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Preplanting Applications of Diuron in Cotton

Published online by Cambridge University Press:  12 June 2017

K. C. Hamilton ,
H. F. Arle ,
W. P. Cahill  and
J. M. Witt
K. C. Hamilton
Affiliation:
Arizona Agricultural Experiment Station, Tucson
H. F. Arle
Affiliation:
Agricultural Research Service, U. S. Department of Agriculture, Phoenix
W. P. Cahill
Affiliation:
Arizona Agricultural Experiment Station, Tucson
J. M. Witt
Affiliation:
Arizona Agricultural Experiment Station, Tucson
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Abstract

Cotton seedlings emerged normally following applications of 3-(3,4-dichlorophenyl)-1,1-dimethylurea (diuron) before or after furrowing for the preplanting irrigation, but 7 to 10 days after emergence stands were sometimes reduced when diuron was applied before furrowing. Stand reductions were most severe when cottonseed were planted at or above the layer of diuron-treated soil. Cotton varieties differed in tolerance to diuron. Preplanting applications controlled annual weeds until mid-season and treated cotton produced normal yields, except where stands were reduced. Fiber properties and boll components of treated cotton were not altered. Content of diuron was highest in young cotton plants. No diuron was found in cottonseed at harvest using an analytical procedure having a sensitivity of 0.1 ppm.

Type
Research Article
Information
Weeds , Volume 14 , Issue 2 , April 1966 , pp. 145 - 148
Copyright
Copyright © 1966 Weed Science Society of America 

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References

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