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Herbicide-Oil-Water Emulsions

Published online by Cambridge University Press:  12 June 2017

Frank A. Manthey ,
John D. Nalewaja  and
Edward F. Szelezniak
Frank A. Manthey
Affiliation:
Crop and Weed Sci. Dep., N. D. State Univ., Fargo, ND 58105
John D. Nalewaja
Affiliation:
Crop and Weed Sci. Dep., N. D. State Univ., Fargo, ND 58105
Edward F. Szelezniak
Affiliation:
Inst. Soil Sci. Plant Cultiv., Pulawy, Poland
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Abstract

Oil-water emulsion stability was determined for crop origin and refinement of seed oils and their methyl esterified fatty acids (methylated seed oil) as influenced by emulsifiers and herbicides. Oil-in-water emulsion stability of one-refined, degummed, and crude seed oils was affected by the emulsifier. However, emulsion stability of methylated seed oil was not affected by the refinement of the seed oil used to produce the methylated seed oil or by the emulsifier. Oils without emulsifiers or emulsifiers alone added to formulated herbicide-water emulsions reduced emulsion stability depending upon the herbicide and emulsifier. Further, emulsion stability of formulated herbicides plus oil adjuvants was influenced by the oil type, the emulsifier in the oil adjuvant, and the herbicide. Oil-in-water emulsions improved or were not affected by increasing concentration of the emulsifier in the oil. However, T-Mulz-VO at a concentration greater than 10% with soybean oil or 5% with methylated soybean oil reduced emulsion stability with sethoxydim. Emulsion stability of herbicides with adjuvants depends upon the herbicide, the emulsifier, emulsifier concentration, and the crop origin, type, and refinement of oil.

Keywords

Sethoxydim, 2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl-3-hydroxy-2-cyclohexen-1-onesoybean, Glycine max (L.)Merr.Emulsifiersmethylated seed oilsbentazonfluazifop-Pquizalofopsethoxydim
Type
Research
Information
Weed Technology , Volume 3 , Issue 1 , March 1989 , pp. 13 - 19
Copyright
Copyright © 1989 by the Weed Science Society of America 

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References

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