Irrigation Engineering
Effective precipitation for a crop may be defined as

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

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Irrigation Engineering
Assertion A : To estimate the rainfall over a catchment, the number of raingauges required per unit area is large for hilly areas.Reason R : Rainfall gradient is steep. Select your correct answer according to the coding system given below :

A is true but R is false
Both A and R are true and R is the correct explanation of A
A is false but R is true
Both A and R are true but R is not the correct explanation of A

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