Irrigation Requirement (ET-based, acre-feet)
Crop ET demand (Kc x ET0 x days), net and gross irrigation depth after rainfall and application efficiency, and total acre-feet / gallons over the field. Per FAO Irrigation and Drainage Paper 56 and the USDA NRCS Irrigation Guide; reference ET0 from your local station.
Audience
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Posture
Rough Logic answers the math question the working professional asks on the job. The site is a calm, fast, ad-free, account-free, ever-free reference. It does not interpret code. It does not replace the licensed professional. It does not store your inputs. The Authority Having Jurisdiction governs all installations and inspections.