Reactive Irrigation Scheduling for Sloping Furrow Irrigation

by Dean E. Eisenhauer, Univ of Nebraska-Lincoln, Lincoln, United States,
C. Dean Yonts, Univ of Nebraska-Lincoln, Lincoln, United States,
Joel E. Cahoon, Univ of Nebraska-Lincoln, Lincoln, United States,
Brenda Brown, Univ of Nebraska-Lincoln, Lincoln, United States,



Document Type: Proceeding Paper

Part of: Management of Irrigation and Drainage Systems: Integrated Perspectives

Abstract:

We developed a technique for estimating the proportion of the applied irrigation water that is effective when using furrow irrigation. To apply the method, irrigators would need to know furrow flow rate, furrow slope, cut off time, advance time to the end of the field, and soil texture. Roughness and the general furrow shape would have to be assumed. The technique was developed to make water balance irrigation scheduling more applicable to furrow irrigation by removing some of the uncertainty about system efficiency. The application of the technique is limited to sloping furrows.

Subject Headings: Furrow irrigation | Slopes | Irrigation | Irrigation water | Water balance | Soil water | Water supply

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