Source: AGRICOLA database (1970-1996)

Abba, E. J. and A. Lovato (1999). Effect of seed storage temperature and relative humidity on maize (Zea mays L.) seed viability and vigour. Seed Science and Technology 27(1): 101-114. {a} Seed Research and Testing Laboratory (LaRAS), Department of Agronomy, University of Bologna, Via Filippo Re 6, I-40126, Bologna, Italy

Abdel, M. A. Y. and A. M. S. Abd (1999). Feed preference by Baladi goats. Applied Animal Behaviour Science. Sept. 65(1): 63-72. {a} Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt

Abedon, B. G., L. L. Darrah, et al. (1999). Developmental changes associated with divergent selection for rind penetrometer resistance in the MoSCSSS maize synthetic. Crop Science. Jan. Feb. 39(1): 108-114. {a} Dep. Agron., 1575 Linden Dr., Univ. Wisconsin-Madison, Madison, WI 53706, USA

Abedon, B. G. and W. F. Tracy (1999). Ear quality in three sweet corn populations selected for resistance to common rust. Journal of the American Society for Horticultural Science. Nov. 124(6): 641-643. {a} Department of Agronomy, University of Wisconsin-Madison, Madison, WI, 53706, USA

Abel, C. A. and R. L. Wilson (1999). Evaluation of 11 maize populations from Peru for mechanisms of resistance to leaf feeding by European corn borer. Journal of the Kansas Entomological Society. April 72(2): 149-159. {a} Southern Insect Management Research Unit, USDA, Agricultural Research Service, Stoneville, MS, 38776, USA

Abou, E. M. S., S. H. Michail, et al. (1999). Effect of late wilt disease of maize incited by Cephalosporium maydis on lipid and fatty acid contents of maize grains. Acta Phytopathologica et Entomologica Hungarica 34(1-2): 43-49. {a} Department of Plant Pathology, Faculty of Agriculture Alexandria University, El-Shatby, Alexandria, Egypt

Adam, M. S. (1999). The promotive effect of the cyanobacterium Nostoc muscorum on the growth of some crop plants. Acta Microbiologica Polonica 48(2): 163-171. {a} Botany Department, Faculty of Science, Assiut University, Assiut, Egypt

Adams, K. R., D. A. Muenchrath, et al. (1999). Moisture effects on the morphology of ears, cobs and kernels of a South-western U.S. maize (Zea mays L.) cultivar, and implications for the interpretation of archaeological maize. Journal of Archaeological Science. May 26(5): 483-496. {a} Crow Canyon Archaeological Center, 23390 County Rd. K., Cortez, CO, 81321, USA

Adejuyigbe, C. O., G. Tian, et al. (1999). Soil microarthropod populations under natural and planted fallows in southwestern Nigeria. Agroforestry Systems 47(1-3): 263-272. {a} International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria

Adelaide, l. M., B. F. Van, et al. (1999). Tolerance to low temperature and paraquat-mediated oxidative stress in two maize genotypes. Journal of Experimental Botany 50(333): 523-532. {a} Istituto di Biochimica ed Ecofisiologia Vegetali (IBEV), CNR, Via Salaria km 29.3, 00016, Monterotondo Scalo, Rome, Italy

Agrama, H. A., M. E. Moussa, et al. (1999). Mapping of QTL for downy mildew resistance in maize. Theoretical and Applied Genetics. Aug. 99(3-4): 519-523. {a} Kansas State University, 2004 Throckmorton, Manhattan, KS, 665066-5501, USA

Agrama, H. A. S., A. G. Zakaria, et al. (1999). Identification of quantitative trait loci for nitrogen use efficiency in maize. Molecular Breeding 5(2): 187-195. {a} Kansas State University, 2004 Throckmorton, Manhattan, KS, 66506-5501, USA

Aguilera, C., C. M. Stirling, et al. (1999). Genotypic variation within Zea mays for susceptibility to and rate of recovery from chill-induced photoinhibition of photosynthesis. Physiologia Plantarum. Aug. 106(4): 429-436. {a} School of Agricultural and Forest Sciences, University of Wales, Bangor, Gwynedd, LL57 2UW, UK

Agus, F., D. P. Garrity, et al. (1999). Soil fertility in contour hedgerow systems on sloping oxisols in Mindanao, Philippines. Soil and Tillage Research. March 50(2): 159-167. {a} Southeast Asian Regional Research Program, International Center for Research in Agroforestry, Bogor, 16001, Indonesia

Akbar, F., A. Wahid, et al. (1999). Optimization of method and time of nitrogen application for increased nitrogen use efficiency and yield in maize. Pakistan Journal of Botany. [print] December 31(2): 337-341. {a} Department of Agronomy, University of Agriculture, Faisalabad, 38040, Pakistan

Akintoye, H. A., J. G. Kling, et al. (1999). N-use efficiency of single, double and synthetic maize lines grown at four N levels in three ecological zones of West Africa. Field Crops Research 60(3): 189-199. {a} Maize Improvement Program, International Institute of Tropical Agriculture, Oyo Road, Ibadan, Nigeria

Albrecht, H., J. I. Yoder, et al. (1999). Flavonoids promote haustoria formation in the root parasite Triphysaria versicolor. Plant Physiology Rockville. Feb. 119(2): 585-591. {a} Department of Vegetable Crops, University of California, Davis, CA, 95616-8746, USA

Alexandrov, V. (1999). Vulnerability and adaptation of agronomic systems in Bulgaria. Climate Research. Aug. 12(2-3): 161-173. {a} National Institute of Meteorology and Hydrology, Bulgarian Academy of Sciences, BG-1784, Sofia, Bulgaria

Ali, M. A., A. K. M. A. Prodhan, et al. (1999). Effect of water stress on the anatomical characters of root and stem of maize plant. Indian Journal of Agricultural Research. Dec. 33(4): 245-253. {a} Department of Crop Botany, Bangladesh Agricultural University, Mymensingh, Bangladesh

Ali, M. A., A. K. M. G. Sarwar, et al. (1999). Effect of water stresses on the growth features of different maize (Zea mays L.) cultivars. Pakistan Journal of Botany. [print] December 31(2): 455-460. {a} Department of Crop Botany, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh

Alicchio, R. (1999). rbcS cDNAs from Avena sterilis subsp. ludoviciana, A. agadiriana, A. strigosa, A. clauda. Plant Molecular Biology. Feb. 39(3): 639. {a} Department of Biology, University of Bologna, Via Selmi 3, 40126, Bologna, Italy

Aljanabi, S. M., R. Shibli, et al. (1999). Insertion of the maize transposable element Ac into soybean (Glycine max L. Merr.) by Agrobacterium mediated transformation method. Dirasat Agricultural Sciences. May 26(2): 226-239. {a} Biotechnology Department, Mauritius Sugar Industry Research Institute, Reduit, Mauritius

Alvarez, R., M. Alconada, et al. (1999). Sewage sludge effects on carbon dioxide-carbon production from a desurfaced soil. Communications in Soil Science and Plant Analysis. July 30(13-14): 1861-1866. {a} Departamento de Suelos, Facultad de Agronomia, Universidad de Buenos Aires, Av. San Martin 4453, 1417, Buenos Aires, Argentina

Ames, R. A. and B. L. Hoyle (1999). Biodegradation and mineralization of atrazine in shallow subsurface sediments from Illinois. Journal of Environmental Quality. Sept. Oct. 28(5): 1674-1681. {a} Dep. of Geological and Atmospheric Sciences, Iowa State Univ., 253 Science I, Ames, IA, 50011, USA

Amrani, M., D. G. Westfall, et al. (1999). Evaluation of residual and cumulative phosphorus effects in contrasted Moroccan calcareous soils. Nutrient Cycling in Agroecosystems. Nov. 55(3): 231-238. {a} Institut National de la Recherche Agronomique (INRA), Settat, Morocco

Amrani, M., D. G. Westfall, et al. (1999). Influence of water solubility of granular zinc fertilizers on plant uptake and growth. Journal of Plant Nutrition. Dec. 22(12): 1815-1827. {a} Food and Rural Development, Agronomy Unit, Alberta Agriculture, 6903-116 Street, Edmonton, AB, T6H 4P2, Canada

Anderson, R. L. (1999). Cultural strategies reduce weed densities in summer annual crops. Weed Technology. April June 13(2): 314-319. {a} Central Great Plains Research Station, Akron, CO, 80720, USA

Anderson, R. L., R. A. Bowman, et al. (1999). Alternative crop rotations for the central Great Plains. Journal of Production Agriculture. Jan. March 12(1): 95-99. {a} USDA-ARS Central Great Plains Res. Stn., Akron, CO, 80720, USA

Andrade, F. H., C. Vega, et al. (1999). Kernel number determination in maize. Crop Science 39(2): 453-459. {a} Facultad de Ciencias Agrarias UNMP. CC276, Unidad Integrada INTA Balcarce, 7620, Balcarce, Buenos Aires, Argentina

Andriulo, A., J. Guerif, et al. (1999). Evolution of soil carbon with various cropping sequences on the rolling pampas. Determination of carbon origin using variations in natural 13C abundance. Agronomie Paris. June July 19(5): 349-364. {a} Estacion Experimental de Pergamino, INTA, Pergamino, Argentina

Andriulo, A., B. Mary, et al. (1999). Modelling soil carbon dynamics with various cropping sequences on the rolling pampas. Agronomie Paris. June July 19(5): 365-377. {a} Estacion Experimental de Pergamino, INTA, Pergamino, Argentina

Aoki, N., T. Hirose, et al. (1999). Molecular cloning and expression analysis of a gene for a sucrose transporter in maize (Zea mays L.). Plant and Cell Physiology. Oct. 40(10): 1072-1078. {a} Japan International Research Center for Agricultural Sciences, Tsukuba, Ibaraki, 305-8686, Japan

Arachchi, D. H. M., R. E. L. Naylor, et al. (1999). A thermal time analysis of ageing of maize (Zea mays L.) seed can account for reduced germination in hot moist soil. Field Crops Research. Sept. 63(2): 159-167. {a} Department of Agriculture, University of Aberdeen, MacRobert Building, Aberdeen, AB24 5UA, UK

Ashraf, M. and u. R. Habib (1999). Interactive effects of nitrate and long-term waterlogging on growth, water relations, and gaseous exchange properties of maize (Zea mays L.). Plant Science Shannon. June 144(1): 35-43. {a} ABC Road, 51-C Sheikh Colony, Faisalabad, Pakistan

Ashraf, M. and H. Rehman (1999). Mineral nutrient status of corn in relation to nitrate and long-term waterlogging. Journal of Plant Nutrition. Aug. 22(8): 1253-1268. {a} Institute of Pure and Applied Biology, Bahauddin Zakariya University, Multan, Pakistan

Aslam, T., M. A. Choudhary, et al. (1999). Tillage impacts on soil microbial biomass C, N and P, earthworms and agronomy after two years of cropping following permanent pasture in New Zealand. Soil and Tillage Research. July 51(1-2): 103-111. {a} Institute of Technology and Engineering, Massey University, Palmerston North, New Zealand

Auger, D. L. and W. F. Sheridan (1999). Maize stocks modified to enhance the recovery of Ac-induced mutations. Journal of Heredity. July Aug 90(4): 453-459. {a} Division of Biological Sciences, University of Missouri, Columbia, MO, 65211-7400, USA

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

Aziz, O., A. Inam, et al. (1999). Utilization of petrochemical industry waste water for agriculture. Water Air and Soil Pollution. Oct. 115(1-4): 321-335. {a} Department of Botany, Aligarh Muslim University, Aligarh, U.P., 202002, India

Backman, P. A., P. J. Landschoot, et al. (1999). Variation in pathogenicity, morphology, and RAPD marker profiles in Colletotrichum graminicola from turfgrasses. Crop Science. July Aug 39(4): 1129-1135. {a} Dep. of Agronomy, Pennsylvania State Univ., University Park, PA, 16802, USA

Bagnaresi, P., S. Thoiron, et al. (1999). Cloning and characterization of a maize cytochrome-b5 reductase with Fe3+-chelate reduction capability. Biochemical Journal 338(2): 499-505. {a} Biochimie et Physiologie Moleculaire des Plantes, Centre National de la Recherche Scientifique (Unite de Recherche 2133), Institut National de la Recherche Agronomique et Ecole Nationale Superieure d'Agronomie, F-34060, Montpellier cedex 1, France

Ball, C. B. R. and R. C. Roy (1999). Enhanced ammonium sources to reduce nitrate leaching. Nutrient Cycling in Agroecosystems. May 54(1): 73-80. {a} Agriculture and Agri-Food Laboratory, Southern Crop Protection and Food Research Centre (Delhi Farm), Delhi, ON, N4B 2W9, Canada

Baluska, F., J. Samaj, et al. (1999). Proteins reacting with cadherin and catenin antibodies are present in maize showing tissue-, domain-, and development-specific associations with endoplasmic-reticulum membranes and actin microfilaments in root cells. Protoplasma 206(1-3): 174-187. {a} Botanisches Institut, Rheinische Friedrich-Wilhelms-Universitaet Bonn, Kirschallee 1, D-53115, Bonn, Germany

Banerjee, M. R., S. J. Chapman, et al. (1999). Uptake of fertilizer sulfur by maize from soils of low sulfur status as affected by vesicular-arbuscular mycorrhizae. Canadian Journal of Soil Science. Nov. 79(4): 557-559. {a} Semiarid Prairie Agricultural Research Centre, Agriculture and Agri-Food Canada, Swift Current, SK, S9H 3X2, Canada

Bansal, R. L., D. S. Chahal, et al. (1999). Effect of iron-manganese interaction on the yield and content of Fe and Mn in maize (Zea mays L.). Acta Agronomica Hungarica 47(1): 19-25. {a} Department of Soils, Punjab Agricultural University, Ludhiana, 141 004, India

Banuelos, G. S., H. A. Ajwa, et al. (1999). Germination responses and boron accumulation in germplasm from Chile and the United States grown with boron-enriched water. Ecotoxicology and Environmental Safety. May 43(1): 62-67. {a} Agricultural Research Service, Water Management Research Laboratory, U.S. Department of Agriculture, 2021 South Peach, Fresno, CA, 93727, USA

Banziger, M., G. O. Edmeades, et al. (1999). Selection for drought tolerance increases maize yields across a range of nitrogen levels. Crop Science. July Aug 39(4): 1035-1040. {a} Intl. Maize and Wheat Improvement Center (CIMMYT), 06600, Mexico, DF, Mexico

Bargar, B., J. B. Swan, et al. (1999). Soil water recharge under uncropped ridges and furrows. Soil Science Society of America Journal. Sept. Oct. 63(5): 1290-1299. {a} Dep. of Agronomy, Iowa State Univ., Ames, IA, 50011, USA

Barna, G., C. R. Edwards, et al. (1999). Study of behavioral change of western corn rootworm beetle by crop and sex in maize and soybean fields in northwestern Indiana, USA. Acta Phytopathologica et Entomologica Hungarica. [print] 34(4): 393-402. {a} Department of Plant Protection, Faculty of Agricultural Sciences, Godollo University of Agricultural Sciences, H-2103, Godollo, Hungary

Barnabas, B., B. Obert, et al. (1999). Colchicine, an efficient genome-doubling agent for maize (Zea mays L.) microspores cultured in anthero. Plant Cell Reports. June 18(10): 858-862. {a} Agricultural Research Institute of the Hungarian Academy of Sciences, Brunszvik u. 2, H-2462, Martonvasar, Hungary

Basheeruddin, M., M. B. Reddy, et al. (1999). Correlation coefficient and path analysis of component characters as influence by the environments if forage maize. Crop Research Hisar 17(1): 85-89. Coll. Agric., Rajendranagar, Hyderabad-500 030, India

Baskin, T. I., H. T. H. M. Meekes, et al. (1999). Regulation of growth anisotropy in well-watered and water-stressed maize roots. II. Role of cortical microtubules and cellulose microfibrils. Plant Physiology Rockville. Feb. 119(2): 681-692. {a} Division of Biological Sciences, University of Missouri, Columbia, MI, 65211, USA

Batygina, T. B. and O. N. Voronova (1999). Manifestation of apoptosis at early stages of ovule development in maize mutant mac1. Doklady Akademii Nauk. July 367(3): 426-429.

Bauder, T. A., K. A. Barbarick, et al. (1999). Drilling fluid effects on crop growth and iron and zinc availability. Journal of Environmental Quality. May June 28(3): 744-749. {a} Dep. of Soil and Crop Science, Colorado State Univ., Fort Collins, CO, 80523, USA

Beatty, M. K., A. Rahman, et al. (1999). Purification and molecular genetic characterization of ZPU1, a pullulanase-type starch-debranching enzyme from maize. Plant Physiology Rockville 119(1): 255-266. {a} Dep. Biochem. Biophys. Mol. Biol., Iowa State Univ., Ames, IA 50011, USA

Bedi, S. P. S. (1999). Influence of stage of maturity/cutting on the iodine status of maize (Zea mays), oat (Avena sativa) and berseem (Trifolium alexandrium). Indian Journal of Animal Sciences. June 69(6): 428-429. {a} Division of Animal Nutrition, Indian Veterinary Research Institute, Izatnagar, UP, 243 122, India

Beerwinkle, K. R., J. R. Coppedge, et al. (1999). A new mechanical method for sampling selected beneficial and pest insects on corn - The corn kiss. Southwestern Entomologist. June 24(2): 107-113. {a} ARS-SPA-SCRL Areawide Pest Management Research, USDA, College Station, TX, USA

Bengough, A. G. and J. M. Kirby (1999). Tribology of the root cap in maize (Zea mays) and peas (Pisum sativum). New Phytologist. June 142(3): 421-425. {a} Soil-Plant Dynamics Unit, Scottish Crop Research Institute, Dundee, DD2 5DA, UK

Berberich, T., H. Sano, et al. (1999). Involvement of a MAP kinase, ZmMPK5, in senescence and recovery from low-temperature stress in maize. Molecular and General Genetics. Oct. 262(3): 534-542. {a} Research and Education Center for Genetic Information, Nara Institute of Science and Technology, Ikoma, Nara, 630-0101, Japan

Bergstrom, G. C. and R. L. Nicholson (1999). The biology of corn anthracnose: Knowledge to exploit for improved management. Plant Disease. July 83(7): 596-608. {a} Department of Plant Pathology, Cornell University, Ithaca, NY, USA

Berke, T. G. and T. R. Rocheford (1999). Quantitative trait loci for tassel traits in maize. Crop Science. Sept. Oct. 39(5): 1439-1443. {a} Asian Vegetable Research and Development Center, Shanhua, Tainan, 741, Taiwan

Bernet, E., I. Claparols, et al. (1999). Changes in polyamine content, arginine and ornithine decarboxylases and transglutaminase activities during light/dark phases (of initial differentiation) in maize calluses and their chloroplasts. Plant Physiology and Biochemistry Paris. Dec. 37(12): 899-909. {a} Departament de Genetica Molecular, Institut de Biologia Molecular de Barcelona, C.I.D. (C.S.I.C.), Jordi Girona 18-26, 08034, Barcelona, Spain

Beuve, M., B. Naibo, et al. (1999). Irrigated hybrid maize crop yield losses due to barley yellow dwarf virus-PAV luteovirus. Crop Science. Nov. Dec. 39(6): 1830-1834. {a} Unite de Pathologie Vegetale, INRA, Route de Saint-Cyr, 78026, Versailles Cedex, France

Bezerra, N. E. and R. J. M. C. Nogueira (1999). Comparative study of the growth of tomato and maize plants under conditions of salinity. Brazilian Archives of Biology and Technology. [print] 42(4): 471-475. {a} Depto. de Quimica, UFRPE, 52171-030, Recife, PE, Brazil

Bhatti, M. H., L. A. Nelson, et al. (1999). Influence of planting dates and populations of seed yield and plant characteristics of sunflower in the high plains. Journal of Production Agriculture. Jan. March 12(1): 38-42. {a} Dep. of Agronomy, Univ. of Nebraska, Lincoln, NE, 68583-0915, USA

Bih, F. Y., S. S. H. Wu, et al. (1999). The predominant protein on the surface of maize pollen is an endoxylanase synthesized by a tapetum mRNA with a long 5' leader. Journal of Biological Chemistry. Aug. 274(32): 22884-22894. {a} Dept. of Botany and Plant Sciences, University of California, Riverside, CA, 92521-0124, USA

Bilgin, M., D. Dedeoglu, et al. (1999). Meristem, cell division and S phase-dependent activity of wheat histone H4 promoter in transgenic maize plants. Plant Science Shannon. May 143(1): 35-44. {a} Biological Research Centre H.A.S, Institute of Plant Biology, Temesvari krt. 62, Szeged, H-6726, Hungary

Billen, W. and P. Baufeld (1999). Diabrotica virgifera virgifera LeConte, 1868, the western corn rootworm (Coleoptera: Chrysomelidae), a new and dangerous pest of maize crops (Zea mays) in Europe. Mitteilungen der Entomologischen Gesellschaft Basel 49(1): 24-31. {a} Amt fuer Landwirtschaft, Pflanzengesundheitsdienst, Haagenerstrasse 49, D-79539, Loerrach, Germany

Binda, C., A. Coda, et al. (1999). A 30 ANG long U-shaped catalytic tunnel in the crystal structure of polyamine oxidase. Structure London 7(3): 265-276. {a} Dipartimento di Genetica e Microbiologia, Universita di Pavia, Via Abbiategrasso 207, I-27100, Pavia, Italy

Binder, B. F., J. C. Robbins, et al. (1999). Effects of Peruvian maize extracts on growth, development fecundity of the European corn borer. Journal of Chemical Ecology. June 25(6): 1281-1294. {a} Corn Insects and Crop Genetics Research Unit, Genetics Lab., USDA-ARS, Iowa State University, Insectary, Ames, IA, 50011, USA

Bingham, I. J. and G. J. Merritt (1999). Effects of seed ageing on early post-germination root extension in maize: A spatial and histological analysis of the growth-zone. Seed Science and Technology 27(1): 151-162. {a} Crop Health Dept, SAC, Craibstone Estate, Bucksburn, Ferguson Building, Aberdeen, AB21 9YA, UK

Bityutskii, N. P., S. V. Magnitskii, et al. (1999). Metal content in the various parts of maize kernels as related to maize root growth during germination. Fiziologiya Rastenii Moscow. May June 46(3): 495-499.

Bletsos, E. A. and C. K. Goulas (1999). Mass selection for improvement of grain yield and protein in a maize population. Crop Science. Sept. Oct. 39(5): 1302-1305. {a} School of Production Sciences, Faculty of Agriculture, Crop and Animal Production, Univ. of Thessaly, Pedion Areos, 38334, Volos, Greece

Bode, K., M. A. Hooks, et al. (1999). Identification, separation, and characterization of acyl-coenzyme a dehydrogenases involved in mitochondrial beta-oxidation in higher plants. Plant Physiology Rockville. April 119(4): 1305-1314. {a} Centre National de la Recherche Scientifique UMR 6553, Universite de Rennes I, Campus Scientifique de Beaulieu, Batiment 14, 263 Avenue du General Leclerc, 35042, Rennes cedex, France

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

Bohn, M., R. C. Kreps, et al. (1999). Damage and grain yield losses caused by European corn borer (Lepidoptera: Pyralidae) in early maturing European maize hybrids. Journal of Economic Entomology. June 92(3): 723-731. {a} Institute of Plant Breeding, Seed Science and Population Genetics, University of Hohenheim, D-70593, Stuttgart, Germany

Boisson, J., A. Ruttens, et al. (1999). Evaluation of hydroxyapatite as a metal immobilizing soil additive for the remediation of polluted soils: Part. 1. Influence of hydroxyapatite on metal exchangeability in soil, plant growth and plant metal accumulation. Environmental Pollution 104(2): 225-233. {a} INRA Bordeaux Aquitaine Res. Cent., Agronomy Unit, BP 81, F-33883 Villenave d'Ornon, France

Bolinder, M. A., D. A. Angers, et al. (1999). Estimating C inputs retained as soil organic matter from corn (Zea mays L.). Plant and Soil 215(1): 85-91. {a} Centre de recherche et de developpement sur les sols et les grandes cultures, Agriculture et Agroalimentaire Canada, 2560, Boulevard Hochelaga, Sainte-Foy, Quebec, G1V 2J3, Canada

Bonato, O., F. Schulthess, et al. (1999). Simulation model for maize crop growth based on acquisition and allocation processes for carbohydrate and nitrogen. Ecological Modelling. Dec. 124(1): 11-28. {a} CNPMA-EMBRAPA, Rodovia SP 340, Km127, 5, 13820-000, Jaguariuna, SP, Brazil

Bosque, P. N. A. and I. W. Buddenhagen (1999). Biology of Cicadulina leafhoppers and epidemiology of maize streak virus disease in West Africa. South African Journal of Plant and Soil. Feb. 16(1): 50-55. {a} Department of Plant, Soil and Entomological Sciences, University of Idaho, Moscow, ID, 83844-2339, USA

Bottomley, P. J., T. E. Sawyer, et al. (1999). Winter cover crop enhances 2,4-D mineralization potential of surface and subsurface soil. Soil Biology and Biochemistry. June 31(6): 849-857. {a} Department of Crop and Soil Sciences, Oregon State University, Corvallis, OR, 97331-3804, USA

Boucher, A., Y. Dalpe, et al. (1999). Effect of arbuscular mycorrhizal colonization of four species of Glomus on physiological responses of maize. Journal of Plant Nutrition. April May 22(4-5): 783-797. {a} Department of Biology, University of Ottawa, STN A, Ottawa, ON, K1N 6N5, Canada

Bouraoui, F., N. Turpin, et al. (1999). Trend analysis of nutrient concentrations and loads in surface water in an intensively fertilized watershed. Journal of Environmental Quality. Nov. Dec. 28(6): 1878-1885. {a} CEMAGREF, 17 Avenue de Cucille, CS 64427, 35044, Rennes Cedex, France

Boussama, N., O. Ouariti, et al. (1999). Cd-stress on nitrogen assimilation. Journal of Plant Physiology. Sept. 155(3): 310-317. {a} Laboratoire de Physiologie Vegetale "Nutrition et Metabolisme Azotes" (E 20/C 09), Departement des Sciences Biologiques, Faculte des Sciences de Tunis, Campus Universitaire, 1060, Tunis, Tunisia

Boutin, C., K. E. Freemark, et al. (1999). Farmland birds in southern Ontario: Field use, activity patterns and vulnerability to pesticide use. Agriculture Ecosystems and Environment 72(3): 239-254. {a} National Wildlife Research Centre, Canadian Wildlife Service, 100 Gamelin Blvd., Hull, PQ, K1A 0H3, Canada

Bragina, T. V., N. A. Rodionova, et al. (1999). Cellulase activity and formation of gas cavities in completely flooded maize adventitious roots. Fiziologiya Rastenii Moscow. Sept. Oct. 46(5): 772-776.

Braun, M., F. Baluska, et al. (1999). Redistribution of actin, profilin and phosphatidylinositol-4,5-bisphosphate in growing and maturing root hairs. Planta Berlin. Oct. 209(4): 435-443. {a} Zellbiologie der Pflanzen, Botanisches Institut, Universitaet Bonn, Venusbergweg 22, D-53115, Bonn, Germany

Brown, R. A. and N. J. Rosenberg (1999). Climate change impacts on the potential productivity of corn and winter wheat in their primary United States growing regions. Climatic Change 41(1): 73-107. Pacific Northwest Lab., 901 D Street St. SW, Washington, DC 20024, USA

Bruedern, A. and G. Thiel (1999). Effect of cell-wall-digesting enzymes on physiological state and competence of maize coleoptile cells. Protoplasma 209(3-4): 246-255. {a} Albrecht-von-Haller-Institut fuer Pflanzenwissenschaften, Universitaet Goettingen, Untere Karspuele 2, D-37073, Goettingen, Germany

Brunini, O., E. C. Machado, et al. (1999). CO2 flux measurements above two hybrid corn canopies. Revista Brasileira de Fisiologia Vegetal. Dec. 11(3): 161-168. {a} Centro de Ecofisiologia e Biofisica, Instituto Agronomico, Campinas, SP, 13001-970, Brazil

Buah, S. S. J., T. A. Polito, et al. (1999). No-tillage corn hybrids response to starter fertilizer. Journal of Production Agriculture. Oct. Dec. 12(4): 676-680. {a} Dep. of Agronomy, Iowa State Univ., Ames, IA, 50011, USA

Buckeridge, M. S., C. E. Vergara, et al. (1999). The mechanism of synthesis of a mixed-linkage (1fwdarw3), (1fwdarw4)beta-D-glucan in maize. Evidence for multiple sites of glucosyl transfer in the synthase complex. Plant Physiology Rockville. Aug. 120(4): 1105-1116. {a} Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN, 47907-1155, USA

Buckler, E. S. I. V., D. T. L. Phelps, et al. (1999). Meiotic drive of chromosomal knobs reshaped the maize genome. Genetics . Sept. 153(1): 415-426. {a} Department of Genetics, USDA-ARS, North Carolina State University, Raleigh, NC, USA

Buddenhagen, I. W. and P. N. A. Bosque (1999). Historical overview of breeding for durable resistance to maize streak virus for tropical Africa. South African Journal of Plant and Soil. May 16(2): 106-111. {a} Department of Plant, Soil and Entomological Sciences, University of Idaho, Moscow, ID, 83844-2339, USA

Budikova, S. (1999). Structural changes and aluminium distribution in maize root tissues. Biologia Plantarum Prague 42(2): 259-266. {a} Institute of Botany, Slovak Academy of Sciences, Dubravska cesta 14, 842 23, Bratislava, Slovakia

Buhler, D. D. (1999). Weed population responses to weed control practices. I. Seed bank, weed populations, and crop yields. Weed Science. July Aug 47(4): 416-422. {a} National Soil Tilth Laboratory, U.S. Department of Agriculture, Agricultural Research Service, Ames, IA, 50011, USA

Bukvic, G., T. Teklic, et al. (1999). The influence of the phosphorus and zinc fertilization on some morphological characteristics of maize inbred lines (Zea mays L.). Cereal Research Communications 27(3): 307-314. {a} Faculty of Agriculture, University of J.J. Strossmayer, Osijek Trg Sv. Trojstva 3, 31000, Osijek, Croatia

Bundy, L. G. and T. W. Andraski (1999). Site-specific factors affecting corn response to starter fertilizer. Journal of Production Agriculture. Oct. Dec. 12(4): 664-670. {a} Dep. of Soil Science, Univ. of Wisconsin, Madison, WI, 53706-1299, USA

Burgess, M. S., G. R. Mehuys, et al. (1999). Tillage and crop residue effects on soil nitrate under three years of corn (Zea mays L.) on land previously in corn and forage crops. Canadian Journal of Soil Science. Feb. 79(1): 217-220. {a} Department of Natural Resource Sciences, McGill University, Macdonald Campus, Ste-Anne-de-Bellevue, PQ, H9X 3V9, Canada

Burleigh, S. H. and M. J. Harrison (1999). The down-regulation of Mt4-like genes by phosphate fertilization occurs systemically and involves phosphate translocation to the shoots. Plant Physiology Rockville 119(1): 241-248. {a} Samuel Roberts Noble Foundation, Plant Biol. Div., 2510 Sam Noble Parkway, Ardmore, OK 73402, USA

Butron, A., R. A. Malvar, et al. (1999). Resistance of maize inbreds to pink stem borer. Crop Science. Jan. Feb. 39(1): 102-107. {a} Mision Biol. Galicia, Consejo Superior Investigaciones Cientificas, Apartado 28, 36080 Pontevedra, Spain

Butron, A., R. A. Malvar, et al. (1999). Combining abilities for maize stem antibiosis, yield loss, and yield under infestation and non infestation with pink stem borer. Crop Science. May June 39(3): 691-696. {a} Mision Biologica de Galicia, CSIC, 36080, Pontevedra, Spain

Buxton, D. R., I. C. Anderson, et al. (1999). Performance of sweet and forage sorghum grown continuously, double-cropped with winter rye, or in rotation with soybean and maize. Agronomy Journal. Jan. Feb. 91(1): 93-101. {a} USDA-ARS-NPS, 5601 Sunnyside Ave., Beltsville, MD, 20705-5139, USA

Buyer, J. S., D. P. Roberts, et al. (1999). Microbial community structure and function in the spermosphere as affected by soil and seed type. Canadian Journal of Microbiology. Feb. 45(2): 138-144. {a} Soil Microbial Systems Laboratory, Agricultural Research Service, United States Department of Agriculture, Building 001 BARC-West, Beltsville, MD, 20705-2350, USA

Cacharron, J., H. Saedler, et al. (1999). Expression of MADS box genes ZMM8 and ZMM14 during inflorescence development of Zea mays discriminates between the upper and the lower floret of each spikelet. Development Genes and Evolution. July 209(7): 411-420. {a} Abteilung Molekulare Pflanzengenetik, Max-Planck-Institut fuer Zuechtungsforschung, Carl-von-Linne-Weg 10, D-50829, Cologne, Germany

Cahoon, J. E., D. E. Eisenhauer, et al. (1999). Corn yield response to tillage with furrow irrigation. Journal of Production Agriculture. April June 12(2): 269-275. {a} Civil Eng. Dep., Montana State Univ., 220 Cobleigh Hall, Bozeman, MT, 59717, USA

Cai, Y. (1999). Identification and characterization of Enterococcus species isolated from forage crops and their influence on silage fermentation. Journal of Dairy Science. Nov. 82(11): 2466-2471. {a} National Grassland Research Institute, Nishinasuno, Tochigi, 329-2793, Japan

Calba, H., P. Cazevieille, et al. (1999). Modelling of the dynamics of Al and protons in the rhizosphere of maize cultivated in acid substrate. Plant and Soil 209(1): 57-69. {a} AMIS Programme Agronomie, Centre de Cooperation Internationale en Recherche Agronomique pour le Developpement, 2477 Avenue du Val de Montferrand, 34032, Montpellier cedex 1, France

Cambardella, C., T. B. Moorman, et al. (1999). Water quality in Walnut Creek watershed: Nitrate-nitrogen in soils, subsurface drainage water, and shallow groundwater. Journal of Environmental Quality 28(1): 25-34. {a} USDA-ARS, Natl. Soil Tilth Lab., 2150 Pammel Dr., Ames, IA 50011-4420, USA

Campbell, C. S. and K. J. McInnes (1999). Response of in situ leaf psychrometer to cuticle removal by abrasion. Agronomy Journal. Sept. Oct. 91(5): 859-862. {a} Dep. of Soil and Crop Science, Texas A and M University, College Station, TX, USA

Cancado, G. M. A., L. L. Loguercio, et al. (1999). Hematoxylin staining as a phenotypic index for aluminum tolerance selection in tropical maize (Zea mays L.). Theoretical and Applied Genetics. Sept. 99(5): 747-754. {a} Applied Biology Group-NBA, National Maize and Sorghum Research Center-CNPMS/EMBRAPA, Rod. MG 424, Km 65, Sete Lagoas, MG, 35701-970, Brazil

Cantarero, M. G., A. G. Cirilo, et al. (1999). Night temperature at silking affects kernel set in maize. Crop Science. May June 39(3): 703-710. {a} Estacion Experimental Agropecuaria Pergamino, Instituto Nacional de Tecnologia Agropecuaria (INTA), C.C. 31 (2700), Pergamino, Buenos Aires, Argentina

Cao, H., R. J. Imparl, et al. (1999). Identification of the soluble starch synthase activities of maize endosperm. Plant Physiology Rockville. May 120(1): 205-215. {a} Department of Biochemistry, Biophysics, and Molecular Biology, Iowa State University, Ames, IA, 50011, USA

Carceller, M., P. Prystupa, et al. (1999). Remobilization of proline and other nitrogen compounds from senescing leaves of maize under water stress. Journal of Agronomy and Crop Science. July 183(1): 61-66. {a} Facultad de Agronomia, IFEVA, Universidad de Buenos Aires, Av. San Martin 4453, 1417, Buenos Aires, Argentina

Cardon, G., S. Hohmann, et al. (1999). Molecular characterisation of the Arabidopsis SBP-box genes. Gene Amsterdam. Sept. 237(1): 91-104. {a} Department of Molecular Plant Genetics, Max-Planck-Institut fuer Zuechtungsforschung, Carl-von-Linne-Weg 10, 50829, Cologne, Germany

Carlini, L. E., M. Ketudat, et al. (1999). The maize EmBP-1 orthologue differentially regulates Opaque2-dependent gene expression in yeast and cultured maize endosperm cells. Plant Molecular Biology. Oct. 41(3): 339-349. {a} Department of Horticulture, 302 Wartik Lab, Pennsylvania State University, University Park, PA, USA

Carlson, S. J. and P. S. Chourey (1999). A re-evaluation of the relative roles of two invertases, INCW2 and IVR1, in developing maize kernels and other tissues. Plant Physiology Rockville. Nov. 121(3): 1025-1035. {a} Department of Plant Pathology, University of Florida, Gainesville, FL, USA

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

Carneiro, N. P., P. A. Hughes, et al. (1999). The eEF1A gene family is differentially expressed in maize endosperm. Plant Molecular Biology. Dec. 41(6): 801-813. {a} Department of Plant Sciences, University of Arizona, Forbes Hall, Room 303, Tucson, AZ, 85721, USA

Carrere, I., M. Tepfer, et al. (1999). Recombinants of cucumber mosaic virus (CMV): Determinants of host range and symptomatology. Archives of Virology 144(2): 365-379. {a} INRA, Station de Pathologie Vegetale, Domaine Saint Maurice, B.P. 94, F-84143 Montfavet Cedex, France

Cartea, M. E., R. A. Malvar, et al. (1999). Inheritance of antibiosis to Sesamia nonagrioides (Lepidoptera: Noctuidae) in maize. Journal of Economic Entomology. Aug. 92(4): 994-998. {a} Mision Biologica de Galicia, High Council for Scientific Research (CSIC), 36080, Pontevedra, Spain

Cartea, M. E., P. Revilla, et al. (1999). Do second cycle maize inbreds preserve the European flint heterotic group? Crop Science. July Aug 39(4): 1060-1064. {a} Mision Biologica de Galicia, CSIC, E-36080, Pontevedra, Spain

Casati, P., M. F. Drincovich, et al. (1999). Regulation of the expression of NADP-malic enzyme by UV-B, red and far-red light in maize seedlings. Brazilian Journal of Medical and Biological Research. Oct. 32(10): 1187-1193. {a} Centro de Estudios Fotosinteticos y Bioquimicos (CEFOBI), Universidad Nacional de Rosario, Suipacha, 531, 2000, Rosario, Argentina

Casey, F. X. M., D. B. Jaynes, et al. (1999). Comparing field methods that estimate mobile-immobile model parameters. Soil Science Society of America Journal. July Aug 63(4): 800-806. {a} Dep. of Agronomy, Iowa State Univ., Ames, IA, 50011, USA

Cassman, K. G. (1999). Ecological intensification of cereal production systems: Yield potential, soil quality, and precision agriculture. Proceedings of the National Academy of Sciences of the United States of America. May 96(11): 5952-5959. {a} Department of Agronomy, University of Nebraska, Lincoln, NB, 68583-0915, USA

Castiglioni, P., M. P. Ajmone, et al. (1999). AFLP markers in a molecular linkage map of maize: Codominant scoring and linkage group ditsribution. Theoretical and Applied Genetics. Aug. 99(3-4): 425-431. {a} Istituto Sperimentale per la Cerealicoltura, Via Stezzano 24, 24100, Bergamo, Italy

Cavero, J., C. Zaragoza, et al. (1999). Competition between maize and Datura stramonium in an irrigated field under semi-arid conditions. Weed Research. June 39(3): 225-240. {a} Dept Genetica y Produccion Vegetal, Estacion Experimental de Aula Dei (CSIC), Zaragoza, 50080, Spain

Cazetta, J. O., J. R. Seebauer, et al. (1999). Sucrose and nitrogen supplies regulate growth of maize kernels. Annals of Botany London. Dec. 84(6): 747-754. {a} Dep. of Crop Sciences, Univ. of Illinois, 1201 W. Gregory, Urbana, IL, 61801, USA

Chamberland, H., D. Spertini, et al. (1999). Identification of coiled bodies in Brassica napus nuclei during embryogenesis and early germination. Protoplasma 207(1-2): 106-113. {a} Universite Laval, Pavilion C.-E. Marchand, Sainte-Foy, PQ, G1K 7P4, Canada

Chantigny, M. H., D. A. Angers, et al. (1999). Dynamics of soluble organic C and C mineralization in cultivated soils with varying N fertilization. Soil Biology and Biochemistry 31(4): 543-550. {a} Centre de recherche et de developpement sur les sols et les grandes cultures, Agriculture et Agroalimentaire Canada, 2560 boul. Hochelaga, Ste-Foy, PQ, G1V 2J3, Canada

Chapman, S. C. and G. O. Edmeades (1999). Selection improves drought tolerance in tropical maize populations: II. Direct and correlated responses among secondary traits. Crop Science. Sept. Oct. 39(5): 1315-1324. {a} Pioneer Hi-Bred International, Inc., 7431 Kaumualii Highway, Kekaha, HI, 96752, USA

Chase, S. S. (1999). Li Jing Xiong (C.H. Li): Functioning in adversity. Crop Science. Jan. Feb. 39(1): 1-3. {a} P.O. Box 193, Chase Road, Shokan, NY 12481, USA

Chen, C. X., J. S. Sun, et al. (1999). RFLP variations of common wheat doubled haploid progenies from wheat X maize crosses. Acta Botanica Sinica. Jan. 41(1): 55-59. {a} Institute of Genetics, Chinese Academy of Sciences, Beijing, 100101, China

Chen, R. M. (1999). Unequal distribution of 6-methoxy-2-benzoxazolinone (MBOA) is the main reason for phototropism in maize coleoptiles. Acta Botanica Sinica. March 41(3): 296-300. {a} Department of Biology, South China Normal University, Guangzhou, 510631, China

Chen, S. and C. D. Reese (1999). Parasitism of the nematode Heterodera glycines by the fungus Hirsutella rhossiliensis as influenced by crop sequence. Journal of Nematology. Dec. 31(4): 437-444. {a} Southern Research and Outreach Center, University of Minnesota, 35838 120th Street, Waseca, MN, 56093-4521, USA

Chen, W. and J. Chen (1999). Characteristics of calcium-activated protein kinase in the plasma membrane of corn root tip cells. Acta Botanica Sinica. Feb. 41(2): 166-170. {a} College of Biological Sciences, China Agricultural University, Beijing, 100094, China

Cheng, W. H. and P. S. Chourey (1999). Genetic evidence that invertase-mediated release of hexoses is critical for appropriate carbon partitioning and normal seed development in maize. Theoretical and Applied Genetics. March 98(3-4): 485-495. {a} Program in Plant Molecular and Cellular Biology, Department of Plant Pathology and Agronomy, University of Florida, Gainesville, FL, 32611-0680, USA

Chiaramonte, S., G. M. Giacometti, et al. (1999). Construction and characterization of a functional mutant of Synechocystis 6803 harbouring a eukaryotic PSII-H subunit. European Journal of Biochemistry 260(3): 833-843. {a} Dipartimento di Biologia, Universita di Padova, Via U. Bassi 58/B, 35131, Padova, Italy

Chiba, Y., M. Ishikawa, et al. (1999). Evidence for autoregulation of cystathionine gamma-synthase mRNA stability in Arabidopsis. Science Washington D C. Nov. 286(5443): 1371-1374. {a} Division of Applied Bioscience, Graduate School of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan

Chilimba, A. D. C., S. K. Mughogho, et al. (1999). Mehlich 3 or Modified Olsen for soil testing in Malawi. Communications in Soil Science and Plant Analysis. April 30(7-8): 1231-1250. {a} Chitedze Agricultural Research Station, Lilongwe, Malawi

Chlyah, O., O. Amail, et al. (1999). Doubled haploid plant production in durum wheat through wide crossing with Hordeum bulbosum and maize. Cahiers Agricultures. July Aug 8(4): 330-333. {a} Laboratoire de physiologie vegetale, Departement de biologie, Faculte des Sciences, Universite Mohammed-V, Rabat, Morocco

Chopart, J. L. and P. Siband (1999). Development and validation of a model to describe root length density of maize from root counts on soil profiles. Plant and Soil 214(1-2): 61-74. {a} Centre de Cooperation Internationale en Recherche Agronomique pour le Developpement (CIRAD), 34032, Montpellier Cedex, France

Christopher, M. E. and A. G. Good (1999). Evolution of a functionally related lactate dehydrogenase and pyruvate decarboxylase pseudogene complex in maize. Genome . Dec. 42(6): 1167-1175. {a} Department of Biological Sciences, University of Alberta, Edmonton, AB, T6G 2E9, Canada

Chung, S. W., P. W. Gassman, et al. (1999). Validation of EPIC for two watersheds in Southwest Iowa. Journal of Environmental Quality. May June 28(3): 971-979. {a} Center for Agric. and Rural Dev. Dep. of Economics, Iowa State Univ., Ames, IA, 50011, USA

Ciamporova, M. and I. Trginova (1999). Modifications of plant cell ultrastructure accompanying metabolic responses to low temperatures. Biologia Bratislava. Aug. 54(4): 349-360. {a} Institute of Botany, Slovak Academy of Sciences, Dubravska cesta 14, SK-84223, Bratislava, Slovakia

Ciceri, P., F. Locatelli, et al. (1999). The activity of the maize opaque2 transcriptional activator is regulated diurnally. Plant Physiology Rockville. Dec. 121(4): 1321-1327. {a} Department of Biology, University of California at San Diego, La Jolla, CA, 92093-0116, USA

Clapp, C. E. and M. H. B. Hayes (1999). Characterization of humic substances isolated from clay- and silt-sized fractions of a corn residue-amended agricultural soil. Soil Science. Dec. 164(12): 899-913. {a} Dept. of Soil, Water and Climate, USDA-ARS, University of Minnesota, Saint Paul, MN, 55108, USA

Clark, G. M. and D. A. Goolsby (1999). Occurrence and transport of acetochlor in streams of the Mississippi River Basin. Journal of Environmental Quality. Nov. Dec. 28(6): 1787-1795. {a} U.S. Geological Survey, 230 Collins Rd., Boise, ID, 83702, USA

Clarkson, D. T., E. Diogo, et al. (1999). Uptake and assimilation of sulphate by sulphur deficient Zea mays cells: The role of O-acetyl-L-serine in the interaction between nitrogen and sulphur assimilatory pathways. Plant Physiology and Biochemistry Paris. April 37(4): 283-290. {a} CBAA/DBEB, Instituto Superior de Agronomia, UTL, 1349-017, Lisboa Codex, Portugal

Clay, S. A., G. J. Lems, et al. (1999). Sampling weed spatial variability on a fieldwide scale. Weed Science. Nov. Dec. 47(6): 674-681. {a} Department of Plant Science, South Dakota State University, Brookings, SD, 57007, USA

Coelho, N. R. A. and O. D. Dhingra (1999). Hosts of Fusarium oxysporum f. sp. phaseoli. Fitopatologia Brasileira. June 24(2): 156-159. {a} Departamento de Agronomia, Universidade Federal Rural de Pernambuco, Area de Fitossanidade, CEP 50710-380, Recife, PE, Brazil

Collins, H. P., R. L. Blevins, et al. (1999). Soil carbon dynamics in corn-based agroecosystems: Results from carbon-13 natural abundance. Soil Science Society of America Journal. May June 63(3): 584-591. {a} Dep. of Crop and Soil Sciences, Michigan State Univ., East Lansing, MI, 48824-1325, USA

Colquhoun, J. B., R. R. Bellinder, et al. (1999). Efficacy of mechanical cultivation with and without herbicides in broccoli (Brassica oleracea), snap bean (Phaseolus vulgaris), and sweet corn (Zea mays). Weed Technology. April June 13(2): 244-252. {a} Department of Fruit and Vegetable Science, Cornell University, Ithaca, NY, 14853, USA

Comin, J. J., J. Barloy, et al. (1999). Differential effects of monomeric and polymeric aluminium on the root growth and on the biomass production of root and shoot of corn in solution culture. European Journal of Agronomy. Aug. 11(2): 115-122. {a} Centro de Ciencias Agrarias, Departamento de Engenharia Rural, Universidade Federal de Santa Catarina, 88010-970, Florianopolis, SC, Brazil

Commuri, P. D. and R. J. Jones (1999). Ultrastructural characterization of maize (Zea mays L.) kernels exposed to high temperature during endosperm cell division. Plant Cell and Environment. April 22(4): 375-385. {a} Department of Agronomy and Plant Genetics, University of Minnesota, 1991 Buford Circle, 411 Borlaug Hall, Saint Paul, MN, 55108, USA

Contreras, L. D., L. G. Chavez, et al. (1999). Two techniques for measuring neutral detergent (NDF) and acid detergent fibers (ADF) in forages and by-products. Archivos de Zootecnia. [print] 48(183): 351-354. {a} Facultad de Medicina Veterinaria y Zootecnia, Universidad de Colima, Tecoman, Colima, 28100, Mexico

Cooper, R. L., N. R. Fausey, et al. (1999). Yield response of corn to a subirrigation/drainage management system in northern Ohio. Journal of Production Agriculture. Jan. March 12(1): 74-77. {a} USDA-ARS, Dep. of Hortic. and Crop Sci., Ohio Agric. Res. and Devel. Cent. (OARDC), Wooster, OH, 44691, USA

Corkern, C. B., D. L. Jordan, et al. (1999). Influence of adjuvants on interactions of sethoxydim with selected broadleaf herbicides used in corn (Zea mays). Weed Technology. Oct. Dec. 13(4): 821-824. {a} Crop Science Department, North Carolina State University, Raleigh, NC, 27695, USA

Cornelius, P. L. and J. Crossa (1999). Prediction assessment of shrinkage estimators of multiplicative models for multi-environment cultivar trials. Crop Science. July Aug 39(4): 998-1009. {a} Biometrics and Statistics Unit, CIMMYT, Lisboa 27, 06600, Mexico, DF, Mexico

Correia, C. M., E. L. V. Areal, et al. (1999). Intraspecific variation in sensitivity to ultraviolet-B radiation in maize grown under field conditions. II. Physiological and biochemical aspects. Field Crops Research. June 62(2-3): 97-105. {a} Section of Biological and Environmental Engineering, University of Tras-os-Montes and Alto Douro, 5000, Vila Real, Portugal

Cox, K., D. Robertson, et al. (1999). Mapping and expression of a bifunctional thymidylate synthase, dihydrofolate reductase gene from maize. Plant Molecular Biology. Dec. 41(6): 733-739. {a} Dept. of Botany, North Carolina State University, Raleigh, NC, 27695-7612, USA

Cox, W. J., J. S. Singer, et al. (1999). Agronomics and economics of different weed management systems in corn and soybean. Agronomy Journal. July Aug 91(4): 585-591. {a} Dep. of Soil, Crop and Atmospheric Sci., Cornell Univ., Ithaca, NY, 14853, USA

Cromar, H. E., S. D. Murphy, et al. (1999). Influence of tillage and crop residue on postdispersal predation of weed seeds. Weed Science. March April 47(2): 184-194. {a} Department of Plant Agriculture, University of Guelph, Guelph, ON, N1G 2W1, Canada

Culpepper, A. S. and A. C. York (1999). Weed management in glufosinate-resistant corn (Zea mays). Weed Technology. April June 13(2): 324-333. {a} Crop Science Department, North Carolina State University, Raleigh, NC, 27695-7620, USA

da, S. D. M. P., O. J. V. de, et al. (1999). Identification of the sources of resistance in cultivars of maize to Spodoptera frugiperda (J. E. Smith, 1797) on farms. Brazilian Archives of Biology and Technology. [print] 42(1): 101-106. {a} Laboratorio de Bioinsumos, EPEAL/IPA, CEP. 50761-000, Recife, PE, Brazil

da, S. J. M., G. L. D. Feijo, et al. (1999). Animal performance and evaluation of forage potential production for silage making by means of different sources of nitrogen supplementation. Revista Brasileira de Zootecnia. May June 28(3): 642-653.

Dalmastri, C., L. Chiarini, et al. (1999). Soil type and maize cultivar affect the genetic diversity of maize root-associated Burkholderia cepacia populations. Microbial Ecology. Oct. 38(3): 273-284. {a} Dipartimento Innovazione, ENEA (Ente Nazionale per le Nuove Tecnologie, l'Energia e l'Ambiente) C.R. Casaccia, 00060, Rome, Italy

Daneshvar, M. H. and D. B. Dickinson (1999). Investigation of phytoglycogen, sugars and starch content in sugary and starchy corn (Zea mays L.). Crop Research Hisar. March 17(2): 195-208. {a} Department of Horticulture, University of Illinois, Urbana-Champaign, IL, 61801, USA

Datta, R., M. T. Selvi, et al. (1999). Stress-mediated enhancement of beta-amylase activity in pearl millet and maize leaves is dependent on light. Journal of Plant Physiology. May 154(5-6): 657-664. {a} School of Life Sciences, University of Hyderabad, Hyderabad, 500 046, India

Datta, R., K. J. M. Vally, et al. (1999). Sugar mimics the light-meditated beta-amylase induction and distribution in maize and pearl millet leaves. Journal of Plant Physiology. May 154(5-6): 665-672. {a} School of Life Sciences, University of Hyderabad, Hyderabad, 500 046, India

Davis, F. M., W. P. Williams, et al. (1999). Differential growth of fall armyworm larvae (Lepidoptera: Noctuidae) reared on three phenotypic regions of whorl leaves from a resistant and a susceptible maize hybrid. Florida Entomologist. June 82(2): 248-254. {a} Crop Science Research Laboratory, ARS, USDA, Mississippi State, MS, 39762, USA

Davis, F. M., W. P. Williams, et al. (1999). Evaluation of six maize hybrids for their susceptibility to feeding by three Diatraea spp. (Lepidoptera: Crambidae) by using laboratory bioassays. Journal of Agricultural and Urban Entomology. April 16(2): 107-112. {a} USDA - ARS, Mississippi State, MS, 39759, USA

Davis, G., M. Kobayashi, et al. (1999). Gibberellin biosynthesis in maize. Metabolic studies with GA15, GA24, GA25, GA7, and 2,3-dehydro-GA9. Plant Physiology Rockville. Nov. 121(3): 1037-1045. {a} Molecular, Cell and Developmental Biology, University of California, Los Angeles, 405 Hilgard Avenue, Los Angeles, CA, USA

de, A. F. S. L., F. D. M. da, et al. (1999). Productivity of maize cultivars (Zea mays L.) and quality of components and silage. Revista Brasileira de Zootecnia 28(1): 7-13. {a} Vicosa, MG, Brazil

de, C. M. L. M., A. A. C. van, et al. (1999). Pre-harvest stress cracks in maize (Zea mays L.) kernels as characterized by visual, X-ray and low temperature scanning electron microscopical analysis: Effect on kernel quality. Seed Science Research. Sept. 9(3): 227-236. {a} Laboratory of Plant Physiology, Agricultural University, Arboretumlaan 4, NL-6703 BD, Wageningen, Netherlands

de, F. P. L., R. W. Zobel, et al. (1999). Corn root growth in soil columns with artificially constructed aggregates. Crop Science. May June 39(3): 725-730. {a} USDA-ARS-ASWCRL, 1224 Airport Rd., Beaver, WV, 25813, USA

De, L. C., C. Varotto, et al. (1999). Multiple light-harvesting II polypeptides from maize mesophyll chloroplasts are distinct gene products. Journal of Photochemistry and Photobiology B Biology. March 49(1): 50-60. {a} Dipartimento di Biotecnologie Vegetali, Universita di Verona, Strada Le Grazie, I-37143, Verona, Italy

De, N. P., O. M. Dell, et al. (1999). Calcium-dependent phosphorylation regulates the plasma-membrane H+-ATPase activity of maize (Zea mays L.) roots. Planta Berlin. Aug. 209(2): 187-194. {a} Dipartimento di Fisiologia delle Piante Coltivate e Chimica Agraria, University of Milan, Via Celoria 2, I-20133, Milano, Italy

De, S. A., P. Landi, et al. (1999). Changes of mitochondrial properties in maize seedlings associated with selection for germination at low temperature. Fatty acid composition, cytochrome c oxidase, and adenine nucleotide translocase activities. Plant Physiology Rockville. Feb. 119(2): 743-754. {a} Laboratorio di Fisiologia Vegetale, Dipartimento di Biologia Evoluzionistica Sperimentale, Universita di Bologna, via Irnerio 42, I-40126, Bologna, Italy

Debnam, P. M. and M. J. Emes (1999). Subcellular distribution of enzymes of the oxidative pentose phosphate pathway in root and leaf tissues. Journal of Experimental Botany. Nov. 50(340): 1653-1661. {a} School of Biological Sciences, University of Manchester, Oxford Road, 3.614 Stopford Building, Manchester, M13 9PT, UK

del, C. M. M. and M. D. Garcia (1999). Influence of ploidy levels on phenotypic and cytogenetic traits in maize and Zea perennis hybrids. Cytologia Tokyo. March 64(1): 101-109. {a} Facultad de Ciencias Agrarias y Forestales, Instituto Fitotecnico de Santa Catalina, Universidad Nacional de La Plata. CIGen (UNLP, CONICET, CIC), Garibaldi 3400, 1836, Llavallol, Buenos Aires, Argentina

DeMaria, I. C., P. C. Nnabude, et al. (1999). Long-term tillage and crop rotation effects on soil chemical properties of a Rhodic Ferralsol in southern Brazil. Soil and Tillage Research. July 51(1-2): 71-79. {a} Centro de Solos e Recursos Agroambientais, Instituto Agronomico (IAC), CEP 13001-970, Campinas, SP, Brazil

Desaeger, J. and M. R. Rao (1999). The root-knot nematode problem in sesbania fallows and scope for managing it in western Kenya. Agroforestry Systems 47(1-3): 273-288. {a} International Centre for Research in Agroforestry (ICRAF), Nairobi, Kenya

Deutsch, M. and M. Long (1999). Intron-exon structures of eukaryotic model organisms. Nucleic Acids Research. Aug. 27(15): 3219-3228. {a} Department of Ecology and Evolution, The University of Chicago, 1101 East 57th Street, Chicago, IL, 60637, USA

DeWitt, G., J. Richards, et al. (1999). Comparative compositional analysis of walls with two different morphologies: Archetypical versus transfer-cell-like. Protoplasma 209(3-4): 238-245. {a} Department of Biology, University of North Carolina, Chapel Hill, NC, 27599-3280, USA

Diatloff, E., C. J. Asher, et al. (1999). Foliar application of rare earth elements to maize and mungbean. Australian Journal of Experimental Agriculture 39(2): 189-194. {a} Soil Science and Plant Nutrition, The University of Western Australia, Nedlands, Perth, WA, 6907, Australia

Dieleman, J. A., D. A. Mortensen, et al. (1999). Influence of velvetleaf (Abutilon theophrasti) and common sunflower (Helianthus annuus) density variation on weed management outcomes. Weed Science 47(1): 81-89. {a} Dep. Agronomy, Univ. Nebraska, Lincoln, NE 68483-0915, USA

Dijak, M., A. M. Modarres, et al. (1999). Leafy reduced-stature maize hybrids for short-season environments. Crop Science. July Aug 39(4): 1106-1110. {a} Plant Science Dep., McGill Univ., 21111 Lakeshore Road, Macdonald Campus, Sainte-Anne-de-Bellevue, PQ, H9X 3V9, Canada

Dixon, D. P., D. J. Cole, et al. (1999). Dimerisation of maize glutathione transferases in recombinant bacteria. Plant Molecular Biology. [print] Aug 40(6): 997-1008. {a} Crop Protection Group, Department of Biological Sciences, University of Durham, Durham, DH1 3LE, UK

Dolezel, J., J. Cihalikova, et al. (1999). Cell cycle synchronization in plant root meristems. Methods in Cell Science 21(2-3): 95-107. {a} Laboratory of Molecular Cytogenetics and Cytometry, Institute of Experimental Botany, Sokolovska 6, CZ-77200, Olomouc, Czech Republic

Dolgikh, Y. I., T. N. Pustovoitova, et al. (1999). The balance of endogenous phytohormones in immature embryos of maize lines competent and incompetent to somatic embryogenesis. Fiziologiya Rastenii Moscow. [print] Nov. Dec. 46(6): 861-864.

Dong, S. G., Y. X. Yu, et al. (1999). Contribution of an auxin to the uptake of nickel and cadmium in maize seedlings. Biomedical and Environmental Sciences. Sept. 12(3): 170-176. {a} Department of Environmentel Science, Shanxi University, Taiyuan, China

Dorrance, A. E., O. K. Miller, et al. (1999). Comparison of Stenocarpella maydis isolates for isozyme and cultural characteristics. Plant Disease. July 83(7): 675-680. {a} Department of Plant Pathology, Ohio State University, Wooster, 44691, USA

Doucet, C., S. E. Weaver, et al. (1999). Separating the effects of crop rotation from weed management on weed density and diversity. Weed Science. Nov. Dec. 47(6): 729-735. {a} Greenhouse and Processing Crops Research Centre, Agriculture and Agri-Food Canada, Harrow, ON, N0R 1G0, Canada

Dresselhaus, T., S. Cordts, et al. (1999). Novel ribosomal genes from maize are differentially expressed in the zygotic and somatic cell cycles. Molecular and General Genetics. March 261(2): 416-427. {a} Applied Plant Molecular Biology II, University of Hamburg, Ohnhorststr. 18, D-22609, Hamburg, Germany

Dresselhaus, T., S. Cordts, et al. (1999). A transcript encoding translation initiation factor eIF-5A is stored in unfertilized egg cells of maize. Plant Molecular Biology. March 39(5): 1063-1071. {a} Applied Plant Molecular Biology II, University of Hamburg, Ohnhorststrasse 18, 22609, Hamburg, Germany

Drouet, J. L. and R. Bonhomme (1999). Do variations in local leaf irradiance explain changes to leaf nitrogen within row maize canopies? Annals of Botany London. July 84(1): 61-69. {a} Unite de Recherche en Bioclimatologie, Institut National de la Recherche Agronomique, 78850, Thiverval-Grignon, France

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

du, P. H. G. and A. S. Claassens (1999). Changes in inorganic and organic phosphorus in soil under maize (Zea mays) cultivation. South African Journal of Plant and Soil. Nov. 16(4): 207-213. {a} ARC-Institute for Soil, Climate and Water, Pretoria, 0001, South Africa

du, T. L. J. and J. K. Pataky (1999). Variation associated with silk channel inoculation for common smut of sweet corn. Plant Disease. Aug. 83(8): 727-732. {a} Department of Crop Sciences, University of Illinois, Urbana, IL, 61801, USA

du, T. L. J. and J. K. Pataky (1999). Effects of silk maturity and pollination on infection of maize ears by Ustilago maydis. Plant Disease. July 83(7): 621-626. {a} Department of Crop Sciences, University of Illinois, Urbana, 61801, USA

du, T. L. J. and J. K. Pataky (1999). Reactions of processing sweet corn hybrids to Gibberella ear rot. Plant Disease 83(2): 176-180. {a} Dep. Crop Sci., Univ. Ill., Urbana, IL 61801, USA

Ducruet, J. M. (1999). Relation between the heat-induced increase of F0 fluorescence and a shift in the electronic equilibrium at the acceptor side of photosystem 2. Photosynthetica Prague 37(2): 335-338. {a} Section de Bioenergetique, INRA/CEA Saclay, Bat. 532, F-91191, Gif-sur-Yvette Cedex, France

Duffera, M., W. P. Robarge, et al. (1999). Greenhouse evaluation of processed swine lagoon solids as a fertilizer source. Journal of Plant Nutrition. Nov. 22(11): 1701-1715. {a} Department of Soil Science, North Carolina State University, Raleigh, NC, 27695-7619, USA

Dushenkov, S., A. Mikheev, et al. (1999). Phytoremediation of radiocesium-contaminated soil in the vicinity of Chernobyl, Ukraine. Environmental Science and Technology 33(3): 469-475. {a} Phytotech Inc., 1 Deer Park Drive, Suite I, Monmouth Junction, NJ 08852, USA

Duvick, D. N. and K. G. Cassman (1999). Post-green revolution trends in yield potential of temperate maize in the north-central United States. Crop Science. Nov. Dec. 39(6): 1622-1630. {a} Dep. of Agronomy, Univ. of Nebraska, Lincoln, NB, 68583-0915, USA

e, O. J. S., R. d. P. Ferreira, et al. (1999). Adaptability and stability of maize cultivars for silage in relation to the rumen degradable dry matter yield. Revista Brasileira de Zootecnia. March April 28(2): 230-234. {a} Pesquisador da Embrapa Gado de Leite, Rua Eugenio do Nascimento, 610 - Dom Bosco, 36038-330, Juiz de Fora, MG, Brazil

Earl, H. J. and M. Tollenaar (1999). Using chlorophyll fluorometry to compare photosynthetic performance of commercial maize (Zea mays L.) hybrids in the field. Field Crops Research. May 61(3): 201-210. {a} Department of Crop and Soil Sciences, University of Georgia, D.W. Brooks drive, Miller Plant Sciences Building, Athens, GA, 30602, USA

Edmeades, G. O., J. Bolanos, et al. (1999). Selection improves drought tolerance in tropical maize populations: I. Gains in biomass, grain yield, and harvest index. Crop Science. Sept. Oct. 39(5): 1306-1315. {a} Pioneer Hi-Bred International, Inc., 7431 Kaumualii Highway, Kekaha, HI, 96752, USA

Eghball, B. (1999). Liming effects of beef cattle feedlot manure or compost. Communications in Soil Science and Plant Analysis. Nov. 30(19-20): 2563-2570. {a} Department of Agronomy, USDA-ARS, University of Nebraska-Lincoln, Lincoln, NB, 68583, USA

Eghball, B. and J. E. Gilley (1999). Phosphorus and nitrogen in runoff following beef cattle manure or compost application. Journal of Environmental Quality. July Aug 28(4): 1201-1210. {a} Dep. of Agronomy and USDA-ARS, Univ. of Nebraska, Lincoln, NE, 68583, USA

Eghball, B. and J. F. Power (1999). Composted and noncomposted manure application to conventional and no-tillage systems: Corn yield and nitrogen uptake. Agronomy Journal. Sept. Oct. 91(5): 819-825. {a} Dep. of Agronomy and USDA-ARS, Univ. of Nebraska-Lincoln, Lincoln, NE, USA

Eghball, B. and J. F. Power (1999). Phosphorus- and nitrogen-based manure and compost applications: Corn production and soil phosphorus. Soil Science Society of America Journal. July Aug 63(4): 895-901. {a} Dep. of Agronomy, USDA-ARS, Univ. of Nebraska-Lincoln, Lincoln, NB, 68583, USA

Ekesi, S., N. K. Maniania, et al. (1999). Effect of intercropping cowpea with maize on the performance of Metarhizium anisopliae against Megalurothrips sjostedti (Thysanoptera: Thripidae) and predators. Environmental Entomology. Dec. 28(6): 1154-1161. {a} International Centre of Insect Physiology and Ecology, Nairobi, Kenya

El, N. M. A., A. E. M. Fadl, et al. (1999). Effect of aflatoxin G1 on germination, growth and metabolic activities of some crop plants. Cytobios 97(385): 87-93. {a} Department of Botany, Faculty of Science, Minia University, Minia, Egypt

Elliott, A. R., J. A. Campbell, et al. (1999). Green-fluorescent protein facilitates rapid in vivo detection of genetically transformed plant cells. Plant Cell Reports. May 18(9): 707-714. {a} CSIRO Tropical Agriculture, 120 Meiers Rd, Indooroopilly, QLD, 4068, Australia

Elmore, R. W. and R. B. Ferguson (1999). Mid-season stalk breakage in corn: Hybrid and environmental factors. Journal of Production Agriculture. April June 12(2): 293-299. {a} Univ. of Nebraska South Central Res. and Ext. Cent., Clay Center, NE, 68933, USA

Elmore, R. W. and F. W. Roeth (1999). Corn kernel weight and grain yield stability during post-maturity drydown. Journal of Production Agriculture. April June 12(2): 300-305. {a} Univ. of Nebraska South Central Res. and Ext. Cent., Clay Center, NE, 68933, USA

Emuh, F. N. and A. A. Agboola (1999). Effect of intercropping sweet potato (Ipomea batatas) with pigeonpea (Cajanus cajan) and okra (Hibiscus esculentus) on economic yield of maize (Zea mays) and maximization of land use. Indian Journal of Agricultural Sciences. March 69(3): 172-174. {a} University of Ibadan, Ibadan, Nigeria

Engels, C. (1999). Regulation of xylem transport of calcium from roots to shoot of maize by growth-related demand. Journal of Plant Nutrition and Soil Science. June 162(3): 287-294. {a} Fachgruppe Geowissenschaften, Abteilung Agraroekologie, Universitaet Bayreuth, D-95440, Bayreuth, Germany

Esgar, R. W. and D. G. Bullock (1999). Thinning border rows differentially affects hybrids in corn yield trials. Crop Science. Sept. Oct. 39(5): 1358-1361. {a} Dep. of Crop Sciences, Univ. of Illinois, Urbana, IL, 61801-4798, USA

Espana, M. L., F. Baret, et al. (1999). Modeling maize canopy 3D architecture: Application to reflectance simulation. Ecological Modelling. Oct. 122(1-2): 25-43. {a} INRA-Bioclimatologie Site Agroparc, 84914, Avignon cedex 9, France

Eta, N. J. T. and S. J. Openshaw (1999). Epistasis for grain yield in two F2 populations of maize. Crop Science 39(2): 346-352. {a} Univ. of Minnesota, 1991 Buford Circle, 411 Borlaug Hall, Saint Paul, MN, 55108, USA

Evans, L. T. and R. A. Fischer (1999). Yield potential: Its definition, measurement, and significance. Crop Science. Nov. Dec. 39(6): 1544-1551. {a} Division of Plant Industry, CSIRO, Canberra, ACT, 2601, Australia

Fageria, N. K. and V. C. Baligar (1999). Growth and nutrient concentrations of common bean, lowland rice, corn, soybean, and wheat at different soil pH on an Inceptisol. Journal of Plant Nutrition. Sept. 22(9): 1495-1507. {a} EMBRAPA-National Rice and Bean Research Center, Santo Antonio de Goias, GOA, Cep. 75375-000, Brazil

Farahani, H. J., G. W. Buchleiter, et al. (1999). Seasonal evaluation of the Root Zone Water Quality Model in Colorado. Agronomy Journal. March April 91(2): 212-219. {a} ARS, Water Management Res. Unit, USDA, Colorado State Univ., Fort Collins, CO, 80523, USA

Farineau, J. (1999). Study of the non-photochemical dark rise in chlorophyll fluorescence in pre-illuminated leaves of various C3 and C4 plants submitted to partial anaerobiosis. Plant Physiology and Biochemistry Paris. Dec. 37(12): 911-918. {a} Section de bioenergetique, CEA Saclay, 91191, Gif-Sur-Yvette cedex, France

Fausey, J. C., D. Penner, et al. (1999). Adjuvant effects on CGA-248757 and flumiclorac efficacy and crop tolerance. Weed Technology. Oct. Dec. 13(4): 783-790. {a} Department of Crop and Soil Sciences, Michigan State University, East Lansing, MI, 48824-1325, USA

Feldmann, F. and C. Boyle (1999). Weed-mediated stability of arbuscular mycorrhizal effectiveness in maize monocultures. Journal of Applied Botany. May 73(1-2): 1-5. {a} Konstantin-Uhde-Strasse 13, D-38106, Braunschweig, Germany

Felix, J. and M. D. K. Owen (1999). Weed population dynamics in land removed from the conservation reserve program. Weed Science. Sept. Oct. 47(5): 511-517. {a} Department of Agronomy, Iowa State University, Ames, IA, USA

Fernandez, D. and M. Castrillo (1999). Maize leaf rolling initiation. Photosynthetica Prague 37(3): 493-497. {a} Depto. Biologia Organismos, Universidad Simon Bolivar, Caracas, 1080, Venezuela

Fernandez, R. C., F. Luque, et al. (1999). Biochemical characterisation of flagellates isolated from fruits and seeds from Brazil. FEMS Microbiology Letters 170(2): 343-348. {a} Inst. Biotecnol., Grupo Bioquim. y Parasitol. Mol., Fac. Cienc., Univ. Granada, C/Severo Ochoa s/n, E-18071 Granada, Spain

Firdous, R. and A. H. Gilani (1999). Effect of stage of growth and cultivar on chemical composition of whole maize plant and its morphological fractions. Asian Australasian Journal of Animal Sciences 12(3): 366-370. {a} Department of Animal Nutrition, University of Agriculture, Faisalabad, Pakistan

Fischler, M. and C. S. Wortmann (1999). Green manures for maize-bean systems in eastern Uganda: Agronomic performance and farmers' perceptions. Agroforestry Systems 47(1-3): 123-138. {a} PASOLAC/IICA, San Salvador, El Salvador

Fischler, M., C. S. Wortmann, et al. (1999). Crotalaria (C. ochroleuca G. Don.) as a green manure in maize-bean cropping systems in Uganda. Field Crops Research 61(2): 97-107. {a} Institute of Plant Sciences, ETHZ, Universitatstrasse 2, CH-8092, Zurich, Switzerland

Fisher, M. J., N. R. Fausey, et al. (1999). Water table management, nitrogen dynamics, and yields of corn and soybean. Soil Science Society of America Journal. Nov. Dec. 63(6): 1786-1795. {a} Soil Drainage Research Unit, USDA-ARS, 590 Woody Hayes Dr., Columbus, OH, 43210, USA

Forlani, G. (1999). Purification and properties of a pyruvate carboligase from Zea mays cultured cells. Phytochemistry Oxford. April 50(8): 1305-1310. {a} Department of Genetics and Microbiology, University of Pavia, I-27100, Pavia, Italy

Forlani, G., M. Mantelli, et al. (1999). Biochemical evidence for multiple acetonin-forming enzymes in cultured plant cells. Phytochemistry Oxford 50(2): 255-262. {a} Dep. Genet. Microbiol., Univ. Pavia, I-27100 Pavia, Italy

Foroutan, p. K., P. Dutilleul, et al. (1999). Soybean canopy development as affected by population density and intercropping with corn: Fractal analysis in comparison with other quantitative approaches. Crop Science. Nov. Dec. 39(6): 1784-1791. {a} Dep. of Plant Science, McGill Univ., 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, PQ, H9X 3V9, Canada

Fracheboud, Y., P. Haldimann, et al. (1999). Chlorophyll fluorescence as a selection tool for cold tolerance of photosynthesis in maize (Zea mays L.). Journal of Experimental Botany. Sept. 50(338): 1533-1540. {a} Institute of Plant Sciences, Swiss Federal Institute of Technology of Zurich, Universitatstrasse 2, CH-8092, Zurich, Switzerland

Franco, J., J. Crossa, et al. (1999). A two-stage, three-way method for classifying genetic resources in multiple environments. Crop Science. Jan. Feb. 39(1): 259-267. {a} Biometrics Stat. Unit, CIMMYT, Lisboa 27, Apdo. Postal 6-641, 06600 Mexicio, D.F., Mexico

Franklin, A. E., J. McElver, et al. (1999). Three-dimensional microscopy of the Rad51 recombination protein during meiotic prophase. Plant Cell. May 11(5): 809-824. {a} Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley, CA, 94720, USA

Frisch, M., M. Bohn, et al. (1999). Comparison of selection strategies for marker-assisted backcrossing of a gene. Crop Science. Sept. Oct. 39(5): 1295-1301. {a} Institute of Plant Breeding, Seed Science, and Population Genetics, University of Hohenheim, 70593, Stuttgart, Germany

Frolov, K. B., N. P. Demchenko, et al. (1999). Growth and cell division of mesocotyls of Zea mays (Poaceae) seedlings in the darkness and under the red light. Botanicheskii Zhurnal St Petersburg. [print] June 84(6): 59-63.

Frova, C., P. Krajewski, et al. (1999). Genetic analysis of drought tolerance in maize by molecular markers: I. Yield components. Theoretical and Applied Genetics. July 99(1-2): 280-288. {a} Department of Genetics and Microbiology, University of Milano, Via Celoria 26, 20133, Milano, Italy

Fullen, M. A., D. J. Mitchell, et al. (1999). Soil erosion and conservation in Yunnan Province, China. Ambio . March 28(2): 125-129. {a} School of Applied Sciences, The University of Wolverhampton, Wolverhampton, WV1 1SB, UK

Furumoto, T., S. Hata, et al. (1999). cDNA cloning and characterization of maize phosphoenolpyruvate carboxykinase, a bundle sheath cell-specific enzyme. Plant Molecular Biology. Oct. 41(3): 301-311. {a} Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan

Galina, A., C. Logullo, et al. (1999). Sugar phosphorylation modulates ADP inhibition of maize mitochondrial hexokinase. Physiologia Plantarum 105(1): 17-23. {a} Dpto de Bioquimica Medica, Instituto de Ciencias Biomedicas, Centro de Ciencias da Saude, Univ. Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-590, Brazil

Gallaher, K., T. C. Mueller, et al. (1999). Absorption, translocation, and metabolism of primisulfuron and nicosulfuron in broadleaf signalgrass (Brachiaria platyphylla) and corn. Weed Science 47(1): 8-12. {a} Dep. Plant Soil Sci., Univ. Tennessee, Knoxville, TN 37996, USA

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

Garcia, M. N., I. J. A. Martinez, et al. (1999). Unusual electrophoretic mobility of maize Hrgp mRNA. Plant Physiology and Biochemistry Paris. July Aug 37(7-8): 605-610. {a} Departament de Genetica Molecular, Institut de Biologia Molecular de Barcelona, CID-CSIC, Jordi Girona, 18, 08034, Barcelona, Spain

Garten, C. T., Jr. and S. D. Wullschleger (1999). Soil carbon inventories under a bioenergy crop (Switchgrass): Measurement limitations. Journal of Environmental Quality. July Aug 28(4): 1359-1365. {a} Environmental Sciences Division, Oak Ridge National Lab., Oak Ridge, TN, 37831-6038, USA

Gautam, A. S., R. K. Mittal, et al. (1999). Correlations and path analysis in popcorn (Zea mays Everta.). Annals of Biology Hissar. Dec. 15(2): 193-196. {a} Department of Plant Breeding and Genetics, Himachal Pradesh Krishi Vishvavidyalaya, Palampur, 176 002, India

Gebrekidan, H., A. Belay, et al. (1999). Yield response of maize (Zea mays L.) to crop residue management on two major soil types Of Alemaya, Eastern Ethiopia: I. Effects of varying rates of applied and residual N and P fertilizers. Nutrient Cycling in Agroecosystems. May 54(1): 65-71. {a} Alemaya University of Agriculture, Dire Dawa, Ethiopia

Gehring, C. A. (1999). Natriuretic peptides-A new class of plant hormone? Annals of Botany London 83(4): 329-334. {a} School of Biological and Chemical Sciences, Deakin University, Geelong, VIC, 3217, Australia

Geier, P. W. and P. W. Stahlman (1999). EXP 31130A efficacy and corn (Zea mays) response in western Kansas. Weed Technology. April June 13(2): 404-410. {a} Kansas State University Agricultural Research Center, Hays, KS, 67601, USA

Genchi, G., A. Spagnoletta, et al. (1999). Purification and characterization of the reconstitutively active citrate carrier from maize mitochondria. Plant Physiology Rockville. July 120(3): 841-847. {a} Department of Pharmaco-Biology, Laboratory of Biochemistry and Molecular Biology, Consiglio Nazionale delle Ricerche Unit for the Study of Mitochondria and Bioenergetics, University of Bari, 70125, Bari, Italy

Gengenbach, B. G., K. L. VanDee, et al. (1999). Genetic relationships of alleles for tolerance to sethoxydim herbicide in maize. Crop Science. May June 39(3): 812-818. {a} Dep. of Agronomy and Plant Genetics, Univ. Minnesota, Saint Paul, MN, 55108, USA

Georget, D. M. R., A. Ng, et al. (1999). Thermal characterisation of oxidatively cross-linked American corn bran hemicellulose. Journal of the Science of Food and Agriculture 79(3): 481-483. {a} Institute of Food Research, Norwich Research Park, Colney, Norwich, NR4 7UA, UK

Ghidey, F., E. E. Alberts, et al. (1999). Evaluation of the Root Zone Water Quality Model using field-measured data from the Missouri MSEA. Agronomy Journal. March April 91(2): 183-192. {a} Dep. of Biological and Agric. Engineering, Univ. of Missouri, Columbia, MO, 65211, USA

Gibbon, B. C., D. R. Kovar, et al. (1999). Latrunculin B has different effects on pollen germination and tube growth. Plant Cell. Dec. 11(12): 2349-2363. {a} Department of Biological Sciences, Purdue University, 1392 Lilly Hall of Life Sciences, West Lafayette, IN, 47907-1392, USA

Giebink, B. L., J. M. Scriber, et al. (1999). Survival and growth of two Hydraecia species (Noctuidae: Lepidoptera) on eight midwest grass species. Great Lakes Entomologist. [print] Winter 32(4): 247-256. {a} Department of Entomology, Michigan State University, East Lansing, MI, 48824, USA

Gonzalez, J. and L. Ukrainczyk (1999). Organic chemicals in the environment: Transport of nicosulfuron in soil columns. Journal of Environmental Quality 28(1): 101-107. {a} Dep. Agron., Iowa State Univ., Ames, IA 50011, USA

Goodman, A. M. and A. R. Ennos (1999). The effects of soil bulk density on the morphology and anchorage mechanics of the root systems of sunflower and maize. Annals of Botany London 83(3): 293-302. {a} School of Agriculture, Lindsey Centre, De Montfort University Lincoln, Riseholme, Lincoln, LN2 2LG, UK

Gorzalczany, S., A. Rojo, et al. (1999). Oral acute toxicity assay of Argentine medicinal plants. Acta Farmaceutica Bonaerense. July Sept 18(3): 221-224. {a} Catedra de Farmacognosia, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Junin 956, 1113, Buenos Aires, Argentina

Gough, R. E. and R. Carlstrom (1999). Wheat gluten meal inhibits germination and growth of broadleaf and grassy weeds. Hortscience . April 34(2): 269-270. {a} Department of Plant Sciences, Montana State University, Bozeman, MT, 59717-3140, USA

Graeber, J. V., E. D. Nafziger, et al. (1999). Evaluation of transgenic, Bt-containing corn hybrids. Journal of Production Agriculture. Oct. Dec. 12(4): 659-663. {a} Dep. of Crop Sci., Univ. of Illinois, 1102 S. Goodwin Ave., Urbana, IL, 61801, USA

Grant, R. H. (1999). Ultraviolet-B and photosynthetically active radiation environment of inclined leaf surfaces in a maize canopy and implications for modeling. Agricultural and Forest Meteorology. June 95(3): 187-201. {a} Department of Agronomy, Purdue University, 1150 Lily Hall, West Lafayette, IN, 4707-1150, USA

Grant, W. F. (1999). Higher plant assays for the detection of chromosomal aberrations and gene mutations-A brief historical background on their use for screening and monitoring environmental chemicals. Mutation Research. May 426(2): 107-112. {a} Department of Plant Science, McGill University, Macdonald Campus, Sainte Anne de Bellevue, PQ, H9X 3V9, Canada

Greef, J. M., H. Ott, et al. (1999). Growth analysis of dry matter accumulation and N uptake of forage maize cultivars affected by N supply. Journal of Agricultural Science 132(1): 31-43. {a} Department of Grass and Forage Science, Institute of Crop Science and Plant Breeding, University of Kiel, Olshausenstr. 40, 24118, Kiel, Germany

Grobler, L., A. A. Bloem, et al. (1999). A critical soil sulphur level for maize (Zea mays L.) grown in a glasshouse. South African Journal of Plant and Soil. Nov. 16(4): 204-206. {a} Department of Plant Production and Soil Science, University of Pretoria, Pretoria, 0002, South Africa

Grzesiak, S., T. Hura, et al. (1999). The impact of limited soil moisture and waterlogging stress conditions on morphological and anatomical root traits in maize (Zea mays L.) hybrids of different drought tolerance. Acta Physiologiae Plantarum 21(3): 305-315. {a} Franciszek Gorski Department of Plant Physiology, Polish Academy of Sciences, Podluzna 3, PL 30-239, Cracow, Poland

Guan, X., T. Diez, et al. (1999). Geranoyl-CoA carboxylase: A novel biotin-containing enzyme in plants. Archives of Biochemistry and Biophysics 362(1): 12-21. {a} Dep. Botany, Iowa State University, Ames, Iowa 50011, USA

Guerra, B. and O. G. Issinger (1999). Protein kinase CK2 and its role in cellular proliferation, development and pathology. Electrophoresis 20(2): 391-408. {a} Biokemisk Institut, Odense Universitet, Campusvej 55, 5230, Odense M, Denmark

Guillard, K., T. F. Morris, et al. (1999). The pre-sidedress soil nitrate test and nitrate leaching from corn. Journal of Environmental Quality. Nov. Dec. 28(6): 1845-1852. {a} Dep. of Plant Science, U-67, Univ. of Connecticut, 1376 Storrs Road, Storrs, CT, 06269, USA

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Guntli, D., S. Burgos, et al. (1999). Calystegine degradation capacities of microbial rhizosphere communities of Zea mays (calystegine-negative) and Calystegia sepium (calystegine-positive). FEMS Microbiology Ecology 28(1): 75-84. {a} Phytopathology Group, Institute Plant Sciences, Swiss Federal Institute Technology ETH, Universitaetstr. 2, CH-8092 Zurich, Switzerland

Haas, J. A. and B. G. Fox (1999). Role of hydrophobic partitioning in substrate selectivity and turnover of the Ricinus communis stearoyl acyl carrier protein DELTA9 desaturase. Biochemistry . Sept. 38(39): 12833-12840. {a} Graduate School, Institute for Enzyme Research, University of Wisconsin, Madison, WI, 53705, USA

Haldimann, P. (1999). How do changes in temperature during growth affect leaf pigment composition and photosynthesis in Zea mays genotypes differing in sensitivity to low temperature? Journal of Experimental Botany 50(333): 543-550. {a} Laboratory of Bioenergetics, University of Geneva, 10 chemin des Embrouchis, CH-1254, Jussy-Lullier/GE, Switzerland

Hallman, A. and D. J. Lowenberg (1999). Cost, average returns, and risk of switching to narrow row corn. Journal of Production Agriculture. Oct. Dec. 12(4): 685-691. {a} Dep. of Agric., Econ., Purdue Univ., Krannert Bldg. 622, West Lafayette, IN, 47907, USA

Halvorson, A. D., C. A. Reule, et al. (1999). Nitrogen fertilization effects on soil carbon and nitrogen in a dryland cropping system. Soil Science Society of America Journal. July Aug 63(4): 912-917. {a} USDA-ARS, Fort Collins, CO, 80522, USA

Hameleers, A., K. A. Leach, et al. (1999). The effects of incorporating sugar beet pulp with forage maize at ensiling on silage fermentation and effluent output using drum silos. Grass and Forage Science. Dec. 54(4): 322-335. {a} SAC Food and Farming Systems Department, Crichton Royal Farm, Mid Park, Bankend Road, Dumfries, DG1 4SZ, UK

Hammack, L., B. E. Hibbard, et al. (1999). Behavioral response of corn rootworm adults to host plant volatiles perceived by western corn rootworm (Coleoptera: Chrysomelidae). Environmental Entomology. Dec. 28(6): 961-967. {a} Northern Grain Insects Research Laboratory, USDA-ARS, 2923 Medary Ave., Brookings, SD, 57006, USA

Hammond, R. B., T. Beck, et al. (1999). Slugs in conservation tillage corn and soybeans in the eastern corn belt. Journal of Entomological Science. Oct. 34(4): 467-478. {a} Department of Entomology, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, OH, USA

Hao, L., H. Liang, et al. (1999). Effects of water stress and rewatering on turnover and gene expression of photosystem II reaction center polypeptide D1 in Zea mays. Australian Journal of Plant Physiology 26(4): 375-378. {a} Department of Biology, Sichuan University of Union, Chengdu, 610064, China

Hao, L. M., H. L. Wang, et al. (1999). Effects of rewatering on light-harvesting chlorophyll a/b-protein complex of photosystem II in Zea mays. Acta Botanica Sinica. June 41(6): 613-616. {a} Department of Biology, Sichuan University, Chengdu, 610064, China

Harris, L. J., A. E. Desjardins, et al. (1999). Possible role of trichothecene mycotoxins in virulence of Fusarium graminearum on maize. Plant Disease. Oct. 83(10): 954-960. {a} Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, Ottawa, ON, K1A 0C6, Canada

Hasenstein, K. H., E. B. Blancaflor, et al. (1999). The microtubule cytoskeleton does not integrate auxin transport and gravitropism in maize roots. Physiologia Plantarum. April 105(4): 729-738. {a} Biology Department, University of Southwestern Louisiana, Lafayette, LA, 70504-2451, USA

Hatfield, J. L., D. B. Jaynes, et al. (1999). Water quality in Walnut Creek watershed: Setting and farming practices. Journal of Environmental Quality 28(1): 11-24. {a} USDA-ARS, Natl. Soil Tilth Lab., 2150 Pammel Dr., Ames, IA 50011-4420, USA

Hawk, J. A. and T. Weldekidan (1999). Registration of DE1 and DE2 parental inbred lines of maize. Crop Science. May June 39(3): 886. {a} Dep. of Plant and Soil Sciences, Univ. of Delaware, Newark, DE, 19717-1303, USA

He, P. and J. Y. Jin (1999). Relationships among hormone changes, transmembrane Ca2+ flux and lipid peroxidation during leaf senescence in spring maize. Acta Botanica Sinica. [print] Nov 41(11): 1221-1225. {a} Soil and Fertilizer Institute, Key Laboratory of Plant Nutrition Research, Ministry of Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China

Heck, D. A., D. Miles, et al. (1999). Characterization of two photosynthetic mutants of maize. Plant Physiology Rockville. Aug. 120(4): 1129-1136. {a} Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA, 50011, USA

Heckel, T., K. Werner, et al. (1999). Novel phenotypes and developmental arrest in early embryo specific mutants of maize. Planta Berlin. Nov. 210(1): 1-8. {a} RDP, UMR 9938 INRA-CNRS-ENSL, ENS-Lyon, 46 Allee d'Italie, F-69364, Lyon Cedex 07, France

Heikens, K. E., D. L. Karlen, et al. (1999). Tillage effects on previously flooded soils. Journal of Production Agriculture. July Sept 12(3): 409-414. {a} USDA-ARS National Soil Tilth Lab, 2150 Pammel Dr, Ames, IA, 50011-4420, USA

Hellin, J., L. A. Welchez, et al. (1999). The Quezungual System: An indigenous agroforestry system from western Honduras. Agroforestry Systems 46(3): 229-237. {a} 11 Magdalen Road, Oxford, OX4 1RW, UK

Hema, M., M. Venkatramana, et al. (1999). Biological, antigenic and genomic relationships among the virus isolates causing mosaic disease of sugarcane in South India. Current Science Bangalore. Sept. 77(5): 698-702. {a} Department of Virology, Sri Venkateswara University, Tirupati, 517 502, India

Heslop, H. J., H. J. S. Heslop, et al. (1999). The structure and prophylactic role of the angiosperm embryo sac and its associated tissues: Zea mays as a model. Protoplasma 209(3-4): 256-272. {a} John Innes Centre, Norwich, NR4 7UH, UK

Hetherington, P. R., T. L. Reynolds, et al. (1999). The absorption, translocation and distribution of the herbicide glyphosate in maize expressing the CP-4 transgene. Journal of Experimental Botany. Oct. 50(339): 1567-1576. {a} Department of Plant Biology, Plant Science Division, SAC Auchincruive, Ayr, KA6 5HW, UK

Heydel, L., M. Benoit, et al. (1999). Reducing atrazine leaching by integrating reduced herbicide use with mechanical weeding in corn (Zea mays). European Journal of Agronomy. Nov. 11(3-4): 217-225. {a} INRA Station SAD, Domaine du Joly, Mirecourt Cedex, France

Hibbard, B. E., B. D. Barry, et al. (1999). Controlled field infestations with western corn rootworm (Coleoptera: Chrysomelidae) eggs in Missouri: Effects of egg strains, infestation dates, and infestation levels on corn root damage. Journal of the Kansas Entomological Society. April 72(2): 214-221. {a} Plant Genetics Research Unit, USDA-ARS, University of Missouri, 109 Curtis Hall, Columbia, MO, 65211, USA

Hill, G. M., P. R. Utley, et al. (1999). Pearl millet silage for growing beef heifers and steers. Journal of Production Agriculture. Oct. Dec. 12(4): 653-658. {a} Animal and Dairy Sci. Dep., Univ. of Georgia Coastal Plain Exp. Stn., Tifton, GA, 31793, USA

Hill, M., D. Melanson, et al. (1999). Identification of the aph IV gene from protoplast-derived maize plants by a simple nonradioactive DNA hybridization method. In Vitro Cellular and Developmental Biology Plant. March April 35(2): 154-155. {a} Novartis Agribusiness Biotechnology Research Inc., Research Triangle Park, NC, 27709-2257, USA

Hirasawa, T. and T. C. Hsiao (1999). Some characteristics of reduced leaf photosynthesis at midday in maize growing in the field. Field Crops Research. June 62(1): 53-62. {a} Department of Land, Air and Water Resources, University of California, Davis, CA, 95616, USA

Hoffman, M. L., D. D. Buhler, et al. (1999). Weed population and crop yield response to recommendations from a weed control decision aid. Agronomy Journal. May June 91(3): 386-392. {a} USDA-ARS Natl. Soil Tilth Lab., 2150 Pammel Dr., Ames, IA, 50011, USA

Hola, D. (1999). The content of light-harvesting complexes in different maize (Zea mays L.) genotypes. Photosynthetica Prague 37(3): 489-492. {a} Department of Genetics and Microbiology, Faculty of Science, Charles University, Vinicna 5, CZ-128 44, Praha, 2, Czech Republic

Hola, D., M. Kocova, et al. (1999). Genetically based differences in photochemical activities of isolated maize (Zea mays L.) mesophyll chloroplasts. Photosynthetica Prague 36(1-2): 187-197. {a} Department of Genetics and Microbiology, Faculty of Science, Charles University, Vinicna 5, CZ-128 44, Praha, 2, Czech Republic

Hood, R. C., G. K. N, et al. (1999). A comparison of direct and indirect 15N isotope techniques for estimating crop N uptake from organic residues. Plant and Soil. July 208(2): 259-270. {a} Soil Science Unit, FAO/IAEA Agriculture and Biotechnology Laboratory, A-2444, Seibersdorf, Austria

Hooker, B. A. and T. F. Morris (1999). End-of-season corn stalk test for excess nitrogen in silage corn. Journal of Production Agriculture. April June 12(2): 282-288. {a} Dep. of Plant Sci., Univ. of Connecticut, 1376 Storrs Road, Storrs, CT, 06269, USA

Horowitz, A. J., D. K. Cassel, et al. (1999). Soil physical and chemical properties under continuous maize and a maize-mucuna rotation on hillsides in Honduras. Tropical Agriculture. July 76(3): 164-170. {a} Department of Soil Science, North Carolina State University, Raleigh, NC, 27695-7619, USA

Horst, W. J., N. Schmohl, et al. (1999). Does aluminium affect root growth of maize through interaction with the cell wall-plasma membrane-cytoskeleton continuum? Plant and Soil 215(2): 163-174. {a} Institute of Plant Nutrition, University of Hannover, Herrenhaeuser Str. 2, D-30419, Hannover, Germany

Houba, H. N., C. Pethe, et al. (1999). Cytokinin oxidase from Zea mays: Purification, cDNA cloning and expression in moss protoplasts. Plant Journal 17(6): 615-626. {a} Laboratoire de Biologie Cellulaire INRA, Route de St-Cyr, 78026, Versailles Cedex, France

Howard, S. R., J. D. Hanson, et al. (1999). Nitrogen uptake and partitioning under alternate- and every-furrow irrigation. Plant and Soil 210(1): 11-20. {a} Pasture Systems and Watershed Management Research Laboratory, USDA-ARS, Curtin Road, Building 3702, University Park, PA, 16802, USA

Hu, J. G., X. S. Zhao, et al. (1999). Isolation and characterization of a cDNA encoding maize cytosolic malate dehydrogenase. Acta Botanica Sinica. Jan. 41(1): 40-44. {a} Institute of Genetics, Fudan University, Shanghai, 200433, China

Huang, B. Q., Y. Fu, et al. (1999). Three-dimensional organization and dynamic changes of the actin cytoskeleton in embryo sacs of Zea mays and Torenia fournieri. Protoplasma 209(1-2): 105-119. {a} Department of Botany, University of Hong Kong, Pokfulam Road, Hong Kong, China

Huang, L. and Z. M. Wei (1999). Differences in regeneration capacity between five elite varieties of maize (Zea mays L.) and the DNA differences between embryogenic callus and nonembryogenic callus. Acta Phytophysiologica Sinica 25(4): 332-338. {a} Shanghai Institute of Plant Physiology, Chinese Academy of Sciences, Shanghai, 200032, China

Huang, X. and J. O. Becker (1999). Life cycle and mating behavior of Belonolaimus longicaudatus in gnotobiotic culture. Journal of Nematology. March 31(1): 70-74. {a} Department of Nematology, University of California, Riverside, CA, 92521, USA

Hueros, G., E. Gomez, et al. (1999). Identification of a promoter sequence from the BETL1 gene cluster able to confer transfer-cell-specific expression in transgenic maize. Plant Physiology Rockville. Dec. 121(4): 1143-1152. {a} Max-Planck-Institut fuer Zuechtungsforschung, Carl-von-Linne Weg 10, Koeln, D-50829, Germany

Hueros, G., J. Royo, et al. (1999). Evidence for factors regulating transfer cell-specific expression in maize endosperm. Plant Molecular Biology. Oct. 41(3): 403-414. {a} MPI fuer Zuechtungsforschung, Carl-von-Linne Weg 10, 50829, Koeln, Germany

Hughes, C. A., J. S. Gebhardt, et al. (1999). Identification and expression of a cDNA encoding cystathionine gamma-synthase in soybean. Plant Science Shannon. Aug. 146(2): 69-79. {a} Soybean and Alfalfa Research Laboratory, U.S. Department of Agriculture, Agricultural Research Service, Building 006, Beltsville, MD, 20705, USA

Humara, J. M., M. S. Marin, et al. (1999). Improved efficiency of uidA gene transfer in stone pine (Pinus pinea) cotyledons using a modified binary vector. Canadian Journal of Forest Research. Oct. 29(10): 1627-1632. {a} Departamento Biologia de Organismos y Sistemas, Unidad de Fisiologia Vegetal, Instituto Universitario de Biotecnologia de Asturias-CNB (CSIC), Universidad de Oviedo, C/ Catedratico Rodrigo Uria s/n, E-33071, Oviedo, Asturias, Spain

Hurst, C. D., A. Knight, et al. (1999). PCR detection of genetically modified soya and maize in foodstuffs. Molecular Breeding 5(6): 579-586. {a} School of Chemical and Life Sciences, University of Greenwich, London, SE18 6PF, UK

Hussain, I., K. R. Olson, et al. (1999). Long-term tillage effects on soil chemical properties and organic matter fractions. Soil Science Society of America Journal. Sept. Oct. 63(5): 1335-1341. {a} Dep. of Natural Resources and Environmental Sciences, Univ. of Illinois, 1102 S. Goodwin Ave., Urbana, IL, 61801, USA

Hussain, I., K. R. Olson, et al. (1999). Impacts of tillage and no-till on production of maize and soybean on an eroded Illinois silt loam soil. Soil and Tillage Research. Sept. 52(1-2): 37-49. {a} Department of Natural Resources and Environmental Sciences, University of Illinois, 1102 S. Goodwin Ave., W-401C Turner Hall, Urbana, IL, 61801, USA

Hylander, L. D. and N. Ae (1999). Nutrient distribution around roots of Brachiaria, maize, Sorghum, and upland rice in an Andisol. Soil Science and Plant Nutrition. Sept. 45(3): 617-626. {a} Uppsala University, Norbyvagen 20, Uppsala, S-752 36, Sweden

Ikerra, S. T., J. A. Maghembe, et al. (1999). Soil nitrogen dynamics and relationships with maize yields in a gliricidia-maize intercrop in Malawi. Plant and Soil 211(2): 155-164. {a} Mlingano Soils Research Institute, Tanga, Tanzania

Ilic, N., A. Ostin, et al. (1999). Differential inhibition of indole-3-acetic acid and tryptophan biosynthesis by indole analogues. I. Tryptophan dependent IAA biosynthesis. Plant Growth Regulation 27(1): 57-62. {a} Horticultural Crops Quality Laboratory, Agricultural Research Service, United States Department of Agriculture, Beltsville, MD, 20705-2350, USA

Ingram, G. C., J. L. Magnard, et al. (1999). ZmOCL1, an HDGL2 family homeobox gene, is expressed in the outer cell layer throughout maize development. Plant Molecular Biology. May 40(2): 343-354. {a} Reproduction and Developpement des Plantes, UMR 9938 CNRS/INRA/ENS, Ecole Normale Superieure de Lyon, Lyon, France

Inouhe, M., K. Hayashi, et al. (1999). Polypeptide characteristics and immunological properties of exo- and endoglucanases purified from maize coleoptile cell walls. Journal of Plant Physiology. March 154(3): 334-340. {a} Department of Biology and Earth Sciences, Faculty of Science, Ehime University, Matsuyama, 790-8577, Japan

Ionenko, I. F. and A. A. Zyalalov (1999). Effect of potassium, and abscisic and indole-3-acetic acids, on maize root xylem exudation and potassium efflux. Biologia Plantarum Prague 42(1): 137-141. {a} Kazan Scientific Centre of Russia Academy of Sciences, Institute of Biochemistry and Biophysics, Kazan, 420503, Russia

Irving, H. R., G. Dyson, et al. (1999). Effects of exogenously applied jasmonates on growth and intracellular pH in maize coleoptile segments. Journal of Plant Growth Regulation. Spring 18(2): 93-100. {a} Department of Pharmaceutical Biology and Pharmacology, Victorian College of Pharmacy, Monash University, 381 Royal Parade, Parkville Campus, Melbourne, Victoria, 3052, Australia

Isaacs, C. and D. Mycock (1999). Ultrastructural effects of early imbibition and cryostorage on Zea mays L. root meristems. Cryo Letters. May June 20(3): 183-192. {a} Department of Botany, University of the Witwatersrand, WITS 2050, Johannesburg, South Africa

Itnyre, R. L. C., A. C. J. D, et al. (1999). Reaction of sweet corn to inoculation with barley yellow dwarf virus RMV-IL. Plant Disease. June 83(6): 566-568. {a} Department of Crop Sciences, University of Illinois, Urbana, IL, 61801, USA

Jackson, B. P., W. P. Miller, et al. (1999). Trace element solubility from land application of fly ash/organic waste mixtures. Journal of Environmental Quality 28(2): 639-647. {a} Savannah River Ecology Lab., Univ. of Georgia, Advanced Analytical Center for Environ. Sci., Aiken, SC, 29802, USA

Jame, Y. W., H. W. Cutforth, et al. (1999). Temperature response function for leaf appearance rate in wheat and corn. Canadian Journal of Plant Science 79(1): 1-10. {a} Semiarid Prairie Agricultural Research Center, Research Branch, Agriculture and Agri-Food Canada, Swift Current, SK, S9H 3X2, Canada

Janardhana, G. R., K. A. Raveesha, et al. (1999). Mycotoxin contamination of maize grains grown in Karnataka (India). Food and Chemical Toxicology. Aug. 37(8): 863-868. {a} Department of Studies in Botany, University of Mysore, Manasagangotri, Mysore, KRN, 570006, India

Janda, T., G. Szalai, et al. (1999). The thermoluminescence 'afterglow' band as a sensitive indicator of abiotic stresses in plants. Zeitschrift fuer Naturforschung Section C Journal of Biosciences. Sept. Oct. 54(9-10): 629-633. {a} Agricultural Research Institute of the Hungarian Academy of Sciences, H-2462, Martonvasar, Hungary

Janda, T., G. Szalai, et al. (1999). Hydroponic treatment with salicylic acid decreases the effects of chilling injury in maize (Zea mays L.) plants. Planta Berlin. April 208(2): 175-180. {a} Agricultural Research Institute of the Hungarian Academy of Sciences, H-2462, Martonvasar, Hungary

Jannasch, R. W. and R. C. Martin (1999). The potential for capturing the forage yield of white lupin by intercropping with cereals. Biological Agriculture and Horticulture 17(2): 113-130. {a} Plant Science Department, Nova Scotia Agricultural College, Truro, NS, Canada

Jannasch, R. W. and R. C. Martin (1999). The potential for capturing the forage yield of white lupin by intercropping with cereals. Biological Agriculture and Horticulture 17(2): 113-130. {a} Plant Science Department, Nova Scotia Agricultural College, Truro, NS, Canada

Jara, J. and C. O. Stockle (1999). Simulation of water uptake in maize, using different levels of process detail. Agronomy Journal. March April 91(2): 256-265. {a} Dep. of Biological Systems Engineering, Washington State Univ., Pullman, WA, 99164-6120, USA

Jarausch, W. B., B. Mocquot, et al. (1999). Absorption and translocation of sludge-borne zinc in field-grown maize (Zea mays L.). European Journal of Agronomy. June 11(1): 23-33. {a} INRA, Unite d'Agronomie, Centre de Recherche de Bordeaux, F-33883, Villenave d'Ornon, France

Jaynes, D. B. and J. G. Miller (1999). Evaluation of the Root Zone Water Quality Model using data from the Iowa MSEA. Agronomy Journal. March April 91(2): 192-200. {a} National Soil Tilth Lab., ARS, USDA, 2150 Pammel Dr., Ames, IA, 50011, USA

Jerzykiewicz, J., M. Konieczna, et al. (1999). Nitrate reductase inactivator from Spirodela polyrhiza (L.) Schleiden. Acta Physiologiae Plantarum 21(4): 433-441. {a} Plant Physiology Department, Institute of Botany, Wroclaw University, Kanonia 6/8, 50-238, Wroclaw, Poland

Ji, Y., D. M. Stelly, et al. (1999). A candidate recombination modifier gene for Zea mays L. Genetics 151(2): 821-830. {a} Tex. A and M Univ., 313 Horticulture Build., College Station, TX 77843-2135, USA

Jian, L. c., J. h. Li, et al. (1999). Cytochemical localization of calcium and Ca2+-ATPase activity in plant cells under chilling stress: A comparative study between the chilling-sensitive maize and the chilling-insensitive winter wheat. Plant and Cell Physiology. Oct. 40(10): 1061-1071. {a} Laboratory of Plant Hardiness, Department of Horticultural Science, University of Minnesota, Saint Paul, MN, 55108, USA

Johnson, A. D., M. L. Cabrera, et al. (1999). LEACHN simulations of nitrogen dynamics and water drainage in an ultisol. Agronomy Journal. July Aug 91(4): 597-606. {a} Crop and Soil Sciences, Univ. of Georgia, Plant Sciences Bldg., Athens, GA, 30602, USA

Johnson, A. W., N. A. Minton, et al. (1999). Managing nematodes, fungal diseases, and thrips on peanut with pesticides and crop rotations of bahiagrass, corn, and cotton. Peanut Science. Jan. June 29(1): 32-39. {a} Coastal Plain Exp. Stn., USDA-ARS, Tifton, GA, 31793-0748, USA

Johnson, A. W., D. R. Sumner, et al. (1999). Effects of a resistant corn hybrid and fenamiphos on Meloidogyne incognita in a corn-squash rotation. Journal of Nematology. June 31(2): 184-190. {a} USDA ARS, Coastal Plain Station, Tifton, GA, 31793, USA

Jones, P. R., M. B. Lindberg, et al. (1999). The UDP-glucose:p-hydroxymandelonitrile-O-glucosyltransferase that catalyzes the last step in synthesis of the cyanogenic glucoside dhurrin in Sorghum bicolor: Isolation, cloning, heterologous expression, and substrate specificity. Journal of Biological Chemistry. Dec. 274(50): 35483-35491. {a} Plant Biochemistry Laboratory, Department of Plant Biology, Royal Veterinary and Agricultural University, 40 Thorvaldensvej, DK-1871, Frederiksberg C, Copenhagen, Denmark

Jordan, N. (1999). Fitness effects of the triazine resistance mutation in Amaranthus hybridus: Relative fitness in maize and soyabean crops. Weed Research. Dec. 39(6): 493-505. {a} Department of Agronomy and Plant Genetics, Minnesota Center for Community Genetics, 1991 Buford Circle, Saint Paul, MN, 55108, USA

Kabir, Z., H. I. P. O, et al. (1999). Combined effects of soil disturbance and fallowing on plant and fungal components of mycorrhizal corn (Zea mays L.). Soil Biology and Biochemistry 31(2): 307-314. {a} Department of Horticulture, The Pennsylvania State University, 102 Tyson Building, University Park, PA, 16802, USA

Kagata, H., N. Inoue, et al. (1999). Yield, feeding value and chemical composition of soil in a rotation cropping system of maize - Barley as influenced by barnyard manure and chemical fertilizer. Grassland Science. April 45(1): 42-51. {a} Faculty of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan

Kaldorf, M., A. J. Kuhn, et al. (1999). Selective element deposits in maize colonized by a heavy metal tolerance conferring arbuscular mycorrhizal fungus. Journal of Plant Physiology. May 154(5-6): 718-728. {a} Botanisches Institut der Universitaet zu Koeln, Gyrhofstr. 15, D-50923, Koeln, Germany

Kamprath, E. J. (1999). Changes in phosphate availability of Ultisols with long-term cropping. Communications in Soil Science and Plant Analysis. April 30(7-8): 909-919. {a} Soil Science Department, North Carolina State University, Raleigh, NC, 27695, USA

Kang, M. S., A. K. Din, et al. (1999). Combining ability for rind puncture resistance in maize. Crop Science 39(2): 368-371. {a} Dep. of Agronomy, Louisiana Agric. Exp. Stn., Louisiana State Univ. Agric. Ctr., Baton Rouge, LA, 70803-2110, USA

Kaniuga, Z., V. Saczynska, et al. (1999). Changes in fatty acids of leaf polar lipids during chilling and post-chilling rewarming of Zea mays genotypes differing in response to chilling. Acta Physiologiae Plantarum 21(3): 231-241. {a} Institute of Biochemistry, University of Warsaw, Al. Zwirki i Wigury 93, 02-089, Warszawa, Poland

Kaniuga, Z., V. Saczynska, et al. (1999). The fatty acid composition of phosphatidylglycerol and sulfoquinovosyldiacylglycerol of Zea mays genotypes differing in chilling susceptibility. Journal of Plant Physiology. Feb. 154(2): 256-263. {a} Institute of Biochemistry, University of Warsaw, Al. Zwirki i Wigury 93, 02-089, Warszawa, Poland

Kaniuga, Z., V. Saczynska, et al. (1999). Degradation of leaf polar lipids during chilling and post-chilling rewarming of Zea mays genotypes reflects differences in their response to chilling stress. The role of galactolipase. Acta Physiologiae Plantarum 21(1): 45-56. {a} Institute of Biochemistry, University of Warsaw, Al. Zwirki i Wigury 93, 02-089, Warszawa, Poland

Karcz, W., H. Luethen, et al. (1999). Effect of IAA and 4-Cl-IAA on growth rate in maize coleoptile segments. Acta Physiologiae Plantarum 21(2): 133-139. {a} Faculty of Biology, Dept. of Plant Physiology, University of Silesia, ul. Jagiellonska 28, PL-40032, Katowice, Poland

Karim, M. A., Y. Fracheboud, et al. (1999). Photosynthetic activity of developing leaves of Zea mays is less affected by heat stress than that of developed leaves. Physiologia Plantarum. April 105(4): 685-693. {a} Okinawa Subtropical Station, Japan International Research Center for Agricultural Sciences, 1091-1 Maesato, Ishigaki, Okinawa, 907, Japan

Kato, A. (1999). Air drying method using nitrous oxide for chromosome counting in maize. Biotechnic and Histochemistry. May 74(3): 160-166. {a} University of Missouri, Tucker Hall, Columbia, MO, 65211-7400, USA

Kato, A. (1999). Single fertilization in maize. Journal of Heredity 90(2): 276-280. {a} University of Missouri, Tucker Hall, Columbia, MO, 65211-7400, USA

Kato, A. (1999). Induction of bicellular pollen by trifluralin treatment and occurrence of triploids and aneuploids after fertilization in maize. Genome 42(1): 154-157. {a} University of Missouri, 309 Tucker Hall, Columbia, MO, 65211-7020, USA

Kato, N. H. (1999). Effect of light-irradiation on allelopathic potential of germinating maize. Phytochemistry Oxford. Nov. 52(6): 1023-1027. {a} Department of Biochemistry and Food Science, Faculty of Agriculture, Kagawa University, Miki, Kagawa, 761-0795, Japan

Kato, N. H., T. Kori, et al. (1999). Effects of flooding and anoxia on activities of alcohol dehydrogenase and lactate dehydrogenase in maize seedlings. Environment Control in Biology. Sept. 37(3): 211-217. {a} Department of Biochemistry and Food Science, Faculty of Agriculture, Kagawa University, Miki-cho, Takamatsu-shi, Kagawa, 761-0795, Japan

Kato, N. H., S. Kosemura, et al. (1999). A new inhibitor of auxin-induced growth, 5-chloro-6-methoxy-2-benzoxazolinone, from light-grown shoots of maize seedlings. Journal of Plant Physiology 154(1): 102-105. {a} Department of Biochemistry and Food Science, Faculty of Agriculture, Kagawa University, Miki-cho, Kagawa, 761-0795, Japan

Kegode, G. O., F. Forcella, et al. (1999). Influence of crop rotation, tillage, and management inputs on weed seed production. Weed Science. March April 47(2): 175-183. {a} Plant Sciences Department, North Dakota State University, Fargo, ND, 58105-5051, USA

Kennedy, L. J., J. C. Stutz, et al. (1999). Glomus eburneum and G. luteum, two new species of arbuscular mycorrhizal fungi, with emendation of G. spurcum. Mycologia . Nov. Dec. 91(6): 1083-1093. {a} Department of Plant Biology, Arizona State University, Temple, AZ, 85287-1601, USA

Kessavalou, A. and D. T. Walters (1999). Winter rye cover crop following soybean under conservation tillage: Residual soil nitrate. Agronomy Journal. July Aug 91(4): 643-649. {a} Dep. of Agronomy, Univ. of Nebraska-Lincoln, Lincoln, NB, 68583-0915, USA

Khalifa, K. and A. Zidan (1999). Effect of nitrate addition on efficient use of ammonium sulfate fertilizer on corn under saline conditions. I. Pot experiment. Communications in Soil Science and Plant Analysis. Sept. 30(15-16): 2145-2156. {a} Agricultural Department, Syrian Atomic Energy Commission, Damascus, Syria

Khatun, F., S. Begum, et al. (1999). Correlation coefficient and path analysis of some maize (Zea mays L.) hybrids. Bangladesh Journal of Botany. June 28(1): 9-15. {a} Breeding Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, 1701, Bangladesh

Khola, O. P. S., R. K. Dube, et al. (1999). Conservation and production ability of maize (Zea mays)-legume intercropping systems under varying dates of sowing. Indian Journal of Agronomy. March 44(1): 40-46. {a} Central Soil and Water Conservation Research and Training Institute, Dehra Dun, UP, 248 195, India

Kidwell, M. G. and e. M. B. Evgen (1999). How valuable are model organisms for transposable element studies? Genetica Dordrecht. [print] 107(1-3): 103-111. {a} Department of Ecology and Evolutionary Biology, The University of Arizona, 116 BSW Building, Tucson, AZ, 85721, USA

Kim, K. N. and M. J. Guiltinan (1999). Identification of cis-acting elements important for expression of the starch-branching enzyme I gene in maize endosperm. Plant Physiology Rockville. Sept. 121(1): 225-236. {a} Intercollege Graduate Program in Plant Physiology, The Biotechnology Institute and Department of Horticulture, The Pennsylvania State University, University Park, PA, 16802, USA

Kingston, S. A. H., J. Harbinson, et al. (1999). Acclimation of photosynthesis, H2O2 content and antioxidants in maize (Zea mays) grown at sub-optimal temperatures. Plant Cell and Environment. Sept. 22(9): 1071-1083. {a} Biochemistry and Physiology Department, IACR-Rothamsted, Harpenden, Herts, AL5 2JQ, UK

Kisselle, K. W., C. J. Garrett, et al. (1999). Method for 14C-labeling maize field plots and assessment of label uniformity within plots. Communications in Soil Science and Plant Analysis. June 30(11-12): 1759-1771. {a} Biology Department, Hall-Atwater Labs, Wesleyan University, Middletown, CT, 06459, USA

Kitchen, N. R., K. A. Sudduth, et al. (1999). Soil electrical conductivity as a crop productivity measure for claypan soils. Journal of Production Agriculture. Oct. Dec. 12(4): 607-617. {a} ARS Cropping Syst. and Water Quality Res. Unit, USDA, Columbia, MO, 65211, USA

Kleinman, K. (1999). His own synthesis: Corn, Edgar Anderson, and evolutionary theory in the 1940s. Journal of the History of Biology. Fall 32(2): 293-320. {a} Missouri Botanical Garden and Philosophy Department, Webster University, 470 East Lockwood Avenue, Saint Louis, MO, 63119, USA

Knutson, R. J., B. E. Hibbard, et al. (1999). Comparison of screening techniques for western corn rootworm (Coleoptera: Chrysomelidae) host-plant resistance. Journal of Economic Entomology. June 92(3): 714-722. {a} Department of Entomology, University of Missouri, 1-87 Agriculture Building, Columbia, MO, 65211, USA

Kochubei, S. M., G. I. Kufrik, et al. (1999). Characteristics of light fragments from different thylakoid regions of maize mesophyll. Fiziologiya Rastenii Moscow. July Aug 46(4): 567-573.

Kohler, K. A., M. Ghaffarzadeh, et al. (1999). Planting method and fertilization timing effects on ridge-till corn. Journal of the Iowa Academy of Science 106(1): 15-20. {a} National Soil Tilth Laboratory, USDA/ARS, 2150 Pammel Dr., Ames, IA, 50011, USA

Kolberg, R. L., D. G. Westfall, et al. (1999). Influence of cropping intensity and nitrogen fertilizer rates on in situ nitrogen mineralization. Soil Science Society of America Journal 63(1): 129-134. {a} USDA-ARS, 1500 N. Central Ave., Sidney, MT, 59270, USA

Kolesnichenko, A. V., E. A. Ostroumova, et al. (1999). The comparison of proteins with immunochemical affinity to stress protein 310 kD in cytoplasmatic proteins of winter rye, winter wheat, Elymus and maize. Journal of Thermal Biology. Aug. 24(4): 211-215. {a} Siberian Institute of Plant Physiology and Biochemistry, Siberian Division of Russian Academy of Sciences, Irkutsk, Irkutsk-33, 664033, Russia

Konstantinov, Y. M., I. Y. Subota, et al. (1999). Effect of gluathione redox system on the translational activity of maize Zea mays mitochondria. Doklady Akademii Nauk. May 365(1): 126-128.

Kornerova, M. and D. Hola (1999). The effect of low growth temperature on Hill reaction and photosystem 1 activities and pigment contents in maize inbred lines and their F1 hybrids. Photosynthetica Prague 37(3): 477-488. {a} Department of Genetics and Microbiology, Faculty of Science, Charles University, Vinicna 5, CZ-128 44, Praha, 2, Czech Republic

Koscielniak, J. and K. J. Biesaga (1999). Effects of exposure to short periods of suboptimal temperature during chill (5degreeC) on gas exchange and chlorophyll fluorescence in maize seedlings (Zea Mays L.). Journal of Agronomy and Crop Science. Nov. 183(4): 231-241. {a} Chair of Plant Physiology, Faculty of Agriculture, University of Agriculture, Podluzna 3, 30-239, Krakow, Poland

Kosegarten, H., F. Grolig, et al. (1999). Effects of NH4+, NO3- and HCO3- on apoplast pH in the outer cortex of root zones of maize, as measured by the fluorescence ratio of fluorescein boronic acid. Planta Berlin. Oct. 209(4): 444-452. {a} Institut fuer Pflanzenernaehrung, Justus-Liebig Universitaet Giessen, Suedanlage 6, D-35390, Giessen, Germany

Kranz, E. and J. Kumlehn (1999). Angiosperm fertilisation, embryo and endosperm development in vitro. Plant Science Shannon. March 142(2): 183-197. {a} Centre for Applied Plant Molecular Biology, AMP II, Institute for General Botany, University of Hamburg, Ohnhorststr. 18, D-22609, Hamburg, Germany

Krausz, R. F., G. Kapusta, et al. (1999). Evaluation of glufosinate-resistant corn (Zea mays) and glufosinate: Efficacy on annual weeds. Weed Technology. Oct. Dec. 13(4): 691-696. {a} Department of Plant, Soil, and General Agriculture, Southern Illinois University, Carbondale, IL, 62901, USA

Krech, A. B., D. Wulff, et al. (1999). Plant chromosomal HMGI/Y proteins and histone H1 exhibit a protein domain of common origin. Gene Amsterdam. April 230(1): 1-5. {a} Institut fuer Biologie III, Albert-Ludwigs-Universitaet Freiburg, Schaenzlestr. 1, D-79104, Freiburg, Germany

Krishnan, H. B. (1999). Characterization of high-lysine mutants of rice. Crop Science. May June 39(3): 825-831. {a} Dep. of Plant Pathology, Univ. of Missouri, Columbia, MO, 65211, USA

Kriventseva, E. V. and M. S. Gelfand (1999). Statistical analysis of the exon-intron structure of higher and lower eukaryote genes. Journal of Biomolecular Structure and Dynamics. Oct. 17(2): 281-288. {a} V.A. Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov str. 32, Moscow, 117984, Russia

Kumar, A., M. G. Gangashetti, et al. (1999). Analysis of direct and indirect effects for quantitative traits in diallel crosses of maize (Zea mays). Annals of Biology Hissar. Dec. 15(2): 173-176. {a} Department of Genetics, CCS Haryana Agricultural University, Hisar, India

Kumar, A., R. S. Kanwar, et al. (1999). Evaluation of the root zone water quality model for predicting water and NO3-N movement in an Iowa soil. Soil and Tillage Research. May 50(3-4): 223-236. {a} Komex H2O Science, 5500 Bolsa Ave., Suite 105, Huntington Beach, CA, G26YG, USA

Kumar, M. V. N., K. S. Sudheer, et al. (1999). Combining ability studies for oil improvement in maize (Zea mays L.). Crop Research Hisar. July 18(1): 93-99. {a} Department of Genetics and Plant Breeding, College of Agriculture, Rajendranagar, Hyderabad, AP, India

Kumar, S. N. and C. P. Singh (1999). Yield and yield components of maize (Zea mays L.): Physiological analysis on seasonal variations. Indian Journal of Plant Physiology. April June 4(2): 90-94. {a} Division of Plant Physiology, Biochemistry and Post-harvest Technology, Central Plantation Crops Research Institute, Kasaragod, 671 124, India

Kumar, T. V. and V. S. Singh (1999). Genetic variability studies for baby corn in maize (Zea mays L.). Agricultural Science Digest. March 19(1): 67-71. {a} Dept. of Genetics and Plant Breeding, G.B.P.U.A and T., Pantnagar, 263 145, India

Kurilich, A. C. and J. A. Juvik (1999). Quantification of carotenoid and tocopherol antioxidants in Zea mays. Journal of Agricultural and Food Chemistry. May 47(5): 1948-1955. {a} Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana, IL, 61801, USA

Kurotani, K. i., S. Hata, et al. (1999). Light-regulated expression of the gene for C4-form phosphoenolpyruvate carboxylase in maize: Destabilization of mRNA by okadaic acid. Plant and Cell Physiology. April 40(4): 423-430. {a} Laboratory of Plant Physiology, Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan

Kutik, J., M. Kocova, et al. (1999). The development of chloroplast ultrastructure and Hill reaction activity during leaf ontogeny in different maize (Zea mays L.) genotypes. Photosynthetica Prague 36(4): 497-507. {a} Department of Plant Physiology, Faculty of Sciences, Charles University, Vinicna 5, CZ-128 44, Praha, 2, Czech Republic

Kwesiga, F. R., S. Franzel, et al. (1999). Sesbania sesban improved fallows in eastern Zambia: Their inception, development and farmer enthusiasm. Agroforestry Systems 47(1-3): 49-66. {a} SADC-ICRAF Agroforestry Research Project, Mount Pleasant, Harare, Zimbabwe

Kyetere, D. T., R. Ming, et al. (1999). Genetic analysis of tolerance to maize streak virus in maize. Genome 42(1): 20-26. {a} Department of Horticulture and Crop Science, The Ohio State University - Ohio Agricultural Research and Development Center, 1680 Madison Avenue, Wooster, OH, 44691, USA

Laabs, V., W. Amelung, et al. (1999). Multi-residue analysis of corn and soybean pesticides in Brazilian oxisols using gas chromatography and mass selective detection. Journal of Environmental Quality. Nov. Dec. 28(6): 1778-1786. {a} Institute of Soil Science and Soil Geography, Univ. of Bayreuth, 95440, Bayreuth, Germany

Labate, J. A., K. R. Lamkey, et al. (1999). Temporal changes in allele frequencies in two reciprocally selected maize populations. Theoretical and Applied Genetics. Nov. 99(7-8): 1166-1178. {a} Department of Agronomy, USDA-ARS, Iowa State University, Ames, IA, USA

Laboure, A. M., A. Faik, et al. (1999). RGD-dependent growth of maize calluses and immunodetection of an integrin-like protein. FEBS Letters 442(2-3): 123-128. {a} Lab. Genet. Mol. Plantes, UMR CNRS 5575, Univ. Joseph Fourier, CERMO, P.O. Box 53X, F-38041 Grenoble, France

Lal, S., J. H. Choi, et al. (1999). The AG dinucleotide terminating introns is important but not always required for pre-mRNA splicing in the maize endosperm. Plant Physiology Rockville. May 120(1): 65-72. {a} Program in Plant Molecular and Cellular Biology and Horticultural Sciences, University of Florida, 1143 Fifield Hall, Gainesville, FL, 32611-0690, USA

Landa, F. M., N. R. Fausey, et al. (1999). Plant production model evaluation for the Root Zone Water Quality Model (RZWQM 3.2) in Ohio. Agronomy Journal. March April 91(2): 220-227. {a} ARS Soil Drainage Res. Unit, USDA, Ohio State Univ., 590 Woody Hayes Dr., Columbus, OH, 43210, USA

Landi, P., E. Frascaroli, et al. (1999). Genetic variability for resistance to trifluralin in Zea mays. Weed Science. July Aug 47(4): 369-374. {a} Dipartimento di Agronomia, Universita' di Bologna, Via Filippo Re 6, 40126, Bologna, Italy

Larson, E. J. and M. D. Clegg (1999). Using corn maturity to maintain grain yield in the presence of late-season drought. Journal of Production Agriculture. July Sept 12(3): 400-405. {a} Dep. of Agronomy, Univ. of Nebraska, Lincoln, NE, 68583-0817, USA

Larson, S. L., R. P. Jones, et al. (1999). Classification of explosives transformation products in plant tissue. Environmental Toxicology and Chemistry. June 18(6): 1270-1276. {a} Waterways Experiment Station, Environmental Chemistry Branch, U.S. Army Corps of Engineers, 3909 Halls Ferry Road, Vicksburg, MS, 39180-6199, USA

Larson, S. R. and V. Raboy (1999). Linkage mapping of maize and barley myo-inositol 1-phosphate synthase DNA sequences: Correspondence with a low phytic acid mutation. Theoretical and Applied Genetics. July 99(1-2): 27-36. {a} Forage and Range Research Laboratory, USDA-Agric Res Service, Utah State University, 700 North 1100 East, Logan, UT, 84322-6300, USA

Lauer, J. and J. Wedberg (1999). Grain yield of initial Bt corn hybrid introductions to farmers in the Northern Corn Belt. Journal of Production Agriculture. July Sept 12(3): 373-376. {a} Dep. of Agronomy, Univ. of Wisconsin, 1575 Linden Dr., Madison, WI, 53706, USA

Lauer, J. G., P. R. Carter, et al. (1999). Corn hybrid response to planting date in the northern Corn Belt. Agronomy Journal. Sept. Oct. 91(5): 834-839. {a} Dep. of Agronomy, Univ. of Wisconsin-Madison, 1575 Linden Dr., Madison, WI, USA

Lauren, D. R. and M. M. E. Di (1999). Fusaria and Fusarium mycotoxins in leaves and ears of maize plants 2. A time course study made in the Waikato region, New Zealand, in 1997. New Zealand Journal of Crop and Horticultural Science. Sept. 27(3): 215-223. {a} Ruakura Research Centre, Horticulture and Food Research Institute of New Zealand Ltd, Hamilton, New Zealand

Laurenzi, M., G. Rea, et al. (1999). De-etiolation causes a phytochrome-mediated increase of polyamine oxidase expression in outer tissues of the maize mesocotyl: A role in the photomodulation of growth and cell wall differentiation. Planta Berlin. April 208(2): 146-154. {a} Dipartimento di Biologia, Universita degli Studi "Roma Tre", Viale Guglielmo Marconi 446, I-00146, Rome, Italy

Laurie, J. D., G. Zhang, et al. (1999). A novel technique for the partial isolation of maize embryo sacs and subsequent regeneration of plants. In Vitro Cellular and Developmental Biology Plant. July Aug 35(4): 320-325. {a} Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada

Leipner, J., Y. Fracheboud, et al. (1999). Effect of growing season on the photosynthetic apparatus and leaf antioxidative defenses in two maize genotypes of different chilling tolerance. Environmental and Experimental Botany. Oct. 42(2): 129-139. {a} Institute of Plant Sciences, Swiss Federal Institute of Technology, Universitatstrasse 2, 8092, Zurich, Switzerland

Leipner, J., A. Stehli, et al. (1999). Photosynthetic performance of exotic maize (Zea mays L.) germplasm from tropical highlands at low and high temperature. Journal of Applied Botany. May 73(1-2): 20-24. {a} Institute of Plant Sciences, Swiss Federal Institute of Technology Zurich, Eschikon 33, CH-8315, Lindau, Switzerland

Lekasi, J. K., M. A. Bekunda, et al. (1999). Decomposition of crop residues in banana-based cropping systems of Uganda. Biological Agriculture and Horticulture 17(1): 1-10. {a} National Agricultural Research Centre, KARI, Muguga, Nairobi, Kenya

Lesoing, G. W. and C. A. Francis (1999). Strip intercropping effects on yield and yield components of corn, grain sorghum, and soybean. Agronomy Journal. Sept. Oct. 91(5): 807-813. {a} Univ. of Missouri, 108 W. North Main, Richmond, MO, USA

Lesoing, G. W. and C. A. Francis (1999). Strip intercropping of corn-soybean in irrigated and rainfed environments. Journal of Production Agriculture. April June 12(2): 187-192. {a} Univ. of Missouri Ext., 108 W. North Main, Richmond, MO, 64085, USA

Li, H. Y. and C. L. Foy (1999). A biochemical study of BAS 517 using excised corn and soybean root systems. Weed Science 47(1): 28-36. {a} Dep. Plant Pathol. Physiol. Weed Sci., Virginia Polytechnic Inst. State Univ., Blacksburg, VA 24061-0331, USA

Li, L., S. Yang, et al. (1999). Interspecific complementary and competitive interactions between intercropped maize and faba bean. Plant and Soil 212(2): 105-114. {a} Department of Plant Nutrition, China Agricultural University, Beijing, 100094, China

Li, M. and G. Zhang (1999). Effects of paclobutrazol on the morphology, structure, and chlorophyll content of regenerated plantlets of maize. Israel Journal of Plant Sciences 47(2): 85-88. {a} Dept. of Vegetable Crops, Volcani Center, ARO, Bet Dagan, 50250, Israel

Li, P., K. Matsunaga, et al. (1999). Enhancement of the nerve growth factor-mediated neurite outgrowth from PC12D cells by Chinese and Paraguayan medicinal plants. Biological and Pharmaceutical Bulletin. July 22(7): 752-755. {a} Department of Pharmaceutical Molecular Biology, Faculty of Pharmaceutical Sciences, Tohoku University, Aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan

Lidon, F. C., M. G. Barreiro, et al. (1999). Effects of aluminum toxicity on nutrient accumulation in maize shoots: Implications on photosynthesis. Journal of Plant Nutrition 22(2): 397-416. {a} Plant Biol. Unit, Fac. Cienc. y Tecnol., Univ. Nova de Lisboa, 2825 Monte da Caparica, Portugal

Lima, G. F. d. C., L. E. Sollenberger, et al. (1999). Nitrogen fertilization and supplementation effects on performance of beef heifers grazing limpograss. Crop Science. Nov. Dec. 39(6): 1853-1858. {a} Agronomy Dep., Univ. of Florida, Gainesville, FL, 32611-0300, USA

Lindquist, J. L. and D. A. Mortensen (1999). Ecophysiological characteristics of four maize hybrids and Abutilon theophrasti. Weed Research. Aug. 39(4): 271-285. {a} Department of Agronomy, University of Nebraska-Lincoln, Lincoln, NE, 68583-0817, USA

Lindquist, J. L., D. A. Mortensen, et al. (1999). Stability of corn (Zea mays)-foxtail (Setaria spp.) interference relationships. Weed Science. March April 47(2): 195-200. {a} Department of Agronomy, University of Nebraska, Lincoln, NB, 68583-0915, USA

Lindroth, A. M., R. Gronroos, et al. (1999). Ubiquitous and tissue-specific gus expression in transgenic roots conferred by six different promoters in one coniferous and three angiosperm species. Plant Cell Reports. June 18(10): 820-828. {a} Department of Forest Genetics, Division of Forest Tree Cell Biology, Swedish University of Agricultural Sciences, S-75007, Uppsala, Sweden

Liu, H., M. I. Boulton, et al. (1999). Maize streak virus coat protein is karyophyllic and facilitates nuclear transport of viral DNA. Molecular Plant Microbe Interactions. Oct. 12(10): 894-900. {a} Department of Virus Research, John Innes Centre, Colney Lane, Norwich, NR4 7UH, UK

Logsdon, S. D., T. C. Kaspar, et al. (1999). Depth-incremental soil properties under no-till or chisel management. Soil Science Society of America Journal 63(1): 197-200. {a} National Soil Tilth Laboratory, USDA ARS, 2150 Pammel Dr., Ames, IA, 50011, USA

Lopez, A. R., S. Yamada, et al. (1999). Comparison of sodium uptake by and transport in detached plant parts among several crops. Soil Science and Plant Nutrition. Sept. 45(3): 659-668. {a} The United Graduate School of Agriculture Science, Tottori University, Tottori, 680-8553, Japan

Lopez, E. M., M. J. L. Hernandez, et al. (1999). Biological differences between five populations of fall armyworm (Lepidoptera: Noctuidae) collected from corn in Mexico. Florida Entomologist. June 82(2): 254-262. {a} Centro Universitario de Investigacion y Desarrollo Agropecuario, Universidad de Colima, Tecoman, Colima, C.P. 28100, Mexico

Lopez, R. I. and P. Puigdomenech (1999). Structure, organization and expression of the eukaryotic translation initiation factor 5, eIF-5, gene in Zea mays. Gene Amsterdam. Nov. 240(2): 355-359. {a} Departament de Genetica Molecular, Institut de Biologia Molecular de Barcelona, CID-CSIC, Jordi Girona, 18, 08034, Barcelona, Spain

Lowenberg, D. J. and A. Aghib (1999). Average returns and risk characteristics of site specific P and K management: Eastern corn belt on-farm trial results. Journal of Production Agriculture. April June 12(2): 276-282. {a} Dep. of Agric. Economics, Purdue Univ., West Lafayette, IN, 47907, USA

Lozzia, G. C. (1999). Biodiversity and structure of ground beetle assemblages (Coleoptera Carabidae) in Bt corn and its effects on non target insects. Bollettino di Zoologia Agraria e di Bachicoltura 31(1): 37-58. {a} Istituto di Entomologia Agraria, Universita degli Studi di Milano, Via Celoria 2, 20133, Milano, Italy

Lu, Z. and P. M. Neumann (1999). Low cell-wall extensibility can limit maximum leaf growth rates in rice. Crop Science. Jan. Feb. 39(1): 126-130. {a} Plant Physiol. Lab., Lowdermilk Fac. Agric. Eng., Technion Israel Inst. Technol., Haifa 32000, Israel

Lucretti, S., L. Nardi, et al. (1999). Bivariate flow cytometry DNA/BrdUrd analysis of plant cell cycle. Methods in Cell Science 21(2-3): 155-166. {a} Department INN, Biotechnology and Agriculture Division, ENEA Casaccia Research Centre, Via Anguillarese 301, 00060, Santa Maria di Galeria (Rome), Italy

Lukens, L. N. and J. Doebley (1999). Epistatic and environmental interactions for quantitative trait loci involved in maize evolution. Genetical Research. Dec. 74(3): 291-302. {a} Department of Genetics, University of Wisconsin, 445 Henry Mall, Madison, WI, 53706, USA

Lusser, A., A. Eberharter, et al. (1999). Analysis of the histone acetyltransferase B complex of maize embryos. Nucleic Acids Research. Nov. 27(22): 4427-4435. {a} Department of Microbiology, Medical School, University of Innsbruck, Fritz-Pregl-strasse 3, A-6020, Innsbruck, Austria

Lusso, M. F. G. and S. F. Pascholati (1999). Activity and isoenzymatic pattern of soluble peroxidases in maize tissues after mechanical injury or fungal inoculation. Summa Phytopathologica. July Sept 25(3): 244-249. {a} Laboratorio de Fisiologia e Bioquimica Fitopatologica, Departamento de Entomologia, Fitopatologia e Zoologia Agricola, ESALQ/USP, CEP 13.418-900, Piracicaba, SP, Brazil

Luxova, M. and O. Gasparikova (1999). The effect of low temperature on root respiration in maize. Biologia Bratislava. Aug. 54(4): 453-458. {a} Institute of Botany, Slovak Academy of Sciences, Dubravska cesta 14, SK-84223, Bratislava, Slovakia

Lynch, R. E., B. R. Wiseman, et al. (1999). Evaluation of transgenic sweet corn hybrids expressing CryIA(b) toxin for resistance to corn earworm and fall armyworm (Lepidoptera: Noctuidae). Journal of Economic Entomology 92(1): 246-252. {a} Insect Biol. Popul. Management Res. Lab., USDA-ARS, Tifton, GA 31793-0748, USA

Ma, B. L. and L. M. Dwyer (1999). Within plot variability in available soil mineral nitrogen in relation to leaf greenness and yield. Communications in Soil Science and Plant Analysis. July 30(13-14): 1919-1928. {a} Eastern Cereal and Oilseed Research Centre (ECORC), Central Experimental Farm, Research Branch, Agriculture and Agri-Food Canada, Ottawa, Ontario, Canada

Ma, B. L., L. M. Dwyer, et al. (1999). Soil nitrogen amendment effects on nitrogen uptake and grain yield of maize. Agronomy Journal. July Aug 91(4): 650-656. {a} Research Branch, Central Exp. Farm, Eastern Cereal and Oilseed Res. Ctr. (ECORC), Agric. and Agri-Food Canada, Ottawa, ON, K1A 0C6, Canada

Ma, H., R. H. Busch, et al. (1999). Agronomic performance of lines derived from anther culture, maize pollination and single-seed descent in a spring wheat cross. Theoretical and Applied Genetics. Aug. 99(3-4): 432-436. {a} Plant Science Research Unit, Department of Agronomy and Plant Genetics, U.S. Department of Agriculture, Agricultural Research Service, University of Minnesota, 1991 Upper Buford Circle, 411 Borlaug Hall, Saint Paul, MN, 55108, USA

Maddonni, G. A., S. Urricariet, et al. (1999). Assessing soil quality in the Rolling Pampa, using soil properties and maize characteristics. Agronomy Journal. March April 91(2): 280-287. {a} Catedra de Cerealicultura, Univ. de Buenos Aires, Facultad de Agronomia, Av. San Martin 4453, 1417, Buenos Aires, Argentina

Mafongoya, P. L. and B. H. Dzowela (1999). Biomass production of tree fallows and their residual effect on maize in Zimbabwe. Agroforestry Systems 47(1-3): 139-151. {a} Zambia-ICRAF Agroforestry Project, Chipata, Zambia

Malafaia, P. A. M., S. C. V. Filho, et al. (1999). Kinetic parameters of ruminal degradation estimated with a non-automated system to measure gas production. Livestock Production Science 58(1): 65-73. {a} Departamento de Nutricao Animal e Pastagens, Universidade Federal Rural do Rio de Janeiro (Km 47), Bolsista do CNPq (521708197-4), Seropedica, RJ, CEP 23851-970, Brazil

Mallarino, A. P., J. M. Bordoli, et al. (1999). Phosphorus and potassium placement effects on early growth and nutrient uptake of no-till corn and relationships with grain yield. Agronomy Journal. Jan. Feb. 91(1): 37-45. {a} Dep. of Agronomy, Iowa State Univ., Ames, IA, 50011, USA

Mallikarjunaswamy, S. N., B. K. Ramachandrappa, et al. (1999). Effect of scheduling irrigation at different phenophases of sweet corn (Zea mays saccharata) and delineation of critical stages based on Stress Day Index. Journal of Agronomy and Crop Science. May 182(3): 161-166. {a} Department of Agronomy, University of Agricultural Sciences, Bangalore, KRN, 560 065, India

Maloney, T. S., K. G. Silveira, et al. (1999). Rotational vs. nitrogen-fixing influence of soybean on corn grain and silage yield and nitrogen use. Journal of Production Agriculture. April June 12(2): 175-187. {a} Dep. of Agronomy, Univ. of Wisconsin, 1575 Linden Dr., Madison, WI, 53706, USA

Mamo, M., J. A. E. Molina, et al. (1999). Nitrogen and carbon mineralization in soil amended with municipal solid waste compost. Canadian Journal of Soil Science. Nov. 79(4): 535-542. {a} Department of Soil, Water, and Climate, University of Minnesota, 1991 Upper Buford Circle, Saint Paul, MN, 55108, USA

Mamo, M., C. J. Rosen, et al. (1999). Nitrogen availability and leaching from soil amended with municipal solid waste compost. Journal of Environmental Quality. July Aug 28(4): 1074-1082. {a} Dep. of Soil, Water, and Climate, Univ. of Minnesota, 1991 Upper Buford Circle, St. Paul, MN, 55108, USA

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O, S. J., R. J. Thomas, et al. (1999). Effect of flumetsulam plus clopyralid soil residues on several vegetable crops and on sweet corn (Zea mays) cultivars grown in rotation. Weed Technology. April June 13(2): 303-307. {a} Department of Plant Agriculture, Horticultural Research Institute of Ontario, University of Guelph, Simcoe, ON, N3Y 4N5, Canada

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Oikawa, A., K. Ebisui, et al. (1999). Purification and characterization of a beta-glucosidase specific for 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA) glucoside in maize. Zeitschrift fuer Naturforschung Section C Journal of Biosciences. March April 54(3-4): 181-185. {a} Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan

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Ojeniyi, S. O. and F. O. Adekayode (1999). Soil conditions and cowpea and maize yield produced by tillage methods in the rainforest zone of Nigeria. Soil and Tillage Research. July 51(1-2): 161-164. {a} Department of Crop Production, Federal University of Technology, Akure, Nigeria

Olasantan, F. O. (1999). Nitrogen fertilization of okra (Abelmoschus esculentus) in an intercropping system with cassava (Manihot esculenta) and maize (Zea mays) in south-western Nigeria. Journal of Agricultural Science. Nov. 133(3): 325-334. {a} Department of Horticulture, University of Agriculture, Abeokuta, Nigeria

Olsen, J. K., J. T. Schaefer, et al. (1999). Effects of a network of mycorrhizae on capsicum (Capsicum annum L.) grown in the field with five rates of applied phosphorus. Australian Journal of Agricultural Research 50(2): 239-252. {a} Queensland Horticulture Inst., Dep. Primary Ind., Bundaberg Res. Stn., MS108 Ashfield Rd., Bundaberg, QLD 4670, Australia

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Orzechowski, S., H. J. Socha, et al. (1999). Subcellular distribution of alanine aminotransferase activity in maize (Zea mays L.) leaves. Acta Physiologiae Plantarum 21(4): 331-334. {a} Department of Biochemistry, Faculty of Agriculture, Warsaw Agricultural University, Rakowiecka 26/30, 02-528, Warszawa, Poland

Orzechowski, S., H. J. Socha, et al. (1999). Purification and properties of alanine aminotransferase from maize (Zea mays L.) leaves. Acta Physiologiae Plantarum 21(4): 323-330. {a} Department of Biochemistry, Faculty of Agriculture, Warsaw Agricultural University, Rakowiecka 26/30, 02-528, Warszawa, Poland

Orzechowski, S., H. J. Socha, et al. (1999). Alanine aminotransferase and glycine aminotransferase from maize (Zea mays L.) leaves. Acta Biochimica Polonica 46(2): 447-457. {a} Department of Biochemistry, Faculty of Agriculture, Warsaw Agricultural University, Rakowiecka 26/30, 02-528, Warszawa, Poland

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Ostrander, B., M. P. Maillot, et al. (1999). Cell wall phenolics and digestibility of normal and brown midrib maizes in different stem sections and across maturity stages. Journal of the Science of Food and Agriculture 79(3): 414-415. {a} Centre de Clermont Ferrand-Theix, INRA, 63122, St Genes Champanelle, France

Ouyang, X. Z., S. P. Xie, et al. (1999). Ultrastructural study on the degenerative processes of procambial cells in maize leaf blades. Acta Botanica Sinica. June 41(6): 570-575. {a} Zhongshan College, Zhongshan, Guangdong, China

Overman, A. R. (1999). Model for accumulation of dry matter and plant nutrient elements by tobacco. Journal of Plant Nutrition 22(1): 81-92. {a} Agric. Biol. Eng. Dep., Univ. Fla., Gainesville, FL 32611-0570, USA

Overman, A. R. and R. V. Scholtz, III (1999). Model for accumulation of dry matter and plant nutrients by corn. Communications in Soil Science and Plant Analysis. Sept. 30(15-16): 2059-2081. {a} Agricultural and Biological Engineering Department, University of Florida, Gainesville, FL, 32611-0570, USA

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Padilla, C., T. E. Ruiz, et al. (1999). Grain and forage yield on intercropping seasonal crops at Leucaena establishment and the recovery of Cynodon nlemfuensis. Cuban Journal of Agricultural Science. [print] September 33(3): 311-317. {a} Instituto de Ciencia Animal, San Jose de las Lajas, La Habana, Cuba

Pal, S. S. (1999). Selection of acid tolerant strains of phosphate-solubilizing bacteria in soils of Uttar Pradesh Himalaya. Indian Journal of Agricultural Sciences. Aug. 69(8): 578-582. {a} Soil Fertility, Cropping Systems Research, Modipuram, Meerut, 250 110, India

Paliwal, A. K., R. N. Singh, et al. (1999). Effect of nitrogen and zinc application on the growth, yield and nutrient uptake in rainfed maize (Zea mays L.). Advances in Plant Sciences. June 12(1): 223-226. {a} Zonal Agricultural Research Station, IGKV, Ambikapur, MP, 497001, India

Paliyath, G., R. G. Pinhero, et al. (1999). Effect of processing conditions on phospholipase D activity of corn kernel subcellular fractions. Journal of Agricultural and Food Chemistry. July 47(7): 2579-2588. {a} Department of Food Science, University of Guelph, Guelph, ON, N1G 2W1, Canada

Panavas, T., J. Weir, et al. (1999). The structure and paramutagenicity of the R-marbled haplotype of Zea mays. Genetics . Oct. 153(2): 979-991. {a} Biology Department, Morrill Science Center, University of Massachusetts, Room 311, Amherst, MA, 01003, USA

Pandey, M. D., P. J. Mishra, et al. (1999). Role of thinning and gap filling in yield and economics of maize (Zea mays L.). Crop Research Hisar. July 18(1): 161-162. {a} Department of Agronomy, CSA University of Agriculture and Technology, Kanpur, 208 002, India

Pang, X. P. and J. Letey (1999). Pesticide leaching sensitivity to irrigation, salinity and N application: Model simulations. Soil Science. Dec. 164(12): 922-929. {a} University of California, 2217 Geology Bldg., Riverside, CA, 92521-0424, USA

Panicker, S. and K. Gangadharan (1999). Controlling downy mildew of maize caused by Peronosclerospora sorghi by foliar sprays of phosphonic acid compounds. Crop Protection. March 18(2): 115-118. {a} Department of Plant Pathology, Tamil Nadu Agricultural University, Coimbatore, 641003, India

Pare, T. and E. G. Gregorich (1999). Soil textural effects on mineralization of nitrogen from crop residues and the added nitrogen interaction. Communications in Soil Science and Plant Analysis 30(1-2): 145-157. {a} Eastern Cereal Oilseed Res. Cent., Res. Branch, Agric. Agri-Food Canada, Central Experimental Farm, Ottawa, ON K1A 0C6, Canada

Park, K. S. and S. H. Kim (1999). Purification and characterization of wall-localized cellulase from maize coleoptiles. Journal of Plant Biology. June 42(2): 124-132. {a} Department of Biology Education, Korea National University of Education, Chungbuk, 363-791, South Korea

Parker, M. L., A. Grant, et al. (1999). Effects of popping on the endosperm cell walls of sorghum and maize. Journal of Cereal Science. Nov. 30(3): 209-216. {a} Institute of Food Research, Norwich Laboratory, Norwich Research Park, Colney Lane, Norwich, NR4 7UA, UK

Parkinson, R. J., M. P. Fuller, et al. (1999). An evaluation of greenwaste compost for the production of forage maize (Zea mays L.). Compost Science and Utilization 7(1): 72-80. {a} Department of Agriculture and Food Studies, Seale-Hayne Faculty, University of Plymouth, Newton Abbot, Devon, UK

Patra, B. C., B. B. Mandal, et al. (1999). Suitability of maize (Zea mays) based intercropping system. Indian Journal of Agricultural Sciences. nOV. 69(11): 759-762. {a} Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, West Bengal, 741 252, India

Paul, K. K. and S. C. Debanth (1999). Combining ability analysis in maize (Zea mays L.). Pakistan Journal of Scientific and Industrial Research. June 42(3): 141-144. {a} Department of Agriculture Science, Santahar Government College, Santahar, Bogra, Bangladesh

Pechan, T., B. Jiang, et al. (1999). Characterization of three distinct cDNA clones encoding cysteine proteinases from maize (Zea mays L.) callus. Plant Molecular Biology. May 40(1): 111-119. {a} Department of Biochemistry and Molecular Biology, Mississippi State University, Mississippi State, MS, 39762, USA

Pelleschi, S., S. Guy, et al. (1999). Ivr2, a candidate gene for a QTL of vacuolar invertase activity in maize leaves. Gene-specific expression under water stress. Plant Molecular Biology 39(2): 373-380. {a} Structure et Metabolisme des Plantes, Institut de Biotechnologie des Plantes (ERS 569, associee au CNRS), Universite de Paris-Sud, 91405, Orsay Cedex, France

Pena, M. J., I. Zarra, et al. (1999). Autolysis promotes the extension capacity of Zea mays coleoptile cell walls in response to acid pH solutions. Plant and Cell Physiology. June 40(6): 565-570. {a} Laboratorio de Fisiologia Vegetal, Facultad de Biologia, Universidad de Santiago, E-15706, Santiago de Compostela, Spain

Pena, V. C. B. and G. R. Rodriguez (1999). Free amino acids in maize (Zea mays L.) anthers during microsporogenesis. Cereal Research Communications 27(4): 395-402. {a} Botanica, Instituto de Recursos Naturales, Colegio de Postgraduados, Montecillo, Mexico, 56230, Mexico

Peracchia, G., A. B. Jensen, et al. (1999). Characterization, subcellular localization and nuclear targeting of casein kinase 2 from Zea mays. Plant Molecular Biology. May 40(2): 199-211. {a} Departament de Genetica Molecular, Centre d'Investigacio i Desenvolupament, C.S.I.C., Jordi Girona 18-26, 08034, Barcelona, Spain

Perera, I. Y., I. Heilmann, et al. (1999). Transient and sustained increases in inositol 1,4,5-trisphosphate precede the differential growth response in gravistimulated maize pulvini. Proceedings of the National Academy of Sciences of the United States of America. May 96(10): 5838-5843. {a} Department of Botany, North Carolina State University, Raleigh, NC, 27695-7612, USA

Peres, A., F. Ayaydin, et al. (1999). Partial synchronization of cell division in cultured maize (Zea mays L.) cells: Differential cyclin, cdc2, histone, and retinoblastoma transcript accumulation during the cell cycle. Journal of Experimental Botany. Aug. 50(337): 1373-1379. {a} Biological Research Center, Institute of Plant Biology, H-6701, Szeged, Hungary

Persaud, N. and R. Khosla (1999). Partitioning soil-water losses in different plant populations of dry-land corn. Agricultural Water Management. Nov. 42(2): 157-172. {a} Department of Crop and Soil Environmental Sciences, Virginia Polytechnic Institute and State University, Smyth Hall, Blacksburg, VA, USA

Peters, W. S. and H. H. Felle (1999). The correlation of profiles of surface pH and elongation growth in maize roots. Plant Physiology Rockville. Nov. 121(3): 905-912. {a} AK Kinematische Zellforschung, Biozentrum der J.W. Goethe-Universitaet, Marie-Curie-Strasse 9, D-60439, Frankfurt, Germany

Philippar, K., I. Fuchs, et al. (1999). Auxin-induced K+ channel expression represents an essential step in coleoptile growth and gravitropism. Proceedings of the National Academy of Sciences of the United States of America. Oct. 96(21): 12186-12191. {a} Julius-von-Sachs-Institut, Julius-von-Sachs-Platz 2, D-97082, Wuerzburg, Germany

Philippeau, C., D. D. M. F. Le, et al. (1999). Relationship between ruminal starch degradation and the physical characteristics of corn grain. Journal of Animal Science 77(1): 238-243. {a} Stn. Recherches Nutr. Herbivores, INRA, 63122 St. Genes Champanelle, France

Phiri, A. D. K., P. G. Y. Kanyama, et al. (1999). Maize and sesbania production in relay cropping at three landscape positions in Malawi. Agroforestry Systems 47(1-3): 153-162. {a} Bunda College of Agriculture, Lilongwe, Malawi

Phiri, L. K. and M. I. Damaseke (1999). Comparison of phosphorus impregnation and Bray 1 soil tests for evaluating plant available phosphorus. Communications in Soil Science and Plant Analysis. Nov. 30(19-20): 2811-2819. {a} Soil Laboratory, Mt. Makulu Research Station, Chilanga, Zambia

Phiri, R. H., S. Snapp, et al. (1999). Soil nitrate dynamics in relation to nitrogen source and landscape position in Malawi. Agroforestry Systems 47(1-3): 253-262. {a} ICRISAT, Lilongwe, Malawi

Pickering, I. J., R. C. Prince, et al. (1999). X-ray absorption spectroscopy of cadmium phytochelatin and model systems. Biochimica et Biophysica Acta 1429(2): 351-364. {a} Stanford Synchrotron Radiat. Lab., Stanford Univ., SLAC, P.O. Box 4349, MS 69, Stanford, CA 94309, USA

Pietrini, F., M. A. Iannelli, et al. (1999). Effects on photosynthesis, carbohydrate accumulation and regrowth induced by temperature increase in maize genotypes with different sensitivity to low temperature. Australian Journal of Plant Physiology 26(4): 367-373. {a} Instituto di Biochimica ed Ecofisiologia Vegetali, CNR, Via Salaria Km 29.3, 00016, Monterotondo Scalo, Rome, Italy

Pillegi, d. S. C. E. and A. F. B. F. do (1999). New host plant of Leptoglossus zonatus (Dallas) (Heteroptera: Coreidae). Anais da Sociedade Entomologica do Brasil. Dec. 28(4): 753-756. {a} Aluno de Doutorado - Entomologia, Faculdade de Filosofia, Ciencias e Letras de Ribeirao Preto, USP, 14040-901, Ribeirao Preto, SP, Brazil

Pinhero, R. G., G. Paliyath, et al. (1999). Chloroplast membrane organization in chilling-tolerant and chilling-sensitive maize seedlings. Journal of Plant Physiology. [print] December 155(6): 691-698. {a} Department of Plant Agriculture, Division of Horticultural Science, University of Guelph, Guelph, Ontario, N1G 2W1, Canada

Pinton, R., S. Cesco, et al. (1999). Modulation of NO3- uptake by water-extractable humic substances: Involvement of root plasma membrane H+ ATPase. Plant and Soil 215(2): 155-161. {a} Dipartimento di Produzione Vegetale e Tecnologie Agrarie, University of Udine, Via delle Scienze 208, I-33 100, Udine, Italy

Pizzolato, T. D. and M. D. Sundberg (1999). Initiation of the vascular system and the transition to flowering in early tassels of Zea mays land race chapalote (Poaceae). International Journal of Plant Sciences. Nov. 160(6): 1111-1125. {a} Delaware Agricultural Experiment Station, Department of Plant and Soil Sciences, College of Agriculture and Natural Resources, University of Delaware, Newark, DE, 19717-1303, USA

Plassard, C., M. Meslem, et al. (1999). Localization and quantification of net fluxes of H+ along maize roots by combined use of pH-indicator dye videodensitometry and H+-selective microelectrodes. Plant and Soil 211(1): 29-39. {a} Laboratoire de Recherches sur les Symbiotes des Racines, Institut National de la Recherche Agronomique, Place Pierre Viala, F-34060, Montpellier cedex 2, France

Plenet, D. and G. Lemaire (1999). Relationships between dynamics of nitrogen uptake and dry matter accumulation in maize crops. Determination of critical N concentration. Plant and Soil 216(1-2): 65-82. {a} UR Ecophysiologie et Horticulture, INRA, Domaine St Paul, Site Agroparc, F-84914, Avignon cedex, 9, France

Poggio, L., V. Confalonieri, et al. (1999). Genomic in situ hybridization (GISH) of Tripsacum dactyloides and Zea mays ssp. mays with B chromosomes. Genome . Aug. 42(4): 687-691. {a} Instituto Fitotecnico de Santa Catalina (Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata), 1836 Llavallol, Buenos Aires, Argentina

Polidoros, A. N. and J. G. Scandalios (1999). Role of hydrogen peroxide and different classes of antioxidants in the regulation of catalase and glutathione S-transferase gene expression in maize (Zea mays L.). Physiologia Plantarum. May 106(1): 112-120. {a} Department of Genetics, North Carolina State University, Raleigh, NC, 27695-7614, USA

Porwal, M. K. and H. K. Jain (1999). Effect of sowing dates on winter maize (Zea mays) varieties in command area of southern Rajasthan. Indian Journal of Agronomy. [print] September 44(3): 560-563. {a} Agricultural Research Station, Rajasthan Agriculture University, Banswara, Rajasthan, 327 001, India

Poudel, D. D., D. J. Midmore, et al. (1999). Erosion and productivity of vegetable systems on sloping volcanic ash-derived Philippine soils. Soil Science Society of America Journal. Sept. Oct. 63(5): 1366-1376. {a} Dep. of Agronomy and Range Sci., Univ. of California, Davis, CA, 95616, USA

Pouliquin, P., J. P. Grouzis, et al. (1999). Electrophysiological study with oxonol VI of passive NO3- transport by isolated plant root plasma membrane. Biophysical Journal 76(1 Part A): 360-373. {a} Biochim. Physiol. Mol. Plantes, ENSA-M/INRA/CNRS, F-34060 Montpellier cedex 1, France

Powell, J. M. and Z. Wu (1999). Nitrogen-15 labeling of dairy feces and urine for nutrient cycling studies. Agronomy Journal. Sept. Oct. 91(5): 814-818. {a} Dairy Forage Res. Ctr., USDA-ARS, 1925 Linden Dr. West, Madison, WI, USA

Pramanik, S. C. (1999). In-situ conservation of residual soil moisture through tillage and mulch for maize (Zea mays) in tropical Bay Islands. Indian Journal of Agricultural Sciences. April 69(4): 254-257. {a} Agronomy, Soils and Agroforestry Section, Central Agricultural Research Institute, Port Blair, AN, 744 101, India

Pretorius, J. C., D. T. Nieuwoudt, et al. (1999). Sucrose synthesis and translocation in Zea mays L. during early growth, when subjected to N and K deficiency. South African Journal of Plant and Soil. Nov. 16(4): 173-179. {a} Department of Agronomy and Horticulture, University of the Orange Free State, Bloemfontein, 9300, South Africa

Prezoto, F. and V. L. L. Machado (1999). Management of Polistes simillimus Zikan, 1951 colonies (Hymenoptera, Vespidae) in artificial wood shelters. Revista Brasileira de Entomologia. Dec. 43(3-4): 239-241. {a} Departamento de Zoologia, Instituto de Ciencias Biologicas, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, 36001-970, Brazil

Proctor, J., L. A. Bruijnzeel, et al. (1999). What causes the vegetation types on Mount Bloomfield, a coastal tropical mountain of the western Philippines? Global Ecology and Biogeography. Sept. 8(5): 347-354. {a} DBMS, University of Stirling, Stirling, FK9 4LA, UK

Provan, F. and C. Lillo (1999). Photosynthetic post-translational activation of nitrate reductase. Journal of Plant Physiology. May 154(5-6): 605-609. {a} Stavanger College, Tek. Nat. Avd., N-4004, Stavanger, Norway

Provan, J., P. Lawrence, et al. (1999). Analysis of the genus Zea (Poaceae) using polymorphic chloroplast simple sequence repeats. Plant Systematics and Evolution 218(3-4): 245-256. {a} Department of Cell and Molecular Genetics, Scottish Crop Research Institute, Invergowrie, Dundee, Scotland, DD2 5DA, UK

Przywara, G. and W. Stepniewski (1999). The influence of waterlogging at different temperatures on penetration depth and porosity of roots and on stomatal diffusive resistance of pea and maize seedlings. Acta Physiologiae Plantarum 21(4): 405-411. {a} Institute of Agrophysics, Polish Academy of Science, 20-290, Lublin 27, Poland

Qiu, F., J. M. Fu, et al. (1999). Isolation of high molecular weight DNA from plant nuclei. Acta Botanica Sinica. [print] Nov 41(11): 1204-1207. {a} Institute of Genetics, The Chinese Academy of Sciences, Beijing, 100101, China

Quarrie, S. A., J. V. Lazic, et al. (1999). Bulk segregant analysis with molecular markers and its use for improving drought resistance in maize. Journal of Experimental Botany. Aug. 50(337): 1299-1306. {a} John Innes Centre, Norwich Research Park, Colney, Norwich, NR4 7UH, UK

Rabinowicz, P. D., E. L. Braun, et al. (1999). Maize R2R3 Myb genes: Sequence analysis reveals amplification in the higher plants. Genetics . Sept. 153(1): 427-444. {a} Department of Plant Biology, Plant Biotechnology Center, Ohio State University, 1060 Carmack Rd., 206 Rightmire Hall, Columbus, OH, USA

Rabinowicz, P. D., K. Schutz, et al. (1999). Differential methylation of genes and retrotransposons facilitates shotgun sequencing of the maize genome. Nature Genetics. Nov. 23(3): 305-308. {a} Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, USA

Radhika, P. and K. C. Chitra (1999). Influence of host (Corcyra cephalonica St.) larval nutrition on various biological parameters of parasitoid, Goniozus nephantidis Muesebeck (Hymenoptera : Bethylidae), of coconut black headed caterpillar, Opisina arenosella W. Journal of Entomological Research New Delhi. March 23(1): 75-79. {a} Department of Entomology, Agricultural College, Bapatla, 522101, District Guntur, AP, India

Raghuram, N. and S. K. Sopory (1999). Roles of nitrate, nitrite and ammonium ion in phytochrome regulation of nitrate reductase gene expression in Maize. Biochemistry and Molecular Biology International 47(2): 239-249. {a} Department of Life Sciences, University of Mumbai, Vidyanagari, Mumbai, 4000 098, India

Rahnema, S. (1999). Potato chip scraps as a source of energy in the diet of nursery pigs. Journal of Production Agriculture. Oct. Dec. 12(4): 641-643. {a} Agric. Tech. Inst., Ohio State Univ., 1328 Dover Rd., Wooster, OH, 44691-4000, USA

Raj, S. M., S. C. Pramanik, et al. (1999). Productivity and profitability of lowland rainfed rice (Oryza sativa): Based cropping sequences in Andaman. Indian Journal of Agricultural Sciences. Aug. 69(8): 543-546. {a} Sugarcane Breeding Institute, Coimbatore, 641 003, India

Rajcan, I., L. M. Dwyer, et al. (1999). Note on relationship between leaf soluble carbohydrate and chlorophyll concentrations in maize during leaf senescence. Field Crops Research. July 63(1): 13-17. {a} Department of Plant Agriculture, Crop Science Division, University of Guelph, Guelph, Ontario, N1G 2W1, Canada

Rajcan, I. and M. Tollenaar (1999). Source: Sink ratio and leaf senescence in maize: II. Nitrogen metabolism during grain filling. Field Crops Research 60(3): 255-265. {a} Department of Crop Science, University of Guelph, Guelph, ON, N1G 2W1, Canada

Rajcan, I. and M. Tollenaar (1999). Source: Sink ratio and leaf senescence in maize: I. Dry matter accumulation and partitioning during grain filling. Field Crops Research 60(3): 245-253. {a} Department of Crop Science, University of Guelph, Guelph, ON, N1G 2W1, Canada

Rajendran, K. and S. D. Sundersingh (1999). Effect of irrigation regimes and nitrogen levels on yield, water requirement, water use efficiency and quality of baby corn (zea mays). Agricultural Science Digest. Sept. 19(3): 159-161. {a} Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore, 641 003, India

Ramahaleo, T., R. Morillon, et al. (1999). Osmotic water permeability of isolated protoplasts. Modifications during development. Plant Physiology Rockville 119(3): 885-896. {a} Unite Propre de Recherches de l'Enseignement Superieur Associee Centre National de la Recherche Scientifique 6037, Universite de Rouen, Faculte des Sciences, 76821, Mont-Saint-Aignan cedex, France

Randall, G. W., M. A. Schmitt, et al. (1999). Corn production as affected by time and rate of manure application and nitrapyrin. Journal of Production Agriculture. April June 12(2): 317-323. {a} Univ. of Minnesota South. Exp. Stn., 35838 120th St., Waseca, MN, 56093-4521, USA

Rao, S. A. and T. McNeilly (1999). Genetic basis of variation for salt tolerance in maize (Zea mays L). Euphytica 108(3): 145-150. {a} School of Biological Sciences, University of Liverpool, Nicholson Building, Liverpool, L69 3BX, UK

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

Rasse, D. P., J. T. Ritchie, et al. (1999). Nitrogen management impacts on yield and nitrate leaching in inbred maize systems. Journal of Environmental Quality. July Aug 28(4): 1365-1371. {a} Crop and Soil Sciences Dep., Michigan State Univ., Plant and Soil Sciences Building, East Lansing, MI, 48824, USA

Rasse, D. P. and A. J. M. Smucker (1999). Tillage effects on soil nitrogen and plant biomass in a corn-alfalfa rotation. Journal of Environmental Quality. May June 28(3): 873-880. {a} Dep. of Crop and Soil Sciences, Michigan State Univ., Plant and Soil Sciences Building, East Lansing, MI, 48824-1325, USA

Rather, A. G., F. A. Sheikh, et al. (1999). Variability and correlation studies in maize (Zea mays L.) under rainfed conditions. Advances in Plant Sciences. Dec. 12(2): 539-542. {a} Rice and Regional Research Station, SKUAST, Khudwani, Anantnag, Kashmir, 192101, India

Raun, W. R. and G. V. Johnson (1999). Improving nitrogen use efficiency for cereal production. Agronomy Journal. May June 91(3): 357-363. {a} Dep. of Plant and Soil Sciences, Oklahoma State University, Stillwater, OK, 74078, USA

Raveton, M., P. Ravanel, et al. (1999). Triticonazole distribution in dressed corn caryopsis and seedlings. Journal of Agricultural and Food Chemistry. April 47(4): 1740-1744. {a} Laboratoire de Physiologie Cellulaire Vegetale, Universite Joseph Fourier, F-38041, Grenoble Cedex 09, France

Read, D. B., P. J. Gregory, et al. (1999). Physical properties of axenic maize root mucilage. Plant and Soil 211(1): 87-91. {a} Department of Soil Science, University of Reading, Whiteknights, Reading, RG6 6DW, UK

Reddy, M. D. and K. A. Kumar (1999). Production efficiency of winter season sunflower (Helianthus annuus): Based cropping systems under Sri Ram Sagar Project command area of Andhra Pradesh. Indian Journal of Agricultural Sciences. June 69(6): 399-401. {a} College of Agriculture, AICRP on Weed Control, Rajendranagar, Hyderabad, 500 030, India

Reddy, M. D., A. Srinivas, et al. (1999). Effect of scheduling of irrigation on performance of winter maize (Zea mays) in Alfisols. Indian Journal of Agricultural Sciences. April 69(4): 285-286. {a} College of Agriculture, Acharya N G Ranga Agricultural University, Rajendranagar, Hyderabad, 500 030, India

Reggiani, R., N. Aurisano, et al. (1999). Genotypic variation and relationship among nitrogen assimilation traits in Zea mays. Revista Brasileira de Fisiologia Vegetal. Dec. 11(3): 123-128. {a} Istituto Biosintesi Vegetali, CNR, via Bassini 15, 20133, Milano, Italy

Reicosky, D. C., D. W. Reeves, et al. (1999). Effects of residue management and controlled traffic on carbon dioxide and water loss. Soil and Tillage Research. Oct. 52(3-4): 153-165. {a} Agriculture Research Service, North Central Soil Conservation Research Laboratory, USDA, 803 Iowa Avenue, Morris, MN, USA

Reid, L. M., R. W. Nicol, et al. (1999). Interaction of Fusarium graminearum and F. moniliforme in maize ears: Disease progress, fungal biomass, and mycotoxin accumulation. Phytopathology . Nov. 89(11): 1028-1037. {a} Eastern Cereal and Oilseed Research Centre, Central Experimental Farm, Agriculture and Agri-Food Canada, Ottawa, ON, K1A 0C6, Canada

Ren, H. Y. (1999). Preparation of actin and fluorescent actin analogs from plant cells. Acta Botanica Sinica. [print] Oct 41(10): 1099-1103. {a} College of Life Sciences, The Key Laboratory of Cell Proliferation and Regulation Biology of Ministry of Education, Beijing Normal University, Beijing, 100875, China

Renner, K. A., S. M. Swinton, et al. (1999). Adaptation and evaluation of the WEEDSIM weed management model for Michigan. Weed Science. May June 47(3): 338-348. {a} Department of Crop and Soil Sciences, Michigan State University, E. Lansing, MI, 48824, USA

Revilla, P., A. Butron, et al. (1999). Relationships among kernel weight, early vigor, and growth in maize. Crop Science. May June 39(3): 654-658. {a} Mision Biologica de Galicia, CSIC, E-36080, Pontevedra, Spain

Ribaut, J. M. and J. Betran (1999). Single large-scale marker-assisted selection (SLS-MAS). Molecular Breeding 5(6): 531-541. {a} CIMMYT, International Maize and Wheat Improvement Center, Lisboa 27, Apdo. Postal 6-641, 06600, Mexico, DF, Mexico

Ribeiro, E. A., Jr., F. Q. Cunha, et al. (1999). Growth phase-dependent subcellular localization of nitric oxide synthase in maize cells. FEBS Letters 445(2-3): 283-286. {a} Departamento de Bioquimica, Instituto de Biologia, Universidade Estadual de Campinas, 13083-970, Campinas, SP, Brazil

Riedel, K., C. Mangelsdorf, et al. (1999). Cloning and characterization of cystathionine gamma-synthase from Solanum tuberosum L. Plant Biology Stuttgart. Nov. 1(6): 638-644. {a} Angewandte Genetik, Institut fuer Biologie, Freie Universitaet Berlin, Albrecht-Thaer-Weg 6, D-14195, Berlin, Germany

Riedell, W. E. and R. N. Reese (1999). Maize morphology and shoot CO2 assimilation after root damage by western corn rootworm larvae. Crop Science. Sept. Oct. 39(5): 1332-1340. {a} Northern Grain Insects Research Lab., USDA-ARS, 2923 Medary Ave., Brookings, SD, 57006, USA

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Sadana, U. S. and N. Claassen (1999). Potassium efficiency and dynamics in the rhizosphere of wheat, maize, and sugar beet evaluated by a mechanistic model. Journal of Plant Nutrition. June 22(6): 939-950. {a} Institute of Agricultural Chemistry, Georg-August University, Von-Siebold-Str. 6, D-37075, Gottingen, Germany

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Schubert, S. and F. Yan (1999). Changes in net proton release by roots of intact maize plants after local nutrient supply in a split root system. Journal of Plant Nutrition and Soil Science. Dec. 162(6): 577-582. {a} Institute of Plant Nutrition, Justus Liebig University, Suedanlage 6, D-35390, Giessen, Germany

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Seiter, S., R. D. William, et al. (1999). Crop yield and tree-leaf production in three planting patterns of temperate-zone alley cropping in Oregon, USA. Agroforestry Systems 46(3): 273-288. {a} Department of Horticulture, Oregon State University, Corvalis, OR, USA

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Serrano, M. G., L. R. Nunes, et al. (1999). Trypanosomatidae: Phytomonas detection in plants and phytophagous insects by PCR amplification of a genus-specific sequence of the spliced leader gene. Experimental Parasitology 91(3): 268-279. {a} Departamento de Parasitologia, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo, 05508-900, Brazil

Shane, M. W. and M. E. McCully (1999). Root xylem embolisms: Implications for water flow to the shoot in single-rooted maize plants. Australian Journal of Plant Physiology 26(2): 107-114. {a} Department of Biology, Carleton University, Ottawa, K1S 5B6, Canada

Shapiro, C. A. (1999). Using a chlorophyll meter to manage nitrogen applications to corn with high nitrate irrigation water. Communications in Soil Science and Plant Analysis. April 30(7-8): 1037-1049. {a} Northeast Research and Extension Center, Haskell Agricultural Laboratory, University of Nebraska, Concord, NE, 68728-2828, USA

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Shi, S. Y., Q. H. Xue, et al. (1999). Effects of N-carboxymethylchitosan on N-metabolic key enzymes of grains and storage protein contents of seeds in maize. Acta Phytophysiologica Sinica 25(2): 187-192. {a} Institute of Agrobiological Genetics and Physiology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China

Shimomura, S., S. Watanabe, et al. (1999). Characterization of auxin-binding protein 1 from tobacco: Content, localization and auxin-binding activity. Planta Berlin. July 209(1): 118-125. {a} National Institute of Agrobiological Resources, Kannondai 2-1-2, Tsukuba, Ibaraki, 305-8602, Japan

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Shuman, L. M. and D. V. McCracken (1999). Tillage, lime, and poultry litter effects on soil zinc, manganese, and copper. Communications in Soil Science and Plant Analysis. May 30(9-10): 1267-1277. {a} Crop and Soil Sciences Department, Georgia Experiment Station, University of Georgia, Griffin, GA, 30223-1797, USA

Shuman, L. M. and D. V. McCraken (1999). Tillage, lime, and poultry litter effects on plant concentrations of zinc, manganese, and copper. Journal of Plant Nutrition. March 22(3): 609-620. {a} Crop and Soil Sciences Department, The University of Georgia, Georgia Experiment Station, Griffin, GA, 30223-1797, USA

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Sidorenko, L., X. Li, et al. (1999). Characterization of the regulatory elements of the maize P-rr gene by transient expression assays. Plant Molecular Biology 39(1): 11-19. {a} Department of Zoology and Genetics, and Department of Agronomy, Iowa State University, Ames, IA, 50011, USA

Sikkema, P. H., S. Z. Knezevic, et al. (1999). Biologically effective dose and selectivity of SAN 1269H (BAS 662H) for weed control in corn (Zea mays). Weed Technology. April June 13(2): 283-289. {a} Crop Science Division, Department of Plant Agriculture, University of Guelph, Guelph, ON, N1G 2W1, Canada

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Singh, A. K. (1999). Growth and induction in food consumption of Helicoverpa armigera Hbn. (Lep., Noctuidae) larvae on chickpea, soybean, and maize diets. Journal of Applied Entomology. July 123(6): 335-339. {a} Department of Zoology, University of Delhi, Delhi, DEL, 110007, India

Singh, B. B., K. Y. Mai, et al. (1999). Relative drought tolerance of major rainfed crops of the semi-arid tropics. Indian Journal of Genetics and Plant Breeding. Nov. 59(4): 437-444. {a} IITA Kano, C/o L. W. Lambourn and Co., 26, Dingwall Road, Caroyln House, Croydon, CR9, UK

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Singh, H. B., B. R. Sharma, et al. (1999). Ethnobotanical observation on the preparation of Rokshi (a local drink) in Sikkim, India. Journal of Economic and Taxonomic Botany. [print] September 23(2): 580-582. {a} Sikkim Biodiversity and Ecotourism, Sikkim Unit, G.B. Pant Institute of Himalayan Environment and Development, Tadong, Gangtok, SKM, 737 102, India

Singh, N. and V. K. Saxena (1999). Combining ability of early maturing narrow base synthetics for resistance to maydis leaf blight in maize (Zea mays L.). Crop Improvement. [print] June 26(1): 66-70. {a} Department of Plant Breeding, Punjab Agricultural University, Ludhiana, 141 004, India

Singh, S. and P. K. Katiyar (1999). Variation in nutritive value of fodder maize (Zea mays) genotypes. Indian Journal of Animal Sciences. Oct. 69(10): 827-829. {a} Plant Animal Relationship Division, Indian Grassland and Fodder Research Institute, Jhansi, Uttar Pradesh, 284 003, India

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Sivaguru, M., F. Baluska, et al. (1999). Impacts of aluminum on the cytoskeleton of the maize root apex. Short-term effects on the distal part of the transition zone. Plant Physiology Rockville 119(3): 1073-1082. {a} Institute of Plant Nutrition, University of Hannover, Herrenhaeuserstrasse 2, D-30419, Hannover, Germany

Smart, J. R. and J. M. Bradford (1999). Conservation tillage corn production for a semiarid, subtropical environment. Agronomy Journal. Jan. Feb. 91(1): 116-121. {a} USDA-ARS, 2413 E. Hwy 83, Weslaco, TX, 78596, USA

Smith, C. K. and S. C. Fry (1999). Biosynthetic origin and longevity in vivo of alpha-D-mannopyranosyl-(1 fwdarw 4)-alpha-D-glucuronopyranosyl-(1 fwdarw 2)-myo-inositol, an unusual extracellular oligosaccharide produced by cultured rose cells. Planta Berlin. Nov. 210(1): 150-156. {a} Edinburgh Cell Wall Group, Institute of Cell and Molecular Biology, University of Edinburgh, Daniel Rutherford Building, King's Buildings, Edinburgh, EH9 3JH, UK

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Snyder, W. E., D. W. Tonkyn, et al. (1999). Transmission of a genetically engineered rhizobacterium by grasshoppers in the laboratory and field. Ecological Applications 9(1): 245-253. {a} Center for Ecology, Evolution and Behavior, and Department of Entomology, University of Kentucky, Lexington, KY, 40546-0091, USA

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