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Comparing Techniques for Quantifying Haloxyfop Absorption and Translocation in Johnsongrass (Sorghum halepense)

Published online by Cambridge University Press:  12 June 2017

Robert S. Peregoy ,
Lynn M. Kitchen ,
James L. Griffin  and
Michael P. Braverman
Robert S. Peregoy
Affiliation:
Dep. of Plant Pathol. and Crop Physiol., 302 Life Sci. Bldg., Baton Rouge, LA 70803
Lynn M. Kitchen
Affiliation:
Dep. of Plant Pathol. and Crop Physiol., 302 Life Sci. Bldg., Baton Rouge, LA 70803
James L. Griffin
Affiliation:
Dep. of Plant Pathol. and Crop Physiol., 302 Life Sci. Bldg., Baton Rouge, LA 70803
Michael P. Braverman
Affiliation:
Dep. of Plant Pathol. and Crop Physiol., 302 Life Sci. Bldg., Baton Rouge, LA 70803
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Abstract

In comparing laboratory techniques, absorption and translocation of 14C-haloxyfop was not affected by droplet size or treatment area. Treatment with haloxyfop prior to application of 14C-haloxyfop resulted in 27% less translocation of radiolabel from the treated leaf and 43% less acropetal translocation compared with plants receiving only the radiolabeled herbicide. Leaf washing with distilled water, distilled water plus haloxyfop, distilled water plus surfactant, distilled water plus haloxyfop plus surfactant, 100% ethanol, 100% methanol, or methanol:water (1:1 v/v) removed similar amounts of radiolabel, while chloroform removed more. Considering some of the differences found with these techniques, pretreatment with nonlabeled herbicide should be routine practice and water used as the standard solvent.

Keywords

Haloxyfop, 2-[4-[[3-chloro-5-(trifluoromethyl)-2-pyridinyl]oxy]phenoxy]propanoic acidjohnsongrass, Sorghum halepense (L.) Pers. # SORHAMethodologyradiolabeled herbicidesolvents
Type
Research
Information
Weed Technology , Volume 9 , Issue 3 , September 1995 , pp. 462 - 467
Copyright
Copyright © 1995 by the Weed Science Society of America 

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References

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