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Effects of Spraying and Cultural Practices on Cotton in Uganda

Published online by Cambridge University Press:  03 October 2008

J. C. Davies
J. C. Davies
Affiliation:
Section of Entomology, Department of Agriculture, Serere Research Station, Uganda
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Summary

Trials on cotton in Uganda show that four DDT sprays give substantial increases in yields and a reduction in percentage of stained cotton. Benefits were obtained from early ploughing prior to sowing and there were positive interactions between time of ploughing and spraying. Fertilizer applications of superphosphate and sulphate of ammonia generally produced marginal benefits but more cotton was obtained from fertilized plots if they were sprayed, though not if unsprayed. The effect of fertilizer on the pest complex was slight, though one pest appeared to be attracted to lush fertilized cotton. Spraying gave excellent control of bollworms and mirids.

Type
Research Article
Information
Experimental Agriculture , Volume 6 , Issue 1 , January 1970 , pp. 65 - 78
Copyright
Copyright © Cambridge University Press 1970

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