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Antagonism of Johnsongrass (Sorghum halepense) Control with Fenoxaprop, Haloxyfop, and Sethoxydim by 2,4-D

Published online by Cambridge University Press:  12 June 2017

Thomas C. Mueller ,
William W. Witt  and
Michael Barrett
Thomas C. Mueller
Affiliation:
Dep. Agron., Univ. Ky., Lexington, KY 40546
William W. Witt
Affiliation:
Dep. Agron., Univ. Ky., Lexington, KY 40546
Michael Barrett
Affiliation:
Dep. Agron., Univ. Ky., Lexington, KY 40546
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Abstract

Johnsongrass control in the field was greater with fenoxaprop or haloxyfop than with sethoxydim in 1985 and 1986. Johnsongrass control was reduced under field and greenhouse conditions by adding a dimethylamine salt of 2,4-D. Generally, the antagonism was overcome by increasing the rate of fenoxaprop, haloxyfop, or sethoxydim. Sethoxydim showed less antagonism from 2,4-D than did fenoxaprop or haloxyfop in the greenhouse.

Keywords

Fenoxaprop, ethyl ester of (±)-2-[4-] (6-chloro-2-benzoxazoly)oxy] phenoxy] propanoic acidhaloxyfop, methyl ester of 2-(4-[[3-chloro-5-trifluoromethyl)-2-pyridinyl]oxy]phenoxy]propanoic acidsethoxydim, 2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one2,4-D, (2,4-dichlorophenoxy)acetic acidjohnsongrass, Sorghum halepense (L.)Pers. #3 SORHAInteractiontank mixtures
Type
Research
Information
Weed Technology , Volume 3 , Issue 1 , March 1989 , pp. 86 - 89
Copyright
Copyright © 1989 by the Weed Science Society of America 

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References

Literature Cited

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