Civil Engineering ⇒ Topic : Water Requirement for Crop
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Sunita
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Water Requirement for Crop it is the total amount of water required at the field head to mature a crop without regard to the source of water. Obviously it includes the amount of water needed to meet : 1. Losses through evaporation 2. Losses through transpiration 3. Plant through transpiration 4. Application losses 5. Special needs It however does not include transit losses.
Water requirement of crops can be expressed
mathematically as :-WR = CU + Application losses + Special needs or WR = TR + ER + S where WR = Water requirement of a crop CU = Consumptive use of water IR = Irrigation requirement of a crop at field head ER = Effective rainfall S = Soil moisture contribution | |
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