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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

REFERENCES

Ali, M. T. A. (1983). Effect of chemical defoliation on the yield and technological properties of cotton. MSc Thesis, Zagazig University, Egypt.Google Scholar
AOAC (1970). Association of Official Agricultural Chemists, Official Methods of Analysis. Washington, D.C.: AOAC.Google Scholar
AOCS (1964). American Oil Chemists Society, Official and Tentative Methods, Third edition. Chicago, Illinois: AOCS.Google Scholar
Cathey, G. W. (1979). Harvest-aid chemicals and practices for cotton. Outlook on Agriculture 10:191.CrossRefGoogle Scholar
Cathey, G. W. (1980). Chemical plant growth regulators: mid-south cotton. In Proceedings of the Plant Growth Regulators Working Group, 197–198 (Ed. Abdel-Rahman, M.). Longmont, Colorado, USA: Plant Growth Regulator Working Group.Google Scholar
Cathey, G. W. & Barry, H. R. (1977). Evaluation of glyphosate as a harvest aid chemical on cotton. Agronomy Journal 69:11–14.CrossRefGoogle Scholar
Cathey, G. W., Luckett, K. & Rayburn, S. T. (1982). Accelerated cotton boll dehiscence with growth regulator and desiccant chemicals. Field Crops Research 5:113.Google Scholar
Dubonosov, V. A. & Babaev, T. Ya. (1983). Effectiveness of defoliants. Zashchita Rastnil 6:32 (Field Crop Abstracts 36, 11, 969, 1983).Google Scholar
El-Shaer, M. H., El-Kadi, D. A., Samra, A. M. & El-Deeb, A. A. (1983). Effect of cotton defoliation and fertilization on yield and quality. Egyptian Society of Crop Science. The First Conference of Agronomy, 2, 729–738.Google Scholar
El-Tabbakh, A. E., Sallouma, B. M., Samra, A. M. & El-Kadi, M. B. (1981). Effect of plant population densities and harvest-aid chemical on cotton yield and its components. Egyptian Journal Agronomy 6:29–44.Google Scholar
Hefni, El-S. H., Samra, A. M., Saleh, M. E. & Nomeir, A. A. (1982). Effect of nitrogen fertilizer, defoliant application date and defoliant concentration on cotton yield and quality. Research Bulletin No. 708, Faculty of Agriculture, Zagazig University, Egypt.Google Scholar
Hopkins, A. R. & Moore, R. F. (1980). Thidiazuron: effect of application on bollweevil and bollworm population densities, leaf abscission, and growth of cotton plant. Journal of Economic Entomology 73:768.Google Scholar
Imamaliev, A. I., Khodzhaev, A. S. & Agzamov, A. (1973). Effect of defoliants on the photosynthetic apparatus of cotton plants. Nauchnye Trudy, Tashkentskiˇ Sel' skokhozyaiˇstvennyi Institut No. 37, 72–79. (Field Crop Abstracts 28, 3, 149, 1975).Google Scholar
Morgan, P. W. (1984). Chemical manipulation of abscission and desiccation. Beltsville Symposia in Agricultural Research 8 (In press).Google Scholar
Nawar, M. T. A. (1975). The relation between morphological and technological characters in some Egyptian cotton varieties. MSc Thesis, Al-Azhar University, Egypt.Google Scholar
Osman, R. O. (1978). Effect of cotton defoliation on seed and oil characters. Colon et Fibres Tropicales 33:263 (Abstracts Tropical Agriculture 5, 4, 24702, 1979).Google Scholar
Rabey, G. G. (1982). Chemical condition of cotton trial. In Annual Report 1980/1981, Cotton Research Institute, Zimbabwe, 26–29Harare, Zimbabwe: Department of Research and Specialist Services. (Field Crop Abstracts 37, 1, 61, 1984).Google Scholar
Snedecor, G. W. & Cochran, W. G. (1969). Statistical Methods, 6th Edition. Iowa, USA: Iowa State College Press.Google Scholar
Sodhi, K. S. & Singh, M. (1981). Effect of chemical defoliation of cotton (Gossypium hirsutum) crop on the time of its maturity. Indian Journal of Ecology 8:36–40.Google Scholar