Report
Using an atmometer for irrigation scheduling in Eastern Washington
Washington State University Extension fact sheet, 361E, Washington State University Extension
09/2021
DOI:
https://doi.org/10.7273/000001728
Handle:
https://hdl.handle.net/2376/120100
Abstract
Good irrigation water management improves grower profitability and also improves environmental water quality. Most irrigation scheduling techniques require an estimate of daily crop water use (evapotranspiration). Evapotranspiration (ET) is usually estimated by calculating the ET of a reference crop, which is usually grass or alfalfa, and then multiplying that by a crop coefficient that is specific to a particular crop and that crop�s growth stage. Although reference crop evapotranspiration can usually be calculated from weather data measured by automated agricultural weather stations, these stations are expensive and may be located in areas that do not represent the local weather conditions of a particular field. The atmometer (sometimes called an ET-gauge) is a relatively simple and inexpensive alternative to a full weather station and is used to estimate reference crop evapotranspiration for irrigation scheduling.
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Details
- Title
- Using an atmometer for irrigation scheduling in Eastern Washington
- Creators
- R. Troy PetersRomulus Okwany
- Academic Unit
- Publications, WSU Extension
- Series
- Washington State University Extension fact sheet; 361E
- Publisher
- Washington State University Extension; Pullman, Washington
- Format
- pdf
- Identifiers
- 99900623600701842
- Copyright
- http://rightsstatements.org/vocab/CNE/1.0/
- Language
- English
- Resource Type
- Report