Irrigation Requirement, Crop The amount of irrigation water in acre-feet per acre required by the crop, the quantity of water, exclusive of precipitation, that is required for production of a specific crop. It is the difference between Crop Consumptive Use or Crop Requirement and the effective precipitation for plant growth. To this amount the following items, as applicable, are added: (1) irrigation applied prior to crop growth, (2) water required for leaching, (3) miscellaneous requirements of germination, frost protection, plant cooling, etc., and (4) the decrease in soil moisture should be subtracted.
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Author of the Water Words Dictionary source of text: Gary A. Horton
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