Irrigation Water Management with Rotation Scheduling Policiesby John A. Replogle, USDA, Phoenix, AZ, USA,
Abstract: Rotation schedules are delivery-system oriented and represent relatively low capitol investment in system components and system management, but are not usually responsive enough to crop water needs and on-farm requirements to permit economical, highly efficient water use and high crop production. The Rotation schedules can sometimes improve on low irrigation efficiencies in areas where farm operators are untrained or are new to irrigation technology. It is strongly suggested that rigid Rotation scheduling policies be considered as an interim delivery policy and that efforts should be made to direct education, rehabilitation, and redesign toward providing better informed users and more flexible delivery schedules that respond to soil and crop-water needs and conserve water and energy.
Subject Headings: Scheduling | Rotation | Water conservation | Irrigation | Systems management | Crops | Water supply systems | Irrigation water
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