Water use by soybean in two soils with and without irrigation |
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| Institution: | 1. Department of Land Resource Science University of Guelph Guelph, Ontario Canada N1G 2W1;2. Plant Science Department South Dakota State University Brookings, SD 57007 U.S.A.;1. State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100101, China;2. College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;1. ALSIA Centro Ricerche Metapontum Agrobios, s.s. Jonica 106, km 448,2, Metaponto, MT 75010, Italy;2. PlantLab, Institute of Life Sciences, Scuola Superiore Sant’Anna, Piazza Martiri della Libertà 33, Pisa 56127, Italy;3. Valagro S.p.A, via Cagliari 1, Atessa, CH 66041, Italy;1. School of Civil, Architectural and Environmental System Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea;2. Department of Water Resources, Graduate School of Water Resources, Sungkyunkwan University, Suwon 440-746, Republic of Korea;3. Chung-Ang University, 84, Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea;1. Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement and Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Innovative Academy of Seed Design, Chinese Academy of Sciences, Guangzhou 510650, China;2. Innovative Center of Molecular Genetics and Evolution, School of Life Sciences, Guangzhou University, Guangzhou 510006, China;3. Root Biology Center, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China;4. Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Innovative Academy of Seed Design, Chinese Academy of Sciences, Harbin 150081, China;5. Field Science Center for Northern Biosphere, Hokkaido University, Sapporo 060-0811, Japan;6. Research Faculty of Agriculture, Hokkaido University, Sapporo 060-8589, Japan;7. School of Natural Sciences, University of Tasmania, Hobart, Tasmania, TAS 7001, Australia;8. University of Chinese Academy of Sciences, Beijing, China |
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| Abstract: | Water use and seed yield of soybeans (Glycine max. L.), grown on two soils with and without irrigation were investigated. Seed yield, in each soil type, was significantly correlated to water use. Most of the differences in water use, between the irregated versus dryland treatments, in each soil type, occurred during the podfill growth stage. The podfill growth stage water use, in the irrigated treatment of each soil type, was almost twice that in the corresponding dryland. The podfill growth stage water use, irrespective of the treatments, varied with the soil type. This was attributed to the differences in the contribution of preplant profile stored water between the soil types. The contribution of preplant profile storage, in one soil type, to podfill growth stage water use was similar to the rainfall received during this growth stage in this soil type. However, in the second soil type the corresponding contribution was almost three times that of the rainfall. The results indicated soybean seed yield benefitted most from irrigation during the podfill growth stage. The results suggests the information in preplant profile storage, availability and use, in conjunction with rainfall is useful in developing appropriate soil water management practices. |
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