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New Evapotranspiration Crop Coefficients
Abstract
Improved crop coefficients for various Pacific Northwest irrigated crops were developed for estimating crop evapotranspiration (ET) from estimates or measurements of reference ET. Reference ET was based on that for well watered, actively growing alfalfa with sufficient growth for near maximum ET in arid, irrigated regions. ET for the alfalfa reference crop and other crops was measured with sensitive weighing lysimeters at the field site near Kimberly, Idaho. The new crop coefficients are basal or minimal coefficients for conditions when soil evaporation is minimal but root-zone soil moisture is adequate. When combined with improved estimates of evaporation from wet soils, they should permit more accurate estimates of daily crop ET, more accurate irrigation scheduling, and more reliable estimates of crop water requirements. Curves were developed for alfalfa, potatoes, snap beans, sugarbeets, peas, sweet and field corn and winter and spring cereals.
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Citations
Cited by
Self-Calibrating Method for Estimating Solar Radiation from Air Temperature
Allen, R. G. (1997) · Journal of Hydrologic Engineering · doi:10.1061/(asce)1084-0699(1997)2:2(56 · Cited by 301
Inman-Bamber, N. G., & McGlinchey, M. G. (2003) · Field Crops Research · doi:10.1016/s0378-4290(03)00069-8 · Cited by 172
Tarkalson, D. D., Payero, J. O., Ensley, S. M., & Shapiro, C. A. (2006) · Agricultural Water Management · doi:10.1016/j.agwat.2006.04.005 · Cited by 70
Metadata
- Authors
- Wright, J. L.
- Venue
- Journal of the Irrigation and Drainage Division
- Published
- 1982-03
- Volume
- 108
- Issue
- 1
- Pages
- 57-74
- ISSN
- 0044-7978 (ISSN-L)
- 2690-3296
- OpenAlex
- W1539968547
- Cited by
- 642
- References
- 0
- FWCI
- 10.14
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: New Evapotranspiration Crop Coefficients. https://app.cochat.ai/papers/10.1061/jrcea4.0001372
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- Wright, J. L. (1982). New Evapotranspiration Crop Coefficients. Journal of the Irrigation and Drainage Division. https://doi.org/10.1061/jrcea4.0001372
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
