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Leaf Wash Techniques for Estimation of Foliar Absorption of Herbicides

Published online by Cambridge University Press:  12 June 2017

Malcolm D. Devine ,
Hank D. Bestman ,
Chris Hall  and
William H. Vanden Born
Malcolm D. Devine
Affiliation:
Dep. Plant Sci., Univ. of Alberta, Edmonton, Alta., Canada T6G 2P5
Hank D. Bestman
Affiliation:
Dep. Plant Sci., Univ. of Alberta, Edmonton, Alta., Canada T6G 2P5
Chris Hall
Affiliation:
Dep. Plant Sci., Univ. of Alberta, Edmonton, Alta., Canada T6G 2P5
William H. Vanden Born
Affiliation:
Dep. Plant Sci., Univ. of Alberta, Edmonton, Alta., Canada T6G 2P5
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Abstract

Three wash techniques, each with 1, 10, or 95% (v/v) ethanol:water were used to measure foliar absorption of 14C-glyphosate [N-(phosphonomethyl)glycine], 14C-3,6-dichloropicolinic acid, and 14C-chlorsulfuron {2-chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino] carbonyl] benzenesulfonamide} in Tartary buckwheat [Fagopyrum tataricum (L.) Gaertn. ♯3 FAGTA], Canada thistle [Cirsium arvense (L.) Scop. ♯ CIRAR], and barley (Hordeum vulgare L. ‘Galt’). For the herbicides and species tested, the most suitable common procedure for determining absorption consisted of a double or triple rinse with or immersion in 10% ethanol. Wiping the treated leaves with cotton balls moistened with the solvent was much less effective. Efficiency of herbicide removal by a given solvent was not related consistently to solubility of the herbicide in the solvent.

Keywords

Fagopyrum tataricumHordeum vulgareCirsium arvenseglyphosate3,6-dichloropicolinic acidchlorsulfuronFAGTACIRAR
Type
Special Topics
Information
Weed Science , Volume 32 , Issue 3 , May 1984 , pp. 418 - 425
Copyright
Copyright © 1984 by the Weed Science Society of America 

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References

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