Irrigation Engineering
The amount of irrigation water required to meet the evapotranspiration needs of the crop during its full growth is called

net irrigation requirement
consumptive use
effective rainfall
consumptive irrigation requirement

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Irrigation Engineering
Bligh's theory of seepage assumes

Loss of head follows the sine curve
Equal weightage to the horizontal and vertical creep
Less weightage to horizontal creep than vertical creep
More weightage to horizontal creep than vertical creep

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