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Postemergence Grass Control in Peanut (Arachis hypogaea)

Published online by Cambridge University Press:  12 June 2017

W. James Grichar  and
Thurman E. Boswell
W. James Grichar
Affiliation:
Tex. Agric. Exp. Stn., Plant Disease Res. Stn., Box 755, Yoakum, TX 77995
Thurman E. Boswell
Affiliation:
Tex. Agric. Exp. Stn., Plant Disease Res. Stn., Box 755, Yoakum, TX 77995
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Abstract

CGA 82725 {2-propynyl [2-[4-[(3,5-dichloro-2-pyridinyl)oxy)] phenoxy] propanoate}, haloxyfop {2-[4-[[3-chloro-5-(trifluoromethyl)-2-pyridinyl] oxy]phenoxy] propanoic acid}, sethoxydim {2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one}, and fluazifop {(±)-2-[4-[[5-(trifluoromethyl)-2-pyridinyl] oxy] phenoxy] propanoic acid} were applied postemergence to Texas panicum (Panicum texanum Buckl. # PANTE), large crabgrass [Digitaria sanguinalis (L.) Scop. # DIGSA], and broadleaf signalgrass [Brachiaria platyphylla (Griseb.)Nash. # BRAPP] in peanut (Arachis hypogaea L. ‘Florunner’). Fluazifop applied at 280 and 410 g ai/ha, sethoxydim at 340 g ai/ha, haloxyfop at 140 g ai/ha, and CGA 82725 at 280 g ai/ha usually gave better control when applied to annual grasses in the two- to four-leaf stage than when applied at the six- to eight-leaf stage. Higher rates of application were required to provide acceptable weed control at the later stage of growth. Peanut yields were usually higher following the early applications, indicating that timing of application is important in obtaining improved yields.

Keywords

Annual grassesPanicum texanumDigitaria sanguinalisBrachiaria platyphyllaPANTEDIGSABRAPP
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 34 , Issue 4 , July 1986 , pp. 587 - 590
Copyright
Copyright © 1986 by the Weed Science Society of America 

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References

Literature Cited

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