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Yield-ET Functions in Irrigation Systems Design

by Richard G. Allen, Iowa State Univ, Ames, IA, USA,



Document Type: Proceeding Paper

Part of: Development and Management Aspects of Irrigation and Drainage Systems

Abstract:

A linear-programming (LP) framework and associated computer routines were developed to evaluate economics of deficit irrigation in system design and to optimize the sizing and operation of irrigation system components. The framework includes linear crop evapotranspiration - production functions and simulates crop evapotranspiration (ET) and resulting crop yields according to irrigation application levels and soil moisture availability. The LP framework simulates irrigation system costs and requirements including costs for capital, labor, energy and water, and provides for hydraulic and economic continuity throughout the system. Sprinkler, pipe, pump and canal systems are modeled and total system productivity and profitability are computed.

Subject Headings: Irrigation systems | Computer programming | Computer models | Water resources | Economic factors | Crops | Computer languages

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