Question
Irrigation requirement of 90 days duration maize variety
is 50 cm. How much area can be irrigated with a flow rate of 20 litre per second for 8 hours in a day.Solution
Irrigation availability = 20 × 60 × 60× 8 = 576000 l = 576 mᶾ /day Irrigation required for maize 1 ha - 50cm = 10000 × 50/100 = 5000mᶾ Duration = 90 days 576 mᶾ /day availability for 90 days = 576 × 90 = 51830 mᶾ Required for 1 ha = 5000 mᶾ Area required = 51830/5000 = 10.36 = 10.4ha
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