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1969 Dec

Issue (Volume No. 28, Number 1)

SCHEDULING OF IRRIGATION FOR WHEAT IN A SEMI-HUMID TROPICAL CANAL COMMAND USING WATER BALANCE APPROACH

Incorporating soil dryness coefficient, site specific crop coefficient, daily rainfall and reference crop evapotranspiration and allowable depletion limits for various stages of growth, scheduling of irrigation and the crop water requirement for wheat crop in an irrigation command in semi-humid tropical region of Orissa (India), is estimated using water balance approach. The water balance sheet prepared on daily basis using MS Excel is much flexible and user friendly with provision to modify each input variable as per actual site and management requirements. The crop water requirement thus computed comes out to be 4 % less than those estimated using conventional crop coefficient approach.

by Prabeer Kumar Parhi , S.K. Mishra and Ranvir Singh
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