Question
What is the depth of irrigation, if an area of 2 ha is
irrigated in 50 hrs with a discharge rate of 300 l/min?Solution
Discharge in 50 hrs= 300×50×60 =900,000 l (1 m3=1000 l) = 900 m3 Depth of irrigation= Volume of water/ Area= 900 m3/20000 m3 = 4.5 cm (1 cm= 10 mm) =45 mm
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