Action of purposely providing land with water, other than rain, for improving pastures or crop production. (FAO. 2017. World Programme for the Census of Agriculture 2020. Volume I Programme, concepts and definitions. https://openknowledge.fao.org/handle/20.500.14283/i4913e)
Note
Irrigation is the general practice of supplying water to land or crops to assist with agricultural production. For the specific techniques and systems used to deliver water to crops, see irrigation methods c_3957.