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    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?
    A 22.22 mm Correct Answer Incorrect Answer
    B 4.5 mm Correct Answer Incorrect Answer
    C 45 mm Correct Answer Incorrect Answer
    D None of the above Correct Answer Incorrect Answer

    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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