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Selective Postemergence Herbicidal Control of Johnsongrass (Sorghum halepense) in Soybeans (Glycine max)

Published online by Cambridge University Press:  12 June 2017

B. A. Swisher  and
George Kapusta
B. A. Swisher
Affiliation:
Plant and Soil Sci. Dep., Southern Illinois Univ., Carbondale, IL 62901
George Kapusta
Affiliation:
Plant and Soil Sci. Dep., Southern Illinois Univ., Carbondale, IL 62901
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Abstract

Two yr of field research were conducted to evaluate the efficacy of BAS-9021 {2-[1-(N-allyloxyamino)butylidene]-5,5-dimethyl-4-methoxycarbonylcyclohexane-1,3-dione, Na salt}, HOE 29152 {methyl 2-[4-(4-trifluoromethylphenoxy)phenoxy]propanoate}, and mefluidide N-[2,4-dimethyl-5-[[(trifluoromethyl)sulfonyl] amino] phenyl] acetamide as selective herbicides applied postemergence to johnsongrass [Sorghum halepense (L.) Pers.]. All three herbicides afforded 85% or greater control of rhizome johnsongrass in one experiment in 1977, where repeat applications were made and ideal growing conditions prevailed. HOE 29152 also afforded excellent control with a single application made at the boot stage of johnsongrass. In a second experiment in 1977, when drought conditions prevailed, HOE 29152 was the only herbicide that afforded 70% or greater control of the johnsongrass. Both BAS-9021 and mefluidide afforded less than 60% control of johnsongrass in the single 1978 experiment, when evaluated at the end of the season. This study also was subject to drought conditions throughout the growing season.

Keywords

BAS-9021HOE 29152mefluididerhizome johnsongrass
Type
Research Article
Information
Weed Science , Volume 28 , Issue 5 , September 1980 , pp. 529 - 534
Copyright
Copyright © Weed Science Society of America 

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References

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