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Comparison of Postemergence Herbicides for Common Bermudagrass (Cynodon dactylon) Control in Peanut (Arachis hypogaea)

Published online by Cambridge University Press:  12 June 2017

W. James Grichar
W. James Grichar*
Affiliation:
Texas Agric. Exp. St., Box 755, Yoakum, TX 77995
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Abstract

Field experiments conducted from 1990 through 1993 evaluated single and sequential applications of various postemergence graminicides for common bermudagrass control in peanut. UBI-1956 at 70 and 100 g/ha applied early POST (EP) or sequentially, controlled common bermudagrass equivalent to fluazifop-P applied EP or sequentially. Clethodim provided variable common bermudagrass control. Clethodim applied EP provided better control than sethoxydim while control from sequential clethodim applications were equivalent to fluazifop-P. Fenoxaprop-ethyl alone failed to control common bermudagrass while the addition of fluazifop-P to fenoxaprop-ethyl improved control at least 22% in two of three years. Quizalofop applied EP and fenoxaprop applied sequentially provided common bermudagrass control equivalent to fluazifop-P. Fenoxaprop-ethyl or sethoxydim applied once or twice controlled common bermudagrass similarly. Peanut yield increases from common bermudagrass control were erratic.

Keywords

Clethodim, (E,E)-(±)-2-[1-[[(3-chloro-2-propenyl)oxy]imino]propyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-onefenoxaprop,(±)-2-[4-[(6-chloro-2-benzoxazolyl)oxy]phenoxy]propanoic acidfenoxaprop-ethyl, ethyl-(±)-2-[4-[(6-chloro-2-benzoxazolyl)-oxy]phenoxy]propanoatefluazifop-P,(R)-2-[4-[[5-(trifluoromethyl)-2-pyridinyl]oxy]phenoxy]propanoic acidquizalofop, (±)-2-[4[(6-chloro-2-quinoxalinyl)oxy]phenoxy]propanoic acidsethoxydim, 2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-oneUBI 1956, (±)-tetrahydrofurfuryl (R)-2-[4-(6-chloroquinoxalin-2-yloxy)phenoxy] propanoatecommon bermudagrass, Cynodon dactylon (L.) Pers. # CYNDApeanut Arachis hypogaea L. ‘Florunner,’ ‘Pronto.’Clethodimfenoxapropfluazifop-PquizalofopsethoxydimUBI-1956CYNDA
Type
Research
Information
Weed Technology , Volume 9 , Issue 4 , December 1995 , pp. 825 - 828
Copyright
Copyright © 1995 by the Weed Science Society of America 

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