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Over-the-top Applications of Herbicides in Cotton

Published online by Cambridge University Press:  12 June 2017

H. F. Arle  and
K. C. Hamilton
H. F. Arle
Affiliation:
Arizona Agr. Exp. Sta., Phoenix, AZ 85040
K. C. Hamilton
Affiliation:
Arizona Agr. Exp. Sta., Tucson, AZ 85721
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Abstract

Single and repeat applications of herbicides or herbicide combinations were made over-the-top of young cotton (Gossypium hirsutum L.). DMSA (disodium methanearsonate) and MSMA (monodosium methanearsonate) applied 4 or 8 weeks after emergence had less effect on cotton yield, boll components, and fiber properties than did applications made 12 weeks after emergence. Most single, over-the-top applications of DSMA, fluometuron [1,1-dimethyl-3-(α,α,α-trifluoro-m-tolyl)urea], or DSMA with fluometuron 4 weeks after emergence did not affect cotton yield, boll components, or fiber properties. One or two applications of diuron [3-(3,4-dichlorophenyl)-1,1-dimethylurea] or prometryn [2,4-bis(isopropylamino)-6-(methylthio)-s-triazine] alone, or with DSMA, reduced cotton yields. Applications of 1.1 and 2.2 kg/ha of fluometuron over-the-top of cotton 2 to 8 weeks after emergence did not affect cotton yields, boll components, or fiber properties.

Type
Research Article
Information
Weed Science , Volume 24 , Issue 2 , March 1976 , pp. 166 - 169
Copyright
Copyright © 1976 by the Weed Science Society of America 

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References

Literature Cited

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