Abstract
AbstractAn Irrigation District Decision Support System (IRDDESS) is described and applied to a large irrigation scheme in the Middle Awash Valley of Ethiopia. Crop yields are simulated over a 12‐year period in order to determine which of 12 separate irrigation schedules in use meet certain specified objectives. IRDDESS is a crop growth and irrigation district simulation model capable of predicting biomass development and yields for fields varying in soil type and irrigation management scenarios. IRDDESS also tracks water demand in the distribution system. Results show which of the 12 schedules will meet specific objectives of maximizing yields or minimizing water use and illustrate the potential of such decision support system in evaluation and management of large irrigation schemes. Copyright © 2001 John Wiley & Sons, Ltd.
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