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Tropic Croton (Croton glandulosus) Control in Peanut (Arachis hypogaea)

Published online by Cambridge University Press:  12 June 2017

John W. Wilcut
John W. Wilcut*
Affiliation:
Tidewater Agric. Exp. Stn., Va. Polytech. Inst. & State Univ., Suffolk, VA 23437
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Abstract

Field studies in 1988 and 1989 evaluated POST herbicides alone and in tank-mixtures for tropic croton control in peanut. Acifluorfen + 2,4-DB, acifluorfen + bentazon, acifluorfen + bentazon + 2,4-DB controlled > 90% of tropic croton when applied at 2 or 4 wk after crop emergence. Paraquat + bentazon controlled 55% at 2 wk and 24% at 4 wk after crop emergence. Imazethapyr and imazethapyr + 2,4-DB controlled < 24% tropic croton at either 2 or 4 wk after crop emergence. Acifluorfen + 2,4-DB, acifluorfen + bentazon, and acifluorfen + bentazon + 2,4-DB controlled at least 90% of the common lambsquarters, common ragweed, and morningglory species. Greatest yields and net returns were obtained with acifluorfen + bentazon + 2,4-DB applied 2 wk after crop emergence. Yields were higher with acifluorfen + bentazon + 2,4-DB and imazethapyr applied at 2 wk after crop emergence than at 4 wk after crop emergence. All other herbicide treatments provided equivalent yields among application timings. Only acifluorfen + 2,4-DB provided equivalent net returns at either application timing. All other herbicide treatments provided lower net returns with applications made at 4 wk than at 2 wk after crop emergence.

Keywords

acifluorfen, 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acidbentazon, 3-(1-methylethyl)-(1H)-2,1,3-benzothiadiazin-4-(3H)-one 2,2-dioxideimazethapyr, (±)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-ethyl-3-pyridinecarboxylic acidparaquat, 1,1′-dimethyl-4,4′-bipyridinium ion2,4-DB, 4-(2,4-dichlorophenoxy)butanoic acidtropic croton, Croton glandulosus var. septentrionalis Muell.-Arg. ♯ CVNGScommon lambsquarters, Chenopodium album L. ♯ CHEALcommon ragweed, Ambrosia artemisiifolia L. ♯ AMBELmorningglory species, Ipomoea spp.Economic analysisnet returnsAMBELCHEALCVNGSIPOZZ
Type
Research
Information
Weed Technology , Volume 5 , Issue 4 , December 1991 , pp. 795 - 798
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

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