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Water Requirements of Cotton (Gossypium Hirsutum) Sown on Different Dates in a Monsoon Climate

Published online by Cambridge University Press:  03 October 2008

M. A. Taha
Affiliation:
Central Cotton Research Institute, Multan, Pakistan
M. N. A. Malik
Affiliation:
Central Cotton Research Institute, Multan, Pakistan
F. I. Chaudhry
Affiliation:
Central Cotton Research Institute, Multan, Pakistan
M. I. Makhdum
Affiliation:
Central Cotton Research Institute, Multan, Pakistan

Summary

The consumptive use of water by cotton (G. hirsutum L.) variety 149F, sown at three dates, was calculated using Penman Et × crop factor method. The earlier the sowing date the more water evapotranspired, mainly due to differences in the length of the growing season and the amount by which it coincided with the monsoonal depression of potential evapotranspiration. An example is given of calculating the irrigation requirements of a mid-June sown cotton, accounting for average rainfall, showing that the water requirements of cotton during the early stages may be adequately met by the establishment irrigation and rains during July. Examples are cited to show that a charged profile at the beginning of the season may sustain good growth and produce satisfactory yield.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1982

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