Source: AGRICOLA database (1970-1996)

Abdallahi, M. M. and D. A. N (2000). Effects of green manures on soil physical and biological properties and on wheat yields and N uptake. Canadian Journal of Soil Science. Feb. 80(1): 81-89. {a} Institut de recherche et developpement en agroenvironnement, 2700 Einstein, Sainte-Foy, Quebec, G1P 3W8, Canada

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

Algan, G. and H. N. B. Buyukkartal (2000). Ultrastructure of seed coat development in the natural tetraploid Trifolium pratense L. Journal of Agronomy and Crop Science. [print] May 184(3): 205-213. {a} Department of Biology, Faculty of Science, University of Ankara, Ankara, 06100, Turkey

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

Barni, E. and C. Siniscalco (2000). Vegetation dynamics and arbuscular mycorrhiza in old-field successions of the western Italian Alps. Mycorrhiza . [print] August 10(2): 63-72. {a} Dipartimento di Biologia Vegetale, Universita di Torino, Viale Mattioli 25, I-10125, Turin, Italy

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

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

Budzinski, J. W., B. C. Foster, et al. (2000). An in vitro evaluation of human cytochrome P450 3A4 inhibition by selected commercial herbal extracts and tinctures. Phytomedicine Jena. [print] July 7(4): 273-282. {a} Ottawa-Carleton Institute of Biology, Department of Biology, University of Ottawa, 30 Marie Curie St., Stn. A, Ottawa, ON, PO Box 450, K1N 6N5, Canada

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

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

Cassida, K. A., T. S. Griffin, et al. (2000). Protein degradability and forage quality in maturing alfalfa, red clover, and birdsfoot trefoil. Crop Science. Jan. Feb. 40(1): 209-215. {a} Southwest Res. and Extension Center, University of Arkansas, 362 Hwy 174N, Hope, AR, 71801, USA

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

Fuxa, J. E., J. R. Fuxa, et al. (2000). Prevalence of a trypanosomatid in the southern green stink bug, Nezara viridula. Journal of Eukaryotic Microbiology. [print] July August 47(4): 388-394. {a} Department of Entomology, Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, Baton Rouge, LA, 70803, USA

Gerke, J., L. Beissner, et al. (2000). The quantitative effect of chemical phosphate mobilization by carboxylate anions on P uptake by a single root. I. The basic concept and determination of soil parameters. Journal of Plant Nutrition and Soil Science. April 163(2): 207-212. {a} Ausbau 5, D-18258, Rukieten, Germany

Holbeck, H. B., H. D. Clausen, et al. (2000). Selection of nectar sources by butterflies and burnets in organic field boundary habitats (Papilionoidea, Hesperioidea and Zygaenidae). Entomologiske Meddelelser. [print] Maj 68(2): 47-59. {a} Arhusvej 59, DK-8382, Hinnerup, Denmark

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

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

Isse, A. A., A. F. MacKenzie, et al. (2000). Cover crops and nutrient retention for subsequent sweet corn production. Agronomy Journal. Nov. Dec. 91(6): 934-939. {a} Dep. of Natural Resource Sciences, McGill Univ., 21,111 Lakeshore Rd., Macdonald Campus, Ste. Anne de Bellevue, QC, H9X 3V9, Canada

Jacot, K. A., A. Luscher, et al. (2000). Symbiotic N2 fixation of various legume species along an altitudinal gradient in the Swiss Alps. Soil Biology and Biochemistry. [print] August 32(8-9): 1043-1052. {a} Institute of Plant Sciences, ETH-Zurich, 8092, Zurich, Switzerland

Kahiluoto, H. and M. Vestberg (2000). Creation of a non-mycorrhizal control for a bioassay of AM effectiveness: 2. Benomyl application and soil sampling time. Mycorrhiza . Feb. 9(5): 259-270. {a} Ecological Production, Agricultural Research Centre of Finland, Partala, FIN-51900, Juva, Finland

Katsvairo, T. W. and W. J. Cox (2000). Tillage X rotation X management interactions in corn. Agronomy Journal. [print] May June 92(3): 493-500. {a} Dep. of Soil, Crop, and Atmospheric Sci., Cornell University, Ithaca, NY, 14853, USA

Katsvairo, T. W. and W. J. Cox (2000). Economics of cropping systems featuring different rotations, tillage, and management. Agronomy Journal. [print] May June 92(3): 485-493. {a} Dep. of Soil, Crop, and Atmospheric Sci., Cornell University, Ithaca, NY, 14853, USA

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

Kunelius, H. T., K. B. McRae, et al. (2000). Single-cut red clover combined with late timothy may be valuable in short-term rotations. Canadian Journal of Plant Science. [print] April 80(2): 309-313. {a} Crops and Livestock Research Centre, Agriculture and Agri-Food Canada, Charlottetown, PE, C1A 7M8, Canada

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

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

Lin, L. Z., X. G. He, et al. (2000). LC-ESI-MS study of the flavonoid glycoside malonates of red clover (Trifolium pratense). Journal of Agricultural and Food Chemistry. Feb. 48(2): 354-365. {a} Research Laboratory of Natural Products Chemistry, A. M. Todd Botanicals, 4091 West 11th Avenue, Eugene, OR, 97402, USA

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

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

Nasholm, T., D. K. Huss, et al. (2000). Uptake of organic nitrogen in the field by four agriculturally important plant species. Ecology Washington D C. [print] April 81(4): 1155-1161. {a} Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, S-901 83, Umea, Sweden

Neilsen, G. H. and E. J. Hogue (2000). Comparison of white clover and mixed sodgrass as orchard floor vegetation. Canadian Journal of Plant Science. [print] July 80(3): 617-622. {a} Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, Summerland, BC, V0H 1Z0, Canada

Nussbaum, S., P. Bungener, et al. (2000). Plant-plant interactions and soil moisture might be important in determining ozone impacts on grasslands. New Phytologist. [print] August 147(2): 327-335. {a} Swiss Federal Research Station for Agroecology and Agriculture (FAL), Liebefeld, CH-3003, Bern, Switzerland

Ohno, T., K. Doolan, et al. (2000). Phytotoxic effects of red clover amended soils on wild mustard seedling growth. Agriculture Ecosystems and Environment. April 78(2): 187-192. {a} Department of Plant, Soil and Environmental Sciences, University of Maine, 5722 Deering Hall, Orono, ME, 04469-5722, USA

Richards, B. K., T. S. Steenhuis, et al. (2000). Effect of sludge-processing mode, soil texture and soil pH on metal mobility in undisturbed soil columns under accelerated loading. Environmental Pollution. [print] 109(2): 327-346. {a} Department of Agricultural and Biological Engineering, Cornell University, Riley-Robb Hall, Ithaca, NY, 14853, USA

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

Rinne, M. and A. Nykanen (2000). Timing of primary growth harvest affects the yield and nutritive value of timothy-red clover mixtures. Agricultural and Food Science in Finland. [print] 9(2): 121-134. {a} Animal Production Research, Agricultural Research Centre of Finland, FIN-31600, Jokioinen, Finland

Singer, J. W., W. J. Cox, et al. (2000). Cropping system effects on weed emergence and densities in corn. Agronomy Journal. [print] July August 92(4): 754-760. {a} Dep. of Soil, Crop, and Atmospheric Sciences, Cornell University, Ithaca, NY, 14853, USA

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

Stencl, J. and P. Homola (2000). Water sorption isotherms of leaves and stems of Trifolium pratense L. Grass and Forage Science. [print] June 55(2): 159-165. {a} Mendel University of Agriculture and Forestry, Zemedelska 1, 613 00, Brno, Czech Republic

Tebayashi, S. i., A. Ishihara, et al. (2000). Induction of clovamide by jasmonic acid in red clover. Phytochemistry Oxford. [print] June 54(4): 387-392. {a} CREST, Japan Science and Technology Corporation, Osaka, Japan

Topp, E., H. Zhu, et al. (2000). Characterization of an atrazine-degrading Pseudaminobacter sp. isolated from Canadian and French agricultural soils. Applied and Environmental Microbiology. [print] July 66(7): 2773-2782. {a} Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON, N5V 4T3, Canada

von, G. V. E. and M. P. Hopkins (2000). Alternative medicine in gynecologic oncology: A case report. Gynecologic Oncology. April 77(1): 190-192. {a} N.E.O.U.C.O.M., 224 W. Exchange Street, Suite 140, Akron, OH, 44302, USA

Adam, G. and H. J. Duncan (1999). Effect of diesel fuel on growth of selected plant species. Environmental Geochemistry and Health. [print] December 21(4): 353-357. {a} Department of Agricultural, Food and Environmental Chemistry, University of Glasgow, Joseph Black Building, Glasgow, G12 8QQ, 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

Alzugaray, R., M. S. Zerbino, et al. (1999). Epizootiology of Entomophthoralean fungi. Use of Zoophthora radicans (Brefeld) Batko (Zygomicotina: Entomophthorales) for the biocontrol of Epinotia aporema (Wals.) (Lepidoptera: Tortricidae) in Uruguay. Revista de la Sociedad Entomologica Argentina 58(1-2): 307-311. {a} INIA La Estanzuela, Ruta 50 km 12, Colonia, Uruguay

Angers, D. A., L. M. Edwards, et al. (1999). Soil organic matter quality and aggregate stability under eight potato cropping sequences in a fine sandy loam of Prince Edward Island. Canadian Journal of Soil Science. Aug. 79(3): 411-417. {a} Soil and Crops Research Centre, Agriculture and Agri-Food Canada, 2560 Hochelaga Blvd., Sainte-Foy, PQ, G1V 2J3, Canada

Balmelli, L., W. Nentwig, et al. (1999). Food preferences of the common vole Microtus arvalis in the agricultural landscape with regard to nutritional components of plants. Zeitschrift fuer Saeugetierkunde. June 64(3): 154-168. {a} Zoologisches Institut, Universitaet Bern, Baltzerstr. 3, CH-3012, Bern, Germany

Beekman, M. C., H. Lingeman, et al. (1999). Determination of the isoflavone formononetin in red clover (Trifolium pratense L.) by micellar electrokinetic chromatography combined with deep-UV laser-induced wavelength-resolved fluorescence detection. Journal of Microcolumn Separations 11(5): 347-352. {a} Department of Analytical Chemistry and Applied Spectroscopy, Free University, De Boelelaan 1083, 1081 HV, Amsterdam, Netherlands

Blake, L., S. Mercik, et al. (1999). Potassium content in soil, uptake in plants and the potassium balance in three European long-term field experiments. Plant and Soil 216(1-2): 1-14. {a} Soil Science Department, IACR-Rothamsted, Harpenden, Herts, AL5 2JQ, UK

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

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

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

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

Christie, B. R. and R. A. Martin (1999). Selection for persistence in red clover. Canadian Journal of Plant Science. July 79(3): 357-359. {a} Crops and Livestock Research Centre, Agriculture and Agri-Food Canada, Charlottetown, PE, C1A 7M8, Canada

Cuomo, G. J., D. G. Johnson, et al. (1999). Pasture renovation and grazing management impacts on cool-season grass pastures. Journal of Production Agriculture. Oct. Dec. 12(4): 564-569. {a} West Central Exp. Stn., Univ. of Minnesota, Morris, MN, 56267, USA

Drury, C. F., C. S. Tan, et al. (1999). Red clover and tillage influence on soil temperature, water content, and corn emergence. Agronomy Journal. Jan. Feb. 91(1): 101-108. {a} Agric. and Agri-Food Canada, Greenhouse and Processing Crops Res. Ctr., Harrow, ON, N0R 1G0, Canada

Egorov, V. I. (1999). Nitrogen-fixing activity of the herbaceous Fabaceae in the Kola Peninsula. Botanicheskii Zhurnal St Petersburg. Aug. 84(8): 98-104.

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

Gokkus, A., A. Koc, et al. (1999). Hay yield and nitrogen harvest in smooth bromegrass mixtures with alfalfa and red clover in relation to nitrogen application. European Journal of Agronomy 10(2): 145-151. {a} Faculty of Agriculture, Ataturk University, 25240, Erzurum, Turkey

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

Greene, S. L., T. C. Hart, et al. (1999). Using geographic information to acquire wild crop germplasm for ex situ collections: II. Post-collection analysis. Crop Science. May June 39(3): 843-849. {a} Washington State Univ.-IAREC, 24106 N. Bunn Road, Prosser, WA, 99350-9687, USA

Guntli, D., S. Burgos, et al. (1999). Biological control of hedge bindweed (Calystegia sepium) with Stagonospora convolvuli strain LA39 in combination with competition from red clover (Trifolium pratense). Biological Control. July 15(3): 252-258. {a} Phytopathology Group, Institute of Plant Sciences, Swiss Federal Institute of Technology (ETH), Universitatstrasse 2, CH-8092, Zurich, Switzerland

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

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

Huss, D. K., H. Sverrisson, et al. (1999). Occurrence of Alnus-infective Frankia and Trifolium-infective Rhizobium in circumpolar soils. Arctic Antarctic and Alpine Research. Nov. 31(4): 400-406. {a} Department of Agricultural Research for Northern Sweden, Crop Science Section, Swedish University of Agricultural Sciences, S-904 03, Umea, Sweden

Kankanen, H., A. Kangas, et al. (1999). The effect of incorporation time of different crops on the residual effect on spring cereals. Agricultural and Food Science in Finland 8(3): 285-298. {a} Plant Production Research, Agricultural Research Centre of Finland, FIN-31600, Jokioinen, Finland

Krueger, C. G., K. A. Albrecht, et al. (1999). Sodium sulphite effects on recovery and composition of detergent fibre and lignin from forage legumes varying in levels of proanthocyanidins. Journal of the Science of Food and Agriculture. Aug. 79(11): 1351-1356. {a} Department of Agronomy, University of Wisconsin-Madison, Madison, WI, 53706, USA

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

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

Leishman, M. R. (1999). How well do plant traits correlate with establishment ability? Evidence from a study of 16 calcareous grassland species. New Phytologist. March 141(3): 487-496. {a} Department of Biological Sciences, Macquarie University, Sydney, NSW, 2109, Australia

Liu, W., E. A. Guertal, et al. (1999). Population differentiation, spatial variation, and sampling of tall fescue under grazing. Agronomy Journal. Sept. Oct. 91(5): 801-806. {a} Dep. of Agronomy and Soils, Auburn University, 202 Funchess Hall, Auburn, AL, USA

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

Malinowski, D. P., D. P. Belesky, et al. (1999). Endophyte infection may affect the competitive ability of tall fescue grown with red clover. Journal of Agronomy and Crop Science. Sept. 183(2): 91-101. {a} Appalachian Soil and Water Conservation Research Laboratory, USDA-ARS, 1224 Airport Road, Beaver, WV, 25813-0400, USA

Marchiol, L., C. Mondini, et al. (1999). Effects of municipal waste leachate on seed germination in soil-compost mixtures. Restoration Ecology. June 7(2): 155-161. {a} Dipartimento di Produzione Vegetale e Tecnologie Agrarie, Universita di Udine, Via delle Scienze 208, 33100, Udine, Italy

Martin, R. A., B. R. Christie, et al. (1999). AC Christie red clover. Canadian Journal of Plant Science. April 79(2): 257-258. {a} Crops and Livestock Research Centre, Agriculture and Agri-Food Canada, Charlottetown, PE, C1A 7M8, Canada

McLean, N. L., M. Nelke, et al. (1999). Meiotic chromosome pairing, isozyme analyses and ferritin expression in a red clover mutant capable of somatic embryogenesis. Annals of Botany London 83(3): 315-323. {a} Department of Plant Science, Nova Scotia Agricultural College, Truro, NS, B2N 5E3, Canada

Mirzaie, N. H., I. L. Gordon, et al. (1999). Inheritance of growth habit-related attributes in red clover (Trifolium pratense L.). Journal of Heredity. Sept. Oct. 90(5): 550-553. {a} Research Institute of Forests and Rangelands, Ministry of Jahade Sazandegi, Tehran, Iran

Nelke, M., J. Nowak, et al. (1999). Enhanced expression of a cold-induced gene coding for a glycine-rich protein in regenerative somaclonal variants of red clover (Trifolium pratense L.). Euphytica 105(3): 211-217. {a} Department of Plant Science, Nova Scotia Agricultural College, Truro, NS, B2N 5E3, Canada

Owens, V. N., K. A. Albrecht, et al. (1999). Protein degradation and ensiling characteristics of red clover and alfalfa wilted under varying levels of shade. Canadian Journal of Plant Science. April 79(2): 209-222. {a} Plant Science Department, South Dakota State University, Brookings, SD, 57007, USA

Owens, V. N., K. A. Albrecht, et al. (1999). Protein degradation and fermentation characteristics of red clover and alfalfa silage harvested with varying levels of total nonstructural carbohydrates. Crop Science. Nov. Dec. 39(6): 1873-1880. {a} Plant Science Dep., South Dakota State Univ., Brookings, SD, 57007, USA

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

Prigge, E. C., W. B. Bryan, et al. (1999). Early- and late-season grazing of orchardgrass and fescue hayfields overseeded with red clover. Agronomy Journal. July Aug 91(4): 690-696. {a} Div. of Plant and Soil Sci., West Virginia Univ., Morgantown, WV, 26506-6108, USA

Rajalahti, R. M., R. R. Bellinder, et al. (1999). Time of hilling and interseeding affects weed control and potato yield. Weed Science. March April 47(2): 215-225. {a} Department of Plant Production, University of Helsinki, Viikki, 00014, Helsinki, Finland

Rasiah, V. (1999). Temporal dynamics of soil nitrate-N after termination of forage phases in corn-forage rotation. Biology and Fertility of Soils. May 29(2): 201-206. {a} Soil Science and Plant Nutrition, University of Western Australia, Nedlands, WA, 6009, Australia

Rasiah, V. (1999). Nitrogen immobilization/remineralization in legume-amended soils as influenced by texture and compaction. Communications in Soil Science and Plant Analysis 30(5-6): 829-841. {a} Soil Science and Plant Nutrition, University of Western Australia, Nedlands, WA, 6009, Australia

Rasiah, V. and B. D. Kay (1999). Temporal dynamics of microbial biomass- and mineral-N in legume amended soils from a spatially variable landscape. Geoderma . Oct. 92(3-4): 239-256. {a} Soil Science and Plant Nutrition, University of Western Australia, Nedlands, WA, Australia

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

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

Scheneiter, J. O., C. J. Escuder, et al. (1999). Herbage production of red clover cultivars in mixtures with perennial ryegrass and prairie grass under grazing. Journal of Production Agriculture. April June 12(2): 231-234. {a} E.E.A. Pergamino, INTA CC 31, 2700, Pergamino, Argentina

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

Soon, Y. K. (1999). Crop residue and fertilizer management effects on nutrient use and barley production. Canadian Journal of Soil Science. May 79(2): 389-394. {a} Research Branch, Agriculture and Agri-Food Canada, Beaverlodge, Alberta, T0H 0C0, Canada

Steiner, J. J. and S. C. Alderman (1999). Red clover seed production: V. Root health and crop productivity. Crop Science. Sept. Oct. 39(5): 1407-1415. {a} USDA-ARS, National Forage Seed Production Research Center, 3450 SW Campus Way, Corvallis, OR, 97331, USA

Taylor, N. L. and R. E. Mundell (1999). Registration of multiple-cotyledon red clover genetic marker stock: L38-1485. Crop Science. July Aug 39(4). {a} Dep. of Agronomy, Univ. of Kentucky, Lexington, KY, 40546-0091, USA

Tedford, E. C. and D. A. Inglis (1999). Evaluation of legumes common to the Pacific Northwest as hosts for the pea cyst nematode, Heterodera goettingiana. Journal of Nematology. June 31(2): 155-163. {a} Zeneca Ag Products, Richmond, CA, 94804-0023, USA

Venuto, B. C., R. R. Smith, et al. (1999). Selection for resistance to Fusarium wilt in red clover. Canadian Journal of Plant Science. July 79(3): 351-356. {a} Department of Agronomy, Louisiana State University Agriculture Center, Baton Rouge, LA, 70803-2110, USA

Via, S. (1999). Reproductive isolation between sympatric races of pea aphids. I. Gene flow restriction and habitat choice. Evolution . Oct. 53(5): 1446-1457. {a} Department of Biology and Department of Entomology, University of Maryland, College Park, MD, 20742, USA

Vyn, T. J., K. J. Janovicek, et al. (1999). Soil nitrate accumulation and corn response to preceding small-grain fertilization and cover crops. Agronomy Journal. Jan. Feb. 91(1): 17-24. {a} Plant Agriculture Dep., Univ. of Guelph, Guelph, ON, N1G 2W1, Canada

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

Wiersma, D. W., P. C. Hoffman, et al. (1999). Companion crops for legume establishment: Forage yield, quality, and establishment success. Journal of Production Agriculture. Jan. March 12(1): 116-122. {a} Marshfield Agric. Res. Stn., Univ. of Wisconsin, 8396 Yellowstone Dr., Marshfield, WI, 54449, USA

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

Woodbury, P. B., G. Rubin, et al. (1999). Assessing trace element uptake by vegetation on a coal fly ash landfill. Water Air and Soil Pollution. April 111(1-4): 271-286. {a} Boyce Thompson Institute for Plant Research, Tower Road, Ithaca, NY, 14853-1801, USA

Xie, C. and J. A. Mosjidis (1999). Influence of sample size on precision of genetic correlations in red clover. Crop Science. May June 39(3): 863-867. {a} Dep. of Agronomy and Soils and Alabama Agricultural Experiment Station, Auburn University, Auburn, AL, 36849-5412, USA

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

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

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

Bakar, H. N. and G. Algan (1998). Ultrastructure of the endosperm haustorium in Trifolium pratense L. Acta Biologica Cracoviensia Series Botanica 40: 15-19. {a} Department of Biology, Faculty of Science, University of Ankara, Tandogan, Ankara, 06100, Turkey

Bakar, H. N. and G. Algan (1998). Ultrastructure of the endosperm haustorium in Trifolium pratense L. Acta Biologica Cracoviensia Series Botanica 40: 15-19. {a} Department of Biology, Faculty of Science, University of Ankara, Tandogan, Ankara, 06100, Turkey

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

Boyle, J. J. and J. R. Shann (1998). The influence of planting and soil characteristics on mineralization of 2,4,5-T in rhizosphere soil. Journal of Environmental Quality 27(3): 704-709. {a} Dep. Biol. Sci., 821A Rieveschl Hall, Univ. Cincinnati, Cincinnati, OH 45221-0006, USA

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

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

Carter, M. R., J. B. Sanderson, et al. (1998). Influence of time of tillage on soil physical attributes in potato rotations in Prince Edward Island. Soil and Tillage Research 49(1-2): 127-137. {a} Agric. Agri-Food Canada, Crops Livestock Res. Cent., PO Box 1210, Charlottetown, PEI C1A 7M8, Canada

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

Chien, S. A. and D. H. Morse (1998). The roles of prey and flower quality in the choice of hunting sites by adult male crab spiders Musumenta vatia (Araneae, Thomisidae). Journal of Arachnology 26(2): 238-241. {a} Dep. Ecol. Evolutionary Biol., Box G-W, Brown Univ., Providence, RI 02912, USA

Christie, B. R., T. M. Choo, et al. (1998). AC endure red clover. Canadian Journal of Plant Science 78(1): 113-114. {a} Agriculture Agri-Food Canada, Crop Livestock Res. Centre, P.O. Box 1210, Charlottetown, Prince Edward Island C1A 7M8, Canada

Coblentz, W. K., J. O. Fritz, et al. (1998). In situ dry matter, nitrogen, and fiber degradation of alfalfa, red clover, and eastern gamagrass at four maturities. Journal of Dairy Science 81(1): 150-161. {a} Dep. Amin. Sci., Univ. Arkansas, Fayetteville, AR, USA

Dalton, D. A., S. L. Joyner, et al. (1998). Antioxidant defenses in the peripheral cell layers of legume root nodules. Plant Physiology Rockville 116(1): 37-43. {a} Biol. Dep., Reed Coll., Portland, OR 97202, USA

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

Dapaah, H. K. and T. J. Vyn (1998). Nitrogen fertilization and cover crop effects on soil structural stability and corn performance. Communications in Soil Science and Plant Analysis 29(17-18): 2557-2569. {a} Crops Res. Inst., P.O. Box 3785, Kumasi, Ghana

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

Diaz, L. E., D. A. G. Ricciardelli, et al. (1998). The possible use of honeybee pollen loads in characterising vegetation. Grana 37(3): 155-163. {a} Departamento de Bioloxia Vexetal e Ciencias do Solo, Facultad de Ciencias de Orense, Universidad de Vigo, 32002, Orense, Spain

Edmunds, J. I., D. J. Miller, et al. (1998). Powdery mildew caused by an Oidium sp. in alfalfa in Wisconsin. Plant Disease 82(7): 832. {a} Pioneer Hi-Bred. Int. Inc., W8131 State Hwy. 60, Arlington, WI 53911, USA

Edwards, L. (1998). Comparison of two spring seeding methods to establish forage cover crops in relay with winter cereals. Soil and Tillage Research 45(3-4): 227-235. {a} Res. Centre, Agric. and Agri-Food Canada, P.O. Box 1210, Charlottetown, Prince Edward Island, C1A 7M8, Canada

Gana, J. A., N. E. Kalengamaliro, et al. (1998). Expression of beta-amylase from alfalfa taproots. Plant Physiology Rockville 118(4): 1495-1505. {a} Dep. Agron., Purdue Univ., West Lafayette, IN 47907-1150, USA

Hagen, M. J. and J. L. Hamrick (1998). Genetic variation and population genetic structure in Trifolium pratense. Journal of Heredity 89(2): 178-181. {a} USDA/ARS/HCRU, 3420 Orchard Ave., Corvallis, OR 97330, USA

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

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

Horikawa, Y., K. Nishimura, et al. (1998). Nodule occupancies by inoculum strains used for lime-coating and vacuum processing inoculations of red clover (Trifolium pratense L.) seeds. Grassland Science 44(1): 1-6. Laboratory of Crop Sci., Obihiro Univ. Agric. and Vet. Med., Obihiro, Hokkaido 080-8555, Japan

Kankanen, H., A. Kangas, et al. (1998). Timing incorporation of different green manure crops to minimize the risk of nitrogen leaching. Agricultural and Food Science in Finland 7(5-6): 553-567. {a} Plant Production Research, Agricultural Research Centre of Finland, FIN-31600, Jokioinen, Finland

Krol, J., J. Wielbo, et al. (1998). Molecular characterization of pssCDE genes of Rhizobium leguminosarum bv. trifolii strain TA1: pssD mutant is affected in exopolysaccharide synthesis and endocytosis of bacteria. Molecular Plant Microbe Interactions 11(11): 1142-1148. {a} Dep. General Microbiol., M. Curie-Sklodowska Univ., Akad. 19, 20-033 Lublin, Poland

Leto, J., M. Knezevic, et al. (1998). Morphological characteristics of red clover cultivars in the lowland and hilly-mountain region. Poljoprivredna Znanstvena Smotra 63(3): 139-146. {a} Department of Field Crops Forage and Grassland, Faculty of Agriculture University of Zagreb, Svetosimunska cesta 25, 10000, Zagreb, Croatia

Lothenbach, B., R. Krebs, et al. (1998). Immobilization of cadmium and zinc in soil by Al-montmorillonite and gravel sludge. European Journal of Soil Science 49(1): 141-148. {a} Inst. Environ. Protection Agric. Liebefeld, Swiss Federal Res. Stn. Agroecol. Agric., 3003 Bern, Switzerland

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

Malengier, M. and B. E. Van (1998). Selection for resistance to powdery mildew in red clover (Trifolium pratense L.). Mededelingen Faculteit Landbouwkundige en Toegepaste Biologische Wetenschappen Universiteit Gent 63(3b): 925-926. Dep. Plantengenet. Veredeling, Plants Genet. Breed., Caritasstr. 21, B-9090 Melle, Belgium

Martensson, A. M., I. Rydberg, et al. (1998). Potential to improve transfer of N intercropped systems by optimising host-endophyte combinations. Plant and Soil 205(1): 57-66. {a} Soil Sci. Dep., P.O. Box 7104, Swedish Univ. Agric. Sci., SE-750 07 Uppsala, Sweden

Martin, J., R. I. Garcia, et al. (1998). Superoxide dismutase and arbuscular mycorrhizal fungi: Relationship between the isoenzyme pattern and the colonizing fungus. Symbiosis 24(2): 247-257. {a} Dep. Microbiol. Suelo y Sist. Simbioticos, Estacion Exp. Zaidin, C.S.I.C., Apdo. 419, 18008 Granada, Spain

Mazur, A., J. Wielbo, et al. (1998). Molecular characterization and symbiotic importance of prsD gene of Rhizobium leguminosarum bv. trifolii TA1. Acta Biochimica Polonica 45(4): 1067-1073. {a} Department of General Microbiology, Maria Curie-Sklodowska University, Akademicka 19, 20-033, Lublin, Poland

McLean, N. L. and J. Nowak (1998). Inheritance of somatic embryogenesis in red clover (Trifolium pratense L.). Theoretical and Applied Genetics 97(4): 557-562. {a} Dep. Plant Sci., Nova Scotia Agric. Coll., PO Box 550 Truto, NS B2N 5E3, Canada

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

Moskvin, O. V., N. S. Novichkova, et al. (1998). Induction of chlorophyll a fluorescence in clover leaves grown under various conditions of nutrition and illumination. Fiziologiya Rastenii Moscow 45(3): 413-418. {a} Inst. Soil Sci. Photosynth., Russ. Acad. Sci., Pushchino 142292, Russia

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

Often, A. (1998). The use of Anthyllis vulneraria s.l. in artificial meadows in Norway, with some additional data on other "old" fodder plants. Blyttia 56(4): 208-219. {a} Norges landbrukshogskole, Institutt for biologi og naturforvaltning, boks 5014, N-1432, As, Norway

Poli, C. H. E. C., J. Hodgson, et al. (1998). The effect of secondary compounds of birdsfoot trefoil and red clover on dairy cow grazing preferences. Proceedings of the New Zealand Society of Animal Production 58: 110-112. {a} Coll. Sci., Massey Univ., Palmerston North, New Zealand

Rehm, G. W., C. C. Sheaffer, et al. (1998). Methods of establishing legumes on sandy soils. Journal of Production Agriculture 11(1): 108-112. {a} Dep. Soil Water Climate, Univ. Minn., St. Paul, MN 55108, USA

Rusterholz, H. P. and A. Erhardt (1998). Effects of elevated CO2 on flowering phenology and nectar production of nectar plants important for butterflies of calcareous grasslands. Oecologia Berlin 113(3): 341-349. {a} Botanisches Inst., Univ. Basel, Schoenbeinstrasse 6, CH-4056 Basel, Switzerland

Schmid, H. P. and H. P. Stauffer (1998). Parasites and flower choice of bumblebees. Animal Behaviour 55(4): 819-825. {a} ETH Zuerich, Experimental Ecol., ETH-Zentrum NW, CH-8092 Zuerich, Switzerland

Shipitalo, M. J. and W. M. Edwards (1998). Runoff and erosion control with conservation tillage and reduced-input practices on cropped watersheds. Soil and Tillage Research 46(1-2): 1-12. {a} USDA-Agric. Res. Service, North Appalachian Exp. Watershed, P.O. Box 488, Coshocton, OH 43812-0488, USA

Singer, J. W. and W. J. Cox (1998). Agronomics of corn production under different crop rotations in New York. Journal of Production Agriculture 11(4): 462-468. {a} Dep. Soil Crop Atmospheric Sci., Cornell Univ., Ithaca, NY, USA

Singer, J. W. and W. J. Cox (1998). Corn growth and yield under different crop rotation, tillage, and management systems. Crop Science 38(4): 996-1003. {a} Dep. Soil Crop Atmospheric Sci., Cornell Univ., Ithaca, NY 14853, USA

Sjakste, T., R. I. Roldan, et al. (1998). The use of AFLP fingerprinting in polymorphism evaluation of forage crops Phleum pratense and Trifolium pratense. Proceedings of the Latvian Academy of Sciences Section B Natural Exact and Applied Sciences 52(6): 328-331. {a} Institute of Biology, University of Latvia, Miera iela 3, Salaspils, LV-2169, Latvia

Smith, R. R., C. R. Grau, et al. (1998). First report of Mycoleptodiscus terrestris infecting forage legumes and soybeans in Wisconsin. Plant Disease 82(1): 126. {a} USDA-ARS, US Dairy Forage Res. Cent., Madison, WI 53706, USA

Smith, R. S., D. J. Bishop, et al. (1998). Register of Australian herbage plant cultivars: B. Legumes. 1. Clover. (b) Trifolium pratense L. (red clover) cv. Astred. Australian Journal of Experimental Agriculture 38(3): 319-320. {a} Dep. Primary Ind. and Fish., P.O. Box 46, Kings Meadows, TAS 7249, Australia

Soon, Y. K. (1998). Crop residue and fertilizer management effects on some biological and chemical properties of a Dark Grey Solod. Canadian Journal of Soil Science. Nov. 78(4): 707-713. {a} Research Branch, Agriculture and Agri-Food Canada, Beaverlodge, Alberta, T0H 0C0, Canada

Soon, Y. K. and A. L. Darwent (1998). Effect of integrated management of couch grass (Elytrigia repens) on soil quality and crop nutrition. Journal of Agricultural Science 130(3): 323-328. {a} Agric. Agri-Food Can., PO Box 29, Beaverlodge, AB T0H 0C0, Canada

Sturz, A. V. and B. R. Christie (1998). The potential benefits from cultivar specific red clover - potato crop rotations. Annals of Applied Biology 133(3): 365-373. {a} Prince Edward Island Department of Agriculture and Forestry, Charlottetown, Prince Edward Island, C1A 7N3, Canada

Sturz, A. V., B. R. Christie, et al. (1998). Associations of bacterial endophyte populations from red clover and potato crops with potential for beneficial allelopathy. Canadian Journal of Microbiology 44(2): 162-167. {a} Prince Edward Island Dep. Agric. and For., P.O. Box 1600, Charlottetown, PE C1A 7M8, Canada

Swanton, C. J., K. Chandler, et al. (1998). Control of established alfalfa (Medicago sativa L.) and red clover (Trifolium pratense L.) in a no-till corn (Zea mays L.) cropping sequence. Canadian Journal of Plant Science 78(1): 175-177. Dep. Crop Science, Univ. Guelph, Guelph, ON N1G 2W1, Canada

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

Tiffin, P. and O. B. Hesterman (1998). Response of corn grain yield to early and later killed red clover green manure and subirrigation. Journal of Production Agriculture 11(1): 112-121. {a} Box 90325, Zoology Dep., Duke Univ., Durham, NC 27707, USA

Vavrek, M. C. (1998). Within-population genetic diversity of Taraxacum officinale (Asteraceae): Differential genotype response and effect on interspecific competition. American Journal of Botany 85(7): 947-954. {a} Louisiana Tech Univ., Sch. Biol. Sci., PO Box 3179, Ruston, LA 71272-0001, USA

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

Walshaw, J., G. W. Mathison, et al. (1998). Characterization of forages by differential scanning calorimetry and prediction of their chemical composition and nutritive value. Animal Feed Science and Technology 71(3-4): 309-323. {a} Dep. Agric. Food Nutr. Sci., Univ. Alberta, Edmonton, AB T6G 2P5, Canada

Wassermann, V. D., A. J. Kruger, et al. (1998). Regrowth potential of Trifolium resupinatum in comparison to other temperate pasture legumes. Applied Plant Science 12(1): 24-27. {a} Transvaal Reg., Private Bag X180, Pretoria, 0001, South Africa

Wiersma, D. W., R. R. Smith, et al. (1998). Harvest management effects on red clover forage yield, quality, and persistence. Journal of Production Agriculture 11(3): 309-313. {a} Univ. Wis. Agric. Res. Stn., 8396 Yellowstone Dr., Marshfield, WI 54449, USA

Wohlfahrt, G., M. Bahyn, et al. (1998). A nitrogen sensitive model of leaf carbon dioxide and water vapour gas exchange: Application to 13 key species from differently managed mountain grassland ecosystems. Ecological Modelling 113(1-3): 179-199. {a} Inst. Botanik, Univ. Innsbruck, Sternwartestr. 15, A-6020 Innsbruck, Austria

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

Yamoah, C. F., G. E. Varvel, et al. (1998). Long-term nitrogen use and nitrogen-removal index in continuous crops and rotations. Field Crops Research 57(1): 15-27. {a} Dep. Agronomy, Univ. Nebraska-Lincoln, Lincoln, NE 68583-0949, USA

Yokota, T., H. Sakai, et al. (1998). Alectrol and orobanchol, germination stimulants for Orobanche minor, from its host red clover. Phytochemistry Oxford 49(7): 1967-1973. {a} Dep. Biosci., Teikyo Univ., 1-1 Toyosatodai, Utsunomiya 320-8551, Japan

Zaplishnyi, M. V., y. O. I. Tret, et al. (1998). Optimizing the composition of a growth regulator mixture used to treat the seeds of annual and perennial grasses. Agrokhimiya(3): 45-48. Kuban State Agrar. Univ., ul. Kalinina 13, Krasnodar 350044, Russia

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

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

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

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

Algan, G. and H. N. Bakar (1997). The ultrastructure of the mature embryo sac in the natural tetraploid of red clover (Trifolium pratense L.) that has a very low rate of seed formation. Acta Societatis Botanicorum Poloniae 66(1): 13-20. {a} Dep. Biol., Fac. Sci., Univ. Ankara, Ankara 06100, Turkey

Bakar, N. and G. Algan (1997). Electron microscopic examination of the development of the endothelium in Trifolium pratense L. during embryogenesis. Turkish Journal of Botany 21(3): 137-144. Dep. Biol., Fac. Sci., Univ. Ankara, Ankara, Turkey

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

Bottenberg, H., J. Masiunas, et al. (1997). Yield and quality constraints of cabbage planted in rye mulch. Biological Agriculture and Horticulture 14(4): 323-342. {a} Dep. Natural Resources Environ. Sci., Univ. Ill., Urbana, IL 61801, USA

Brendel, O., C. Wheeler, et al. (1997). A statistical comparison of the two-source delta15N and 15N isotope dilution methods for estimating plant N2-fixation using Trifolium pratense and Lolium perenne. Australian Journal of Plant Physiology 24(5): 631-636. {a} Technische Universitaet Muenchen, D-80290 Muenchen, Germany

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

Broersma, K., J. A. Robertson, et al. (1997). The effects of diverse cropping systems on aggregation of a Luvisolic soil in the Peace River region. Canadian Journal of Soil Science 77(2): 323-329. {a} Agriculture Agri-Food Canada, Range Res. Station, 3015 Ord Road, Kamloops, BC V2B 8A9, Canada

Burket, J. Z., D. D. Hemphill, et al. (1997). Winter cover crops and nitrogen management in sweet corn and broccoli rotations. Hortscience 32(4): 664-668. {a} Dep. Crop Soil Sci., Oregon State Univ., Corvallis, OR 97331-7306, USA

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

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Elmosly, W. A. and S. M. F. Abdel (1997). Transfer characteristics and uptake of nickel by red clover grown on nickel amended alluvial soils of an arid zone. Agriculture Ecosystems and Environment 65(1): 49-57. {a} Fac. Agric. Environ. Sci., Dep. Natl. Resour., MacDonald Campus McGill Univ., Ste. Anne-de-Bellevue, PQ H9X 3V9, Canada

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Harmoney, K. R., K. J. Moore, et al. (1997). Determination of pasture biomass using four indirect methods. Agronomy Journal 89(4): 665-672. {a} Dep. Agronomy, 2101 Agronomy Hall, Iowa State Univ., Ames, IA 50011, USA

Hoffman, P. C., D. K. Combs, et al. (1997). Performance of lactating dairy cows fed red clover or alfalfa silage. Journal of Dairy Science 80(12): 3308-3315. {a} Dep. Dairy Sci., Univ. Wis., Madison, WI 53706, USA

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

Hoveland, C. S., J. H. Bouton, et al. (1997). No-till seeding of red clover into tall fescue as influenced by grass suppression, fungicide, and nutrients. Journal of Production Agriculture 10(4): 561-564. {a} Dep. Crop Soil Sci., Univ. Ga., Athens, GA 30602, USA

Janczarek, M., S. T. Urbanik, et al. (1997). Effect of authentic flavonoids and the exudate of clover roots on growth rate and inducing ability of nod genes of Rhizobium leguminosarum bv. trifolii. Microbiological Research 152(1): 93-98. {a} Dep. General Microbiol., M. Curie-Sklodowska Univ., Akademicka 19, PL-20-033 Lublin, Poland

Janovicek, K. J., T. J. Vyn, et al. (1997). No-till corn response to crop rotation and in-row residue placement. Agronomy Journal 89(4): 588-596. {a} Dep. Crop Sci., Univ. Guelph, Guelph, ON N1G 2W1, Canada

Kouame, C. N., K. H. Quesenberry, et al. (1997). Response to root-knot nematodes of a germplasm collection of red clover and related species. Genetic Resources and Crop Evolution 44(5): 439-445. {a} Inst. Savanes, IDESSA, 01 BP 633 Bouake 01, Ivory Coast

Lavrencic, A., B. Stefanon, et al. (1997). An evaluation of the Gompertz model in degradability studies of forage chemical components. Animal Science Pencaitland 64(3): 423-431. {a} Zootech. Dep., Univ. Ljubljana, Groblje 3, SLO-1230 Domzale, Slovenia

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

Martin, P. H., B. E. Coulman, et al. (1997). Genetics of resistance to alfalfa mosaic virus in red clover. Canadian Journal of Plant Science 77(4): 601-605. {a} Res. Cent., Agric. Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada

Meier, M. and J. Fuhrer (1997). Effect of elevated CO2 on orchard grass and red clover grown in mixture at two levels of nitrogen or water supply. Environmental and Experimental Botany 38(3): 251-262. {a} Swiss Fed. Res. Stn. Agroecol. Agric., Inst. Environ. Protection Agric. Liebefeld, CH-3003 Bern, Switzerland

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Nedelnik, J. and J. Repkova (1997). Phytotoxicity of some Fusarium toxins to red clover and alfalfa. Cereal Research Communications 25(3 Part 1): 507-509. Res. Inst. Fodder Plants Ltd., 664 41 Troubsko, Czech Republic

Nedelnik, J., S. Vaverka, et al. (1997). Content of medicarpin in red clover cultivars after infection with BYMV and Fusarium spp. Ochrana Rostlin 33(3): 161-170. {a} Kzycumny ustav picniarsky, spol. s.r.o., 664 41 Troubsko, Czech Republic

Nedelnik, J., S. Vaverka, et al. (1997). Induction of medicarpin in red clover varieties after Fusarium complex inoculation. Cereal Research Communications 25(3 Part 2): 791-792. {a} Res. Inst. Fodder Plants Ltd., Troubsko, Czech Republic

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

Ortega, F. M., K. A. Mizen, et al. (1997). Responses of red clover (Trifolium pratense) cultivars to stem nematode (Ditylenchus dipsaci). Tests of Agrochemicals and Cultivars(18): 38-39. {a} Inst. Invest. Agropecuarias, CRI Carillanca, Temuco, Casilla 58-D, Chile

Ortega, F. M., L. Roberts, et al. (1997). Responses of red clover (Trifolium pratense) cultivars to clover rot (Sclerotinia trifoliorum). Tests of Agrochemicals and Cultivars(18): 36-37. {a} Inst. Invest. Agropecuarias, CRI Carillanca, Temuco, Casilla 58-D, Chile

Page, D., D. Delclos, et al. (1997). Sclerotinia rot resistance in red clover: Identification of RAPD markers using bulked segregant analysis. Plant Breeding 116(1): 73-78. Station Genetique Amelioration Plants, INRA, BV 1540, F-21034 Dijon Cedex, France

Plaskowska, E. (1997). The fungi communities of the soil environment of Triticum aestivum and its forecrops: Hordeum vulgare, Vicia faba ssp. minor and Trifolium pratense. Acta Mycologica 32(2): 265-274. {a} Dep. Plant Pathol., Acad. Agric., Cybulskiego 32, PL-50-205 Wroclaw, Poland

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Rammer, C., P. Lingvall, et al. (1997). Ensiling of manured crops: Does repeated spreading of slurry increase the hygienic risk? Journal of the Science of Food and Agriculture 73(3): 329-336. {a} Dep. Anim. Nutr. Management, Swedish Univ. Agric. Sci., Kungsaengen Res. Centre, 753 23 Uppsala, Sweden

Rogers, M. E., C. L. Noble, et al. (1997). Identifying suitable temperate forage legume species for saline areas. Australian Journal of Experimental Agriculture 37(6): 639-645. Inst. Sustainable Irrigated Agric., Dep. Nat. Resources Environ., Private Bag, Ferguson Rd., Tatura, Vic. 3616, Australia

Rumball, W., R. G. Keogh, et al. (1997). 'Grasslands G27' red clover (Trifolium pratense L.). New Zealand Journal of Agricultural Research 40(3): 369-372. AgRes. Grassl., Private Bag 11008, Palmerston North, New Zealand

Soon, Y. K. (1997). Effects of rate, placement, and frequency of P application on yield and P content of bromegrass-red clover herbage and soil P distribution. Canadian Journal of Soil Science 77(1): 77-81. Agric. AgriFood Canada, Res. Branch, PO Box 29, Beaverlodge, AB T0H 0C0, Canada

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Sturz, A. V., B. R. Christie, et al. (1997). Biodiversity of endophytic bacteria which colonize red clover nodules, roots, stems and foliage and their influence on host growth. Biology and Fertility of Soils 25(1): 13-19. {a} Prince Edward Island Dep. Agric. Forestry, PO Box 1600, Charlottetown, Prince Edward Island C1A 7N3, Canada

Taylor, N. L. (1997). Registration of a red clover genetic stock pool. Crop Science 37(5): 1674. Dep. Agric., Univ. Ky., Lexington, KY 40546-0091, USA

Venuto, B. C., R. E. Joost, et al. (1997). Differential red clover germplasm response to defoliation and fungicide application. Grass and Forage Science 52(4): 449-453. {a} La. State Univ. Agric. Cent., Dep. Agron., Baton Rouge, LA 70803-2110, USA

Vilarino, A., B. Frey, et al. (1997). MES (2-(N-morpholine)-ethane sulphonic acid) buffer promotes the growth of external hyphae of the arbuscular mycorrhizal fungus Glomus intraradices in an alkaline sand. Biology and Fertility of Soils 25(1): 79-81. {a} Inst. Investigaciones Agrobiologicas Galicia, Consejo Superior Investigaciones Cientificas, Apdo 122, E-15080 Santiago de Compostela, Spain

Vilarino, A. and M. J. Sainz (1997). Treatment of Glomus mosseae propagules with 50 percent sucrose increases spore germination and inoculum potential. Soil Biology and Biochemistry 29(9-10): 1571-1573. {a} Dpe. Fisol. Veg., Inst. Invest. Agrobiol. Galicia, CSIC, Apdo. 122, E-15080 Santiago de Compostela, Spain

Voronkov, M. G., N. V. Semenova, et al. (1997). N-mono- and N-bis-(2-hydroxyethyl)amides of aroxyacetic acids and their influence on the growth and development of leguminous plants. Izvestiya Akademii Nauk Seriya Biologicheskaya Moscow(1): 92-95. Irkutsk Inst. Org. Chem., Sib. Div., Russ. Acad. Sci., ul. Favorskogo 1, Irkutsk 664033, Russia

Warembourg, F. R., F. Lafont, et al. (1997). Economy of symbiotically fixed nitrogen in red clover (Trifolium pratense L.). Annals of Botany London 80(4): 515-523. {a} Centre d'Ecol. Fonctionnelle Evol., CNRS, 1919 Route de Mende, 34293 Montpellier Cedex 5, France

Wivstad, M. (1997). Plant morphology and content of nitrogen, cell wall and lignin at different phenological stages of red clover and yellow sweetclover. Swedish Journal of Agricultural Research 27(1): 3-14. Swedish Univ. Agric. Sci., Dep. Crop Production Sci., P.O. Box 7043, S-750 07 Uppsala, Sweden

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Xie, C., S. Xu, et al. (1997). Multistage selection indices for maximum genetic gain and economic efficiency in red clover. Euphytica 98(1-2): 75-82. {a} Dep. Bot. Plant Sci., Univ. California, Riverside, CA 92521-0124, USA

Algan, G. and H. N. Bakar (1996). Light and electron microscopic examination of the embryo and endosperm development in the natural tetraploid Trifolium pratense L. Israel Journal of Plant Sciences 44(4): 273-288. {a} Dep. Biol., Fac. Sci., Univ. Ankara, Ankara 06100, Turkey

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

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Bommarco, R. and B. Ekbom (1996). Variation in pea aphid population development in three different habitats. Ecological Entomology 21(3): 235-240. Dep. Entomology, Swedish Univ. Agric. Sci., P.O. Box 7044, S-750 07 Uppsala, Sweden

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

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Broersma, K., N. G. Juma, et al. (1996). Net nitrogen mineralization from a Gray Luvisol under diverse cropping systems in the Peace River region of Alberta. Canadian Journal of Soil Science 76(2): 117-123. {a} Agric. and Agri.-Food Can., Kamloops Range Res. Stn., 3015 Ord Road, Kamloops, BC V2B 8A9, Canada

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

Burda, S. and S. Suchecki (1996). The content of isoflavones in red clover (T. pratense L.) breeding material. Acta Agrobotanica 49(1-2): 89-94. {a} Zaklad Biochem. i Jakosci Plonow, Inst. Uprawy Nawozenia i Gleboznawstwa, Osada Palacowa, 24-100 Pulawy, Poland

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Call, N. M., K. H. Quesenberry, et al. (1996). Meloidogyne arenaria development in three clover populations. Crop Science 36(5): 1393-1397. {a} Agron. Dep., Univ. Fla., Gainesville, FL 32611-0500, USA

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

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

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Gigon, A. and A. Leutert (1996). The dynamic keyhole-key model of coexistence to explain diversity of plants in limestone and other grasslands. Journal of Vegetation Science 7(1): 29-40. {a} Geobotanisches Inst., Eidgenoessische Technische Hochschule, Gladbachstr. 114, CH-8044 Zurich, Switzerland

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Guldan, S. J., C. A. Martin, et al. (1996). Dry-matter and nitrogen yields of legumes interseeded into sweet corn. Hortscience 31(2): 206-208. {a} Alcade Sustainable Agric. Sci. Center, Dep. Agron. Hortico, New Mexico State Univ., P.O. Box 159, Alcalde, NM 87511, USA

Hagen, M. J. and J. L. Hamrick (1996). Population level processes in Rhizobium leguminosarum bv. trifolii: The role of founder effects. Molecular Ecology 5(6): 707-714. {a} USDA-ARS Horticultural Crop Res. Lab., 3420 N.W. Orchard Avenue, Corvallis, OR 97330, USA

Hagen, M. J. and J. L. Hamrick (1996). A hierarchical analysis of population genetic structure in Rhizobium leguminosarum bv. trifolii. Molecular Ecology 5(2): 177-186. {a} Hortic. Crops Res. Lab., 3420 NW Orchard Ave., Corvallis, OR 97330, USA

Hall, M. H. and L. E. Marshall (1996). Harvest management to maximize dry matter and nutrient yield, and economic return of red clover. Journal of Production Agriculture 9(3): 407-410. {a} Dep. Agron., 116 A.S.I. Build., Pa. State Univ., University Park, PA 16802, USA

He, X. G., L. Z. Lin, et al. (1996). Analysis of flavonoids from red clover by liquid chromatography-electrospray mass spectrometry. Journal of Chromatography A 755(1): 127-132. Res. Lab. Natural Products Chem., East Earth Herb Inc., 4091 W. 11th Avenue, Eugene, OR 97402, USA

Helgadottir, A. (1996). Red clover (Trifolium pratense L.) varieties for northern regions. Acta Agriculturae Scandinavica Section B Soil and Plant Science 46(4): 218-223. Dep. Agronomy, Agric. Res. Inst., Keldnaholt, IS-112 Reykjavik, Iceland

Hill, M. J., C. Mulcahy, et al. (1996). Perennial legumes for the high rainfall zone of eastern Australia. 2. Persistence and potential adaptation zones. Australian Journal of Experimental Agriculture 36(2): 165-175. CSIRO Div. Anim. Production, Pastoral Res. Lab., Armidale, NSW 2350, Australia

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

Jablonsi, W. and M. Widera (1996). Ecological and economical aspects of phytocenosis formation at the fallowing areas. Acta Agrobotanica 49(1-2): 3-11. {a} Stacja Doswiadczalna IUNG Jelcz-Laskowice, ul. Lakowa 1, 55-230 Jelcz-Laskowice, Poland

Jackson, F. S., W. C. McNabb, et al. (1996). The condensed tannin content of a range of subtropical and temperate forages and the reactivity of condensed tannin with ribulose-1,5-bis-phosphate carboxylase (Rubisco) protein. Journal of the Science of Food and Agriculture 72(4): 483-492. {a} AgResearch Grasslands, Private Bag 11008, Palmerston North, New Zealand

Kirkham, F. W., J. O. Mountford, et al. (1996). The effects of nitrogen, potassium and phosphorus addition on the vegetation of a Somerset peat moor under cutting management. Journal of Applied Ecology 33(5): 1013-1029. {a} ADAS Wolverhampton, Woodthorne, Wergs Road, Wolverhampton WV6 8TQ, UK

Kongkiatngam, P., M. J. Waterway, et al. (1996). Genetic variation among cultivars of red clover (Trifolium pratense L.) detected by RAPD markers amplified from bulk genomic DNA. Euphytica 89(3): 355-361. Plant Sci. Dep., Macdonald Campus of McGill Univ., 21111 Lakeshore, Ste-Anne-de-Bellevue, Quebec, H9X 3V9, Canada

Kwiatkowski, T. and J. Pres (1996). Clover disease. Instytut Zootechniki Biuletyn Informacyjny 34(1): 19-25. {a} Akad. Rolnicza Wroclaw, Katedra i Klin. Chorob Wewnetrznych, Wydzial Medycyny Weterynaryjnej, 50-366 Wroclaw, pl. Grunwaldzki 47, Poland

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

Lattemae, P., C. Ohlsson, et al. (1996). Influence of molasses or molasses-formic acid treated red clover silage on feed intake and milk yield. Swedish Journal of Agricultural Research 26(2): 91-100. {a} Lab. Feeds, Estonian Res. Inst. Agriculture, Pollu str. 1-52, EE3400 SAKU Harjumaa, Estonia

Lattemae, P., C. Ohlsson, et al. (1996). The combined effect of molasses and formic acid on quality of red-clover silage. Swedish Journal of Agricultural Research 26(1): 31-41. {a} Lab. Feeds, Estonian Res. Inst. Agriculture, Pollu str. 1-52, EE3400 SAKU Harjumaa, Estonia

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

Leita, L., G. Muhlbachova, et al. (1996). Investigation of the use of honey bees and honey bee products to assess heavy metals contamination. Environmental Monitoring and Assessment 43(1): 1-9. {a} Dipartimento di Produzione Vegetale Tecnol. Agrarie, Via delle Scienze 208, I-33100 Udine, Italy

Li, R., J. J. Volenec, et al. (1996). Seasonal changes in nonstructural carbohydrates, protein, and macronutrients in roots of alfalfa, red clover, sweetclover, and birdsfoot trefoil. Crop Science 36(3): 617-623. {a} Dep. Agronomy, Purdue Univ., West Lafayette, IN 47907-1150, USA

Marek, K. M., M. Deryto, et al. (1996). Tn5 insertion mutants of Pseudomonas sp. 267 defective siderophore production and their effect on clover (Trifolium pratense) nodulated with Rhizobium leguminosarum bv. trifolii. Plant and Soil 179(2): 269-274. {a} Dep. General Microbiol., Univ. M. Curie-Sklodowska, Akademicka 19, PL 20-033 Lublin, Poland

Miller, A. C. E., G. W. Cussans, et al. (1996). The fate of morphologically different populations of Arrhenatherum elatius transplanted into arable and semi-natural habitats. Agriculture Ecosystems and Environment 60(2-3): 107-120. {a} Crop Dis. Management Dep., IACR-Rothamsted, Harpenden AL5 2JQ, UK

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

Ohlander, L., G. Bergkvist, et al. (1996). Yield of catch crops and spring barley as affected by time of undersowing. Acta Agriculturae Scandinavica Section B Soil and Plant Science 46(3): 161-168. {a} Dep. Crop Production Sci., Swedish Univ. Agric. Sci., P.O. Box 7043, S-750 07 Uppsala, Sweden

Pemberton, I. J., G. R. Smith, et al. (1996). Occurrence of Languria mozardi in six Trifolium species. Southwestern Entomologist 21(4): 457-463. Texas A and M Univ. Agric. Research Extension Center, Overton, TX 75684, USA

Pleijel, H., G. P. Karlsson, et al. (1996). Exposure of a grass-clover mixture to ozone in open-top chambers-effects on yield, quality and botanical composition. Agriculture Ecosystems and Environment 59(1-2): 55-62. {a} Swedish Environmental Res. Inst., P.O. Box 47086, S-402 58 Goteborg, Sweden

Quesenberry, K. H., D. S. Wofford, et al. (1996). Production of red clover transgenic for neomycin phosphotransferase II using Agrobacterium. Crop Science 36(4): 1045-1048. {a} Dep. Agron., P.O. Box 110500, Univ. Florida, Gainesville, FL 32611-0500, USA

Robinson, C. A., R. M. Cruse, et al. (1996). Cropping system and nitrogen effects on mollisol organic carbon. Soil Science Society of America Journal 60(1): 264-269. {a} Div. Agric., West Tex. A and M Univ., WTAMU, Box 998, Canyon, TX 79016, USA

Rodhe, L., E. Salomon, et al. (1996). Spreading of farmyard manure to ley with different methods: Yield and silage quality. Swedish Journal of Agricultural Research 26(1): 43-51. {a} Swedish Inst. Agricultural Engineering, P.O. Box 7033, S-750 07 Uppsala, Sweden

Runge, F. (1996). The population of an ant-hill with phanerogams. Floristische Rundbriefe 30(1): 30-31. Diesterwegstr. 63, D-48159 Munester, Germany

Scherer, H. W. and G. Ahrens (1996). Depletion of non-exchangeable NH-4-N in the soil-root interface in relation to clay mineral composition and plant species. European Journal of Agronomy 5(1-2): 1-7. {a} Inst. Agric. Chem., Univ. Bonn, Meckenheimer Allee 176, 53115 Bonn, Germany

Scherer, H. W. and A. Lange (1996). N-2 fixation and growth of legumes as affected by sulphur fertilization. Biology and Fertility of Soils 23(4): 449-453. {a} Inst. Agric. Chemistry, Univ. Bonn, Meckenheimer Allee 176, D-53115 Bonn, Germany

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

Shelyuto, B. V. and A. A. Shelyuto (1996). Agrotechnics of the red clover and its winter-enduring. Vyestsi Akademii Ahrarnykh Navuk Byelarusi(2): 34-37. Beloruss. Agric. Acad., Minsk, Belarus

Smith, M. W., D. C. Arnold, et al. (1996). Influence of ground cover on phytophagous and saprophagous arthropods in pecan trees. Southwestern Entomologist 21(3): 303-316. {a} Dep. Horticulture Landscape Architecture, Oklahoma State Univ., Stillwater, OK 74078, USA

Smith, M. W., D. C. Arnold, et al. (1996). Influence of ground cover on beneficial arthropods in pecan. Biological Control 6(2): 164-176. {a} Dep. Horticulture Landscape Architecture, Oklahoma State Univ., Stillwater, OK 74078, USA

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

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

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

Sturz, A. V. and B. R. Christie (1996). Endophytic bacteria of red clover as agents of allelopathic clover-maize syndromes. Soil Biology and Biochemistry 28(4-5): 583-588. {a} Agric. Agri-Food Canada, Res. Stn., PO Box 1210, Charlottetown, P.E.I. C1A 7M8, Canada

Swanton, C. J., K. Chandler, et al. (1996). Integration of cover crops into no-till and ridge-till wheat (Triticum aestivum L.)-corn (Zea mays L.) cropping sequence. Canadian Journal of Plant Science 76(1): 85-91. Dep. Crop Sci., Univ. Guelph, Guelph, ON N1G 2W1, Canada

Venuto, B. C., R. R. Smith, et al. (1996). Temperature dependent reaction and selection response of two red clover populations to fusarium wilt. Crop Science 36(6): 1477-1481. {a} La. State Univ. Agric. Cent., Dep. Agron., Baton Rouge, LA 70803-7511, USA

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

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

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

Wright, S. F., S. M. Franke, et al. (1996). Time-course study and partial characterization of a protein on hyphae of arbuscular mycorrhizal fungi during active colonization of roots. Plant and Soil 181(2): 193-203. {a} Soil Microbial Systems Lab., United States Dep. Agric.-Agric. Res. Serv., Beltsville, MD 20705, USA

Young, W. C. I. and H. W. Youngberg (1996). Cropping systems for perennial ryegrass seed production: II. Minimum tillage systems for changing cultivars in certified seed production. Agronomy Journal 88(1): 78-82. {a} Dep. Crop Soil Sci., Oregon State Univ., Corvallis, OR 97331-3002, USA

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

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

Zhu, Y., C. C. Sheaffer, et al. (1996). Forage yield and quality of six annual Medicago species in the north-central USA. Agronomy Journal 88(6): 955-960. {a} Dep. Agron. Plant Genetics, Univ. Minn., St. Paul, MN 55108, USA

Adams, N. R. (1995). Organizational and activational effects of phytoestrogens on the reproductive tract of the ewe. Proceedings of the Society for Experimental Biology and Medicine 208(1): 87-91. CSIRO Div. Animal Production, PO, Wembley WA 6014, Australia

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

Bialek, U., A. Skorupska, et al. (1995). Disturbed gene expression and bacteroid development in Trifolium pratense root nodules induced by a Tn5 mutant of Rhizobium leguminosarum bv. trifolii defective in exopolysaccharide synthesis. Planta Heidelberg 197(1): 184-192. {a} Dep. Plant Cytol. Morphol., Wageningen Agric. Univ., Arboretumlaan 4, 6703 BD Wageningen, Netherlands

Bidlack, J. E., D. R. Buxton, et al. (1995). Phenylalanine ammonia lyase as a precursory enzyme of legume stem lignification. Canadian Journal of Plant Science 75(1): 135-140. {a} Biol. Dep., Univ. Central Oklahoma, 100 North University Drive, Edmond, OK 73034, USA

Blanchet, K. M., J. R. George, et al. (1995). Establishment and persistence of legumes interseeded into switchgrass. Agronomy Journal 87(5): 935-941. {a} USDA-ARS, Field Crops Res. Unit, Iowa State Univ., Ames, IA 50011, USA

Bloemberg, G. V., E. Kamst, et al. (1995). A central domain of Rhizobium NodE protein mediates host specificity by determining the hydrophobicity of fatty acyl moieties of nodulation factors. Molecular Microbiology 16(6): 1123-1136. {a} Leiden Univ., Inst. Mol. Plant Sci., Wassenaarseweg 64, 2333 AL Leiden, Netherlands

Bommarco, R. and B. Ekbom (1995). Phenology and prediction of pea aphid infestations on peas. International Journal of Pest Management 41(2): 109-113. Dep. Entomology, Swed. Univ. Agric. Sci., PO Box 7044, S-750 07 Uppsala, Sweden

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

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

Byers, R. A. (1995). Factors affecting rearing of clover root curculio (Coleoptera: Curculionidae) in cone containers. Journal of Economic Entomology 88(2): 407-414. Pasture Syst. Watershed Management Res. Unit., US Regional Pasture Res. Lab., USDA ARS, University Park, PA 16802, USA

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

Costello, M. J. and M. A. Altieri (1995). Abundance, growth rate and parasitism of Brevicoryne brassicae and Myzus persicae (Homoptera: Aphididae) on broccoli grown in living mulches. Agriculture Ecosystems and Environment 52(2-3): 187-196. {a} Lab. Biological Control, UC Berkeley, Kearney Agricultural Cent., 9240 S. Riverbend Ave., Parlier, CA 93648, USA

Coulman, B. E. and M. Lambert (1995). Selection for resistance to root rot caused by Fusarium spp. in red clover (Trifolium pratense L.). Canadian Journal of Plant Science 75(1): 141-146. {a} Res. Stn., Agric. Agri-Food Canada, 107 Science Place, Saskatoon, Saskatchewan S7N OX2, Canada

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

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

Dou, Z., R. H. Fox, et al. (1995). Seasonal soil nitrate dynamics in corn as affected by tillage and nitrogen source. Soil Science Society of America Journal 59(3): 858-864. {a} Dep. Agron., Pa. State Univ., University Park, PA 16802, USA

Foshee, W. G., W. D. Goff, et al. (1995). Orchard floor crops reduce growth of young pecan trees. Hortscience 30(5): 979-980. {a} Dep. Hortic., Ala. Agric. Experiment Station, Auburn Univ., Auburn, AL 36849, USA

Gegear, R. J. and T. M. Laverty (1995). Effect of flower complexity on relearning flower-handling skills in bumble bees. Canadian Journal of Zoology 73(11): 2052-2058. Dep. Zool., Univ. Western Ontario, London, ON N6A 5B7, Canada

George, J. R., K. M. Blanchet, et al. (1995). Yield and botanical composition of legume-interseeded vs. nitrogen-fertilized switchgrass. Agronomy Journal 87(6): 1147-1153. {a} USDA-ARS, Field Crops Res. Unit, Iowa State Univ., Ames, IA 50011, USA

Gerke, J. and U. Meyer (1995). Phosphate acquisition by red clover and black mustard on a humic podzol. Journal of Plant Nutrition 18(11): 2409-2429. Inst. Agrikulturchemie, von Siebold Str. 6, 37075 Goettingen, Germany

Guillard, K., G. F. Griffin, et al. (1995). Nitrogen utilization of selected cropping systems in the U.S. northeast: I. Dry matter yield, N uptake, apparent N recovery, and N use efficiency. Agronomy Journal 87(2): 193-199. {a} Dep. Plant Sci. U-67, Univ. Connecticut, 1376 Storrs Road, Storrs, CT 06269-4067, USA

Guillard, K., G. F. Griffin, et al. (1995). Nitrogen utilization of selected cropping systems in the U.S. northeast: II. Soil profile nitrate distribution an accumulation. Agronomy Journal 87(2): 199-207. {a} Dep. Plant Sci. U-67, Univ. Connecticut, 1376 Storrs Road, Storrs, CT 06269-4067, USA

Hall, M. H. (1995). Plant Vigor and Yield of Perennial Cool-Season Forage Crops When Summer Planting Is Delayed. Journal of Production Agriculture 8(2): 233-238. Dep. Agronomy, Pennsylvania State Univ., University Park, PA 16802, USA

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

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

Jablonski, W. and M. Widera (1995). The floristic changes in the second year after sowing of different grasses and clovers on excluded from intensive agriculture production field. Acta Agrobotanica 48(1): 25-31. {a} Rolniczy Zaklad Doswiadczalny IUNG Jelcz-Laskowice, Parkowa 3, 55-230 Jelcz-Laskowice, Poland

Jones, B. A., R. D. Hatfield, et al. (1995). Characterization of proteolysis in alfalfa and red clover. Crop Science 35(2): 537-541. {a} U.S. Dairy Forage Res. Cent., 1925 Linden Drive West, Madison, WI 53706, USA

Jones, B. A., R. D. Hatfield, et al. (1995). Screening legume forages for soluble phenols, polyphenol oxidase and extract browning. Journal of the Science of Food and Agriculture 67(1): 109-112. {a} US Dairy Forage Research Center, USDA, Agric. Research Serv., 1925 Linden Drive, West Madison, WI 53706, USA

Jones, B. A., R. E. Muck, et al. (1995). Red clover extracts inhibit legume proteolysis. Journal of the Science of Food and Agriculture 67(3): 329-333. {a} US Dairy Forage Res. Cent., USDA, Agric. Res. Serv., 1925 Linden Dr. West, Madison, WI 53706, USA

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

Karlsson, G. P., G. Sellden, et al. (1995). Clover as an indicator plant for phytotoxic ozone concentrations: Visible injury in relation to species, leaf age and exposure dynamics. New Phytologist 129(2): 355-365. {a} Swedish Environ. Res. Inst., Box 47086, S-402 58 Goteborg, Sweden

Kazimierski, T. and E. M. Kazimierska (1995). Cytogenetics, embryology and fertility of red clover (Trifolium pratense L.) with short flowers and anthocyanin spots on the leaves. Journal of Applied Genetics 36(4): 353-362. {a} Inst. Plant Genet., Polish Acad. Sci., Strzeszynska 34, 60-479 Poznan, Poland

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

Kongkiatngam, P., M. J. Waterway, et al. (1995). Genetic variation within and between two cultivars of red clover (Trifolium pratense L.): Comparisons of morphological, isozyme, and RAPD markers. Euphytica 84(3): 237-246. Plant Sci. Dep., MacDonald Campus McGill University, 21111 Lakeshore, Ste-Anne-de-Bellevue, PQ H9X 3V9, Canada

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

McKenney, D. J., S. W. Wang, et al. (1995). Denitrification, immobilization, and mineralization in nitrate limited and nonlimited residue-amended soil. Soil Science Society of America Journal 59(1): 118-124. {a} Dep. Chem. and Biochem., Univ. Windsor, Windsor, ON N9B 3P4, Canada

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

Miller, M. and R. P. Dick (1995). Thermal stability and activities of soil enzymes as influenced by crop rotations. Soil Biology and Biochemistry 27(9): 1161-1166. {a} Dep. of Crop and Soil Science, Agriculture and Life Sciences Building, Room 3067, Oregon State Univ., Corvallis, OR 97331-7306, USA

Morita, O., K. Iwabuchi, et al. (1995). Taproot tip penetration and young seeding growth in relation to root-hair adhesion among surface-sown legume species. Nippon Sochi Gakkai Shi 40(4): 437-442. Fac. Bioresources, Mie Univ., Tsu, Mie 514, Japan

Morita, O., K. Iwabuchi, et al. (1995). Effect of adhesion of taproot hairs to soil surface on germinating behaviors in surface-Sown legume species. Nippon Sochi Gakkai Shi 40(4): 429-436. Fac. Bioresources, Mie Univ., Tsu, Mie 514, Japan

Murphy, S. D. and L. W. Aarssen (1995). In vitro allelopathic effects of pollen from three Hieracium species (Asteraceae) and pollen transfer to sympatric Fabaceae. American Journal of Botany 82(1): 37-45. {a} Dep. Biol., Queen's Univ., Kingston, ON K7L 3N6, Canada

Novy, E. M., M. D. Casler, et al. (1995). Selection for persistence of tetraploid ryegrasses and festulolium in mixture with perennial legumes. Crop Science 35(4): 1046-1051. {a} Dep. Agron., Univ. Wis.-Madison, Madison, WI 53706-1597, USA

Opitz, V. B. W. and B. Biskupek (1995). The influence of interspecific competition in a grass-clover mixture on nutritional value. Journal of Agronomy and Crop Science 175(5): 355-364. {a} Ludwigstrasse 23, D-35390 Giessen, Germany

Panciera, M. T. and S. D. Sparrow (1995). Effects of nitrogen fertilizer on dry matter and nitrogen yields of herbaceous legumes in interior Alaska. Canadian Journal of Plant Science 75(1): 129-134. Agric. Forestry Exp. Stn., Univ. Alaska Fairbanks, 533 E. Fireweed, Palmer, AK 99775, USA

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

Saloniemi, H., K. Wahala, et al. (1995). Phytoestrogen content and estrogenic effect of legume fodder. Proceedings of the Society for Experimental Biology and Medicine 208(1): 13-17. {a} Coll. Veterinary Med., Dep. Basic Veterinary Med., Section Animal Hygiene, Box 6, FIN-00581 Helsinki, Finland

Sawai, A., H. Yamaguchi, et al. (1995). Fertility and morphology of the chromosome-doubled hybrid Trifolium medium X T. pratense (red clover) and backcross progeny. Grassland Science 41(2): 122-127. {a} Osumi Branch, Kagoshima Agric. Exp. Stn., Kushira, Kagoshima 893-16, Japan

Semerikov, V. L. and A. Y. Belyaev (1995). Allozyme polymorphism in natural populations and cultivars of red clover Trifolium pratense L. Genetika 31(6): 815-819. Inst. Plant Anim. Ecol., Ural Div., Russ. Acad. Sci., Ekaterinburg 620219, Russia

Semiadi, G., T. N. Barry, et al. (1995). Dietary preferences of sambar (Cervus unicolor) and red deer (Cervus elaphus) offered browse, forage legume and grass species. Journal of Agricultural Science 125(1): 99-107. {a} Dep. Anim. Sci., Massey Univ., Palmerston North, New Zealand

Skorupska, A., U. Bialek, et al. (1995). Two types of nodules induced on Trifolium pratense by mutants of Rhizobium leguminosarum bv. trifolii deficient in exopolysaccharide production. Journal of Plant Physiology 147(1): 93-100. {a} Dep. Gen. Microbiol., Maria Curie-Sklodowska Univ., Akademicka 19, 20-033 Lublin, Poland

Skorupska, A. and J. Krol (1995). Nodulation response of exopolysaccharide deficient mutants of Rhizobium leguminosarum bv. trifolii to addition of acidic exopolysaccharide. Microbiological Research 150(3): 297-303. {a} Dep. Gen. Microbiol., Maria Curie-Sklodowska Univ., Akademicka 19, PL-20-033 Lublin, Poland

Smith, R. R. and K. H. Quesenberry (1995). Registration of NEWRC Red Clover Germplasm. Crop Science 35(1): 295. {a} USDA-ARS, U.S. Dairy Forage Res. Cent., 1925 Linden Dr., Madison, WI 53706, USA

Sparrow, S. D., V. L. Cochran, et al. (1995). Residual effects of harvested and green-manured legumes on a subsequent barley crop in a subarctic environment. Canadian Journal of Plant Science 75(2): 453-456. {a} Agric. Forestry Experiment Station, Univ. Alaska Fairbanks, Fairbanks, AK 99775-7200, USA

Sparrow, S. D., V. L. Cochran, et al. (1995). Dinitrogen fixation by seven legume crops in Alaska. Agronomy Journal 87(1): 34-41. {a} Plant Anim. Soil Sci. Dep., Sch. Agric. Land Resources Manage., Univ. Alaska-Fairbanks, Fairbanks, AK 99775, USA

Steiner, J. J., J. A. Leffel, et al. (1995). Red clover seed production: III. Effect of forage removal time under varied environments. Crop Science 35(6): 1667-1675. {a} Natl. Forage Seed Production Res. Cent., USDA-ARS, 3450 SW Campus Way, Corvallis, OR 97331, USA

Strzyzewska, C. (1995). Amphidiploid hybrids of Trifolium pratense L. (2n equals 14+2) with T. diffusum Ehrh. (2n equals 16). Journal of Applied Genetics 36(2): 147-154. Inst. Plant Genetics, Polish Acad. Sci., Strzeszynska 34, 60-479 Poznan, Poland

Strzyzewska, C. (1995). Hybrids of Trifolium pratense L. (2n equals 14 plus 2) with T. diffusum Ehrh. (2n equals 16) and other 16-chromosome Trifolium species. Journal of Applied Genetics 36(1): 35-42. Inst. Plant Genetics, Polish Academy Sci., Strzeszynska 34, 60-479 Poznan, Poland

Sturz, A. V. and B. R. Christie (1995). Endophytic bacterial systems governing red clover growth and development. Annals of Applied Biology 126(2): 285-290. {a} Prince Edward Island Dep. Agriculture Fisheries Forestry, P.O. Box 1600, Charlottetown, PE C1A 7N3, Canada

Stute, J. K. and J. L. Posner (1995). Synchrony between legume nitrogen release and corn demand in the upper midwest. Agronomy Journal 87(6): 1063-1069. {a} W3736 Little Prairie Rd., East Troy, WI 53120, USA

Stute, J. K. and J. L. Posner (1995). Legume cover crops as a nitrogen source for corn in an oat-corn rotation. Journal of Production Agriculture 8(3): 385-390. {a} W3736 Little Prairie Rd., East Troy, WI 53120, USA

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

Sweeney, D. W. and J. L. Moyer (1995). Legume and tillage effects on prairie soil nitrogen and penetration resistance. Communications in Soil Science and Plant Analysis 26(1-2): 155-168. Kans. State Univ., Southeast Agric. Res. Cent., P.O. Box 316, Parsons, KS 67357, USA

Takeuchi, Y., Y. Omigawa, et al. (1995). Effects of brassinosteroids on conditioning and germination of clover broomrape (Orobanche minor) seeds. Plant Growth Regulation 16(2): 153-160. {a} Weed Sci. Cent., Utsunomiya Univ., Utsunomiya 321, Japan

Taylor, N. L. (1995). Registration of three genetic marker stocks for red clover: TP-RC, TP-LS and TP-MC. Crop Science 35(4): 1241. Dep. Agron., Univ. Ky., Lexington, KY 40546-0091, USA

Taylor, N. L. and S. A. Ghabrial (1995). Registration of 19-L38-1472, a powdery mildew and virus resistant red clover germplasm. Crop Science 35(6): 1721. {a} Dep. Agron. Plant Pathol., Univ. Kentucky, Lexington, KY 40546-0091, USA

Van, H. J. M. and P. R. Botha (1995). An evaluation of dryland legume and legume-grass pastures based on lucerne and red clover, with sheep, using a put-and-take system in the Outeniqua area of the southern Cape. African Journal of Range and Forage Science 12(1): 1-6. {a} Elsenburg Agric. Development Inst., Dep. Agric., Private Bag X1, Elsenburg 7607, South Africa

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

Venuto, B. C., R. R. Smith, et al. (1995). Virulence, legume host specificity, and genetic relatedness of isolates of Fusarium oxysporum from red clover. Plant Disease 79(4): 406-410. {a} La. State Univ. Agric. Cent., Dep. Agron., Baton Rouge, LA 70803-7511, USA

Vestberg, M. (1995). Occurrence of some Glomales in Finland. Mycorrhiza 5(5): 329-336. Agricultural Res. Centre of Finland, Laukaa Res. and Elite Plant Unit, FIN-41330 Vihtavuori, Finland

Von, B. W. O. and E. Jucken (1995). Influence of interspecific competition on ensilability and silage quality of grassclover mixtures. Wirtschaftseigene Futter 41(2): 163-171. Inst. Pflanzenbau Pflanzenzuechtung II, Gruenlandwirtschaft Futterbau, Justus-Liebig-Univ. Giessen, Ludwigstr. 23, 35390 Giessen, Germany

Xie, C. and J. A. Mosjidis (1995). Seedling-selection effects on morphological traits of mature plants in red clover. Theoretical and Applied Genetics 91(6-7): 1032-1036. Dep. Agron. Soils, Ala. Agric. Station, Auburn Univ., Auburn, AL 36849-5412, USA

Zajac, T., J. Bieniek, et al. (1995). Morphological features of young red clover (Trifolium pratense L.) plants depending on habitat cultivation (agrotechnic) factors. Acta Agrobotanica 48(2): 5-16. {a} Zakl. Szczegolowej Uprawy Roslin, Akad. Rolnicza, Al. Mickiewicza 21, 31-120 Krakow, Poland

Babaskin, V. S., V. S. Dobryanskii, et al. (1994). Antihypertensive effects of flavonoid amount of clover (Trifolium L.). Farmatsiya Moscow 43(6): 54-55. I.M. Sechenov Mosc. Med. Acad., Moscow, Russia

Bagegni, A. M., H. D. Kerr, et al. (1994). Herbicides with Crop Competition Replace Endophytic Tall Fescue (Festuca arundinacea). Weed Technology 8(4): 689-695. Agron. Dep., Univ. Missouri, Columbia, MO 65211, USA

Belzile, L. (1994). Potential yield of red clover seed in the seeding year. Canadian Journal of Plant Science 74(4): 807-809. Ferme Experimentale, Agriculture Agroalimentaire Canada, 1642 rue de la Ferme, La Pocatiere, PQ G0R 1Z0, Canada

Bentivenga, S. P. and J. B. Morton (1994). Stability and heritability of fatty acid methyl ester profiles of glomalean endomycorrhizal fungi. Mycological Research 98(12): 1419-1426. {a} Div. Plant Soil Sci., 401 Brooks Hall, P.O. Box 6057, West Virginia Univ., Morgantown, WV 26506-6057, USA

Boller, B. C. and J. Nosberger (1994). Differences in nitrogen fixation among field-grown red clover strains at different levels of 15N fertilization. Euphytica 78(3): 167-174. {a} Eidgenossische Forschungsanstalt Landwirtschaftlichen Pflanzenbau, FAP Reckenholz, CH-8046 Zurich, Switzerland

Borresen, T. and A. Njos (1994). The effect of ploughing depth and seedbed preparation on crop yields, weed infestation and soil properties from 1940 to 1990 on a loam soil in south eastern Norway. Soil and Tillage Research 32(1): 21-39. {a} Dep. Soil and Water Sci., Agric. Univ. Norway, P.O. Box 5028, N-1432 As, Norway

Breland, T. A. (1994). Measured and predicted mineralization of clover green manure at low temperatures at different depths in two soils. Plant and Soil 166(1): 13-20. Agric. Univ. Norway, Dep. Biotechnol. Sci., P.O. Box 5040, N-1432 As, Norway

Breland, T. A. (1994). Enhanced mineralization and denitrification as a result of heterogeneous distribution of clover residues in soil. Plant and Soil 166(1): 1-12. Agric. Univ. Norway, Dep. Biotechnol. Sci., P.O. Box 5040, N-1432 As, Norway

Brink, G. E. and T. E. Fairbrother (1994). Cell wall composition of diverse clovers during primary spring growth. Crop Science 34(6): 1666-1671. {a} USDA-ARS, Crop Sci. Res. Lab., Forage Res. Unit, P.O. Box 5367, Mississippi State, MS 39762, USA

Choo, T. M. and B. R. Christie (1994). AC Kingston red clover. Canadian Journal of Plant Science 74(1): 149-150. Agric. Can., Res. Branch, Res. Stn., P.O. Box 1210, Charlottetown, Prince Edward Island C1A 7M8, Canada

Choo, T. M., B. R. Christie, et al. (1994). AC Charlie red clover. Canadian Journal of Plant Science 74(4): 825-826. {a} Agriculture Agri-Food Canada, Research Station, P.O. Box 1210, Charlottetown, PE C1A 7M8, Canada

Christensen, M. J., H. Koga, et al. (1994). Possible causes of poor persistence of red clover stands in Japan. Sochi Shikenjo Kenkyu Hokoku(49): 43-50. {a} AgRes. Grasslands, Private Bag 11008, Palmerston North, New Zealand

Costello, M. J. (1994). Broccoli growth, yield and level of aphid infestation in leguminous living mulches. Biological Agriculture and Horticulture 10(3): 207-222. Lab. Biological Control, University California at Berkeley, Kearney Agric. Cent., 9240 S. Riverbend Avenue, Parlier, CA 93648, USA

Culik, M. P. and J. E. Weaver (1994). Seasonal crawling activity of adult root-feeding insect pests (Coleoptera: Curculionidae; Scolytidae) of red clover. Environmental Entomology 23(1): 68-75. Div. Plant Soil Sci., West Va. Univ., P.O. Box 6108, Morgantown, WV 26506-6108, USA

Dou, Z., R. H. Fox, et al. (1994). Tillage effect on seasonal nitrogen availability in corn supplied with legume green manures. Plant and Soil 162(2): 203-210. Dep. Agronomy, Pennsylvania State Univ., PA 16802, USA

Dougherty, C. T. and F. W. Knapp (1994). Oviposition and development of face flies in dung from cattle on herbage and supplemented herbage diets. Veterinary Parasitology 55(1-2): 115-127. {a} Dep. Agron., Univ. Kentucky, Lexington, KY 40546-0091, USA

Ekbom, B. (1994). Arthropod predators of the pea aphid, Acyrthosiphon pisum Harr. (Hom., Aphididae) in peas (Pisum sativum L.), clover (Trifolium pratense L.) and alfalfa (Medicago sativa L.). Journal of Applied Entomology 117(5): 469-476. Swed. Univ. Agric. Sci., Dep. Plant For. Prot., Box 7044, S-750 07 Uppsala, Sweden

Ermolaev, A. M. and L. T. Shirshova (1994). Productivity and functioning of a perennial sown meadow of various management type. Pochvovedenie(12): 97-105. Inst. Soil Sci. Photosynth., Russ. Acad. Sci., Pushchino, Russia

Farnham, D. E. and J. R. George (1994). Harvest management effects on dinitrogen fixation and nitrogen transfer in red clover-orchardgrass mixtures. Journal of Production Agriculture 7(3): 360-364. {a} Dep. Agron., Iowa State Univ., Ames, IA 50011, USA

Franzleubbers, A. J., C. A. Francis, et al. (1994). Nitrogen fertilizer response potential of corn and sorghum in continuous and rotated crop sequences. Journal of Production Agriculture 7(2): 277-284. {a} Texas A and M Univ., College Station, TX 77843, USA

Frey, B., A. Vilarino, et al. (1994). Chitin and ergosterol content of extraradical and intraradical mycelium of the vesicular-arbuscular mycorrhizal fungus Glomus intraradices. Soil Biology and Biochemistry 26(6): 711-717. {a} Swiss Federal Inst. Forest Snow Landscape Res., Zurcher-strasse 111, CH-8903 Birmensdorf, Switzerland

Fuhrer, J., M. H. Shariat, et al. (1994). Effects of ozone on managed pasture: II. Yield, species composition, canopy structure, and forage quality. Environmental Pollution 86(3): 307-314. Swiss Federal Res. Stn. Agric. Chem., Environmentl Hygiene, CH-3097 Liebefeld-Bern, Switzerland

Gray, F. A., J. L. Williams, et al. (1994). Distribution in the western United States on alfalfa and cultivar reaction to mixed populations of Ditylenchus dipsaci and Aphelenchoides ritzemabosi. Journal of Nematology 26(4 Suppl.): 705-719. {a} Dep. Plant Soil Insect Sci., Univ. Wyoming, P.O. Box 3354, Laramie, WY 82071, USA

Gupta, U. C. and J. A. MacLeod (1994). Effect of various sources of selenium fertilization on the selenium concentration of feed crops. Canadian Journal of Soil Science 74(3): 285-290. Agric. Agri-Food Can., Res. Cent., P.O. Box 1210, Charlottetown, Prince Edward Island C1A 7M8, Canada

Hageseth, G. T. and C. W. Young (1994). The four-compartment thermodynamic energy-level diagram for isothermal seed germination. Journal of Thermal Biology 19(1): 1-11. Dep. Physics Astronomy, Univ. North Carolina, Greensboro, NC 27412, USA

Harris, G. H., O. B. Hesterman, et al. (1994). Fate of legume and fertilizer nitrogen-15 in a long-term cropping systems experiment. Agronomy Journal 86(5): 910-915. {a} Univ. Georgia, P.O. Box 1209, Tifton, GA 31793, USA

Hogh, J. H. and J. K. Schjoerring (1994). Measurement of biological dinitrogen fixation in grassland: Comparison of the enriched 15N dilution and the natural 15N abundance methods at different nitrogen application rates and defoliation frequencies. Plant and Soil 166(2): 153-163. Plant Nutr. Lab., Dep. Agric Sci., Royal Vet. Agric. Univ., Thorvaldsensvej 40, DK-1871 Copenhagen, Denmark

Hojito, M. (1994). Studies on grassland acidification caused by fertilizer application and its effects on grass growth. Report of Hokkaido Prefectural Agricultural Experiment Stations(83): 1-108. Hokkaido Konsen Agricultural, Experiment Station, Nakashibetu, Hokkaido 086-11, Japan

Johnston, H. W., M. J. Celetti, et al. (1994). Fungal pathogens and Pratylenchus penetrans associated with preceding crops of clovers, winter wheat, and annual ryegrass and their influence on succeeding potato crops on Prince Edward Island. American Potato Journal 71(12): 797-808. {a} Res. Stn., Agric. Can., P.O. Box 1210, Charlottetown, Prince Edward Island C1A 7M8, Canada

Jones, T. W. A. and A. M. Thomas (1994). Changes in gene products associated with flowering in red clover (Trifolium pratense L.). Journal of Experimental Botany 45(273): 517-519. {a} AFRC Inst. Grassland Environmental Research, Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK

Kendall, W. A., J. A. Shaffer, et al. (1994). Effect of temperature and water variables on the juvenile growth of lucerne and red clover. Grass and Forage Science 49(3): 264-269. {a} USDA-ARS, US Regional Pasture Res. Lab., University Park, PA 16802, USA

Kochetov, I. S., A. D. Prudnikov, et al. (1994). Formation and production of perennial grass stands depending on methods of soil management. Izvestiya Timiryazevskoi Sel'skokhozyaistvennoi Akademii(4): 29-42. Dep. Exp. Agric. Methods, K.A. Timiryazev Mosc. Agric. Acad., Moscow, Russia

Laverty, T. M. (1994). Costs to foraging bumble bees of switching plant species. Canadian Journal of Zoology 72(1): 43-47. Ecol. Evol. Group, Dep. Zool., Univ. Western Ont., London, ON N6A 5B7, Canada

Marum, P., R. R. Smith, et al. (1994). Development of procedures to identify red clover resistant to Sclerotinia trifoliorum. Euphytica 77(3): 257-261. {a} Loken Res. Stn., N-2940 Heggenes, Norway

Mazin, V. V., S. I. Ivashuta, et al. (1994). System of uncoupled dominant centers for genetic transformation of alfalfa and clover. Fiziologiya Rastenii Moscow 41(6): 868-872. {a} Div. Biotechnol. Cell. Sel., All-Russ. Res. Inst. Fodder, p/o Lugovaya, 141740 Moscow Obl., Russia

McCully, M. E. (1994). Accumulation of high levels of potassium in the developing xylem elements in roots of soybean and some other dicotyledons. Protoplasma 183(1-4): 116-125. Dep. Biol., Carleton Univ., 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada

McDonald, M. B., L. J. Elliot, et al. (1994). DNA extraction from dry seeds for RAPD analyses in varietal identification studies. Seed Science and Technology 22(1): 171-176. Dep. Agron., The Ohio State Univ., Columbus, OH 43210, USA

Miller, M. H., E. G. Beauchamp, et al. (1994). Leaching of nitrogen and phosphorus from the biomass of three cover crop species. Journal of Environmental Quality 23(2): 267-272. {a} Dep. Land Res. Sci., Univ. Guelph, Guelph, ON N1G 2W1, Canada

Mortensen, K. and R. M. D. Makowski (1994). Rejection of a Colletotrichum trifolii isolate from red clover for biological control of black medick on the basis of pathogenicity to cultivated clovers. Biological Control 4(4): 366-372. Agric. Canada, Research Station, Box 440, 5000 Wascana Parkway, Regina, SK S4P 3A2, Canada

Mortensen, L. M. (1994). Further studies on the effects of ozone concentration on growth of subalpine plant species. Norwegian Journal of Agricultural Sciences 8(1): 91-97. Saerheim Res. Stn., N-4062 Klepp stasjon, Norway

Narasimhalu, P. and H. T. Kunelius (1994). Mineral composition of red clover treated with growth regulators in early spring. Grass and Forage Science 49(2): 146-151. {a} Charlottestown Res. Stn., Box 1210, Charlottetown C1A 7M8, Canada

Narasimhalu, P. and H. T. Kunelius (1994). Yield and composition of red clover treated with growth regulators in early spring. Grass and Forage Science 49(2): 138-145. {a} Charlottetown Res. Stn., Agric. Can., Box 1210, Charlottetown, Prince Edward Island C1A 7M8, Canada

Narasimhalu, P. and J. B. Sanderson (1994). Composition and utilization in sheep of unwilted and wilted silages prepared from seeding year red clover (Trifolium pratense L.) cut at two maturity stages. Canadian Journal of Plant Science 74(1): 87-92. Agric. Can., Res. Branch, Charlottetown Res. Stn., Box 1210, Charlottetown, Prince Edward Island C1A 7M8, Canada

Nebel, B. and J. Fuhrer (1994). Inter-and intraspecific differences in ozone sensitivity in semi-natural plant communities. Angewandte Botanik 68(3-4): 116-121. Forschungsanstalt Agrikulturchemie Umwelthygiene, Schwarzenburgstrasse 155, CH-3097 Liebefeld-Bern, Switzerland

Nesheim, L. and J. Oyen (1994). Nitrogen fixation by red clover (Trifolium pratense L.) grown in mixtures with Timothy (Phleum pratense L.) at different levels of nitrogen fertilization. Acta Agriculturae Scandinavica Section B Soil and Plant Science 44(1): 28-34. {a} Vagones Res. Station, N-8010 Bodo, Norway

Nielsen, O. F. (1994). Polyommatus icarus (common blue) - egg laying on Trifolium arvense (hare's foot trefoil) (Lepidoptera, Lycaenidae). Flora og Fauna 100(2): 77-79. Sokildevej 87, 8680 Ry., Denmark

Novichkova, N. S., A. K. Romanova, et al. (1994). Effect of illumination and nitrogen nutrition on photosynthesis and nitrogen fixation in red clover. Fiziologiya Rastenii Moscow 41(3): 344-349. {a} Inst. Soil Sci. Photosynth., Russ. Acad. Sci., 142292 Pushchino, Russia

Oliva, R. N., J. J. Steiner, et al. (1994). Red clover seed production: I. Crop water requirements and irrigation timing. Crop Science 34(1): 178-184. {a} Inst. Nac. Technologia Agropecuaria, CC 8, 5507 Lujan de Cuyo, Mendoza, Argentina

Oliva, R. N., J. S. Steiner, et al. (1994). Red clover seed production: II. Plant water status on yield and yield components. Crop Science 34(1): 184-192. {a} Natl. Forage Seed Production Res. Center, USDA-ARS, 3450 SW Campus Way, Corvallis, OR 97331, USA

Opitz, V. B. W. J. J. (1994). Effects of rotational fallows ('set-aside land') on subsequent winter wheat. Journal of Agronomy and Crop Science 173(2): 125-134. Ludwigstrasse 23, D-35390 Giessen, Germany

Perfect, E. and B. D. Kay (1994). Influence of corn management on dry aggregate tensile strength: Weibull analysis. Soil and Tillage Research 32(2-3): 149-161. {a} Dep. Land Resource Sci., Univ. Guelph, Guelph, ON N1G 2W1, Canada

Pierce, F. J., M. C. Fortin, et al. (1994). Periodic plowing effects on soil properties in a no-till farming system. Soil Science Society of America Journal 58(6): 1782-1787. {a} Crop Soil Sci. Dep., Mich. State Univ., 564 PSSB, East Lansing, MI 48824, USA

Radionenko, M. A., O. A. Khvedynich, et al. (1994). Development of somatic embryos on the callus culture of red clover (Trifolium pratense L.). Tsitologiya i Genetika 28(5): 15-20. {a} Inst. Cel