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Primary Linear Alcohol Ethoxylates as Adjuvants for Primisulfuron

Published online by Cambridge University Press:  12 June 2017

Cheryl L. Dunne ,
Greg R. Gillespie  and
Peter J. Porpiglia
Cheryl L. Dunne
Affiliation:
CIBA-GEIGY Corp., 7145 58th Ave., Vero Beach, FL 32967
Greg R. Gillespie
Affiliation:
CIBA-GEIGY Corp., 7145 58th Ave., Vero Beach, FL 32967
Peter J. Porpiglia
Affiliation:
CIBA-GEIGY Corp., 7145 58th Ave., Vero Beach, FL 32967
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Abstract

Greenhouse experiments were conducted to evaluate the effect of carbon chain length and percent ethoxylation of primary linear ethoxylated alcohols on postemergence control of johnsongrass and quackgrass with primisulfuron. Control of johnsongrass and quackgrass was greatest with primisulfuron plus the experimental ethoxylated alcohols 1412-60 and 1412-70 which had chain lengths of 14 and 12 carbon atoms (60:40 ratio) and 60 or 70% ethoxylation. Control of these two weed species decreased when primisulfuron was applied with ethoxylated linear alcohols of similar chain lengths but decreased percent ethoxylation or with alcohols of similar percent ethoxylation but decreased carbon chain length. Quackgrass and johnsongrass control with primisulfuron plus 1412-60 or 1412-70 was equal to or greater than the control obtained with primisulfuron plus the commercial adjuvants of the nonionic, organosilicone, sunflower methyl ester, or crop oil concentrate types. The experimental adjuvant 1412-70 provided equal or greater uptake and translocation of 14C-primisulfuron in johnsongrass and quackgrass compared to four commercial adjuvants.

Keywords

Primisulfuron, 2-[[[[[4,6-bis(difluoromethoxy)-2-pyrimidinyl]amino]carbonyl]amino]sulfonyl]benzoic acidJohnsongrass, Sorghum halepense (L.) Pers. # SORHAquackgrass, Elytrigia repens (L.) Nevski #AGREEAdditivesabsorptiontranslocationsurfactantSORHAAGREESorghum halepenseElytrigia repens
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 42 , Issue 1 , March 1994 , pp. 82 - 85
Copyright
Copyright © 1994 by the Weed Science Society of America 

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References

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