Source: AGRICOLA database (1970-1996)

Absalom, J. P., S. D. Young, et al. (2001). Predicting the transfer of radiocaesium from organic soils to plants using soil characteristics. Journal of Environmental Radioactivity. [print] 52(1): 31-43. {a} School of Biological Sciences, University of Nottingham, Loughborough, Sutton Bonington Campus, Leicestershire, LE12 5RD, UK

Altpeter, F. and U. K. Posselt (2000). Improved plant regeneration from cell suspensions of commercial cultivars, breeding- and inbred lines of perennial ryegrass (Lolium perenne L.). Journal of Plant Physiology. [print] May 156(5-6): 790-796. {a} AG Gentransfer IPK Gatersleben, Corrensstr. 3, 06466, Gatersleben, Germany

Bahmani, I., L. Hazard, et al. (2000). Differences in tillering of long- and short-leaved perennial ryegrass genetic lines under full light and shade treatments. Crop Science. [print] July August 40(4): 1095-1102. {a} Unite d'Ecophysiologie des Plantes Fourrageres, Institut National de Recherche Agronomique, F-86600, Lusignan, France

Balfourier, F., C. Imbert, et al. (2000). Evidence for phylogeographic structure in Lolium species related to the spread of agriculture in Europe. A cpDNA study. Theoretical and Applied Genetics. [print] July 101(1-2): 131-138. {a} Station d'Amelioration des Plantes, INRA, 234 Avenue du Brezet, F-63039, Clermont-Ferrand Cedex, France

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

Bennett, S. J., M. D. Hayward, et al. (2000). Morphological differentiation in four species of the genus Lolium. Genetic Resources and Crop Evolution. [print] June 47(3): 247-255. {a} School of Biological Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK

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

Bonnet, M., O. Camares, et al. (2000). Effects of zinc and influence of Acremonium lolii on growth parameters, chlorophyll a fluorescence and antioxidant enzyme activities of ryegrass (Lolium perenne L. cv Apollo). Journal of Experimental Botany. [print] May 51(346): 945-953. {a} Institut Universitaire de Technologie Genie Biologique, 100 Rue de l'egalite, 15000, Aurillac, France

Boschma, S. P. and J. M. Scott (2000). Measuring and predicting the consequences of drought for a range of perennial grasses on the Northern Tablelands of New South Wales. Australian Journal of Experimental Agriculture. [print] 40(2): 285-297. {a} NSW Agriculture, Calala Lane, Tamworth, NSW, 2340, Australia

Boukhars, L. and A. Rada (2000). Plant exposure to cadmium in moroccan calcareous salty soils treated with sewage sludges and wastewaters. Environmental Technology. [print] June 21(6): 641-652. {a} Laboratoire d'Ecotoxicologie, Departement de Biologie, Faculte des Sciences-Semlalia, Marrakesh, Morocco

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

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

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

Cao, M., D. A. Sleper, et al. (2000). Genomic in situ hybridization (GISH) reveals high chromosome pairing affinity between Lolium perenne and Festuca mairei. Genome . April 43(2): 398-403. {a} Department of Agronomy, University of Missouri, Columbia, MO, 65211, USA

Carruthers, K., B. Prithiviraj, et al. (2000). Intercropping of corn with soybean, lupin and forages: Silage yield and quality. Journal of Agronomy and Crop Science. [print] October 185(3): 177-185. {a} Department of Plant Science, McGill University, 21, 111 Lakeshore, Macdonald Campus, Sainte-Anne-de-Bellevue, PQ, H9X 3V9, Canada

Carruthers, K., B. Prithiviraj, et al. (2000). Intercropping corn with soybean, lupin and forages: Yield component responses. European Journal of Agronomy. March 12(2): 103-115. {a} Department of Plant Science, McGill University, 21, 111 Lakeshore, Macdonald Campus, Ste. Anne-de-Bellevue, Que., Canada

Casler, M. D., D. C. West, et al. (2000). Establishment of temperate pasture species into alfalfa by frost-seeding. Agronomy Journal. Nov. Dec. 91(6): 916-921. {a} Dep. of Agronomy, Univ. of Wisconsin, Madison, WI, 53706-1597, USA

Chadwick, D. R., F. John, et al. (2000). Plant uptake of nitrogen from the organic nitrogen fraction of animal manures: A laboratory experiment. Journal of Agricultural Science. March 134(2): 159-168. {a} Institute of Grassland and Environmental Research, North Wyke, Okehampton, Devon, EX20 2SB, UK

Cheplick, G. P. and C. M. Gutierrez (2000). Clonal growth and storage in relation to competition in genets of the rhizomatous perennial Amphibromus scabrivalvis. Canadian Journal of Botany. [print] April 78(4): 537-546. {a} Department of Biology, College of Staten Island, City University of New York, Staten Island, NY, 10314, USA

Christensen, M. J., W. R. Simpson, et al. (2000). Infection of tall fescue and perennial ryegrass plants by combinations of different Neotyphodium endophytes. Mycological Research. [print] August 104(8): 974-978. {a} AgResearch Grasslands Research Centre, Palmerston North, New Zealand

Clotuche, P. and A. Peeters (2000). Nitrogen uptake by Italian ryegrass after destruction of non-fertilized set-aside covers at different times in autumn and winter. Journal of Agronomy and Crop Science. April 184(2): 121-131. {a} Laboratoire d'Ecologie des Prairies, Universite Catholique de Louvain, Place Croix de Sud, 5 Bte 1, 1348, Louvain-la-Neuve, Belgium

Cody, W. J., K. L. MacInnes, et al. (2000). Alien and invasive native vascular plants along the Norman Wells Pipeline, District of Mackenzie, Northwest Territories. Canadian Field Naturalist. [print] Jan. March 114(1): 126-137. {a} Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, Central Experimental Farm, Ottawa, ON, K1A 0C6, Canada

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

Cookson, W. R., J. S. Rowarth, et al. (2000). The fate of residual nitrogen fertiliser applied to a ryegrass (Lolium perenne L.) seed crop. Australian Journal of Agricultural Research 51(2): 287-294. {a} Soil, Plant and Ecological Sciences Division, Lincoln University, Hilgendorf Building, Canterbury, 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

Davies, D. M. and J. D. Graves (2000). The impact of phosphorus on interactions of the hemiparasitic angiosperm Rhinanthus minor and its host Lolium perenne. Oecologia Berlin. [print] July 124(1): 100-106. {a} Department of Environmental Science, College of Ripon and York St John, Heworth Croft, York, YO3 7SX, UK

Davies, Z. S., D. Mason, et al. (2000). An automated system for measuring gas production from forages inoculated with rumen fluid and its use in determining the effect of enzymes on grass silage. Animal Feed Science and Technology. March 83(3-4): 205-221. {a} Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Wales, SY23 3EB, UK

Dawson, L. A., R. W. Mayes, et al. (2000). Root hydrocarbons as potential markers for determining species composition. Plant Cell and Environment. [print] July 23(7): 743-750. {a} Macaulay Land Use Research Institute, Craigiebuckler, Aberdeen, AB15 8QH, UK

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

Dumont, B., J. F. Maillard, et al. (2000). The effect of the spatial distribution of plant species within the sward on the searching success of sheep when grazing. Grass and Forage Science. [print] June 55(2): 138-145. {a} Centre de Clermont-Fd/Theix, INRA, URH, 63122, Saint-Genes-Champanelle, France

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

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

Giddings, G. (2000). Modelling the spread of pollen from Lolium perenne. The implications for the release of wind-pollinated transgenics. Theoretical and Applied Genetics. April 100(6): 971-974. {a} Institute of Biological Sciences, University of Wales, Cledwyn Building, Aberystwyth, Ceredigion, UK

Gilliland, T. J. and R. L. Mann (2000). Effect of sward cutting management on the relative performance of perennial ryegrass varieties. Journal of Agricultural Science. [print] September 135(2): 113-122. {a} Plant Testing Station, 50 Houston Road, Crossnacreevy, Belfast, BT6 9SH, UK

Goldson, S. L., J. R. Proffitt, et al. (2000). Multitrophic interaction between the ryegrass Lolium perenne, its endophyte Neotyphodium lolii, the weevil pest Listronotus bonariensis, and its parasitoid Microctonus hyperodae. New Zealand Journal of Agricultural Research. [print] June 43(2): 227-233. {a} AgResearch, Lincoln, New Zealand

Graham, J. F., T. Prance, et al. (2000). The effects of grazing management on perennial ryegrass (Lolium perenne L.) herbage mass and persistence in south-eastern Australia. Australian Journal of Experimental Agriculture. [print] 40(2): 207-224. {a} Pastoral and Veterinary Institute, Agriculture Victoria, Hamilton, Vic., 3300, Australia

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

Griffith, S. M. (2000). Changes in dry matter, carbohydrate and seed yield resulting from lodging in three temperate grass species. Annals of Botany London. [print] May 85(5): 675-680. {a} National Forage Seed Production Research Center, USDA ARS, Corvallis, OR, 97331, USA

Grote, M., S. Vrtala, et al. (2000). Expulsion of allergen-containing materials from hydrated rye grass (Lolium perenne) pollen revealed by using immunogold field emission scanning and transmission electron microscopy. Journal of Allergy and Clinical Immunology. [print] June 105(6 Part 1): 1140-1145. {a} Institute of Medical Physics and Biophysics, University of Muenster, Robert-Koch-Strasse 31, 48149, Muenster, Germany

Harding, R. J., C. Huntingford, et al. (2000). Modelling long-term transpiration measurements from grassland in southern England. Agricultural and Forest Meteorology. Feb. 100(4): 309-322. {a} Institute of Hydrology, Crowmarsh Gifford, Wallingford, Oxon, OX10 8BB, UK

Harmon, P., K. Rane, et al. (2000). First report of gray leaf spot on perennial ryegrass in Indiana. Plant Disease. April 84(4): 492. {a} Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN, 47907-1155, USA

Heidenreich, S. C., M. Kruse, et al. (2000). Verification of perennial ryegrass blends (Lolium perenne L.): Comparison of growing tests and bulk seed storage protein electrophoresis. Plant Varieties and Seeds. [print] April 13(1): 61-66. {a} Institut fuer Pflanzenzuechtung, Saatgutforschung und Populationsgenetik, Universitaet Hohenheim, 350, D-70593, Stuttgart, Germany

Hodge, A., D. Robinson, et al. (2000). An arbuscular mycorrhizal inoculum enhances root proliferation in, but not nitrogen capture from, nutrient-rich patches in soil. New Phytologist. March 145(3): 575-584. {a} Department of Biology, The University of York, York, YO10 5YW, UK

Hodge, A., J. Stewart, et al. (2000). Plant N capture and microfaunal dynamics from decomposing grass and earthworm residues in soil. Soil Biology and Biochemistry. [print] October 32(11-12): 1763-1772. {a} Department of Biology, University of York, York, YO10 5YW, UK

Hodge, A., J. Stewart, et al. (2000). Competition between roots and soil micro-organisms for nutrients from nitrogen-rich patches of varying complexity. Journal of Ecology. Feb. 88(1): 150-164. {a} Department of Biology, University of York, York, YO10 5YW, UK

Ishida, S., S. R. Miller, et al. (2000). Enzymatic activity of protoporphyrinogen-IX oxidase from various plant species: Its sensitivity to peroxidizing herbicides. Journal of Pesticide Science 25(1): 18-23. {a} Graduate School of Agricultural Science, Tamagawa University, Machida, Tokyo, 194-8610, Japan

Isopp, H., M. Frehner, et al. (2000). Nitrogen plays a major role in leaves when source-sink relations change: C and N metabolism in Lolium perenne growing under free air CO2 enrichment. Australian Journal of Plant Physiology. [print] 27(8-9): 851-858. {a} Institute of Plant Sciences, Swiss Federal Institute of Technology, Universitatstrasse 2, CH-8092, Zurich, Switzerland

Isopp, H., M. Frehner, et al. (2000). Sucrose-phosphate synthase responds differently to source-sink relations and to photosynthetic rates: Lolium perenne L. growing at elevated pCO2 in the field. Plant Cell and Environment. [print] June 23(6): 597-607. {a} Institute of Plant Sciences, Swiss Federal Institute of Technology, Universitatstrasse 2, 8092, Zurich, Switzerland

Jansen, C., I. Schuphan, et al. (2000). Glufosinate metabolism in excised shoots and leaves of twenty plant species. Weed Science. [print] May June 48(3): 319-326. {a} Department of Biology V (Ecology/Ecotoxicology/Ecochemistry), Technical University of Aachen, Worringer Weg 1, D-52056, Aachen, Germany

Jenkins, G., J. Head, et al. (2000). Probing meiosis in hybrids of Lolium (Poaceae) with a discriminatory repetitive genomic sequence. Chromosoma Berlin. [print] 109(4): 280-286. {a} Institute of Biological Sciences, UW Aberystwyth, Penglais, Cledwyn Building, Aberystwyth, Ceredigion, SY23 3DD, UK

Keating, T. and K. P. O (2000). Comparison of old permanent grassland, Lolium perenne and Lolium multiflorum swards grown for silage: 2. Effects on conservation characteristics in laboratory silos. Irish Journal of Agricultural and Food Research. [print] June 39(1): 25-33. {a} Grange Research Centre, Teagasc, Dunsany, Co. Meath, Ireland

Keating, T. and K. P. O (2000). Comparison of old permanent grassland, Lolium perenne and Lolium multiflorum swards grown for silage: 4. Effects of varying harvesting date. Irish Journal of Agricultural and Food Research. [print] June 39(1): 55-71. {a} Grange Research Centre, Teagasc, Dunsany, Co. Meath, Ireland

Keating, T. and K. P. O (2000). Comparison of old permanent grassland, Lolium perenne and Lolium multiflorum swards grown for silage: 3. Effects of varying fertiliser nitrogen application rate. Irish Journal of Agricultural and Food Research. [print] June 39(1): 35-53. {a} Grange Research Centre, Teagasc, Dunsany, Co. Meath, Ireland

Keating, T. and K. P. O (2000). Comparison of old permanent grassland, Lolium perenne and Lolium multiflorum swards grown for silage: 1. Effects on beef production per hectare. Irish Journal of Agricultural and Food Research. [print] June 39(1): 1-24. {a} Grange Research Centre, Teagasc, Dunsany, Co. Meath, Ireland

Knight, D. A., N. Asokananthan, et al. (2000). Oncostatin M synergises with house dust mite proteases to induce the production of PGE2 from cultured lung epithelial cells. British Journal of Pharmacology. [print] October 131(3): 465-472. {a} Asthma and Allergy Research Unit, Department of Medicine, University of WA, QE II Medical Centre, Verdun Street, 4th Floor "G" Block, Nedlands, WA, 6009, 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

Kuk, Y. I., N. R. Burgos, et al. (2000). Cross- and multiple resistance of diclofop-resistant Lolium spp. Weed Science. [print] July August 48(4): 412-419. {a} Department of Crop, Soil, and Environmental Sciences, University of Arkansas, 276 Altheimer Drive, Fayetteville, AR, 72704, USA

Kurstjens, D. A. G., U. D. Perdok, et al. (2000). Selective uprooting by weed harrowing on sandy soils. Weed Research. [print] October 40(5): 431-447. {a} Wageningen University and Research Centre, Institute of Agricultural and Environmental Engineering (WUR-IMAG), 6700 AA, Wageningen, Netherlands

Kuznetsov, V. K., N. I. Sanzharova, et al. (2000). Accumulation of 137Cs in vegetable production in connection with specific and varietal peculiarities of agricultural crops. Sel'skokhozyaistvennaya Biologiya. [print] Jan. Feb. 1: 64-70.

Kvarnstrom, E., C. Morel, et al. (2000). Changes in the phosphorus availability of a chemically precipitated urban sewage sludge as a result of different dewatering processes. Waste Management and Research. [print] June 18(3): 249-258. {a} Division of Sanitary Engineering, Lulea University of Technology, SE-971 87, Lulea, Sweden

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

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

Lehman, V. G., M. E. Pompei, et al. (2000). Registration of 'Palmer III' perennial ryegrass. Crop Science. [print] July August 40(4): 1201-1202. {a} Plant Science Dep., Cook College, Rutgers Univ., Foran Hall, New Brunswick, NJ, 08901, USA

Leuchtmann, A., D. Schmidt, et al. (2000). Different levels of protective alkaloids in grasses with stroma-forming and seed-transmitted Epichloe/Neotyphodium endophytes. Journal of Chemical Ecology. April 26(4): 1025-1036. {a} Geobotanisches Institut ETH, Zollikerstrasse 107, CH-8008, Zurich, Switzerland

Louahlia, S., P. Laine, et al. (2000). The role of N-remobilisation and the uptake of NH4+ and NO3- by Lolium perenne L. in laminae growth following defoliation under field conditions. Plant and Soil. [print] 220(1-2): 175-187. {a} 950 Physiologie et Biochimie Vegetales, U.A. INRA, Institut de Recherche en Biologie Appliquee, Universite, 14032, Caen Cedex, France

Maejima, A., S. Saiga, et al. (2000). Endophyte infection rate and alkaloid concentrations in seeds of commercial cultivars of perennial ryegrass. Grassland Science. [print] April 46(1): 52-57. {a} Faculty of Agriculture, Iwate University, Morioka, 020-8550, Japan

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

Merrington, G. and C. Madden (2000). Changes in cadmium and zinc phytoavailability in agricultural soil after amendment with papermill sludge and biosolids. Communications in Soil Science and Plant Analysis. March 31(5-6): 759-776. {a} Department of Soil and Water, University of Adelaide, Waite Campus, Adelaide, SA, Australia

Nissen, L. R., N. W. Lepp, et al. (2000). Synthetic zeolites as amendments for sewage sludge-based compost. Chemosphere . July 41(1-2): 265-269. {a} School of Biological and Earth Sciences, Liverpool John Moores University, Byrom Street, Liverpool, L3 3AF, UK

Nsereko, V. L. and J. A. Rooke (2000). Characterisation of peptides in silages made from perennial ryegrass with different silage additives. Journal of the Science of Food and Agriculture. May 80(6): 725-731. {a} Animal Biology Division, SAC, Craibstone Estate, Aberdeen, AB21 9YA, UK

Olesen, J. E., M. Askegaard, et al. (2000). Design of an organic farming crop-rotation experiment. Acta Agriculturae Scandinavica Section B Soil and Plant Science. [print] March 50(1): 13-21. {a} Department of Crop Physiology and Soil Science, Danish Institute of Agricultural Sciences, DK-8830, Tjele, Denmark

Pasakinskiene, I. (2000). Culture of embryos and shoot tips for chromosome doubling in Lolium perenne and sterile hybrids between Lolium and Festuca. Plant Breeding. April 119(2): 185-187. {a} Dotnuva-Akademija, Lithuanian Institute of Agriculture, 5051, Kedainiai, Lithuania

Pasakinskiene, I., C. M. Griffiths, et al. (2000). Anchored simple-sequence repeats as primers to generate species-specific DNA markers in Lolium and Festuca grasses. Theoretical and Applied Genetics. Feb. 100(3-4): 384-390. {a} Dotnuva-Akademija, Lithuanian Institute of Agriculture, 5051, Kedainiai, Lithuania

Pedersen, D. K., R. T. Kane, et al. (2000). First report of gray leaf spot caused by Pyricularia grisea on Lolium perenne in Illinois. Plant Disease. [print] October 84(10). {a} Department of Natural Resources and Environmental Sciences, Champaign-Urbana, IL, 61801, USA

Piquery, L., C. Davoine, et al. (2000). Senescence of leaf sheaths of ryegrass stubble: Changes in enzyme activities related to H2O2 metabolism. Plant Growth Regulation. Jan. 30(1): 71-77. {a} Laboratoire de Physiologie et Biochimie Vegetales, U.A. INRA 950, Institut de Recherche en Biologie Appliquee, Universite, 14032, Caen Cedex, France

Quigley, P. E. (2000). Effects of Neotyphodium lolii infection and sowing rate of perennial ryegrass (Lolium perenne) on the dynamics of ryegrass/subterranean clover (Trifolium subterraneum) swards. Australian Journal of Agricultural Research 51(1): 47-56. {a} Agriculture Victoria, Pastoral and Veterinary Institute, Hamilton, VIC, 3300, Australia

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

Razmovski, V., M. T. J. O, et al. (2000). A new method for simultaneous immunodetection and morphologic identification of individual sources of pollen allergens. Journal of Allergy and Clinical Immunology. April 105(4): 725-731. {a} Institute of Respiratory Medicine, University of Sydney, Room 461, Blackburn Building (D06), Syndney, NSW, 2006, Australia

Reed, K. F. M., A. Leonforte, et al. (2000). Incidence of ryegrass endophyte (Neotyphodium lolii) and diversity of associated alkaloid concentrations among naturalised populations of perennial ryegrass (Lolium perenne L.). Australian Journal of Agricultural Research. [print] 51(5): 569-578. {a} Agriculture Victoria, Pastoral and Veterinary Institute, Hamilton, VIC, 3300, Australia

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

Roderick, H. W., D. Thorogood, et al. (2000). Temperature-dependent resistance to crown rust infection in perennial ryegrass, Lolium perenne. Plant Breeding. Feb. 119(1): 93-95. {a} Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, SY23 3EB, UK

Roldan, R. I., J. Dendauw, et al. (2000). AFLP markers reveal high polymorphic rates in ryegrasses (Lolium spp.). Molecular Breeding. April 6(2): 125-134. {a} Department of Plant Genetics and Breeding, Centre of Agricultural Research-Gent, Caritasstraat 21, 9090, Melle, Belgium

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

Saigusa, M., K. Onozawa, et al. (2000). Effects of porous hydrate calcium silicate on the silica nutrition of turf grasses. Grassland Science. Jan. 45(4): 411-415. {a} Experimental Farm of Tohoku University, Naruko, Miyagi, 989-6711, Japan

Saikkonen, K., J. Ahlholm, et al. (2000). Endophytic fungi in wild and cultivated grasses in Finland. Ecography . [print] June 23(3): 360-366. {a} Dept of Biology, Univ. of Turku, FIN-20014, Turku, Finland

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

Schaeufele, R. and H. Schnyder (2000). Cell growth analysis during steady and non-steady growth in leaves of perennial ryegrass (Lolium perenne L.) subject to defoliation. Plant Cell and Environment. Feb. 23(2): 185-194. {a} Technische Universitaet Muechen, Am Hochanger 1, D-85350, Freising-Weihensteph, Germany

Siciliano, S. D. and C. W. Greer (2000). Plant-bacterial combinations to phytoremediate soil contaminated with high concentrations of 2,4,6-trinitrotoluene. Journal of Environmental Quality. Jan. Feb. 29(1): 311-316. {a} Biotechnology Research Institute, 6100 Royalmount, Montreal, PQ, H4P 2R2, 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

Slack, K., W. J. Fulkerson, et al. (2000). Regrowth of prairie grass (Bromus willdenowii Kunth) and perennial ryegrass (Lolium perenne L.) in response to temperature and defoliation. Australian Journal of Agricultural Research. [print] 51(5): 555-561. {a} NSW Agriculture, Wollongbar Agriculture Institute, Wollongbar, NSW, 2477, Australia

Smith, K. F. and G. A. Kearney (2000). The distribution of errors associated with genotype and environment during the prediction of the water-soluble carbohydrate concentration of perennial ryegrass cultivars using near infrared reflectance spectroscopy. Australian Journal of Agricultural Research. [print] 51(4): 481-486. {a} Agriculture Victoria, Pastoral and Veterinary Institute, Hamilton, VIC, 3300, Australia

Sowerby, A., H. Blum, et al. (2000). The decomposition of Lolium perenne in soils exposed to elevated CO2: Comparisons of mass loss of litter with soil respiration and soil microbial biomass. Soil Biology and Biochemistry. [print] September 32(10): 1359-1366. {a} Department of Biological Sciences, John Tabor Laboratories, Essex University, Wivenhoe Park, Colchester, Essex, CO4 3SQ, UK

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

Streeter, T. C., R. Bol, et al. (2000). Amino acids as a nitrogen source in temperate upland grasslands: The use of dual labelled (13C, 15N) glycine to test for direct uptake by dominant grasses. Rapid Communications in Mass Spectrometry. [print] 14(15): 1351-1355. {a} Department of Biological Science, Institute of Environmental and Natural Sciences, Lancaster University, Lancaster, LA1 4YQ, UK

Sweeney, P. and K. Danneberger (2000). Inheritance of restriction amplification fragment length polymorphisms in perennial ryegrass. Crop Science. [print] July August 40(4): 1126-1129. {a} Dep. of Hort. and Crop Sci., Ohio State Univ., Columbus, OH, 43210, USA

Torstensson, G. and H. Aronsson (2000). Nitrogen leaching and crop availability in manured catch crop systems in Sweden. Nutrient Cycling in Agroecosystems. Feb. 56(2): 139-152. {a} Department of Soil Sciences, Swedish University of Agricultural Sciences, S-75007, Uppsala, Sweden

Tye, A., M. Fullen, et al. (2000). Response of grass leys to applications of calcified seaweed. Communications in Soil Science and Plant Analysis. Feb. 31(3-4): 529-542. {a} Division of Environmental Science, School of Biology, University of Nottingham, Loughborough, Sutton Bonington Campus, Leicestershire, LEI2 5RD, UK

van, G. J. H., A. Gorissen, et al. (2000). Elevated atmospheric carbon dioxide concentration: Effects of increased carbon input in a Lolium perenne soil on microorganisms and decomposition. Soil Biology and Biochemistry. April 32(4): 449-456. {a} Plant Research International, 6700 AA, Wageningen, Netherlands

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

Wang, J. G., F. S. Zhang, et al. (2000). Release of potassium from K-bearing minerals: Effect of plant roots under P deficiency. Nutrient Cycling in Agroecosystems. Jan. 56(1): 45-52. {a} Department of Plant Nutrition, China Agricultural University, Beijing, 100094, China

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

Watson, C. J., C. Jordan, et al. (2000). Inorganic nitrogen in drainage water from grazed grassland in Northern Ireland. Journal of Environmental Quality. Jan. Feb. 29(1): 225-232. {a} Agricultural and Environmental Science Division, Dep. of Agriculture for Northern Ireland, Newforge Lane, Belfast, BT9 5PX, UK

Webster, E. A., J. A. Chudek, et al. (2000). Carbon transformations during decomposition of different components of plant leaves in soil. Soil Biology and Biochemistry. March 32(3): 301-314. {a} Department of Environmental Science, University of Stirling, Stirling, FK9 4LA, UK

Widmer, F., P. J. Hayes, et al. (2000). Substrate preference profiles of proteases released by allergenic pollens. Clinical and Experimental Allergy. [print] April 30(4): 571-576. {a} School of Pathology, University of New South Wales, Sydney, NSW, 2052, Australia

Wilkins, P. W., D. K. Allen, et al. (2000). Differences in the nitrogen use efficiency of perennial ryegrass varieties under simulated rotational grazing and their effects on nitrogen recovery and herbage nitrogen content. Grass and Forage Science. March 55(1): 69-76. {a} Plant Breeding Department, IGER, Plas Gogerddan, Aberystwyth, SY23 3EB, 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

Williams, P. H., J. S. Rowarth, et al. (2000). Recovery of 15N-labelled fertiliser by a perennial ryegrass seed crop and a subsequent wheat crop. Nutrient Cycling in Agroecosystems. Feb. 56(2): 117-123. {a} Canterbury Agriculture and Science Centre, New Zealand Institute for Crop and Food Research Ltd, Christchurch, New Zealand

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

Wouters, T. C. A. E. and G. Booy (2000). Stability of esterases and total proteins during seed storage of perennial ryegrass (Lolium perenne L.) and their use for cultivar discrimination. Euphytica 111(3): 161-168. {a} Centre for Plant Breeding and Reproduction Research (CPRO-DLO), 6700 AA, Wageningen, Netherlands

Zak, N. T., F. M. Kraus, et al. (2000). Histamine receptor expression on peripheral blood lymphocytes is influenced by specific and nonspecific activation. Archivum Immunologiae et Therapiae Experimentalis. [print] 48(2): 107-110. {a} Department of Internal Medicine and Allergology, University Medical School, Traugutta 57/59, 50-417, Wroclaw, Poland

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

Acosta, M. V., Z. Reicher, et al. (1999). The role of tree leaf mulch and nitrogen fertilizer on turfgrass soil quality. Biology and Fertility of Soils 29(1): 55-61. {a} Department of Agronomy, Purdue University, 1150 Lilly Hall, West Lafayette, IN, 47907-1150, 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

Ai, W., J. Zhang, et al. (1999). Phosphorus transfer via mycorrhizal hyphal links from red clover to rye grass. Yingyong Shengtai Xuebao. Oct. 10(5): 615-618. {a} Department of Plant Nutrition, China Agricultural University, Beijing, 100094, China

Amalric, C., H. Sallanon, et al. (1999). Gas exchange and chlorophyll fluorescence in symbiotic and non-symbiotic ryegrass under water stress. Photosynthetica Prague 37(1): 107-112. {a} Laboratoire de 'Biotechnologies Environnement Sante', Universite d'Auvergne, Rue de l'Ecole Normale, 15000, Aurillac, France

Anderson, M. W., P. J. Cunningham, et al. (1999). Perennial grasses of Mediterranean origin offer advantages for central western Victorian sheep pasture. Australian Journal of Experimental Agriculture 39(3): 275-284. {a} Pastoral and Veterinary Institute, Agriculture Victoria, Hamilton, Vic., 3300, Australia

Armstead, I. P., A. Bollard, et al. (1999). Chromosome pairing in Lolium perenne X L. temulentum diploid hybrids: Genetic and cytogenetic evaluation. Heredity . [print] Sept 83(3): 298-303. {a} Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EB, UK

Arumuganathan, K., S. P. Tallury, et al. (1999). Nuclear DNA content of thirteen turfgrass species by flow cytometry. Crop Science. Sept. Oct. 39(5): 1518-1521. {a} Dep. of Crop Science, North Carolina State Univ., Raleigh, NC, 27695, USA

Bardgett, R. D., J. L. Mawdsley, et al. (1999). Plant species and nitrogen effects on soil biological properties of temperate upland grasslands. Functional Ecology. Oct. 13(5): 650-660. {a} Department of Biological Sciences, Institute of Environmental and Natural Sciences, University of Lancaster, Lancaster, LA1 4YQ, UK

Barker, A. M., N. J. Brown, et al. (1999). Do host-plant requirements and mortality from soil cultivation determine the distribution of graminivorous sawflies on farmland? Journal of Applied Ecology. April 36(2): 271-282. {a} Game Conservancy Trust, Fordingbridge, Hants, SP6 1EF, UK

Barnes, J., J. Bender, et al. (1999). Natural and man-made selection for air pollution resistance. Journal of Experimental Botany. Sept. 50(338): 1423-1435. {a} Department of Agricultural and Environmental Science, University of Newcastle Upon Tyne, Ridley Building, Newcastle Upon Tyne, NE1 7RU, 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

Benjaponpitak, S., A. Oro, et al. (1999). The kinetics of change in cytokine production by CD4+ T cells during conventional allergen immunotherapy. Journal of Allergy and Clinical Immunology 103(3 Part 1): 468-475. {a} Department of Pediatrics, Stanford University, Rm H307, Stanford, CA, 94305-5208, USA

Bennet, R. J. and A. Stewart (1999). The aluminium response network in perennial ryegrass (Lolium perenne): II. Water fluxes and ion transport. South African Journal of Plant and Soil. Feb. 16(1): 1-9. {a} ARC-Range and Forage Institute, Pietermaritzburg, 3200, South Africa

Bert, P. F., G. Charmet, et al. (1999). A high-density molecular map for ryegrass (Lolium perenne) using AFLP markers. Theoretical and Applied Genetics. Aug. 99(3-4): 445-452. {a} INRA Station d Amelioration des Plantes, 234 av. du brezet, 63039, Clermont-Ferrand Cedex, France

Bluemmel, M., A. Schroeder, et al. (1999). Estimating ruminal microbial efficiencies in silage-fed cattle: Comparison of an in vitro method with a combination of in situ and in vivo measurements. Journal of Animal Physiology and Animal Nutrition. April 81(2): 57-67. {a} Institute for Animal Production in the Tropics and Subtropics, University of Hohenheim, Stuttgart, Germany

Bluett, S. J., J. Hodgson, et al. (1999). Evaluation of the feeding value of Aries HD perennial ryegrass (Lolium perenne). II. Performance of weaned lambs in summer and autumn. New Zealand Journal of Agricultural Research. Dec. 42(4): 449-458. {a} Institute of Natural Resources, Massey University, Palmerston North, New Zealand

Bluett, S. J., J. Hodgson, et al. (1999). Evaluation of the feeding value of Aries HD perennial ryegrass (Lolium perenne). I. Performance of lactating ewes in spring. New Zealand Journal of Agricultural Research. Dec. 42(4): 441-448. {a} Institute of Natural Resources, Massey University, Palmerston North, New Zealand

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

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

Brereton, A. J. and D. A. McGilloway (1999). Winter growth of varieties of perennial ryegrass (Lolium perenne L.). Irish Journal of Agricultural and Food Research. June 38(1): 1-12. {a} Ecobiops, 21/23 Oliver Plunkett St., Cork, Ireland

Broadley, M. R., N. J. Willey, et al. (1999). A comparison of caesium uptake kinetics in eight species of grass. Journal of Environmental Radioactivity 46(2): 225-236. {a} Horticulture Research International, Wellesbourne, Warwick, CV35 9EF, UK

Cadot, P., H. E. M. Van, et al. (1999). Composition and stability of allergenic extracts made from gamma-irradiated rye grass (Lolium perenne) pollen. Clinical and Experimental Allergy. Sept. 29(9): 1248-1255. {a} Laboratory of Experimental Immunology, Herestraat 49, B-3000, Leuven, Belgium

Cagas, B., M. Flieger, et al. (1999). Concentration of ergot alkaloids in Czech ecotypes of Lolium perenne and Festuca pratensis. Grass and Forage Science. Dec. 54(4): 365-370. {a} Vyzkumna stanice Travinarska, OSEVA PRO s.r.o., 75654, Zubri, Czech Republic

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

Canter, P. H., I. Pasakinskiene, et al. (1999). Chromosome substitutions and recombination in the amphiploid Lolium perenne X Festuca pratensis cv Prior (2n=4x=28). Theoretical and Applied Genetics. April 98(5): 809-814. {a} Plas Gogerddan, Institute of Grassland and Environmental Research, Aberystwyth, Ceredigion, SY23 3EB, UK

Carranca, C., V. A. de, et al. (1999). Biological nitrogen fixation estimated by 15N dilution, natural 15N abundance, and N difference techniques in a subterranean clover-grass sward under Mediterranean conditions. European Journal of Agronomy 10(2): 81-89. {a} Estacao Agronomica Nacional, Quinta do Marques, 2780, Oeiras, Portugal

Carro, M. D., S. Lopez, et al. (1999). Effect of nitrogen supplementation on the in vitro rumen fermentation of nitrogen deficient forages. Archivos de Zootecnia. [print] 48(183): 295-306. {a} Departamento de Produccion Animal I, Universidad de Leon, 24071, Leon, Spain

Casey, I. A., A. J. Brereton, et al. (1999). Effects of sheath tube length on leaf development in perennial ryegrass (Lolium perenne L.). Annals of Applied Biology. April 134(2): 251-257. {a} Teagasc, Moorepark, Fermoy, Co. Cork, Ireland

Casler, M. D. (1999). Spatial variation affects precision of perennial cool-season forage grass trials. Agronomy Journal. Jan. Feb. 91(1): 75-81. {a} Dep. of Agronomy, Univ. of Wisconsin, Madison, WI, 53706-1597, USA

Casler, M. D. (1999). Repeated measures vs. repeated plantings in perennial forage grass trials: An empirical analysis of precision and accuracy. Euphytica 105(1): 33-42. {a} Dep. Agron., Univ. Wis.-Madison, Madison, WI 53706-1597, USA

Castlebury, L. A. and L. M. Carris (1999). Tilletia walkeri, a new species on Lolium multiflorum and L. perenne. Mycologia . Jan. Feb. 91(1): 121-131. {a} USDA-ARS Systematic Botany and Mycology Lab, 10300 Baltimore Avenue, Beltsville, MD, 20705-2350, USA

Chen, C. and D. A. Sleper (1999). FISH and RFLP marker-assisted introgression of Festuca mairei chromosomes into Lolium perenne. Crop Science. Nov. Dec. 39(6): 1676-1679. {a} Dep. of Agronomy, Univ. of Missouri-Columbia, Columbia, MO, 65211-0001, USA

Chen, X., P. Boeckx, et al. (1999). Emission of N2O from rye grass (Lolium perenne L.). Biology and Fertility of Soils 28(4): 393-396. {a} Fac. Agric. Applied Biol. Sci., Univ. Ghent, Coupure 653, B-9000 Ghent, Belgium

Chiy, P. C. and C. J. C. Phillips (1999). Sodium fertilizer application to pasture. 8. Turnover and defoliation of leaf tissue. Grass and Forage Science. Dec. 54(4): 297-311. {a} Animal Science Division, Department of Clinical Veterinary Medicine, University of Cambridge, Cambridge, CB3 0ES, UK

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

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

Cogger, C. G., D. M. Sullivan, et al. (1999). Nitrogen recovery from heat-dried and dewatered biosolids applied to forage grasses. Journal of Environmental Quality. May June 28(3): 754-759. {a} Puyallup Research and Extension Center, Washington State Univ., 7612 Pioneer Way E., Puyallup, WA, 98371-4998, USA

Colbaugh, P. F. and S. P. Metz (1999). Chemical control of algal mats on golf course greens. Mededelingen Faculteit Landbouwkundige en Toegepaste Biologische Wetenschappen Universiteit Gent. [print] 64(3b): 687-692. {a} Texas A and M University Research and Extension Center, 17360 Coit Road, Dallas, TX, 75252-6599, USA

Cone, J. W. and G. A. H. Van (1999). Influence of protein fermentation on gas production profiles. Animal Feed Science and Technology 76(3-4): 251-264. {a} DLO Inst. Anim. Sci. Health, Dep. Ruminant Nutr., P.O. Box 65, NL-8200 AB Lelystad, Netherlands

Cook, R., K. A. Mizen, et al. (1999). Resistance in ryegrasses, Lolium spp., to three European populations of the root-knot nematode, Meloidogyne naasi. Nematology . Oct. 1(6): 661-671. {a} Institute of Grassland and Environmental Research, Aberystwyth, SY23 3EB, UK

Dalley, D. E., J. R. Roche, et al. (1999). Dry matter intake, nutrient selection and milk production of dairy cows grazing rainfed perennial pastures at different herbage allowances in spring. Australian Journal of Experimental Agriculture 39(8): 923-931. {a} Agriculture Victoria Ellinbank, Department of Natural Resources and Environment, Hazeldean Road, RMB 2460, Ellinbank, Vic., 3821, Australia

Dalton, S. J., A. J. E. Bettany, et al. (1999). Co-transformed, diploid Lolium perenne (perennial ryegrass), Lolium multiflorum (Italian ryegrass) and Lolium temulentum (darnel) plants produced by microprojectile bombardment. Plant Cell Reports. May 18(9): 721-726. {a} Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3 EB, 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

Dawson, L. E. R., C. P. Ferris, et al. (1999). The effects of wilting grass before ensiling on silage intake. Grass and Forage Science. Sept. 54(3): 237-247. {a} Agricultural Research Institute of Northern Ireland, Hillsborough, County Down, BT26 6DR, UK

Deckmyn, G. and I. Impens (1999). Seasonal responses of six Poaceae to differential levels of solar UV-B radiation. Environmental and Experimental Botany 41(2): 177-184. {a} Laboratory of Plant Ecology, University of Antwerp UIA, Universiteitsplein 1, 2610, Antwerp, Belgium

Delagarde, R., J. P. Caudal, et al. (1999). Development of an automatic bitemeter for grazing cattle. Annales de Zootechnie Paris. Sept. Oct. 48(5): 329-339. {a} Station de recherches sur la vache laitiere, Inra, 35590, Saint-Gilles, France

Delozier, V., D. Peltier, et al. (1999). Development of SCARs useful for species identification in the genus Lolium. Agronomie Paris. Feb. 19(2): 145-153. {a} Groupe de biochimie et de biologie moleculaire vegetales, laboratoire de genetique, U.F.R. sciences, 2, bd Lavoisier, 49045, Angers cedex, France

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

Dinelli, G. and C. Lucchese (1999). Comparison between capillary and polyacrylamide gel electrophoresis for identification of Lolium species and cultivars. Electrophoresis . Aug. 20(12): 2524-2532. {a} Department of Agronomy, University of Bologna, via Filippo Re 6/8, I-40126, Bologna, Italy

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

Eerens, J. P. J. (1999). A minimal effect of hydroponic culture of perennial ryegrass (Lolium perenne) plants on infection with the endophyte Neotyphodium lolii. New Zealand Journal of Agricultural Research. Dec. 42(4): 513-514. {a} Ruakura Agricultural Research Centre, AgResearch, Hamilton, New Zealand

Emoto, T. and H. Ikeda (1999). Appearance and development of tillers in herbage grass species: 1. Italian ryegrass (Lolium multiflorum Lam.) and perennial ryegrass (Lolium perenne L.). Grassland Science. Oct. 45(3): 210-216. {a} Akita Prefectural College of Agriculture, Ohgata-mura, Akita, 010-0444, Japan

Fahlbusch, B., W. D. Mueller, et al. (1999). Quantification of group 1 and group 5 allergens in extracts of several grass species. Allergologie . Aug. 22(8): 460-466. {a} Institut fuer Klinische Immunologie, Friedrich-Schiller-Universitaet, Am Johannisfriedhof 3, D-07740, Jena, Germany

Feng, Y., P. H. Dernoeden, et al. (1999). A simple Pythium aphanidermatum field inoculation technique for perennial ryegrass. Hortscience . April 34(2): 301-304. {a} Department of Natural Resource Sciences and Landscape Architecture, University of Maryland, College Park, MD, 20742-5821, USA

Fransen, B., J. Blijjenberg, et al. (1999). Root morphological and physiological plasticity of perennial grass species and the exploitation of spatial and temporal heterogeneous nutrient patches. Plant and Soil 211(2): 179-189. {a} Nature Conservation and Plant Ecology Group, Department of Environmental Sciences, Wageningen Agricultural University, Bornsesteeg 69, 6708 PD, Wageningen, Netherlands

Fraser, L. H. and J. P. Grime (1999). Aphid fitness on 13 grass species: A test of plant defence theory. Canadian Journal of Botany. Dec. 77(12): 1783-1789. {a} Department of Biology, University of Akron, Akron, OH, USA

Fraser, M. L., F. C. A. Rose, et al. (1999). Registration of 'Sonata' perennial ryegrass. Crop Science. Sept. Oct. 39(5). {a} Pure Seed Testing, Inc., Rolesville, NC, 27571, USA

Frost, J. P. and R. C. Binnie (1999). The effect of mechanical treatment on the drying rates of Italian and perennial ryegrasses. Grass and Forage Science. June 54(2): 144-154. {a} Agricultural Research Institute of Northern Ireland, Hillsborough, Down, BT26 6DR, UK

Galussi, A. A., L. R. Zimmermann, et al. (1999). Using seedlings hairiness to identify varieties of oats, rice and wheat. Seed Science and Technology 27(3): 1047-1050. {a} Facultad de Ciencias Agropecuarias, Universidad Nacional de Entre Rios, 3100, Parana, Entre Rios, Argentina

Garay, A. H., C. Matthew, et al. (1999). Tiller size/density compensation in perennial ryegrass miniature swards subject to differing defoliation heights and a proposed productivity index. Grass and Forage Science. Dec. 54(4): 347-356. {a} Programa de Ganaderia, Colegio de Postgraduados, Montecillo, Texcoco Edo. de Mexico, CP 56230, Mexico

Garnier, E., J. L. Salager, et al. (1999). Relationships between photosynthesis, nitrogen and leaf structure in 14 grass species and their dependence on the basis of expression. New Phytologist. July 143(1): 119-129. {a} Centre d'Ecologie Fonctionnelle et Evolutive (CNRS-UPR 9056), 1919, Route de Mende, 34293, Montpellier Cedex 5, France

Gatenby, W. A., F. S. C. Munday, et al. (1999). Terpendole M, a novel indole-diterpenoid isolated from Lolium perenne infected with the endophytic fungus Neotyphodium lolii. Journal of Agricultural and Food Chemistry 47(3): 1092-1097. {a} Ruakura Agricultural Research Centre, New Zealand Pastoral Agriculture Research Institute Ltd., Hamilton, New Zealand

Gautier, H., G. C. Varlet, et al. (1999). Tillering responses to the light environment and to defoliation in populations of perennial ryegrass (Lolium perenne L.) selected for contrasting leaf length. Annals of Botany London 83(4): 423-429. {a} Institut National de Recherche Agronomique (INRA)-Unite de Bioclimatologie, Domaine de St Paul, Site Agroparc, 84914, Avignon Cedex 9, France

Gorissen, A. and M. F. Cotrufo (1999). Elevated carbon dioxide effects on nitrogen dynamics in grasses, with emphasis on rhizosphere processes. Soil Science Society of America Journal. Nov. Dec. 63(6): 1695-1702. {a} Dep. of Soil Chemistry and Soil Ecology, Research Institute for Agrobiology and Soil Fertility (AB), 6700 AA, Wageningen, Netherlands

Guerrand, D., J. C. Avice, et al. (1999). Fructan biosynthesis in Lolium perenne: Appraisal of soluble and insoluble enzymatic pathways. New Phytologist 141(1): 109-118. {a} Laboratoire de Physiologie et Biochimie Vegetales, UA INRA, IRBA, Universite, 14032, Caen Cedex, France

Hahn, H. and W. Schoeberlein (1999). Characterization and identification of Festulolium hybrids by electrophoresis of seed proteins. Seed Science and Technology 27(2): 525-542. {a} Landwirtschaftliche Fakultaet, Lehrgebiet Saatgutwirtschaft, Martin-Luther-Universitaet Halle-Wittenberg, Institut fuer Acker- und Pflanzenbau, Emil-Abderhalden-Str. 27, 06108, Halle, Germany

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

Hartikainen, H. and T. Xue (1999). The promotive effect of selenium on plant growth as triggered by ultraviolet irradiation. Journal of Environmental Quality. July Aug 28(4): 1372-1375. {a} Dep. of Applied Chemistry and Microbiology, Univ. of Helsinki, 00014, Helsinki, Finland

Haugland, E. and W. R. J. Froud (1999). Improving grasslands: The influence of soil moisture and nitrogen fertilization on the establishment of seedlings. Journal of Applied Ecology. April 36(2): 263-270. {a} Department of Herbology, Norwegian Crop Research Institute, Plant Protection Centre, 1432, Aas, Norway

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

Heidenreich, S. C., M. Kruse, et al. (1999). Verification of perennial ryegrass blends (Lolium perenne L.) using bulk seed storage protein electrophoresis. Plant Varieties and Seeds. April 12(1): 1-9. {a} Institut fuer Pflanzenzuechtung, Saatgutforschung und Populationsgenetik (350), Universitaet Hohenheim, D-70593, Stuttgart, Germany

Hesse, U. and G. C. M. Latch (1999). Influence of Neotyphodium lolii and barley yellow dwarf virus, individually and combined, on the growth of Lolium perenne. Australasian Plant Pathology 28(3): 240-247. {a} Institut fuer Acker und Pflanzenbau, Lehrgebiet Saatgutwirtschaft, Martin-Luther-Universitaet Halle-Wittenberg, 06099, Halle, Germany

Hodge, A., D. Robinson, et al. (1999). Why plants bother: Root proliferation results in increased nitrogen capture from an organic patch when two grasses compete. Plant Cell and Environment. July 22(7): 811-820. {a} Department of Biology, University of York, York, YO10 5YW, UK

Hodge, A., D. Robinson, et al. (1999). Nitrogen capture by plants grown in N-rich organic patches of contrasting size and strength. Journal of Experimental Botany. July 50(336): 1243-1252. {a} Department of Biology, The University of York, York, YO10 5YW, UK

Hodge, A., J. Stewart, et al. (1999). Plant, soil fauna and microbial responses to N-rich organic patches of contrasting temporal availability. Soil Biology and Biochemistry. Oct. 31(11): 1517-1530. {a} Department of Biology, University of York, York, YO10 5YW, UK

Hopper, J. L. and D. R. Parker (1999). Plant availability of selenite and selenate as influenced by the competing ions phosphate and sulfate. Plant and Soil 210(2): 199-207. {a} Soil and Water Sciences Section, Department of Environmental Sciences, University of California, Riverside, CA, USA

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

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

Hsiang, T., N. Matsumoto, et al. (1999). Biology and management of typhula snow molds of turfgrass. Plant Disease. Sept. 83(9): 788-798. {a} University of Guelph, Guelph, ON, Canada

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.). 1. Recovery and viability of seeds passaged through digestive tract of cattle. Grassland Science. July 45(2): 157-162. {a} Chugoku National Agricultural Experiment Station, Kawai, Oda, Shimane, 694-0013, Japan

Jensen, B., P. Sorensen, et al. (1999). Availability of nitrogen in 15N-labeled ruminant manure components to successively grown crops. Soil Science Society of America Journal. March April 63(2): 416-423. {a} Dep. of Plant Physiology and Soil Science, Res. Ctr. Foulum, Danish Inst. Agric. Sciences, DK-8830, Tjele, Denmark

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

Kennedy, P. M., J. B. Lowry, et al. (1999). Isolation of grass cell walls as neutral detergent fibre increases their fermentability for rumen micro-organisms. Journal of the Science of Food and Agriculture. March 79(4): 544-548. {a} CSIRO Tropical Agriculture, PO Indooroopilly, QLD, 4068, Australia

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

Kimbeng, C. A. (1999). Genetic basis of crown rust resistance in perennial ryegrass, breeding strategies, and genetic variation among pathogen populations: A review. Australian Journal of Experimental Agriculture 39(3): 361-378. {a} Bureau of Sugar Experiment Stations, Mackay, Qld, 4741, Australia

Kinder, M. and I. Vagts (1999). Estuarine salt marsh vegetation and brackish reeds of the Weser-Estuary. Abhandlungen Naturwissenschaftlichen Verein zu Bremen. [print] 44(2-3): 523-544. {a} Abt. Geobotanik und Naturschutz, Fachbereich 2: Biologie/Chemie, Institut fuer Oekologie und Evolutionsbiologie, Universitaet Bremen, D - 28334, Bremen, Germany

King, I. P., W. G. Morgan, et al. (1999). Introgression mapping in the grasses. II. Meiotic analysis of the Lolium perenne/Festuca pratensis triploid hybrid. Heredity 82(1): 107-112. {a} Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion, Wales, SY23 3EB, UK

Kolliker, R., F. J. Stadelmann, et al. (1999). Genetic variability of forage grass cultivars: A comparison of Festuca pratensis Huds., Lolium perenne L., and Dactylis glomerata L. Euphytica 106(3): 261-270. {a} Institute of Plant Sciences, Swiss Federal Institute of Technology, CH-8092, Zurich, Switzerland

Krebs, R., S. K. Gupta, et al. (1999). Gravel sludge as an immobilizing agent in soils contaminated by heavy metals: A field study. Water Air and Soil Pollution. Oct. 115(1-4): 465-479. {a} Institute of Environmental Protection and Agriculture Liebefeld (IUL), Swiss Federal Research Station for Agroecology and Agriculture (FAL), CH-3003, Bern, Switzerland

Kubik, C., W. A. Meyer, et al. (1999). Assessing the abundance and polymorphism of simple sequence repeats in perennial ryegrass. Crop Science. July Aug 39(4): 1136-1141. {a} Dep. of Ecology and Evolutionary Biology, University of California, Irvine, 321 Steinhaus Hall, Irvine, CA, 92697-2525, USA

Kulli, B., M. Balmer, et al. (1999). The influence of nitrilotriacetate on heavy metal uptake of lettuce and ryegrass. Journal of Environmental Quality. Nov. Dec. 28(6): 1699-1705. {a} Inst. of Terrestrial Ecology (ITO), ETH Zurich, Grabenstr. 3, CH-8952, Schlieren, Switzerland

Kuzyakov, Y., A. Kretzschmar, et al. (1999). Contribution of Lolium perenne rhizodeposition to carbon turnover of pasture soil. Plant and Soil 213(1-2): 127-136. {a} Institute of Soil Science and Land Evaluation, University of Hohenheim, Emil-Wolff-Strasse 27, D-70599, Stuttgart, Germany

Lantinga, E. A., P. J. A. G. Deenen, et al. (1999). Herbage and animal production responses to fertilizer nitrogen in perennial ryegrass swards. II. Rotational grazing and cutting. Netherlands Journal of Agricultural Science. [print] December 47(3-4): 243-261. {a} Group of Biological Farming Systems, Wageningen University, Marijkeweg 22, NL-6709 PG, Wageningen, Netherlands

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

Lepiece, D., A. Thompson, et al. (1999). Florasulam Primus, a new selective herbicide for the control of broad-leaved weeds in young grass. Mededelingen Faculteit Landbouwkundige en Toegepaste Biologische Wetenschappen Universiteit Gent. [print] 64(3b): 693-712. {a} Dow AgroSciences, B-2610, Wilrijk, Belgium

Lewis, G. C. and R. O. Clements (1999). Effect of combined insecticide and fungicide treatments on newly sown swards of Italian and perennial ryegrass using two methods of sowing, two rates of seed and N fertilizer, with and without herbicide. Grass and Forage Science. June 54(2): 155-162. {a} North Wyke Research Station, Institute of Grassland and Environmental Research, Okehampton, Devon, EX20 2SB, UK

Lingvall, P. and P. Lattemae (1999). Influence of hexamine and sodium nitrite in combination with sodium benzoate and sodium propionate on fermentation and hygienic quality of wilted and long cut grass silage. Journal of the Science of Food and Agriculture 79(2): 257-264. {a} Dep. Animal Nutr. Management, Swedish Univ. Agric. Sci., Kungsangen Res. Centre, 753 23 Uppsala, Sweden

Logan, K. A. B. and R. J. Thomas (1999). Interactions between N supply and N uptake by perennial ryegrass, 15N recovery and soil pH for four acid Scottish soils. Grass and Forage Science. March 54(1): 42-51. {a} CIAT, Cali, Colombia

Loiseau, P. and J. F. Soussana (1999). Elevated (CO2), temperature increase and N supply effects on the accumulation of below-ground carbon in a temperate grassland ecosystem. Plant and Soil 212(2): 123-134. {a} Fonctionnement et Gestion de l'Ecosysteme Prairial, INRA-Agronomie, 234, Av. du Brezet, F-63039, Clermont-Ferrand, Cedex 2, France

Loiseau, P. and J. F. Soussana (1999). Elevated (CO2), temperature increase and N supply effects on the turnover of below-ground carbon in a temperate grassland ecosystem. Plant and Soil 210(2): 233-247. {a} Fonctionnement et Gestion de l''Ecosysteme Prairial, Unite d''Agronomie, INRA, 234, Av. du Brezet, F-63039, Clermont-Ferrand Cedex, 2, France

Lomholt, A. (1999). A device measuring physiologically determined seed shedding in grasses. Seed Science and Technology 27(2): 791-794. {a} Research Centre, Danish Institute of Agricultural Sciences, Flakkebjerg, 4200, Slagelse, Denmark

Louahlia, S., J. H. Macduff, et al. (1999). Nitrogen reserve status affects the dynamics of nitrogen remobilization and mineral nitrogen uptake during recovery of contrasting cultivars of Lolium perenne from defoliation. New Phytologist. June 142(3): 451-462. {a} UA INRA 950 Physiologie et Biochimie Vegetales, Institut de Recherche en Biologie Appliquee, Universite, 14032, Caen Cedex, France

Lovborg, U., P. J. Baker, et al. (1999). Subtribe-specific monoclonal antibodies to Lolium perenne. Clinical and Experimental Allergy. July 29(7): 973-981. {a} Institute of Respiratory Medicine, University of Sydney, Room 461 Blackburn Building (D06), Sydney, NSW, 2006, Australia

Lowe, K. F., T. M. Bowdler, et al. (1999). Performance of temperate perennial pastures in the Australian subtropics. 2. Milk production. Australian Journal of Experimental Agriculture 39(6): 677-683. {a} Department of Primary Industries, Mutdapilly Research Station, Australian Tropical Dairy Institute, Ipswich, QLD, 4306, Australia

Lowe, K. F., T. M. Bowdler, et al. (1999). Performance of temperate perennial pastures in the Australian subtropics. 1. Yield, persistence and pasture quality. Australian Journal of Experimental Agriculture 39(6): 663-676. {a} Department of Primary Industries, Mutdapilly Research Station, Australian Tropical Dairy Institute, Ipswich, QLD, 4306, Australia

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

Mackie, D. L. A. (1999). Nitrogen uptake and root morphological responses of defoliated Lolium perenne (L.) to a heterogeneous nitrogen supply. Plant and Soil 209(1): 111-118. {a} Macaulay Land Use Research Institute, Craigiebuckler, Aberdeen, UK

Magid, J., C. Kjaergaard, et al. (1999). Drying and rewetting of a loamy sand soil did not increase the turnover of native organic matter, but retarded the decomposition of added 14C-labelled plant material. Soil Biology and Biochemistry 31(4): 595-602. {a} Department of Agricultural Sciences, Royal Veterinary and Agricultural University (KVL), Copenhagen, DK 1871 FC, Denmark

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

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

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

Matsi, T. and V. Z. Keramidas (1999). Fly ash application on two acid soils and its effect on soil salinity pH, B, P and on ryegrass growth and composition. Environmental Pollution 104(1): 107-112. {a} Soil Sci. Lab., Aristotle Univ., Thessaloniki 54006, Greece

Matthies, D. and P. Egli (1999). Response of a root hemiparasite to elevated CO2 depends on host type and soil nutrients. Oecologia Berlin. July 120(1): 156-161. {a} Institut fur Umweltwissenschaften, Universitat Zurich, Winterthurerstr. 190, CH-8057, Zurich, Switzerland

Mazur, A. R. and J. S. Rice (1999). Impact of overseeding bermudagrass with various amounts of perennial ryegrass for winter putting turf. Hortscience . Aug. 34(5): 864-866. {a} Department of Crop and Soil Environmental Science, Clemson University, Clemson, SC, 29634-0359, USA

McGilloway, D. A., A. Cushnahan, et al. (1999). The relationship between level of sward height reduction in a rotationally grazed sward and short-term intake rates of dairy cows. Grass and Forage Science. June 54(2): 116-126. {a} Grange Research Centre, Teagasc, Dunsany, Meath, Ireland

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

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

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

Mora, M. L., B. Schnettler, et al. (1999). Effect of liming and gypsum on soil chemistry, yield, and mineral composition of ryegrass grown in an acidic Andisol. Communications in Soil Science and Plant Analysis. May 30(9-10): 1251-1266. {a} Instituto de Agroindustria, Universidad de La Frontera, Casilla 54-D, Temuco, Chile

Morvan, B. A., J. Boucaud, et al. (1999). Influence of initial levels of carbohydrates, fructans, nitrogen, and soluble proteins on regrowth of Lolium perenne L. cv. Bravo following defoliation. Journal of Experimental Botany. [print] Dec 50(341): 1817-1826. {a} U.A. INRA Physiologie et Biochimie Vegetales, Institut de Biologie en Recherche Appliquee, Universite Esplanade de la Paix, 14032, Caen Cedex, France

Morvan, B. A., N. Pavis, et al. (1999). Partitioning of reserve and newly assimilated carbon in roots and leaf tissues of Lolium perenne during regrowth after defoliation: Assessment by 13C steady-state labelling and carbohydrate analysis. Plant Cell and Environment. Sept. 22(9): 1097-1108. {a} U.A.INRA Physiologie et Biochimie Vegetales, IRBA, Universite, Esplanade de la Paix, 14032, Caen, Cedex, France

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

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

Naffaa, W., C. Astier, et al. (1999). Creation of stable associations between perennial ryegrass or tall fescue and fungal endophytes. Agronomie Paris. Feb. 19(2): 133-144. {a} Unite de pathologie vegetale et mycologie, centre de Clermont-Ferrand, Inra, 234, avenue du Brezet, 63039, Clermont-Ferrand cedex, 02, France

Naffaa, W., C. Ravel, et al. (1999). Peroxidase activity of perennial ryegrass and tall fescue seedlings artificially infected with endophytes. Agronomie Paris. Oct. Nov. 19(7): 611-619. {a} Unite de pathologie vegetale et mycologie, Inra, 234, avenue du Brezet, 63039, Clermont-Ferrand cedex, 02, France

Neilson, R. and D. J. F. Brown (1999). Feeding on different host plants alters the natural abundances of delta13C and delta15N in Longidoridae (Nemata). Journal of Nematology. March 31(1): 20-26. {a} Nematology Unit, Scottish Crop Research Institute, Dundee, DD2 5DA, UK

Nie, Z. N., D. J. Barker, et al. (1999). Changes in the population of germinated seed in a hill pasture during and after a pastoral fallow. Grass and Forage Science. June 54(2): 127-136. {a} Department of Animal Production (Glenormiston), University of Melbourne, Terang, VIC, 3264, Australia

Norton, L. R., L. G. Firbank, et al. (1999). Effects of Free-Air CO2 Enrichment (FACE) on experimental grassland communities. Functional Ecology. June 13(Suppl. 1): 38-44. {a} School of Biological Sciences, University of East Anglia, Norwich, Norfolk, NR4 7TJ, UK

Nsereko, V. L. and J. A. Rooke (1999). Effects of peptidase inhibitors and other additives on fermentation and nitrogen distribution in perennial ryegrass silage. Journal of the Science of Food and Agriculture. April 79(5): 679-686. {a} Animal Biology Division, SAC, Craibstone Estate, Aberdeen, AB21 9YA, UK

O, D. C. and P. M. Attiwill (1999). A comparative study of habitats of the Golden Sun Moth Synemon plana Walker (Lepidoptera: Castniidae): Implications for restoration. Biological Conservation. July 89(2): 131-141. {a} Conservation and Research Department, Zoological Parks and Gardens Board, Elliott Ave, Parkville, VIC, 3052, Australia

Oertel, C. and F. Matzk (1999). Introgression of crown rust resistance from Festuca spp. into Lolium multiflorum. Plant Breeding. Dec. 118(6): 491-496. {a} Institut fuer Pflanzengenetik und Kulturpflanzenforschung (IPK), Corrensstrasse 3, D-06466, Gatersleben, Germany

Oklejewicz, K. (1999). A locality for Artemisia biennis (Asteraceae) in Rzeszow (south-eastern Poland). Fragmenta Floristica et Geobotanica Series Polonica 6: 297. {a} Zaklad Przyrodniczych Podstaw Produkcji Rolniczej, Akademia Rolnicza im. H. Kollataja w krakowie, Wydzial Ekonomii w Rzeszowie, ul. Cwiklinskiej 2, PL-35-601, Rzeszow, Poland

Okora, J. O., C. E. Watson, et al. (1999). Comparison of botanical characteristics and seedling root fluorescence for distinguishing Italian and perennial ryegrass. Seed Science and Technology 27(2): 721-730. {a} Mississippi Agricultural and Forestry Experiment Station, Mississippi State, MS, 39762, USA

Oyedele, D. J., P. Schjonning, et al. (1999). Aggregation and organic matter fractions of three Nigerian soils as affected by soil disturbance and incorporation of plant material. Soil and Tillage Research. March 50(2): 105-114. {a} Department of Crop Physiology and Soil Science, Research Centre Foulum, Danish Institute of Agricultural Sciences, DK-8830, Tjele, Denmark

Paterson, E. and A. Sim (1999). Rhizodeposition and C-partitioning of Lolium perenne in axenic culture affected by nitrogen supply and defoliation. Plant and Soil 216(1-2): 155-164. {a} Plants Group, The Macaulay Land Use Research Institute, Craigiebuckler, Aberdeen, AB15 8QH, UK

Pfender, W. F. and S. S. Vollmer (1999). Freezing temperature effect on survival of Puccinia graminis subsp. graminicola in Festuca arundinacea and Lolium perenne. Plant Disease. Nov. 83(11): 1058-1062. {a} National Forage Seed Production Research Center, USDA-ARS, 3450 S.W. Campus Way, Corvallis, OR, 97331, USA

Pillard, D. A. and D. L. DuFresne (1999). Toxicity of formulated glycol deicers and ethylene and propylene glycol to Lactuca sativa, Lolium perenne, Selenastrum capricornutum, and Lemna minor. Archives of Environmental Contamination and Toxicology. July 37(1): 29-35. {a} ENSR, 4303 West LaPorte Ave., Fort Collins, CO, 80521, USA

Raistrick, N. (1999). An automated relative-addition rate nutrient-dosing system for use in flowing solution culture. Journal of Experimental Botany 50(331): 263-267. {a} Inst. Grassland Environ. Res., Aberystwyth Res. Cent., Plas Gogerddan, Aberystwyth SY23 3EB, UK

Ravel, C., F. Balfourier, et al. (1999). Enhancement of yield and persistence of perennial ryegrass inoculated with one endophyte isolate in France. Agronomie Paris. Oct. Nov. 19(7): 635-644. {a} Unite d'amelioration des plantes, Inra, 234 avenue du Brezet, 63039, Clermont-Ferrand cedex, 02, France

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

Reicher, Z. J., D. V. Weisenberger, et al. (1999). Turf safety and effectiveness of dithiopyr and quinclorac for large crabgrass (Digitaria sanguinalis) control in spring-seeded turf. Weed Technology. April June 13(2): 253-256. {a} Department of Agronomy, Purdue University, 1150 Lilly Hall, West Lafayette, IN, 47907-1150, USA

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

Richmond, D. S. and D. J. Shetlar (1999). Larval survival and movement of bluegrass webworm in mixed stands of endophytic perennial ryegrass and Kentucky bluegrass. Journal of Economic Entomology. Dec. 92(6): 1329-1334. {a} Department of Entomology, Ohio State University, OARDC, Wooster, OH, USA

Robinson, D., A. Hodge, et al. (1999). Plant root proliferation in nitrogen-rich patches confers competitive advantage. Proceedings of the Royal Society of London Series B 266(1418): 431-435. {a} Cellular and Environmental Physiology Department, Scottish Crop Research Institute, Dundee, DD2 5DA, UK

Rodriguez, D., O. M. Van, et al. (1999). LINGRA-CC: A sink-source model to simulate the impact of climate change and management on grassland productivity. New Phytologist. Nov. 144(2): 359-368. {a} Laboratory of Theoretical Production Ecology, 6700AK, Wageningen, Netherlands

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

Rothwell, N. L. and D. R. Smitley (1999). Impact of golf course mowing practices on Ataenius spretulus (Coleoptera: Scarabaeidae) and its natural enemies. Environmental Entomology. June 28(3): 358-366. {a} Department of Entomology, University of Massachusetts, Fernald Hall, Amherst, MA, 01003, USA

Runge, F. (1999). Succession of some plant societies at the island Baltrum. Abhandlungen Naturwissenschaftlichen Verein zu Bremen. [print] 44(2-3): 545-549. {a} Diesterwegstr. 63, D - 48159, Muenster, Germany

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

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

Salaun, C., S. W. M. van, et al. (1999). In situ degradation of perennial rye grass from grazed pastures during the season at two levels of nitrogen fertilization. Annales de Zootechnie Paris. Jan. Feb. 48(1): 35-46. {a} Department of Ruminant Nutrition, DLO-Institute for Animal Science and Health, 8200 AB, Lelystad, Netherlands

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Schnyder, H. and V. R. de (1999). Fluxes of reserve-derived and currently assimilated carbon and nitrogen in perennial ryegrass recovering from defoliation. The regrowing tiller and its component functionally distinct zones. Plant Physiology Rockville. April 119(4): 1423-1435. {a} Technische Universitaet Muenchen, D-85350, Freising-Weihenstephan, Germany

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

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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

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Staff, I. A., G. Schappi, et al. (1999). Localisation of allergens in ryegrass pollen and in airborne micronic particles. Protoplasma 208(1-4): 47-57. {a} School of Botany, The University of Melbourne, Parkville, VIC, 3052, Australia

Stenberg, M., H. Aronsson, et al. (1999). Soil mineral nitrogen and nitrate leaching losses in soil tillage systems combined with a catch crop. Soil and Tillage Research. March 50(2): 115-125. {a} Department of Soil Sciences, Division of Soil 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

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

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

Sugiyama, S. (1999). Genetic variation in the relative dominance of mixed swards: Potential influence and its mechanism. Grassland Science. Jan. 44(4): 303-309. {a} Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki, 036-8561, Japan

Suphioglu, C., D. Mawdsley, et al. (1999). Molecular cloning, expression and immunological characterisation of Lol p 5C, a novel allergen isoform of rye grass pollen demonstrating high IgE reactivity. FEBS Letters. Dec. 462(3): 435-441. {a} Department of Allergy, Asthma and Clinical Immunology, Monash University Medical School, Alfred Hospital, Commercial Road, Prahran, VIC, Australia

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Vierheilig, H., A. Boeckenhoff, et al. (1999). In vivo observations of the arbuscular mycorrhizal fungus Glomus mosseae in roots by confocal laser scanning microscopy. Mycological Research. March 103(3): 311-314. {a} Institut fuer Phytopathologie, Christian-Albrecht-Universitaet Kiel, Hermann Rodewald-Strasse 9, 24118, Kiel, Germany

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

Waller, R. A., P. W. G. Sale, et al. (1999). Tactical versus continuous stocking for persistence of perennial ryegrass (Lolium perenne L.) in pastures grazed by sheep in south-western Victoria. Australian Journal of Experimental Agriculture 39(3): 265-274. {a} Pastoral and Veterinary Institute, Agriculture Victoria, Hamilton, Vic., 3300, Australia

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Wivstad, M. (1999). Nitrogen mineralization and crop uptake of N from decomposing 15N labelled red clover and yellow sweetclover plant fractions of different age. Plant and Soil 208(1): 21-31. {a} Department of Crop Production Science, Swedish University of Agricultural Sciences, S-750 07, Uppsala, Sweden

Yamashita, M., H. Sawada, et al. (1999). Genetic diversity of perennial ryegrass (Lolium perenne L.) collected from Japan, France and Germany. Grassland Science. Oct. 45(3): 290-298. {a} Faculty of Agriculture, Shizuoka University, Shizuoka, 422-8529, Japan

Yilmaz, N., Z. Bayraktaroglu, et al. (1999). Efficiency of some in vitro allergy tests for evaluating atopy in children and adults. Clinical Chemistry and Laboratory Medicine. Oct. 37(10): 981-985. {a} Fevzi Cakmak P.K 1163, Sehitkamil, Gaziantep, Turkey

Young, W. C., III, M. E. Mellbye, et al. (1999). Residue management of perennial ryegrass and tall fescue seed crops. Agronomy Journal. July Aug 91(4): 671-675. {a} Dep. of Crop and Soil Science, Oregon State Univ., Corvallis, OR, 97331-3002, USA

Zeller, F. J. (1999). Gene transfer with the aid of genome and chromosome manipulations between Festuca and Lolium species. Journal of Applied Botany. May 73(1-2): 43-49. {a} Institut fuer Pflanzenbau und Pflanzenzuechtung, Technische Universitaet Muenchen, D-85350, Freising-Weihenstephan, Germany

Zubillaga, M. S. and L. Giuffre (1999). Soil phosphorus mobilization in different taxonomic orders. Journal of Plant Nutrition and Soil Science. April 162(2): 201-205. {a} Soils Department, Facultad de Agronomia, Universidad de Buenos Aires, Av. San Martin 4453, 1417, Buenos Aires, Argentina

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

Acosta, G., C. Cangiano, et al. (1998). Grazing and nitrogen fertilization effect on the growth and quality of perennial ryegrass (Lolium perenne). Investigacion Agraria Produccion y Proteccion Vegetales 13(1-2): 21-27. {a} Facultad Agronomia, Universidad Buenos Aires, Avda. San Martin 4453, 1417 Buenos Aires, Argentina

Allen, R. B. (1998). Germination, growth, reproduction, and population structure of three subspecies of Lepidium sisymbrioides (Brassicaceae) with respect to taxon rarity. New Zealand Journal of Botany 36(3): 439-452. {a} Landcare Res., Private Bag 1930, Dunedin, New Zealand

Allsopp, N. (1998). Effect of defoliation on the arbuscular mycorrhizas of three perennial pasture and rangeland grasses. Plant and Soil 202(1): 117-124. {a} ARC Range Forage Inst., c/o Botany Dep., Univ. Western Cape, Private Bag X17, Bellville 7535, South Africa

Askbrant, S. and J. Sandalls (1998). Root uptake of 137Cs and 90Sr by rye-grass on various soils in the CIS. Journal of Environmental Radioactivity 38(1): 85-95. {a} ALEGLO FOU, Sulitelmavaegen 22, 161 33 Bromma, Sweden

Aytasheva, Z. G. (1998). Green-house harvested ryegrass plants contain thioredoxin-like gene fragment in the pollen. Biotronics 27: 53-60. {a} Murat Aytkhozhin Institute of Molecular Biology and Biochemistry, 86 Dosmukhamedov st., Almaty, 480 012, Kazakhstan

Bailey, J. S. (1998). Varying the ratio of 15N-labelled ammonium and nitrate-N supplied to perennial ryegrass: Effects on nitrogen absorption and assimilation, and plant growth. New Phytologist 140(3): 505-518. {a} Dep. Agric. Northern Ireland, Agric. Environ. Sci. Div., Newforge Lane, Belfast BT9 5PX, UK

Bain, R. A., E. L. Raynor, et al. (1998). Effect of nitrogen on interactions between ryegrass mosaic virus (RMV) and Lolium species in mixed swards. Annals of Applied Biology 132(2): 313-324. {a} Plant Biol. Dep., SAC, Auchincruive, Ayr KA6 5HW, UK

Bakker, M. L., I. J. Gordon, et al. (1998). Effects of sward structure on the diet selected by guanacos (Lama guanicoe) and sheep (Ovis aries) grazing a perennial ryegrass-dominated sward. Grass and Forage Science 53(1): 19-30. {a} Macaulay Land Use Res. Inst., Craigiebuckler, Aberdeen AB15 8QH, UK

Balfourier, F., G. Charmet, et al. (1998). Comparison of different spatial strategies for sampling a core collection of natural populations of fodder crops. Genetics Selection Evolution Paris 30(Suppl. 1): S215-S235. {a} Inst. Natl. Recherche Agronomique, Stn. Amelioration Plantes, 234, avenue du Brezet, 63039 Clermont-Ferrand Cedex 2, France

Balfourier, F., G. Charmet, et al. (1998). Comparison of different spatial strategies for sampling a core collection of natural populations of fodder crops. Genetics Selection Evolution Paris 30(Suppl. 1): S215-S235. {a} Inst. Natl. Recherche Agronomique, Stn. Amelioration Plantes, 234, avenue du Brezet, 63039 Clermont-Ferrand Cedex 2, France

Balfourier, F., G. Charmet, et al. (1998). Genetic differentiation within and between natural populations of perennial and annual ryegrass (Lolium perenne and L. rigidum). Heredity 81(1): 100-110. {a} INRA, Station d'Ameliortain Plantes, 234 avenue Brezet, 63039 Clermont-Ferrand Cedex, France

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

Barry, T. N. (1998). The feeding value of chicory (Cichorium intybus) for ruminant livestock. Journal of Agricultural Science 131(3): 251-257. {a} Inst. Food Nutr. Human Health, Massey Univ., Palmerston North, New Zealand

Bartak, M., I. Nijs, et al. (1998). The susceptibility of PS II of Lolium perenne to a sudden fall in air temperature: Response of plants grown in elevated CO2 and/or increased air temperature. Environmental and Experimental Botany 39(1): 85-95. {a} Dep. Plant Physiol. Anat., Masaryk Univ., Kotlarska 2, 61137 Brno, Czech Republic

Bernal, M. P., A. F. Navarro, et al. (1998). Influence of sewage sludge compost stability and maturity on carbon and nitrogen mineralization in soil. Soil Biology and Biochemistry 30(3): 305-313. {a} Dep. Soil Water Conserv. Organic Waste Management, Centro Edafol. Biol. Aplicada Segura, CSIC, P.O. Box 4195, 30080 Murcia, Spain

Bernard, C. (1998). Comparative seed morphology of five Lolium L. species growing in France. Seed Science and Technology 26(3): 701-710. {a} Station Nationale d'Essais de Semences, G.E.V.E.S., rue Georges Morel, 49071, Beaucouze, France

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

Bonner, K. I., A. Rahman, et al. (1998). Relative intra-species competitive ability of nodding thistle biotypes with varying resistance to the herbicide 2,4-D. New Zealand Journal of Agricultural Research 41(2): 291-297. {a} AgResearch, Ruakura Res. Cent., Private Bag 3123, Hamilton, New Zealand

Burket, J. Z. and R. P. Dick (1998). Microbial and soil parameters in relation to N mineralization in soils of diverse genesis under differing management systems. Biology and Fertility of Soils 27(4): 430-438. {a} Dep. Crop Soil Sci., Oregon State Univ., Corvallis, OR 97331-7306, USA

Cagas, B., A. Zemanova, et al. (1998). Fusarium species, a likely cause of Lolium wilt. Plant Protection Science 34(3): 109-111. {a} Vyzkumna stanice Travinarska, 756 54 Zubri, Czech Republic

Calkins, J. B. and B. T. Swanson (1998). Comparison of conventional and alternative nursery field management systems: Soil physical properties. Journal of Environmental Horticulture 16(2): 90-97. Dep. Hortic. Sci., Univ. Minn., 1970 Folwell Ave., St. Paul, MN 55108, USA

Calkins, J. B. and B. T. Swanson (1998). Plant cold acclimation, hardiness, and winter injury in response to bare soil and groundcover-based nursery field management systems. Journal of Environmental Horticulture 16(2): 82-89. Dep. Hortic. Sci., Univ. Minn., 1970 Folwell Ave., St. Paul, MN 55108, USA

Carriere, Y., A. Bouchard, et al. (1998). Effect of endophyte incidence in perennial ryegrass on distribution, host-choice, and performance of the hairy chinch bag (Hemiptera: Lygaeidae). Journal of Economic Entomology 91(1): 324-328. Dep. Phytol., Centre Rech. Hortic., Pavillon l'Envirotron, Univ. Laval, PQ G1K 7P4, Canada

Carruthers, K., Q. Fe, et al. (1998). Intercropping corn with soybean, lupin and forages: Weed control by intercrops combined with interrow cultivation. European Journal of Agronomy 8(3-4): 225-238. {a} Dep. Plant Sci., MacDonald Campus, McGill Univ., 21,111 Lakeshore, Ste. Anne-de-Bellevue, PQ, Canada

Casler, M. D., D. J. Undersander, et al. (1998). An on-farm test of perennial forage grass varieties under management intensive grazing. Journal of Production Agriculture 11(1): 92-99. {a} Dep. Agronomy, Univ. Wis., Madison, WI 53706, USA

Cayley, J. W. D., M. C. Hannah, et al. (1998). Effects of phosphorus fertiliser and rate of stocking on the seasonal pasture production of perennial rye-grass-subterranean clover pasture. Australian Journal of Agricultural Research 49(2): 233-248. {a} Agric. Victoria Hamilton, Pastoral Vet. Inst., Private Bag 105, Hamilton, VIC 3300, Australia

Chastain, T. G. and W. C. Young, III (1998). Vegetative plant development and seed production in cool-season perennial grasses. Seed Science Research 8(2): 295-301. {a} Dep. Crop Soil Sci., Oregon State Univ., Corvallis, OR 97331-3002, USA

Cheplick, G. P. (1998). Genotypic variation in the regrowth of Lolium perenne following clipping: Effects of nutrients and endophytic fungi. Functional Ecology 12(2): 176-184. {a} Dep. Biol., College Staten Island City University New York, Staten Island, NY 10314, USA

Chiy, P. C. and C. J. C. Phillips (1998). Sodium fertilizer application to pasture. 7. Residual effects of combined applications with sulphur on herbage production and chemical composition. Grass and Forage Science 53(1): 11-18. {a} Dep. Clin. Vet. Med., Madingley Road, Univ. Cambridge, Cambridge CB3 0ES, UK

Chiy, P. C. and C. J. C. Phillips (1998). Sodium fertilizer application to pasture. 6. Effects of combined applications with sulphur on herbage production and chemical composition in the season of application. Grass and Forage Science 53(1): 1-10. {a} Dep. Clin. Vet. Med., Madingley Road, Univ. Cambridge, Cambridge CB3 0ES, UK

Cone, J. W., G. A. H. Van, et al. (1998). Prediction of nylon bag degradation characteristics of grass samples with the gas production technique. Journal of the Science of Food and Agriculture 77(3): 421-426. {a} DLO Inst. Animal Sci. Health, Dep. Ruminant Nutr., PO Box 65, NL-8200 AB Lelystad, Netherlands

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

Dalton, S. J., A. J. E. Bettany, et al. (1998). Transgenic plants of Lolium multiflorum, Lolium perenne, Festuca arundinacea and Agrostis stolonifera by silicon carbide fibre-mediated transformation of cell suspension cultures. Plant Science Shannon 132(1): 31-43. {a} Inst. Grassland Environ. Res., Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK

Damgaard, P. H., H. A. Abdel, et al. (1998). Natural occurrence of Bacillus thuringiensis on grass foliage. World Journal of Microbiology and Biotechnology 14(2): 239-242. {a} Dep. Ecol. Mol. Biol., Royal Vet. Agric. Univ., Thorvalsensvej 40, DK-1871 Frederiksberg C, Denmark

Daschner, A., J. C. Crespo, et al. (1998). Specific IgE to recombinant vegetal panallergen (rBet v 2) and fruit allergy in pollinic patients. Allergy Copenhagen 53(6): 614-618. {a} Lab. Inmunoalergia, Servicio Alergia Pediatrica, Hospital "La Paz", Castellana 261, Madrid 28046, Spain

Davies, D. M. and J. D. Graves (1998). Interactions between arbuscular mycorrhizal fungi and the hemiparasitic angiosperm Rhinanthus minor during co-infection of a host. New Phytologist 139(3): 555-563. {a} Dep. Environ. Sci., UCRYSJ, York YO3 7SX, UK

de, J. H., O. H. Jacobsen, et al. (1998). Particle-facilitated transport of prochloraz in undisturbed sandy loam soil columns. Journal of Environmental Quality 27(6): 1495-1503. {a} Danish Inst. Agric. Sci., Dep. Crop Physiol. Soil Sci., Res. Centre Foulum, P.O. Box 50, DK-8830 Tjele, Denmark

Deckmyn, G. and I. Impens (1998). UV-B and PAR in a grass (Lolium perenne L.) canopy. Plant Ecology 137(1): 13-19. Lab. Plant Ecol., Univ. Antwerpen UIA, Universiteitsplein 1, 2610 Wilrijk, Belgium

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

Dewhurst, R. J. and P. J. King (1998). Effects of extended wilting, shading and chemical additives on the fatty acids in laboratory grass silages. Grass and Forage Science 53(3): 219-224. {a} Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EB, UK

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

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

Donaghy, D. J. and W. J. Fulkerson (1998). Priority for allocation of water-soluble carbohydrate reserves during regrowth of Lolium perenne. Grass and Forage Science 53(3): 211-218. {a} Tasmanian Institute of Agricultural Research, Burnie, Tasmania, 7320, Australia

Douglas, J. T. and C. E. Crawford (1998). Soil compaction effects on utilization of nitrogen from livestock slurry applied to grassland. Grass and Forage Science 53(1): 31-40. {a} Soils Dep., SAC, Bush Estate, Penicuik EH26 0PH, UK

Echevarria, G., P. C. Vong, et al. (1998). Effect of NO3- on the fate of 99TcO4- in the soil-plant system. Journal of Environmental Radioactivity 38(2): 163-171. {a} Lab. Soil, Environmental Sci., ENSAIA-INRA/INPL, BP 172, 2, Ave. de la Foret de Haye, 54505 Vandoeuvre-les-Nancy Cedex, France

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

Eerens, J. P. J., R. J. Lucas, et al. (1998). Influence of the endophyte (Neotyphodium lolii) on morphology, physiology and alkaloid synthesis of perennial ryegrass during high temperature and water stress. New Zealand Journal of Agricultural Research 41(2): 219-226. {a} AgResearch, Ruakura Agric. Res. Cent., Private Bag 3123, Hamilton, New Zealand

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

Ervin, E. H. and A. J. Koski (1998). Growth responses of Lolium perenne L. to trinexapac-ethyl. Hortscience 33(7): 1200-1202. {a} Dep. Hortic., Univ. Mo., Columbia, MO 65211, USA

Fagerness, M. J. and D. Penner (1998). Evaluation of V-10029 and trinexapac-ethyl for annual bluegrass seedhead suppression and growth regulation of five cool-season turfgrass species. Weed Technology 12(3): 436-440. {a} Dep. Crop Soil Sci., Mich. State Univ., East Lansing, MI 48824-1325, USA

Fagerness, M. J. and D. Penner (1998). Spray application parameters that influence the growth inhibiting effects of trinexapac-ethyl. Crop Science 38(4): 1028-1035. {a} Mich. State Univ., Dep. Crop Soil Sci., East Lansing, MI 48824-1325, USA

Fahlbusch, B., W. D. Mueller, et al. (1998). Detection and quantification of group 4 allergens in grass pollen extracts using monoclonal antibodies. Clinical and Experimental Allergy 28(7): 799-807. {a} Inst. Clin. Immunol., Friedrich-Schiller-University, Am Johannisfriedhof 3, 07743 Jena, Germany

Faure, S., J. B. Cliquet, et al. (1998). Nitrogen assimilation in Lolium perenne colonized by the arbuscular mycorrhizal fungus Glomus fasciculatum. New Phytologist 138(3): 411-417. {a} UA INRA 950 Physiol. Biochim. Veg., IRBA, Univ. Caen, 14032 Caen Cedex, France

Ferrer, M., M. L. Sanz, et al. (1998). Effect of immunotherapy on allergen-specific production of sulphidoleukotriene and histamine. Journal of Investigational Allergology and Clinical Immunology 8(5): 277-280. {a} Dep. Allergy Clin. Immunol., Univ. Clin. of Navarra, P.O. Box 4209, 31080 Pamplona, Spain

Ferrer, M., M. L. Sanz, et al. (1998). Study of IgE-dependent sulphidoleukotriene cellular releasability. Journal of Investigational Allergology and Clinical Immunology 8(1): 17-22. {a} Dep. Allergology Clinical Immunol., Univ. Clinic, Fac. Med., Univ. Navara, PO Box 4092, 31080 Pamplona, Spain

Folling, M., C. Pedersen, et al. (1998). Reduction of nuclease activity from Lolium protoplasts: Effect on transformation frequency. Plant Science Shannon 139(1): 29-40. {a} Dep. Agric. Sci., Plant Breeding Crop Sci., Royal Vet. Agric. Univ., 40 Thorvaldsensvej, DK-1871 Frederiksberg C, Copenhagen, Denmark

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

Gerzabek, M. H., F. Strebl, et al. (1998). Plant uptake radionuclides in lysimeter experiments. Environmental Pollution 99(1): 93-103. {a} Austrian Res. Cent. Seibersdorf, Div. Life Sci., A-2444 Seibersdorf, Austria

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

Gross, M. K., J. B. Santini, et al. (1998). The influence of temperature and leaf wetness duration on infection of perennial ryegrass by Rhizoctonia solani. Plant Disease 82(9): 1012-1016. {a} Dep. Botany Plant Pathol., Purdue Univ., West Lafayette, IN 47907, USA

Hall, M. H., P. J. Levan, et al. (1998). Fall-grazing management effects on production and persistence of tall fescue, perennial ryegrass, and prairie grass. Journal of Production Agriculture 11(4): 487-491. {a} Dep. Agronomy, Pennsylvania State Univ., University Park, PA 16802, USA

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

Hansen, Q. J. A., K. Nyamapfene, et al. (1998). Effects of aqueous extracts from Artemisia afra parts and soil on seed germination and early seedling development in selected plant species. South African Journal of Plant and Soil 15(1): 1-5. {a} Sch. Agric., Univ. North West, Private Bag X2046, Mmabatho 2735, South Africa

Hassim, Z., S. E. Maronese, et al. (1998). Injury to murine airway epithelial cells by pollen enzymes. Thorax 53(5): 368-371. {a} Inflammation Res. Unit, Sch. Pathology, Univ. New South Wales, Sydney, NSW 2052, Australia

Hayward, M. D., J. W. Forster, et al. (1998). Genetic analysis of Lolium: I. Identification of linkage groups and the establishment of a genetic map. Plant Breeding 117(5): 451-455. {a} Inst. Grassland Environ. Res., Aberystwyth, Wales SY23 3EB, UK

Hazard, L., M. A. De, et al. (1998). Perennial ryegrass cultivar effects on intake of grazing sheep and feeding value. Annales de Zootechnie Paris 47(2): 117-125. {a} INRA, Amelioration Plantes Fourrageres, 86600 Lusignan, France

Heath, R., H. Huxley, et al. (1998). cDNA cloning and differential expression of three caffeic acid O-methyltransferase homologues from perennial ryegrass (Lolium perenne). Journal of Plant Physiology 153(5-6): 649-657. {a} Plant Biotechnol. Centre, Agric. Victoria, Dep. Natl. Resour. Environ., La Trobe Univ., Bundoora, VIC 3083, Australia

Hirth, J. R., B. M. McKenzie, et al. (1998). Roots of perennial ryegrass (Lolium perenne) influence the burrowing of the endogeic earthworm, Aporrectodea rosea. Soil Biology and Biochemistry 30(14): 2181-2183. {a} Sch. Agriculture, La Trobe Univ., Bundoora, VIC 3083, Australia

Hodge, A., E. Paterson, et al. (1998). Characterisation and microbial utilisation of exudate material from the rhizosphere of Lolium perenne grown under CO2 enrichment. Soil Biology and Biochemistry 30(8-9): 1033-1043. {a} Dep. Biol., PO Box 373, Univ. York, York, YO10 5YW, UK

Hodge, A., J. Stewart, et al. (1998). Root proliferation, soil fauna and plant nitrogen capture from nutrient-rich patches in soil. New Phytologist 139(3): 479-494. {a} Dep. Biol., Univ. York, PO Box 373, York YO10 5YW, UK

Hoffman, P. C., D. K. Combs, et al. (1998). Performance of lactating dairy cows fed alfalfa silage or perennial ryegrass silage. Journal of Dairy Science 81(1): 162-168. {a} Marshfield Agric. Research Station, Marshfield, WI 54449, USA

Hongo, A. and H. Oinuma (1998). Effect of artificial treading on morphology and ethylene production in four herbage grasses. Research Bulletin of Obihiro University Natural Science. Oct. 21(1): 1-8. {a} Department of Agro-environmental Science, Obihiro University of Agriculture and Veterinary Medicine, Inada, Obihiro, Hokkaido, 080-8555, Japan

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

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

Horwath, W. R., L. F. Elliott, et al. (1998). Influence of soil quality on the function of inhibitory rhizobacteria. Letters in Applied Microbiology 26(2): 87-92. {a} Dep. Land Air Water Resources, Hoagland Hall, Univ. Calif. Davis, Davis, CA 95616, USA

Horwath, W. R., L. F. Elliott, et al. (1998). Denitrification in cultivated and noncultivated riparian areas of grass cropping systems. Journal of Environmental Quality 27(1): 225-231. {a} One Shields Ave., Dep. Land Air and Water Resour., Univ. Calif., Davis, CA 95616-8627, USA

Ineson, P., P. A. Coward, et al. (1998). Soil gas fluxes of N2O, CH4 and CO2 beneath Lolium perenne under elevated CO2: The Swiss free air carbon dioxide enrichment experiment. Plant and Soil 198(1): 89-95. {a} Inst. Terrestrial Ecol., Merlewood Res. Station, Grange-over-Sands, Cumbria LA11 6JU, UK

Isensee, A. R., A. M. Sadeghi, et al. (1998). Impact of burn-down herbicides on atrazine washoff from vegetation. Chemosphere 36(1): 13-19. {a} USDA, Agric. Res. Serv., Environ. Chemistry Lab., Build. 001, Beltsville, MD 20705, USA

Jacobs, J. L. (1998). A survey on the effect of management techniques and pasture composition and quality at harvesting on silage quality on dairy farms in western Victoria. Australian Journal of Experimental Agriculture 38(2): 139-143. {a} Dep. Nat. Resour. Environ., 78 Henna Street, Warrnambool, VIC 3280, Australia

Jacobs, J. L., S. E. Rigby, et al. (1998). Effect of lock up and harvest dates on dairy pasture dry matter yield and quality for silage in southern-western Victoria. Australian Journal of Experimental Agriculture 38(2): 131-138. {a} Dep. Nat. Resour. Environ., 78 Henna Street, Warrnambool, VIC 3280, Australia

Jenkyn, J. F., R. J. Gutteridge, et al. (1998). A comparison of management regimes for one-year rotational set-aside within a sequence of winter wheat crops, and of growing wheat without interruption. 3. Effects of diseases. Journal of Agricultural Science 130(4): 399-410. IACR-Rothamsted, Harpenden, Herts. AL5 2JQ, UK

Jiang, H. and J. Fry (1998). Drougt responses of perennial ryegrass treated with plant growth regulators. Hortscience 33(2): 270-273. {a} Dep. Nat. Resour. Environ. Sci., Univ. Ill., Urbana, IL 61801, USA

Jiang, H., J. Fry, et al. (1998). Assessing irrigation management for its effect on disease and weed levels in perennial ryegrass. Crop Science 38(2): 440-445. {a} Dep. Hortic. Forest. Resour., Kans. State Univ., Manhattan, KS 66506, USA

Jongen, M. and M. B. Jones (1998). Effects of elevated carbon dioxide on plant biomass production and competition in a simulated neutral grassland community. Annals of Botany London 82(1): 111-123. {a} Bot. Dep., Trinity Coll., Univ. Dublin, Dublin 2, Ireland

Keady, T. W. J. and K. P. O (1998). An evaluation of potassium and nitrogen ferti