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Determine the Gross irrigation requirement for an irrigation system if consumptive use of crop is 200 cm in terms of depth and the rainfall excess is 30 cm. assume water application efficiency = 50% and conveyance efficiency = 90%.

Determine the Gross irrigation requirement for an irrigation system if consumptive use of crop is 200 cm in terms of depth and the rainfall excess is 30 cm. assume water application efficiency = 50% and conveyance efficiency = 90%. Correct Answer 377.77 cm

Given, Cu = 200 cm, Re = 30 cm, Na = 50%, Nc = 90% NIR = CIR + losses = (200-300) + 0 = 170 cm FIR = NIR / Na = 170/0.5 = 340 cm GIR = FIR / Nc = 340/0.9 = 377.77 cm.

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