Irrigation Engineering
Effective precipitation for a crop may be defined as

Available water stored in soil within root zone of the crop
Total precipitation minus the loss due to infiltration
Total precipitation minus the loss due to evaporation
Total precipitation during the crop period

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Irrigation Engineering
Infiltration rate is always

less than the infiltration capacity
equal to or more than the infiltration capacity
equal to or less than the infiltration capacity
more than the infiltration capacity

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Irrigation Engineering
For a standing crop, the consumptive use of water is equal to the depth of water

Used by the crop in transpiration, evaporation and also the quantity of water evaporated from adjacent soil
Transpired by the crop
Transpired and evaporated by the crop
Evaporated by the crop

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