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Phytotoxicity of Flumetsulam on Peanut (Arachis hypogaea)

Published online by Cambridge University Press:  12 June 2017

W. Carroll Johnson III  and
Benjamin G. Mullinix Jr.
W. Carroll Johnson III
Affiliation:
USDA-ARS and Agric. Res. Stat., Univ. of Georgia, Coastal Plain Exp. Stn., Tifton, GA 31793-0748
Benjamin G. Mullinix Jr.
Affiliation:
USDA-ARS and Agric. Res. Stat., Univ. of Georgia, Coastal Plain Exp. Stn., Tifton, GA 31793-0748
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Abstract

Field studies were conducted at Tifton, GA to quantify phytotoxicity of flumetsulam on peanut as influenced by application rate and timing in a weed free experiment. Flumetsulam PPI at rates up to 0.14 kg ai/ha visibly injured peanut and reduced canopy width, but injury from PPI flumetsulam at 0.07 kg/ha or less was no worse than a standard early postemergence (EPOST) treatment of bentazon (0.6 kg ai/ha) plus paraquat (0.14 kg ai/ha). Flumetsulam EPOST at rates up to 0.07 kg/ha visibly injured peanut and reduced peanut canopy width. Flumetsulam injury at rates of 0.035 kg/ha EPOST was similar to that caused by bentazon plus paraquat. Interactive effects of PPI and EPOST flumetsulam reduced early and mid-season pod and foliage biomass more than either application alone. However, peanut recovered with final yields not affected by flumetsulam, regardless of rate or time of application.

Keywords

Bentazon, 3-(1-methylethyl)-(1H)-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxideflumetsulam, N-(2,6-difluorophenyl)-5-methyl[1,2,4]triazolo[1,5-α]pyrimidine-2-sulfonamideparaquat, 1,1′-dimethyl-4,4′-bipyridinium ionpeanut, Arachis hypogaea L. ‘Florunner.’Herbicide phytotoxicitypeanut injury
Type
Research
Information
Weed Technology , Volume 10 , Issue 3 , September 1996 , pp. 481 - 487
Copyright
Copyright © 1996 by the Weed Science Society of America 

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References

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