Question

Wheat crop requires45 cm of irrigation water
during 120 days irrigation period. How much
land can be irrigated with a flow of 20 litres per
second for a 22 hours a day​

Answer 1

Explanation:

Given : Base period, B = 120 days, = 55-10 = 45cm = 0.45m

△△ = 8.64BD⇒D=8.64×B△=8.64×1200.45BD⇒D=8.64×B△=8.64×1200.45 = 2304

Area, A = Q××D = 0.01××2304 = 23.04ha

Since ηη = 60%, Area of land irrigated = 23.04××0.6 = 13.82ha.