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Comparison of Imazethapyr and Paraquat-Based Weed Control Systems in Peanut (Arachis hypogaea)

Published online by Cambridge University Press:  12 June 2017

Timothy L. Grey ,
Glenn R. Wehtje ,
Robert H. Walker  and
Krishna P. Paudel
Timothy L. Grey
Affiliation:
Dep. Agron. Soils, and Grad. Res. Asst. Dep. Agric. Econ. Rural Sociol. and Alabama Agric. Exp. Stn., Auburn Univ., Auburn, AL 36849
Glenn R. Wehtje
Affiliation:
Dep. Agron. Soils, and Grad. Res. Asst. Dep. Agric. Econ. Rural Sociol. and Alabama Agric. Exp. Stn., Auburn Univ., Auburn, AL 36849
Robert H. Walker
Affiliation:
Dep. Agron. Soils, and Grad. Res. Asst. Dep. Agric. Econ. Rural Sociol. and Alabama Agric. Exp. Stn., Auburn Univ., Auburn, AL 36849
Krishna P. Paudel
Affiliation:
Dep. Agron. Soils, and Grad. Res. Asst. Dep. Agric. Econ. Rural Sociol. and Alabama Agric. Exp. Stn., Auburn Univ., Auburn, AL 36849
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Abstract

Field studies were conducted from 1991 through 1993 to compare Weed control, peanut tolerance, yield, and net return from imazethapyr applied alone or in combination with paraquat. Sicklepod and Florida beggarweed were controlled with paraquat early POST followed by a POST application of either paraquat with 2,4-DB or paraquat with 2,4-DB and bentazon. Imazethapyr-based early POST treatments offered no improvement. An early POST application of paraquat with bentazon or imazethapyr was required for maximum control of bristly starbur. Imazethapyr applied alone early POST, with no further treatment, provided optimum yellow nutsedge control. Maximum yield and net return were associated with any paraquat-containing early POST-applied treatment followed by one of the tank mixed POST options.

Keywords

Bentazon, 3-(1-methylethyl)-(1H)-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxideimazethapyr, 2-[4,5-dihydro-4-methyl-4-(1-methyethyl)-5-oxo-1H-imidazol-2-yl]-5-ethyl-3-pyridineearboxylic acidparaquat, 1,1′-dimethyl-4,4′-bipyridinium ion2,4-DB, 4-(2,4-dichlorophenoxy)butanoic acidbristly starbur, Acanthospermum hispidum DC. # ACNHIFlorida beggarweed, Desmodium tortuosum (Sw.) DC. # DEDTOsicklepod, Senna obtusifolia L. # CASOByellow nutsedge, Cyperus esculentus L. # CYPESpeanut, Arachis hypogaea L. ‘Florunner.’Net returnweed managementbentazon2,4-DBAcanthospermum hispidumCyperus esculentusDesmodium tortuosumSenna obtusifoliaACHNICASOBCYPESDEDTO
Type
Research
Information
Weed Technology , Volume 9 , Issue 4 , December 1995 , pp. 813 - 818
Copyright
Copyright © 1995 by the Weed Science Society of America 

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References

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