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Hydrology & Irrigation
Classes of Soil Water and Different Soil Moisture Levels
The following...
Question
The following data were noted from an irrigation field:
The net irrigation requirement per meter depth of soil will be
A
75 mm
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B
125 mm
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C
50 mm
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D
25 mm
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Solution
The correct option is
D
25 mm
Net irrigation requirement
= Consumption Use - Effective Rainfall
=
0.5
×
(
0.2
−
0.1
)
×
15
10
×
1000
=
0.05
×
15
10
×
1000
=
75
m
m
Effective rainfall = 50 mm
∴
Net irrigation requirement
= 75 mm - 50 mm = 25 mm
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