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Cotton Leaf Reddening in the Irrigated Gezira

Published online by Cambridge University Press:  03 October 2008

H. M. Ishag ,
A. T. Ayoub  and
M. B. Said
H. M. Ishag
Affiliation:
Gezira Research Station, PO Box 126, Wad Medani, Sudan
A. T. Ayoub
Affiliation:
Gezira Research Station, PO Box 126, Wad Medani, Sudan
M. B. Said
Affiliation:
Gezira Research Station, PO Box 126, Wad Medani, Sudan
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Summary

Cotton leaf reddening was studied in irrigated vertisols at the Gezira Research Farm over three seasons. The percentage leaf reddening was negatively correlated with seed cotton yield. Plants showing symptoms of reddening produced smaller and fewer leaves which did not persist long enough to sustain the reproductive parts. Deficiencies of nitrogen and phosphorus were found to be responsible for the reddening symptoms. Nitrogen application, late August sowing and frequent control of insect pests all significantly reduced the incidence of reddening. Other possible remedies are discussed.

Type
Research Article
Information
Experimental Agriculture , Volume 23 , Issue 2 , April 1987 , pp. 207 - 212
Copyright
Copyright © Cambridge University Press 1987

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References

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