The data for an agricultural field for a specific month are given below:Pan Evaporation = 100 mmEffective Rainfall = 20 mm (after deducting losses due to runoff and deep percolation)Crop Coefficient = 0.4Irrigation Efficiency = 0.5The amount of irrigation water (in mm) to be applied to the field inthat month, isa)80b)40c)20d)0Correct answer is option 'B'. Can you explain this answer?

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The data for an agricultural field for a specific month are given below:
Pan Evaporation = 100 mm
Effective Rainfall = 20 mm (after deducting losses due to runoff and deep percolation)
Crop Coefficient = 0.4
Irrigation Efficiency = 0.5
The amount of irrigation water (in mm) to be applied to the field in that month, is

a)
80
b)
40
c)
20
d)
0

Correct answer is option 'B'. Can you explain this answer?

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The data for an agricultural field for a specific month are given belo...

Water required by crop = 100 × 0.4 mm = 40 mm
Effective rainfall = 20 mm
Additional water requried = 20 mm
Amount of water required after accounting irrigation efficiency = 20/0.5 = 40mm

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The data for an agricultural field for a specific month are given below:Pan Evaporation = 100 mmEffective Rainfall = 20 mm (after deducting losses due to runoff and deep percolation)Crop Coefficient = 0.4Irrigation Efficiency = 0.5The amount of irrigation water (in mm) to be applied to the field inthat month, isa)80b)40c)20d)0Correct answer is option 'B'. Can you explain this answer?

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