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Yellow Nutsedge (Cyperus esculentus) Control with Herbicides

Published online by Cambridge University Press:  12 June 2017

Paul E. Keeley ,
Charles H. Carter  and
Robert J. Thullen
Paul E. Keeley
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Shafter, CA 93263
Charles H. Carter
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Shafter, CA 93263
Robert J. Thullen
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Shafter, CA 93263
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Abstract

The relatively new micro-encapsulated formulation of alachlor [2-chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl)acetamide] and diethatyl [N-(chloroacetyl)-N-(2,6-diethylphenyl)glycine] were soil-applied for yellow nutsedge (Cyperus esculentus L. #3 CYPES) control in cotton (Gossypium hirsutum L. ‘Acala SF-2’). Both herbicides at rates of 1.68 to 3.36 kg ai/ha provided 60 to 80% control of yellow nutsedge for 6 weeks. Although control declined to 50 to 70% by cotton harvest, plots treated with herbicides usually yielded more seed cotton than cultivated control plots. Yields were similar from herbicide-treated and hand-weeded plots. Fewer tubers were counted in herbicide-treated than in cultivated-control plots in the fall. Based on yellow nutsedge control and seed cotton yields, alachlor and diethatyl could be helpful in controlling nutsedge and protecting cotton yields.

Keywords

Gossypium hirsutumpreemergence weed controlalachlordiethatylCYPES
Type
Research
Information
Weed Technology , Volume 1 , Issue 2 , April 1987 , pp. 133 - 139
Copyright
Copyright © 1987 by the Weed Science Society of America 

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References

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