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Rates of Herbicides in Irrigated Cotton

Published online by Cambridge University Press:  12 June 2017

H. F. Arle  and
K. C. Hamilton
H. F. Arle
Affiliation:
Agr. Res. Serv., U.S. Dep. of Agr., Phoenix, AZ 85040
K. C. Hamilton
Affiliation:
Arizona Agr. Exp. Sta., Tucson, AZ 85721
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Abstract

Rates of trifluralin (α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine) applied preplanting were combined with rates of diuron [3-(3,4-dichlorophenyl)-1,1-dimethylurea] applied postemergence in cotton (Gossypium hirsutum L. ‘Deltapine 16’). In another experiment, two levels of these herbicides were applied in three populations of cotton. All herbicide combinations improved weed control, compared to that of cultivated checks. Applications of 0.28, 0.42, and 0.56 kg/ha of trifluralin combined with 0.56 kg/ha of diuron controlled annual weeds and produced the highest cotton yields. Herbicide treatments had more influence than crop spacing on weed control and crop yield. Weed competition on cultivated checks affected boll weight, seed per boll, and fiber fineness.

Type
Research Article
Information
Weed Science , Volume 23 , Issue 3 , May 1975 , pp. 179 - 181
Copyright
Copyright © 1975 by the Weed Science Society of America 

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References

Literature Cited

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