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Закрити книгу / close this bookAbstracts on Sustainable Agriculture (GTZ; 1992; 423 pages)
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts On Traditional Land-Use Systems
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on farming systems research and development
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on integrated systems
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on cropping system
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on agroecology
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on agrometeorology
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on agroforestry
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on homegardens
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on seed production
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Закрити папку / close this folderAbstracts on water management
Перегляд документу / View the documentAcknowledgements
Перегляд документу / View the document1. Water management.
Перегляд документу / View the document2. Crop diversification in irrigated agriculture: water management constraints.
Перегляд документу / View the document3. Steam corridors in watershed management
Перегляд документу / View the document4. Water harvesting.
Перегляд документу / View the document5. An economic analysis of irrigation systems.
Перегляд документу / View the document6. Production of annual crops on microcatchments.
Перегляд документу / View the document7. Problems and lessons from irrigation projects in less developed countries of Africa.
Перегляд документу / View the document8. Irrigation organization and management.
Перегляд документу / View the document9. Soil water balance in the Sudano-Sahelian zone: summary proceedings of an international workshop. (bilan hydrique en zone Soudano-Sahelienne: comptes rendus d'un Atelier international)
Перегляд документу / View the document10. Vanishing land and water.
Перегляд документу / View the document11. Water use by legumes and its effect on soil water status.
Перегляд документу / View the document12. Environmental impact assessment for sustainable development: chittaurgarh irrigation project in outer Himalayas.
Перегляд документу / View the document13. Production and water use of several food and fodder crops under irrigation in the desert area of southwestern Peru.
Перегляд документу / View the document14. Evaluation of the on-farm water management project in the Dominican republic.
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on soil fertility
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on erosion and desertification control
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on potential crops for marginal lands
 

11. Water use by legumes and its effect on soil water status.

Crop Science, 29, (5), 1989, pp. 1212-1216

To make informed decisions on whether to include legumes in cropping systems, information is needed on water use by legumes and its effect on soil water availability to subsequent crops. The objectives of this study were to determine the water use, water use efficiency (WUE), and soil water depletion pattern of four grain legumes and three green-manure or forage legumes. Field studies were conducted on a Fargo silty clay (fine, montmorillonitic, frigid Vertic Haplaquoll) at Fargo and on a Perella-Bearden silty clay loam (fine-silty, mixed, frigid Typic Haplaquoll; fine-silty, frigid Aeric Calciaquoll) at Prosper, ND in 1986 and 1987. Soil water to a depth of 2.2 m was determined by the neutron attenuation method at 15-d intervals. Legume crops used 10 to 25% more seasonal water than wheat (Triticum aestivum L.) across environments, but WUE (kg dry matter ha-1 mm-1 of water) of legumes was 0 to 25% greater than that of wheat. Green manure and forage legumes generally had greater water use and WUE than grain legumes, and this was associated with their longer growing season and higher dry matter production. Cumulative water depletion during June to September by green-manure, forage, and grain legumes was 70, 63, and 43 mm greater, respectively, than that of a fallow check, and was not significantly different from that of wheat in two of four environments. However, an increase in soil water content occurred at the 0- to 0.3- m soil depth for all treatments in the following spring across three environments.

Soil water content in the spring following a legume was not significantly different from that following wheat and was only about 30 mm greater than that of fallow across environments. These results indicate that growing some legumes in cropping systems may not substantially affect the soil water content compared to continuous cereal cropping or to fallow.

1234 92 - 11/55

Water management

Asia, India, Himalayas, irrigation project, environmental impact assessment, sustainable development, water demand

AHMAD, A. and P.P.SINGH

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