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Influence of Weed Competition on Cotton

Published online by Cambridge University Press:  12 June 2017

Gale A. Buchanan
Affiliation:
Department of Agronomy and Soils, Auburn University Agricultural Experiment Station, Auburn, Alabama
Earl R. Burns
Affiliation:
Department of Agronomy and Soils, Auburn University Agricultural Experiment Station, Auburn, Alabama

Abstract

Cotton (Gossypium hirsutum L.) grown at two locations in Alabama from 1966 to 1968 produced maximum yields when kept free of annual weeds for approximately 8 weeks after emergence. Weed control for longer periods failed to increase yields. When initial weed control measures were delayed until 6 to 7 weeks after emergence at one location and 4 to 5 weeks at the other location, cotton was not injured. Prolonged weed competition past the critical periods usually resulted in drastic cotton yield reductions. Plant height and stem diameter of cotton were reduced by some of the weed competition treatments.

Information

Type
Research Article
Copyright
Copyright © 1970 Weed Science Society of America 

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