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Johnsongrass (Sorghum halepense) Control in Soybeans (Glycine max) with Postemergence Herbicides

Published online by Cambridge University Press:  12 June 2017

William G. Johnson  and
Robert E. Frans
William G. Johnson
Affiliation:
Dep. Agron., Altheimer Lab., Univ. Arkansas, Fayetteville, AR 72701
Robert E. Frans
Affiliation:
Dep. Agron., Altheimer Lab., Univ. Arkansas, Fayetteville, AR 72701
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Abstract

Field studies were conducted in 1987 and 1988 at Fayetteville and Clarkedale, AR, to evaluate various herbicide treatments for johnsongrass control in soybeans. Herbicide treatments were postemergence applications of sethoxydim, fenoxaprop, fluazifop-P, haloxyfop, quizalofop, imazethapyr, and clethodim. No significant soybean injury was noted in 1987 or 1988 at either location in the johnsongrass experiments. All treatments except those with fenoxaprop and imazethapyr, provided 70 to 90% johnsongrass control. Generally, soybean yields were reduced from treatments that controlled less than 60% of the johnsongrass.

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 acidfluazifop-P, (R)-2-[4-[[5-(trifluoromethyl)-2-pyridinyl]oxy]phenoxy]propanoic acidhaloxyfop, 2-[4-[[3-chloro-5-(trifluoromethyl)-2-pyridinyl]oxy]phenoxy]propanoic acidimazethapyr, (±)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-ethyl-3-pyridinecarboxylic acidquizalofop, (±)-2-[4-[(6-chloro-2-quinoxalinyl)oxy]phenoxy]propanoic acidsethoxydim, 2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-onejohnsongrass, Sorghum halepense (L.) Pers. ♯ SORHAsoybeans Glycine max (L.) Merr. ‘Centennial’ and ‘Forrest’Clethodimfenoxapropfluazifop-PhaloxyfopimazethapyrquizalofopsethoxydimSORHA
Type
Research
Information
Weed Technology , Volume 5 , Issue 1 , March 1991 , pp. 87 - 91
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

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