fall-calving cows and their calves grazing fescue-based forage systems. Journal Of Production Agriculture 1(4): 338-342.

Hume, L. J., N. J. Ofsoski, et al. (1988). Influence of pH, exchangeable aluminum and 0.02M calcium chloride-extractable aluminum on the growth and nitrogen-fixing activity of white clover (Trifolium repens) in some New Zealand soils. Plant And Soil 111(1): 111-120.

Marriott, C. A., R. J. Thomas, et al. (1988). The effect of temperature and nitrogen interactions on growth and nitrogen assimilation of white clover. Plant And Soil 111(1): 43-52.

Debelle, F., F. Maillet, et al. (1988). Interference between Rhizobium meliloti and Rhizobium trifolii nodulation genes: Genetic basis of Rhizobium meliloti dominance. Journal Of Bacteriology 170(12): 5718-5727.

McBratney, J. M. (1988). The effect of suppressing grass in mixed swards on white clover seed production. Record Of Agricultural Research 36: 9-16.

Laidlaw, A. S. (1988). Evaluation of white clover (Trifolium repens) cultivars in mixed swards under cutting management and receiving nitrogen fertilizer in spring. Record Of Agricultural Research 36: 1-8.

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Sybenga, J. (1988). Mathematical models for estimating preferential pairing and recombination in triploid hybrids. Genome 30(5): 745-757.

Harvey, R. W. and J. C. Burns (1988). Forage species, concentrate feeding level and cow management system in combination with early weaning. Journal Of Animal Science 66(11): 2722-2727.

Eltilib, A. M. and S. F. Ledgard (1988). Production and nitrogen fixation by Grasslands Kopu and Grasslands Huia white clovers under different nitrogen regimes. New Zealand Journal Of Agricultural Research 31(3): 325-330.

Barker, D. J., D. M. Zhang, et al. (1988). Root distribution in a low fertility hill country sward grazed by sheep. New Zealand Journal Of Experimental Agriculture 16(1): 73-76.

Saunders, W. M. H., D. M. Cooper, et al. (1988). A comparison of slow release potassium fertilizers for pasture. New Zealand Journal Of Experimental Agriculture 16(1): 29-34.

Barker, D. J. and D. M. Zhang (1988). The effects of paraquat spraying, seed placement, and pre-germination on the appearance and survival of white clover, cocksfoot, and ryegrass seedlings from spring oversowing in hill country. New Zealand Journal Of Experimental Agriculture 16(1): 1-10.

Caradus, J. R. and R. W. Snaydon (1988). Effect of grass competition, cutting frequency, and soil type on the phosphorus response of semi-natural populations of white clover. New Zealand Journal Of Agricultural Research 31(2): 95-104.

Hern, J. L., R. L. Peck, et al. (1988). Response of Ladino white clover to sulfur at cool temperatures. Agronomy Journal 80(6): 971-976.

Hume, L. J. and J. A. August (1988). Effects of phosphorus application and mycorrhizal inoculation on white clover (Trifolium repens) growth in andesite tailings from Martha Mine, Waihi (New Zealand). New Zealand Journal Of Agricultural Research 31(3): 331-338.

Marshall, A. H. and I. R. James (1988). Effect of plant density on stolon growth and development of contrasting white clover (Trifolium repens) varieties and its influence on the components of seed yield. Grass And Forage Science 43(3): 313-318.

Rangeley, A. (1988). Fertilizer requirements for maintenance of a perennial ryegrass (Lolium perenne L.) white clover (Trifolium repens L.) pasture growing on a humus iron podzol in N.E. Scotland (UK). Grass And Forage Science 43(3): 263-272.

Brown, J. D. and A. A. Brunt (1988). The natural occurrence of white clover mosaic virus in sweet pea (Lathyrus odoratus) in south-east England (UK). Plant Pathology 37(3): 445-446.

Brock, J. L., M. J. M. Hay, et al. (1988). Morphology of white clover (Trifolium repens L.) plants in pastures under intensive sheep grazing. Journal Of Agricultural Science 111(2): 273-284.

Ali, N. A. and R. M. Jackson (1988). Effects of plant roots and their exudates on germination of spores of ectomycorrhizal fungi. Transactions Of The British Mycological Society 91(2): 253-260.

McGrath, S. P., P. C. Brookes, et al. (1988). Effects of potentially toxic metals in soil derived from past applications of sewage sludge on nitrogen fixation by Trifolium repens L. Soil Biology And Biochemistry 20(4): 415-424.

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Carral, E., M. J. Reigosa, et al. (1763). Rumex obtusifolius L: Release of allelochemical agents and their influence on small-scale spatial distribution of meadow species. Journal Of Chemical Ecology 14(9): 1763-1774.

Hill, J. and Y. T. P. T. Michaelson (1988). The measurement and analysis of competitive ability among populations of white clover and perennial ryegrass. Theoretical And Applied Genetics 76(3): 361-368.

Stephens, P. M. and J. E. Cooper (1988). Variation in speed of infection of "no root hair zone" of white clover and nodulating competitiveness among strains of Rhizobium trifolii. Soil Biology And Biochemistry 20(4): 465-470.

Wilson, D. O. (1988). Differential plant response to inoculation with two VA mycorrhizal fungi isolated from a low-pH soil. Plant And Soil 110(1): 69-76.

Ab, S. N. A., Q. O. N. Kay, et al. (1988). Salt tolerance in natural populations of Trifolium repens L. New Phytologist 109(4): 483-490.

Petrov, P. and D. Mitev (1988). Allelopathy in bracken: I. Allelopathic effect of water extract from mature leaves of bracken on the germination of seeds of some grasses. Fiziologiya Na Rasteniyata 14(1): 35-41.

Rebbeck, J., U. Blum, et al. (1988). Effects of ozone on the regrowth and energy reserves of a ladino clover-tall fescue pasture. Journal Of Applied Ecology 25(2): 659-682.

Feller, D. M. J., J. Parent, et al. (1988). Microscopic analysis of honeys from Alberta, Canada. Journal Of Apicultural Research 26(2): 123-132.

Evans, R. C. and R. Turkington (1988). Maintenance of morphological variation in a biotically patchy environment. New Phytologist 109(3): 369-376.

Pederson, G. A. and G. E. Brink (1988). Compatibility of five white clover and five tall fescue cultivars grown in association. Agronomy Journal 80(5): 755-758.

Wilman, D. and D. Simpson (1988). The growth of white clover (Trifolium repens) in five sown hill swards grazed by sheep. Journal Of Applied Ecology 25(2): 631-642.

Ryle, G. J. A., C. E. Powell, et al. (1988). Responses of nitrogen fixation-linked respiration to host-plant energy status in white clover acclimated to a controlled environment. Journal Of Experimental Botany 39(204): 879-888.

Ulyatt, M. J., D. J. Thomson, et al. (1988). The digestion of perennial ryegrass (Lolium perenne cultivar Melle) and white clover (Trifolium repens cultivar Blanca) by grazing cattle. British Journal Of Nutrition 60(1): 137-150.

Archer, K. A. and G. G. Robinson (1988). Agronomic potential of native grass species on the Northern Tablelands of New South Wales (Australia): II nutritive value. Australian Journal Of Agricultural Research 39(3): 425-436.

Robinson, G. G. and K. A. Archer (1988). Agronomic potential of native grass species on the Northern Tablelands of New South Wales (Australia): I growth and herbage production. Australian Journal Of Agricultural Research 39(3): 415-424.

Hojito, M., A. Nishimune, et al. (1988). Acidity tolerance of grasses. Bulletin Of Hokkaido Prefectural Agricultural Experiment Stations(57): 79-92.

Ferris, M. A. and J. D. Castello (1988). Detection of tomato ringspot virus in white ash and adjacent vegetation in central New York (USA). Canadian Journal Of Forest Research 18(6): 813-817.

Asai, Y. (1988). Materials for the naturalized flora of Japan: 2. Journal Of Japanese Botany 63(5): 197-200.

Takahashi, Y., I. Otani, et al. (1988). Studies on allelopathic interactions among some grassland species: I. Effect of root exudates from some grass and legume species on the growth of their own species and other species. Journal Of Japanese Society Of Grassland Science 33(4): 338-344.

Richardson, A. E., M. A. Djordjevic, et al. (1988). Effects of pH, calcium and aluminum on the exudation from clover seedlings of compounds that induced the expression of nodulation genes in Rhizobium trifolii. Plant And Soil 109(1): 37-48.

Hart, A. L. and D. H. Greer (1988). Photosynthesis and carbon export in white clover plants grown at various levels of phosphorus supply. Physiologia Plantarum 73(1): 46-51.

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Gustavsson, A. (1988). Peronospora on cultivated clovers in Sweden. Vaxtskyddsnotiser 52(3): 73-77.

Retallack, B. and J. H. M. Willison (1988). Morphology, anatomy, and distribution of capitate glandular trichomes on selected Trifolium species. Crop Science 28(4): 677-680.

McLaughlin, M. R. and D. L. Boykin (1988). Virus diseases of seven species of forage legumes in the southeastern USA. Plant Disease 72(6): 539-542.

Schifino, W. M. T. and F. M. I. B. Moraes (1988). Chromosome numbers, karyotypes and meiotic behavior of populations of some Trifolium (Leguminosae) species. Revista Brasileira De Genetica 11(2): 379-390.

Hopkins, A., J. Wainwright, et al. (1988). 1986 survey of upland grassland in England and Wales (UK): Changes in age structure and botanical composition since 1970-72 in relation to grassland management and physical features. Grass And Forage Science 43(2): 185-198.

Gibb, M. J. and M. S. Ridout (1988). Application of double normal frequency distributions fitted to measurements of sward height. Grass And Forage Science 43(2): 131-136.

Fraser, J. (1988). Seasonal yield changes in white clover varieties and ecotypes in Nova Scotia (Canada). Journal Of Agricultural Science 110(3): 609-618.

Shipitalo, M. J. and R. Protz (1988). Factors influencing the dispersibility of clay in worm casts. Soil Science Society Of America Journal 52(3): 764-769.

Morrow, R. E., J. A. Stricker, et al. (1988). Cow-calf production on tall fescue-ladino clover pastures with and without nitrogen fertilization or creep feeding: Fall calves. Journal Of Production Agriculture 1(2): 145-148.

Bagley, C. P., J. I. Feazel, et al. (1988). Cool-season annual forage mixtures for grazing beef steers. Journal Of Production Agriculture 1(2): 149-152.

Weeda, W. C. and C. During (1987). Effects of grazing management of herbage production and botanical composition of Grasslands Nui ryegrass-paspalum-white clover pasture: 2. Effect of closing up pasture for silage and hay. New Zealand Journal Of Agricultural Research 30(4): 431-438.

Weeda, W. C. and C. During (1987). Effects of grazing management on herbage production and botanical composition of Grasslands Nui ryegrass-paspalum-white clover pasture: 1. Effect of intensity of grazing by cattle in different seasons. New Zealand Journal Of Agricultural Research 30(4): 423-430.

Lowther, W. L. (1987). Application of molybdenum to inoculated, lime-coated white clover seed. New Zealand Journal Of Experimental Agriculture 15(3): 271-276.

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Kirchmann, H. (1988). Shoot and root growth and nitrogen uptake by six green manure legumes. Acta Agriculturae Scandinavica 38(1): 25-32.

Tan, S. T., P. T. Holland, et al. (1988). Extractives from New Zealand honeys: 1. White clover, manuka, and kanuka unifloral honeys. Journal Of Agricultural And Food Chemistry 36(3): 453-460.

Thompson, L. and J. L. Harper (1988). The effect of grasses on the quality of transmitted radiation and its influence on the growth of white clover Trifolium repens. Oecologia 75(3): 343-347.

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Iqbal, M. Z. (1987). Growth of white clover (Trifolium repens L.) exposed to low concentration of sulfur dioxide and nitrogen dioxide at different levels of sulfate and nitrate nutrients. Pakistan Journal Of Scientific And Industrial Research 30(3): 221-223.

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Caradus, J. R. (1987). Intraspecific variation for tolerance to aluminum toxicity in white clover. Journal Of Plant Nutrition 10(7): 821-830.

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Solangaarachchi, S. M. and J. L. Harper (1987). The effect of canopy filtered light on the growth of white clover Trifolium repens. Oecologia 72(3): 372-376.

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Barney, P. A. (1987). The use of Trifolium repens, Trifolium subterraneum and Medicago lupulina as overwintering leguminous green manures. Biological Agriculture & Horticulture 4(3): 225-234.

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Beever, D. E., H. R. Losada, et al. (1987). The use of monensin or formaldehyde to control the digestion of the nitrogenous constituents of perennial ryegrass (Lolium perenne cultivar Melle) and white clover (Trifolium repens cultivar Blanca) in the rumen of cattle. British Journal Of Nutrition 57(1): 57-68.

Maheswaran, G. and E. G. Williams (1987). Uniformity of plants regenerated by direct somatic embryogenesis from zygotic embryos of Trifolium repens. Annals Of Botany 59(1): 93-98.

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Cottam, D. A. (1986). The effects of slug-grazing on Trifolium repens and Dactylis glomerata in monoculture and mixed sward. Oikos 47(3): 275-279.

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Johns, D. C. (1986). Evaluation of the nutritional value of ryegrass (Lolium perenne) and white clover (Trifolium repens) leaf protein concentrate. New Zealand Journal Of Agricultural Research 29(2): 249-256.

Johns, D. C. (1986). Influence of gut microflora on the nutritional value of ryegrass (Lolium perenne) and white clover (Trifolium repens) leaf protein concentrate when consumed by chickens. New Zealand Journal Of Agricultural Research 29(2): 257-262.

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Caradus, J. R. and R. W. Snaydon (1986). Response to phosphorus of populations of white clover (Trifolium repens): 1. Field studies. New Zealand Journal Of Agricultural Research 29(2): 155-162.

Caradus, J. R. and R. W. Snaydon (1986). Response to phosphorus of populations of white clover (Trifolium repens): 2. Glasshouse and growth cabinet studies. New Zealand Journal Of Agricultural Research 29(2): 163-168.

Hart, A. L. (1986). A comparison of the response to phosphorus of Trifolium repens (cultivars) Grasslands Huia and Grasslands Tahora in a controlled environment. New Zealand Journal Of Agricultural Research 29(2): 179-182.

Caradus, J. R. and R. W. Snaydon (1986). Response to phosphorus of populations of white clover (Trifolium repens): 3. Comparison of experimental techniques. New Zealand Journal Of Agricultural Research 29(2): 169-178.

Baylis, J. P., J. M. Cherrett, et al. (1986). A survey of the invertebrates feeding on liver clover roots (Trifolium repens) phosphorus-32 using as a radiotracer. Pedobiologia 29(3): 201-208.

Frame, J. (1986). The production and quality potential of four forage legumes sown alone and combined in various associations. Crop Research 25(2): 103-122.

Mitchell, R. L., J. B. McLaren, et al. (1986). Forage growth, consumption, and performance of steers grazing bermudagrass and fescue mixtures. Agronomy Journal 78(4): 675-680.

Natsuaki, T., K. T. Natsuaki, et al. (1986). Relationships between the cryptic and temperate viruses of alfalfa (Medicago sativa), beet (Beta vulgaris) and white clover (Trifolium repens). Intervirology 25(2): 69-75.

Triplett, E. W. (1986). Two indirect methods for detecting ureide synthesis by nodulated legumes. Plant Physiology 81(2): 566-571.

Gaynor, D. L., G. A. Lane, et al. (1986). Measurement of grass grub resistance of bean (Phaseolus vulgaris) in a controlled environment. New Zealand Journal Of Experimental Agriculture 14(1): 77-82.

Cammell, S. B., D. J. Thomson, et al. (1986). The efficiency of energy utilization in growing cattle consuming fresh perennial ryegrass (Lolium perenne Melle) or white clover (Trifolium repens Blanca). British Journal Of Nutrition 55(3): 669-680.

Hayes, M. J. and E. D. Williams (1986). Some effects of fluid-sowing, pre-germination, irrigation and soil covering on the establishment and growth of seedlings of white clover (Trifolium repens) slot-seeded into permanent pasture. Grass And Forage Science 41(2): 151-158.

Borris, I. B. (1986). Temperature response and flowering of white clover (Trifolium repens) varieties in controlled environments and the field. Annals Of Applied Biology 108(3): 659-666.

Eagles, C. F. and O. B. Othman (1986). Effect of temperature, irradiance and photoperiod on morphological characters of seedlings of contrasting white clover (Trifolium repens) populations. Annals Of Applied Biology 108(3): 629-638.

Eagles, C. F. and O. B. Othman (1986). Variation in growth attributes of contrasting populations of Trifolium repens. Annals Of Applied Biology 108(3): 619-628.

Clifford, P. T. P. and S. D. White (1986). A sulfur response: White clover (Trifolium repens) seed production. New Zealand Journal Of Experimental Agriculture 14(1): 97-100.

Wood, M. and J. E. Cooper (1985). Soil acidity factors and growth of white clover (Trifolium repens) in acid hill soils. Soil Use And Management 1(2): 66-69.

Buckeridge, D. J. and D. J. Norrington (1986). Competition for phosphate between establishing plants of Lolium perenne and Trifolium repens under differing cultivation treatments in an upland pasture. Journal Of Agricultural Science 106(3): 449-454.

Jarvis, S. C. and D. J. Hatch (1986). The effects of low concentrations of aluminum on the growth and uptake of nitrate-nitrogen by white clover (Trifolium repens). Plant And Soil 95(1): 43-56.

Ogata, S., K. Fujita, et al. (1986). Effect of aluminum concentration in culture solution on the growth and nitrogen-fixation of some tropical pasture legumes. Soil Science And Plant Nutrition 32(1): 27-36.

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Kireeva, O. V. (1986). Variability of Trifolium repens affected by chemical mutagens. Sel'Skokhozyaistvennaya Biologiya(2): 48-52.

Hay, M. J. M., L. R. Saker, et al. (1986). Phosphate uptake and transport by roots and stolons of intact white clover (Trifolium repens cultivar Blanca). Journal Of Experimental Botany 37(178): 577-588.

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Ragland, C. K., C. L. Campbell, et al. (1986). The effects of clover yellow vein virus and peanut stunt virus on yield of two clones of ladino white clover (Trifolium repens). Phytopathology 76(5): 557-561.

Mercer, C. F. and D. R. Woodfield (1986). A survey of root knot and clover cyst nematodes in dry hill country. New Zealand Journal Of Agricultural Research 29(1): 129-136.

Derylo, M., A. Skorupska, et al. (1986). Rhizobium trifolii mutants deficient in exopolysaccharide production. Physiologia Plantarum 66(4): 699-704.

Thompson, J. D. and I. Hutchinson (1986). Cohabitation of species in an artificial grass-legume community on ski-slopes on Whistler Mountain, British Columbia, Canada. Journal Of Applied Ecology 23(1): 239-250.

Campbell, M. H., M. J. Keys, et al. (1986). Establishing surface-sown pastures in a Poa labillardieri and Themeda australis association. Australian Journal Of Experimental Agriculture 26(3): 331-338.

Mehanni, A. H. and A. P. Repsys (1986). Perennial pasture production after irrigation with saline groundwater in the Goulburn Valley, Victoria (Australia). Australian Journal Of Experimental Agriculture 26(3): 319-324.

Davidson, I. A., M. J. Robson, et al. (1986). Effect of temperature and nitrogen supply on the growth of perennial ryegrass (Lolium perenne cultivar S23) and white clover (Trifolium repens cultivar S100): 1. Carbon and nitrogen economies of mixed swards at low temperature. Annals Of Botany 57(5): 697-708.

Davidson, I. A. and M. J. Robson (1986). Effect of temperature and nitrogen supply on the growth of perennial ryegrass (Lolium perenne cultivar S23) and white clover (Trifolium repens cultivar S100): 2. A comparison of monocultures and mixed swards. Annals Of Botany 57(5): 709-720.

Richardson, J. A. and M. E. Evans (1986). Restoration of grassland after Magnesian Limestone quarrying. Journal Of Applied Ecology 23(1): 317-332.

Gwiazda, S., A. Noguchi, et al. (1986). Solubility and stability characteristics of proteins in green juice prepared from alfalfa (Medicago sativa), white clover (Trifolium repens) and Italian ryegrass (Lolium multiflorum). Journal Of The Japanese Society For Food Science And Technology 33(3): 213-216.

Lambert, M. G., D. A. Clark, et al. (1986). Influence of fertilizer and grazing management on North Island (New Zealand) moist hill country: 3. Performance of introduced and resident legumes. New Zealand Journal Of Agricultural Research 29(1): 11-22.

Chapman, D. F. and B. D. Campbell (1986). Establishment of ryegrass (Lolium perenne), cocksfoot (Dactylis glomerata) and white clover (Trifolium repens) by oversowing in hill country: 2. Sown species and total herbage accumulation. New Zealand Journal Of Agricultural Research 29(1): 33-38.

Chapman, D. F. (1986). Development, removal, and death of white clover (Trifolium repens) leaves under 3 grazing managements in hill country. New Zealand Journal Of Agricultural Research 29(1): 39-48.

Webb, K. J. (1986). Transformation of forage legumes using Agrobacterium tumefaciens. Theoretical And Applied Genetics 72(1): 53-58.

Date, R. A. and R. J. Roughley (1986). Effects of root temperature on the growth and nitrogen fixation of Trifolium semipilosum and Trifolium repens. Experimental Agriculture 22(2): 133-148.

Armstrong, R. H., T. G. Common, et al. (1986). The voluntary intake and in vivo digestibility of herbage harvested from indigenous hill plant communities. Grass And Forage Science 41(1): 53-60.

Bassam, B. J. and P. M. Gresshoff (1986). Use of neomycin for preferential selection against Rhizobium trifolii in symbiosis with white clover (Trifolium repens). Australian Journal Of Biological Sciences 39(1): 23-30.

Canter, C. H. C. J., B. A. A. N. Van, et al. (1986). Sym plasmid and chromosomal gene products of Rhizobium trifolii elicit developmental responses on various legume roots. Journal Of Plant Physiology 122(1): 25-40.

Shalashivli, K. G. and E. P. Kemertelidze (1985). Flavonoids in Georgian (USSR) flora from clover belonging to Trifolium. Izvestiya Akademii Nauk Gruzinskoi Ssr Seriya Biologicheskaya 11(6): 388-392.

Horrill, J. C. and A. J. Richards (1986). Differential grazing by the mollusk Arion hortensis on cyanogenic and acyanogenic seedlings of the white clover, Trifolium repens. Heredity 56(2): 277-281.

Moffett, M. L., A. C. Hayward, et al. (1986). Five new hosts of Pseudomonas andropogonis occurring in eastern Australia: Host range and characterization of isolates. Plant Pathology 35(1): 34-43.

Jean, Y. and J. M. Bergeron (1986). Can voles (Microtus pennsylvanicus) be poisoned by secondary metabolites of commonly eaten foods? Canadian Journal Of Zoology 64(1): 158-162.

Caradus, J. R. and R. W. Snaydon (1986). Plant factors influencing phosphorus uptake by white clover (Trifolium repens) from solution culture: I. Population differences. Plant And Soil 93(2): 153-164.

Caradus, J. R. and R. W. Snaydon (1986). Plant factors influencing phosphorus uptake by white clover (Trifolium repens) from solution culture: II. Root and shoot pruning and split-root studies. Plant And Soil 93(2): 165-174.

Caradus, J. R. and R. W. Snaydon (1986). Plant factors influencing phosphorus uptake by white clover (Trifolium repens) from solution culture: III. Reciprocal grafting. Plant And Soil 93(2): 175-182.

Burns, J. C. and R. W. Harvey (1986). Steer performance and productivity of (Festuca arundinacea cultivar) "Kenhy" fescue and persistence of fescues in the central Appalachians (USA). Agronomy Journal 78(2): 283-287.

Forster, R. L. S. and K. B. A. M. Morris (1985). A distinct strain of lucerne Australian latent virus in white clover (Trifolium repens) in New Zealand. Annals Of Applied Biology 107(3): 449-454.

Alphey, T. J. W. (1985). A study of spatial distribution and population dynamics of two sympatric species of trichodorid nematodes. Annals Of Applied Biology 107(3): 497-510.

Roberts, H. A. and J. E. Boddrell (1985). Seed survival and seasonal pattern of seedling emergence in some Leguminosae. Annals Of Applied Biology 106(1): 125-132.

Renwick, A. and D. G. Jones (1986). The manipulation of white clover (Trifolium repens) "host preference" for strains of Rhizobium trifolii in an upland soil. Annals Of Applied Biology 108(2): 291-302.

Norris, I. B. (1985). Flowering of contrasting white clover (Trifolium repens) varieties in relation to daylength in controlled environments and in the field. Annals Of Applied Biology 107(2): 301-308.

Goodman, P. J. and M. Collison (1985). Yield responses of two ryegrass and two white clover varieties grown in contrasting mixtures with applications of phosphate at different depths and on different soils. Annals Of Applied Biology 107(2): 287-292.

Von, S. F. and J. Nosberger (1986). Effects of season, altitude and daylength on floral initiation of two contrasting genotypes of Trifolium repens. Journal Of Agricultural Science 106(1): 149-154.

Davidson, I. A. and M. J. Robson (1986). Effect of contrasting patterns of nitrate application on the nitrate uptake, nitrogen fixation, nodulation and growth of white clover (Trifolium repens). Annals Of Botany 57(3): 331-338.

Miller, A. L., J. A. Raven, et al. (1986). Endogenous ion currents traverse growing roots and root hairs of Trifolium repens. Plant Cell And Environment 9(1): 79-84.

Aarssen, L. W. and R. Turkington (1985). Competitive relations among species from pastures of different ages. Canadian Journal Of Botany 63(12): 2319-2325.

Arvy, M. P. (1986). Distribution of selenium and sixteen elements in the different parts of Trifolium repens. Plant And Soil 92(1): 29-36.

Woledge, J. (1986). The effect of age and shade on the photosynthesis of white clover (Trifolium repens) leaves. Annals Of Botany 57(2): 257-262.

Ryle, G. J. A., C. E. Powell, et al. (1986). Defoliation in white clover (Trifolium repens): Nodule metabolism, nodule growth and maintenance, and nitrogenase functioning during growth and regrowth. Annals Of Botany 57(2): 263-272.

Schwank, O., H. Blum, et al. (1986). The influence of irradiance distribution on the growth of white clover (Trifolium repens) in differently managed canopies of permanent grassland. Annals Of Botany 57(2): 273-281.

Maheswaran, G. and E. G. Williams (1986). Direct secondary somatic embryogenesis from immature sexual embryos of Trifolium repens cultured in vitro. Annals Of Botany 57(2): 109-118.

Palmer, J. P., P. J. Williams, et al. (1986). Investigations into nitrogen sources and supply in reclaimed colliery spoil. Plant And Soil 91(2): 181-194.

Fox, R. L., W. M. H. Saunders, et al. (1986). Phosphorus nutrition of pasture species: Phosphorus requirement and root saturation values. Soil Science Society Of America Journal 50(1): 142-148.

Lehnherr, B., F. Machler, et al. (1835). Effect of carbon dioxide concentration during growth on a carbon dioxide concentrating mechanism in white clover (Trifolium repens) as predicted from differential carbon-14 dioxide/carbon-12 dioxide uptake. Journal Of Experimental Botany 36(173): 1835-1841.

Barbetti, M. J. (1985). Infection studies with Cercospora zebrina on pasture legumes in Western Australia. Australian Journal Of Experimental Agriculture 25(4): 850-855.

Petit, J. (1986). The effect of soil pH on plant peroxidase activity as a biochemical indicator of atmospheric pollution. Science Of The Total Environment 48(1-2): 95-108.

Sheath, G. W. and R. C. Boom (1985). Effects of Nov.-April grazing pressure on hill country pastures: 2. Pasture species composition. New Zealand Journal Of Experimental Agriculture 13(4): 329-340.

Clifford, P. T. P. (1985). Effect of cultural practice on potential seed yield components of (cultivars) Grasslands Huia and Grasslands Pitau white clover (Trifolium repens). New Zealand Journal Of Experimental Agriculture 13(4): 301-306.

Clifford, P. T. P. and S. J. M. McCartin (1985). Effects of pre-harvest treatment and mower and header types on seed loss and hard seed content at mowing, recovery, and separation when harvesting a white clover (Trifolium repens) seed crop. New Zealand Journal Of Experimental Agriculture 13(4): 307-316.

Quesenberry, K. H., D. D. Baltensperger, et al. (1986). Screening Trifolium spp. for response to Meloidogyne spp. Crop Science 26(1): 61-64.

Alconero, R., B. Fiori, et al. (1986). Relationships of virus infections to field performance of six clover species. Plant Disease 70(2): 119-121.

Forster, R. L. S. and D. R. Musgrave (1985). Clover yellow vein virus in white clover (Trifolium repens) and sweet pea (Lathyrus odoratus) in the North Island of New Zealand. New Zealand Journal Of Agricultural Research 28(4): 575-578.

Buxton, D. R. and J. S. Hornstein (1986). Cell-wall concentration and components in stratified canopies of alfalfa (Medicago sativa), birdsfoot trefoil (Lotus corniculatus), and red clover (Trifolium pratense). Crop Science 26(1): 180-184.

Roberts, R. J. and R. Morton (1985). Biomass of larval Scarabaeidae (Coleoptera) in relation to grazing pressures in temperate, sown pastures. Journal Of Applied Ecology 22(3): 863-874.

Szabo, T. I. and H. G. Najda (1985). Flowering, nectar secretion and pollen production of some legumes in the Peace River region of Alberta, Canada. Journal Of Apicultural Research 24(2): 102-106.

Grunina, L. K. (1112). Some ways of the adaptation of tundra plants to nitrogen deficit. Botanicheskii Zhurnal 70(8): 1112-1116.

Pradhan, P. and R. S. Tripathi (1985). The effect of nitrogen on interaction between Paspalum dilatatum and Trifolium repens. Acta Oecologica Oecologia Plantarum 6(3): 277-288.

Roberts, R. D. and A. D. Bradshaw (1985). The development of a hydraulic seeding technique for unstable sand slopes: II. Field evaluation. Journal Of Applied Ecology 22(3): 979-994.

Bosworth, S. C., C. S. Hoveland, et al. (1986). Forage quality of selected cool-season weed species. Weed Science 34(1): 150-154.

Reid, D. (1985). The combined use of fertilizer nitrogen and white clover (Trifolium repens) on grazed ryegrass (Lolium perenne) swards. Grass And Forage Science 40(3): 371-374.

Hopkins, A., E. A. Matkin, et al. (1985). Southwest England (UK) grassland survey 1983: 1. Age structure and sward composition of permanent and arable grassland and their relation to manageability, fertilizer nitrogen and other management features. Grass And Forage Science 40(3): 349-360.

Rangeley, A. and P. Newbould (1985). Growth responses to lime and fertilizers and critical concentrations in herbage of white clover (Trifolium repens) in Scottish (UK) hill soils. Grass And Forage Science 40(3): 265-278.

Laidlaw, A. S. (1985). Effect of time application of nitrogenous fertilizer on development of white clover (Trifolium repens cultivar Huia) in an autumn-sown mixed sward. Grass And Forage Science 40(4): 493-497.

Williams, E. D., M. J. Hayes, et al. (1985). Slot-seeding investigations: 4. Effect of phosphate fertilizer and grass suppressant on the establishment and growth of white clover (Trifolium repens) in permanent pasture. Grass And Forage Science 40(4): 437-448.

Sparke, C. J. (1985). Effect of after-treatments on sward composition and the establishment of introduced species following the control of bracken (Pteridium aquilinum). Grass And Forage Science 40(4): 403-410.

Innes, R. W., P. L. Kuempel, et al. (1985). Plant factors induce expression of nodulation and host-range genes in Rhizobium trifolii. Molecular & General Genetics 201(3): 426-432.

Maheswaran, G. and E. G. Williams (1985). Origin and development of somatic embryoids formed directly on immature embryos of Trifolium repens in vitro. Annals Of Botany 56(5): 619-630.

Hughes, M. A., M. A. Dunn, et al. (1985). A regulatory element controlling the synthesis of the cyanogenic beta-glucosidase (linamarase) of white clover (Trifolium repens). Heredity 55(3): 387-392.

Prestidge, R. A., D. Z. S. Van, et al. (1985). Effects of plant species and fertilizers on grass grub larvae, Costelytra zealandica. New Zealand Journal Of Agricultural Research 28(3): 409-418.

Aarssen, L. W. and R. Turkington (1985). Within-species diversity in natural populations of Holcus lanatus, Lolium perenne and Trifolium repens from four different-aged pastures. Journal Of Ecology 73(3): 869-886.

Cottam, D. A. (1985). Frequency-dependent grazing by slugs and grasshoppers. Journal Of Ecology 73(3): 925-934.

Beever, D. E., D. J. Thomson, et al. (1985). The digestion of fresh perennial ryegrass (Lolium perenne cultivar) and white clover (Trifolium repens cultivar Blanca) by growing cattle fed indoors. British Journal Of Nutrition 54(3): 763-776.

Kakes, P. (1985). Linamarase and other beta-glucosidases are present in the cell walls of Trifolium repens leaves. Planta 166(2): 156-160.

Rayner, C. J. and D. F. Langridge (1985). Amino acids in bee-collected pollens from Australian indigenous and exotic plants. Australian Journal Of Experimental Agriculture 25(3): 722-726.

Ferguson, L. R., P. V. Zijl, et al. (1985). Condensed tannins induce micronuclei in cultured V79 Chinese hamster cells. Mutation Research 158(1-2): 89-96.

Wood, M., J. E. Cooper, et al. (1985). A survey of clover and and Lotus rhizobia in Northern Ireland pasture soils. Journal Of Soil Science 36(3): 357-366.

Smith, A. E. (1985). Differential response of Trifolium spp. to 4-(2,4-dichlorophenoxy)butyric acid treatments. Physiologia Plantarum 65(2): 124-128.

Bryan, W. B. (1985). Effects of sod-seeding legumes on hill land pasture productivity and composition. Agronomy Journal 77(6): 901-905.

Reich, P. B. and R. G. Amundson (1985). Ambient levels of ozone reduce net photosynthesis in tree and crop species. Science 230(4725): 566-570.

Overdieck, D. and D. Bossemeyer (1985). Long-term effects of carbon dioxide enrichment on carbon dioxide gas exchange of a model ecosystem. Angewandte Botanik 59(3-4): 179-198.

Tacu, D. (1985). The consumption of natural food by the common vole (Microtus arvalis). Revue Roumaine De Biologie Serie De Biologie Animale 30(1): 31-36.

Clark, D. A. and P. S. Harris (1985). Composition of the diet of sheep grazing swards of differing white clover (Trifolium repens) content and spatial distribution. New Zealand Journal Of Agricultural Research 28(2): 233-240.

Mytton, L. R. and G. J. Rys (1985). The potential for breeding white clover (Trifolium repens) with improved nodulation and nitrogen fixation when grown with combined nitrogen: 2. Assessment of genetic variation in Trifolium repens. Plant And Soil 88(2): 197-212.

Rys, G. J. and L. R. Mytton (1985). The potential for breeding white clover (Trifolium repens) with improved nodulation and nitrogen fixation when grown with combined nitrogen: 1. The effects of different amounts of nitrate nitrogen on phenotypic variation. Plant And Soil 88(2): 181-196.

Paris, Q. and P. Paris (1985). A von Liebig response function to nitrogen and phosphorus for hay production from irrigated pastures. Grass And Forage Science 40(2): 213-220.