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Influence of Adjuvants on Efficacy of Clethodim

Published online by Cambridge University Press:  12 June 2017

David L. Jordan ,
P. Roy Vidrine ,
James L. Griffin  and
Daniel B. Reynolds
David L. Jordan
Affiliation:
Northeast Res. Stn., P.O. Box 438, St. Joseph, LA 71366
P. Roy Vidrine
Affiliation:
Dean Lee Res. Stn., Alexandria, LA 71302
James L. Griffin
Affiliation:
Dep. Plant Pathol. and Crop Physiol., Baton Rouge, LA 70803
Daniel B. Reynolds
Affiliation:
Northeast Res. Stn., St. Joseph, LA 71366
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Abstract

Field experiments evaluated barnyardgrass, broadleaf signalgrass, and rhizomatous johnsongrass control with clethodim applied with Agri-Dex® crop oil concentrate at 1.0% v/v, the adjuvant Dash® at 1.0% v/v, the methylated seed oil Sun-It II® at 1.0% v/v, a blend of silicone surfactant plus methylated seed oil (Dyne-Amic® at 0.5% v/v) or nonionic surfactant (Kinetic® HV at 0.125% v/v), two silicone surfactants (Sylgard® 309 and Silwet L-77® surfactant) at 0.125% v/v, two other conventional nonionic surfactants (Latron AG-98™ and Induce®) at 0.25% v/v, and the acidified soya phospholipid LI-700®. When compared with the conventional nonionic or silicone-based surfactants and LI-700, clethodim at 70 g ai/ha controlled barnyardgrass more effectively when applied with Dash or Sun-It II. Broadleaf signalgrass and rhizomatous johnsongrass were controlled more effectively when clethodim was applied with Agri-Dex, Dash, Sun-It II, or Dyne-Amic. Clethodim at 70 g/ha applied with Dash or Sun-It II controlled grasses equally or greater than clethodim at 140 g/ha.

Keywords

Clethodim, (E,E)-(±)-2-[1-[[(3-chloro-2-propenyl)oxy]imino]propyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-onebarnyardgrass, Echinochloa crus-galli (L.) Beauv. # ECHCGbroadleaf signalgrass, Brachiaria platyphylla (Griseb.) Nash # BRAPPjohnsongrass, Sorghum halepense (L.) Pers. # SORHAAcidified soya phospholipidcrop oil concentratemethylated seed oilnonionic surfactantsilicone surfactantBrachiaria platyphyllaEchinochloa crus-galliSorghum halepenseBRAPPECHCGSORHA
Type
Research
Information
Weed Technology , Volume 10 , Issue 4 , December 1996 , pp. 738 - 743
Copyright
Copyright © 1996 by the Weed Science Society of America 

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References

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