A sandy loam soil holds water at 140 mm/m depth between field capacity and permanent wilting point. The root depth of the crop is 30 cm and the allowable depletion of water is 35%. The daily water use by the crop is 5 mm/day. The area to be irrigated is 60 ha and water can be delivered at 28 litres per second. The surface irrigation application efficiency is 40%. There are no rainfall and ground water contribution. Determine:- (i) allowable depletion depth between irrigations (ii) frequency of irrigation (iii) net application depth of water (iv) volume of water required (v) time to irrigate 4 ha plot
A sandy loam soil holds water at 140 mm/m depth between field capacity and permanent wilting point. The root depth of the crop is 30 cm and the allowable depletion of water is 35%. The daily water use by the crop is 5 mm/day. The area to be irrigated is 60 ha and water can be delivered at 28 litres per second. The surface irrigation application efficiency is 40%. There are no rainfall and ground water contribution. Determine:- (i) allowable depletion depth between irrigations (ii) frequency of irrigation (iii) net application depth of water (iv) volume of water required (v) time to irrigate 4 ha plot
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A sandy loam soil holds water at 140 mm/m
depth between field capacity and permanent
wilting point. The root depth of the crop is 30 cm
and the allowable depletion of water is 35%. The
daily water use by the crop is 5 mm/day. The
area to be irrigated is 60 ha and water can be
delivered at 28 litres per second. The surface
irrigation application efficiency is 40%. There are
no rainfall and ground water contribution.
Determine:-
(i) allowable depletion depth between irrigations
(ii) frequency of irrigation
(iii) net application depth of water
(iv) volume of water required
(v) time to irrigate 4 ha plot
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