Chapter
Apr 26, 2012
Crop Coefficients Developed at Bushland, Texas for Corn, Wheat, Sorghum, Soybean, Cotton, and Alfalfa
Authors: T. A. Howell [email protected], S. R. Evett [email protected], J. A. Tolk [email protected], K. S. Copeland [email protected], D. A. Dusek [email protected], and P. D. Colaizzi [email protected]Author Affiliations
Publication: World Environmental and Water Resource Congress 2006: Examining the Confluence of Environmental and Water Concerns
Abstract
Crop coefficients derived from evapotranspiration measured with large, precise weighing lysimeters at Bushland, TX are presented for the major regional irrigated crops — corn, wheat, sorghum, soybean, cotton, and alfalfa. The ASCE/EWRI standardized reference evapotranspiration equation for daily weather data for short (ETos, grass) and tall (ETrs, alfalfa) crops was used as the base. Crop coefficients for both ETos and ETrs were summarized. They were generally in agreement with Kcb values from Davis, CA; Kimberly, ID; and from FAO-56.
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© 2006 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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ASCE Technical Topics:
- Agriculture
- Climates
- Crops
- Ecosystems
- Engineering fundamentals
- Environmental engineering
- Equipment and machinery
- Evaporation
- Evapotranspiration
- Hydrologic engineering
- Infrastructure
- Irrigation engineering
- Measuring instruments
- Meteorology
- Urban and regional development
- Vegetation
- Water and water resources
- Water management
- Water policy
- Water quality
- Water resources
- Water treatment
- Weather forecasting
Authors
Affiliations
Research Leader, USDA-ARS, Conservation & Production Research Laboratory, P.O. Drawer 10, Bushland, TX 79012-0010. E-mail: [email protected]
Soil Scientist, USDA-ARS, Conservation & Production Research Laboratory, P.O. Drawer 10, Bushland, TX 79012-0010. E-mail: [email protected]
Plant Physiologist, USDA-ARS, Conservation & Production Research Laboratory, P.O. Drawer 10, Bushland, TX 79012-0010. E-mail: [email protected]
Soil Scientist, USDA-ARS, Conservation & Production Research Laboratory, P.O. Drawer 10, Bushland, TX 79012-0010. E-mail: [email protected]
Agron. (Collaborator), USDA-ARS, Conservation & Production Research Laboratory, P.O. Drawer 10, Bushland, TX 79012-0010. E-mail: [email protected]
Agricultural Engineer, USDA-ARS, Conservation & Production Research Laboratory, P.O. Drawer 10, Bushland, TX 79012-0010. E-mail: [email protected]
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