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Effect of Concentration and Time of Application of the Defoliant Harvade on the Lint, Seed, Protein and Oil Yields, and Oil Properties of Cottonseed

Published online by Cambridge University Press:  03 October 2008

Z. M. Sawan ,
EL-S. H. M. Hefni  and
M. A. Allam
Z. M. Sawan
Affiliation:
Cotton Research Institute, Agricultural Research Centre, Ministry of Agriculture, Giza
EL-S. H. M. Hefni
Affiliation:
Agronomy Department, Faculty of Agriculture Sciences, Zagazig University, Moshtohor, Kalubia
M. A. Allam
Affiliation:
Field Crop Research Institute, Agricultural Research Centre, Ministry of Agriculture, Giza, Egypt
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Summary

Field experiments were performed in 1981 and 1982 on the cotton cultivar Giza 75 to determine the effect of different concentrations and application dates of the defoliant Harvade on the lint, seed, protein and oil yields, and oil properties of cottonseed. Defoliant concentrations of 240, 360 and 480 ml ha−1 increased lint yield per plant but tended to decrease seed index. Cottonseed yield per hectare, seed oil and protein percentage and yield, oil refractive index, free fatty acids, saponification and iodine values were not significantly affected by the defoliant. Late application increased lint yield per plant and cottonseed, oil and protein yield per hectare. Date of application had no effect on seed index, seed oil and protein percentage and oil properties.

Type
Research Article
Information
Experimental Agriculture , Volume 24 , Issue 1 , January 1988 , pp. 123 - 127
Copyright
Copyright © Cambridge University Press 1988

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References

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