Transcription of Chapter 2 Irrigation Water Requirements - USDA
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Part 623 National Engineering HandbookIrrigation Water RequirementsChapter 22 1(210-vi-NEH, September 1993)United StatesDepartment ofAgricultureSoilConservationServicePart 623 NationalEngineeringHandbookChapter 2 Irrigation WaterRequirementsPart 623 National Engineering HandbookIrrigation Water RequirementsChapter 22 2(210-vi-NEH, September 1993)Issued September 1993 The United States Department of Agriculture ( usda ) prohibits discrimina-tion in its programs on the basis of race, color, national origin, sex, religion,age, disability, political beliefs, and marital or familial status. (Not all pro-hibited bases apply to all programs.) Persons with disabilities who requirealternative means for communication of program information (braille, largeprint, audiotape, etc.) should contact the usda Office of Communicationsat (202) 720-5881 (voice) or (202) 720-7808 (TDD).
Todays management of irrigation water requires using the best estimate that current technology can provide for the determination of crop water use and field irrigation water requirements. Support for many of the estimated values included in this chapter come from field research and many field evaluations over many years.
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