International Commission on Irrigation & Drainage Commission Interationale des Irrigation et du Drainage



(4875) Irrigation water requirement, Irrigation need
The quantity of water, exclusive of precipitation that is required for normal crop production. It includes surface evaporation and some unavoidable losses under the given conditions. It is usually expressed in units of water-depth or depth per unit area and may be stated as monthly, seasonal, annual, or for a crop growth period. It is exactly the same as `water duty` when the latter is expressed in similar units.

Related items you may like

Irrigation

Dictionary - Irrigation History Terms

Sign up for newsletter

Follow us