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Grass Control in Soybean (Glycine max) with Graminicides Applied Alone and in Mixtures

Published online by Cambridge University Press:  12 June 2017

P. Roy Vidrine ,
Daniel B. Reynolds  and
David C. Blouin
P. Roy Vidrine
Affiliation:
Dean Lee Res. Stn., 8105 E. Campus, Alexandria, LA 71302
Daniel B. Reynolds
Affiliation:
Northeast Res. Stn., Box 438, St. Joseph, LA 71366
David C. Blouin
Affiliation:
Dep. Exp. Stat., Baton Rouge, LA 70803
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Abstract

Field studies were conducted to determine rhizomatous johnsongrass and barnyardgrass control with clethodim, quizalofop-P-ethyl, fluazifop-P, sethoxydim, fenoxaprop-ethyl, and quizalofop-P-tefuryl applied alone and with lactofen, imazaquin, chlorimuron, and fomesafen. Graminicides applied alone controlled johnsongrass and barnyardgrass 83 to 99%. Of the graminicides evaluated, clethodim was the most susceptible to decreased grass control in mixture with broadleaf herbicides. Imazaquin and chlorimuron were most antagonistic of the broadleaf herbicides toward the activity of graminicides. Clethodim mixed with imazaquin reduced johnsongrass control as much as 64% and mixed with chlorimuron reduced barnyardgrass control as much as 52%. Quizalofop-P-tefuryl was least affected by broadleaf herbicides and fomesafen was least antagonistic in mixture with graminicides.

Keywords

fenoxaprop-ethyl, ethyl (±)-2-[4-[(6-chloro-2-benzoxazolyl)oxy]phenoxy]propanoatebarnyardgrass, Echinochloa crus-galli (L.) Beauv. # ECHCGjohnsongrass, Sorghum halepense (L.) Pers. # SORHAAntagonismherbicideinteractionEchinochloa crus-galliSorghum halepenseECHCGSORHA
Type
Research
Information
Weed Technology , Volume 9 , Issue 1 , March 1995 , pp. 68 - 72
Copyright
Copyright © 1995 by the Weed Science Society of America 

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