Comparison of equations used for estimating agricultural crop evapotranspiration with field research

Technical Report · Sat Oct 01 00:00:00 EDT 1983

OSTI ID:6590884

Hill, R W; Johns, E L; Frevert, D K

Research data on alfalfa water use and related yields were obtained for 10 sites in the Western United States. Similar research data was obtained for corn at eight sites. Four different types of research studies were available: lysimeter, line source sprinkler, stress plots, and farm yield. Research alfalfa yields and corresponding ET (evapotranspiration) were assumed to be 20 percent greater than field attained yields and ET, based on experience. Similarly, corn research yields and ET were assumed to be 10 percent greater than field attained yields and ET. Yield versus ET relationships were derived from the available research data.

• Research Organization: Bureau of Reclamation, Denver, CO (USA). Engineering and Research Center
• OSTI ID: 6590884
• Report Number(s): PB-84-209394
• Resource Relation: Other Information: Prepared in cooperation with Utah State Univ., Logan, Dept. of Agricultural and Irrigation Engineering
• Country of Publication: United States
• Language: English

Related Subjects

60 APPLIED LIFE SCIENCES
ALFALFA
PRODUCTIVITY
WATER REQUIREMENTS
MAIZE
COMPARATIVE EVALUATIONS
EVAPORATION
IRRIGATION
MATHEMATICAL MODELS
PLANT GROWTH
SEASONAL VARIATIONS
SOLAR RADIATION
TRANSPIRATION
CEREALS
GRAMINEAE
GRASS
GROWTH
LEGUMINOSAE
PHASE TRANSFORMATIONS
PLANTS
RADIATIONS
STELLAR RADIATION
VARIATIONS
553000* - Agriculture & Food Technology