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Foliar Absorption and Phytotoxicity of Quizalofop with Lipid Compounds

Published online by Cambridge University Press:  12 June 2017

Frank A. Manthey ,
Edward F. Szelezniak ,
Zbigniew M. Anyszka  and
John D. Nalewaja
Frank A. Manthey
Affiliation:
Dep. Crop and Weed Sci., now Res. Assoc., Dep. Cereal Sci. and Food Technol., N.D. State Univ., Fargo, ND 58105
Edward F. Szelezniak
Affiliation:
Inst. Soil Sci. Plant Cultiv., Pulawy, Poland
Zbigniew M. Anyszka
Affiliation:
Akademia Rolnicza, ul. Mazowiecka, Poznan, Poland
John D. Nalewaja
Affiliation:
Dep. Crop and Weed Sci., N.D. State Univ., Fargo, ND 58105
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Abstract

Experiments were conducted to determine the effect of triglycerides, free fatty acids (FFA), and fatty acid methyl esters (FAME) on the foliar absorption, translocation, and phytotoxicity of quizalofop. Absorption, translocation, and phytotoxicity of quizalofop in oats were greater when quizalofop was applied with FFA or FAME than with their respective triglycerides. Triglycerides and FFA generally enhanced quizalofop absorption and translocation more when they contained unsaturated than saturated fatty acids. Methylation of the fatty acids reduced differences among fatty acids, but methyl stearate and methyl linolenate enhanced absorption of quizalofop less than the other FAME for oats and yellow foxtail. Quizalofop absorption and phytotoxicity to oats were greater when applied with sunflower oil, sunflower oil FFA, and sunflower oil FAME than with the corresponding linseed oil derivatives. Emulsifier generally reduced differences between linseed oil and sunflower oil derivatives in their enhancement of absorption, translocation, and phytotoxicity of quizalofop.

Keywords

Quizalofop, (±)-2-[4[(6-chloro-2-quinoxalinyl)-oxy]phenoxy]propanoic acidoats, Avena sativa L. ‘Moore’linseed, Linum usitatissimum L.sunflower, Helianthus annuus L.yellow foxtail, Setaria glauca (L.) Beauv. #3 SETLUAdditivesadjuvantsdiluentseed oilvegetable oiloatsSETLU
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 40 , Issue 4 , December 1992 , pp. 558 - 562
Copyright
Copyright © 1992 by the Weed Science Society of America 

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