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Directed Applications of Herbicides in Irrigated Cotton

Published online by Cambridge University Press:  12 June 2017

K. C. Hamilton
Affiliation:
Arizona Agr. Exp. Sta., Tucson
H. F. Arle
Affiliation:
Crops Research Division, Agr. Res. Serv., U. S. Dep. of Agr., Phoenix, Arizona

Abstract

Directed applications of low rates of 3-(3,4-dichlorophenyl)-1,1-dimethylurea (diuron), disodium methanearsonate (DSMA), monosodium methanearsonate (MSMA), 1,1′-dimethyl-4,4′-bipyridinium salts (paraquat), and 2,4-bis(isopropylamino)-6-(methylthio)-s-triazine (prometryne) controlled annual weeds in irrigated cotton (Gossypium hirsutum L.). Although the first applications of most herbicides caused temporary, localized foliage chlorosis or burning, cotton yields, fiber properties, and boll components were not affected. Early applications of DSMA followed by diuron selectively controlled annual weeds. When a herbicide was applied before planting, fewer postemergence applications were needed for weed control.

Information

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

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