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Evapotranspiration and Growth Predictions of CERES Maize, Sorghum and Wheat in the Southern High Plains

by J. L. Steiner, USDA-ARS, Bushland, United States,
T. A. Howell, USDA-ARS, Bushland, United States,
J. A. Tolk, USDA-ARS, Bushland, United States,
A. D. Schneider, USDA-ARS, Bushland, United States,



Document Type: Proceeding Paper

Part of: Structures for Enhanced Safety and Physical Security

Abstract:

Daily ET, leaf area index, and dry matter accumulation were predicted using CERES models for maize, sorghum, and winter wheat grown at Bushland, Texas to determine the models' suitability for water management simulation. The potential ET equation should be more responsive to low and high evaporativity. Initial results from wheat indicate excessive sensitivity to water stress. Stress predictions should accelerate vegetative development and LAI senescence. Water stress prediction needs additional evaluation, for additional crops and under moderate stress conditions.

Subject Headings: Crops | Water resources | Water supply | Simulation models | Irrigation water | Evapotranspiration | Water management | Texas | United States

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