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Yellow Nutsedge and Cotton Response to Several Herbicides

Published online by Cambridge University Press:  12 June 2017

P. E. Keeley ,
C. H. Carter  and
J. H. Miller
P. E. Keeley
Affiliation:
Agr. Res. Serv., U.S. Dep. of Agr., Shafter, CA 93263
C. H. Carter
Affiliation:
Agr. Res. Serv., U.S. Dep. of Agr., Shafter, CA 93263
J. H. Miller
Affiliation:
Agr. Res. Serv., U.S. Dep. of Agr., Shafter, CA 93263
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Abstract

Seven herbicides were evaluated for the control of yellow nutsedge (Cyperus esculentus L.) in cotton (Gossypium hirsutum L. ‘Acala SJ-1’) in three field experiments during 1970 and 1971. The herbicides, 2-chloro-2′,6′-diethyl-N-(methoxymethyl) acetanilide (alachlor); 2-chloro-2′,6′-diethyl-N-(butoxymethyl) acetanilide (CP-53619); 2,4-bis(isopropylamino)-6-methylthio)-s-triazine (prometryne); 2-(α-naphthoxy)-N, N-diethylpropionamide (R-7465); S-isopropyl 5-ethyl-2-methylpiperidine-1-carbothioate (R-12001); 4-chloro-5-(dimethylamino)-2-(α,α,α-trifluoro-m-tolyl)-3-(2H)-pyridazinone (San-6706); and 2-(3,4-dichlorophenyl)-4-methyl-1,2,4-oxadiazolidine-3,5-dione (methazole), were applied broadcast and incorporated 10 cm deep into the soil before the preplanting irrigation. All herbicides controlled nutsedge for at least 1 month in two or more experiments. Cotton was most tolerant to applications of 2.24 and 4.48 kg/ha of CP-53619, 3.36 and 6.72 kg/ha of prometryne, 1.12 kg/ha of San-6706, and 2.24 kg/ha of methazole. Higher rates of San-6706 and methazole and all rates of alachlor, R-7465, and R-12001 reduced the yield of cotton in one or more experiments.

Type
Research Article
Information
Weed Science , Volume 21 , Issue 4 , July 1973 , pp. 327 - 329
Copyright
Copyright © 1973 Weed Science Society of America 

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References

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