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Control of flowering in two commercial sugar-cane varieties

Published online by Cambridge University Press:  27 March 2009

M. A. El Manhaly ,
O. Fadayomi ,
Y. A. Abayomi  and
M. O. Olofinboba
M. A. El Manhaly
Affiliation:
Sugar Research Institute, University of Ilorin, Ilorin, Nigeria
O. Fadayomi
Affiliation:
Sugar Research Institute, University of Ilorin, Ilorin, Nigeria
Y. A. Abayomi
Affiliation:
Sugar Research Institute, University of Ilorin, Ilorin, Nigeria
M. O. Olofinboba
Affiliation:
Sugar Research Institute, University of Ilorin, Ilorin, Nigeria
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Summary

Experiments were conducted over two cropping seasons at the Sugar Cane Estate of the Nigerian Sugar Company, Bacita, Nigeria to determine the effectiveness of additional nitrogen fertilizer, chemical sprays and delayed planting in controlling flowering in two commercial sugar-cane varieties (Co. 1001 andCp. 29/116). Application of 150 and 250 kg N/ha, 8 weeks before initiation, reduced flowering in Co. 1001 by up to 13·5 and 11 % respectively. Flowering was as low as 2% in some of the above treatments while the average flowering in plots with no additional nitrogen application was more than 80%. imilarly, application of diuron (4·0 kg/ha) and paraquat (0'5 kg/ha) to the top leaves (3 weeks before initiation) of Co. 1001 reduced flowering in this variety up to 45 and 35% respectively. Neither the application of diuron and paraquat nor additional nitrogen fertilizer sufficiently reduced flowering in Cp. 29/116. The time of planting affected flowering. Over 85% flowering was observed in November 1982 from Co. 1001 fields planted in January 1982 (10 months before initiation time). However, fields of the same variety planted in June 1982 (4 months before initiation time) did not show any initiation until harvest in May 1983. The implications of the above results are discussed.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 103 , Issue 2 , October 1984 , pp. 333 - 338
Copyright
Copyright © Cambridge University Press 1984

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