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Optimizing Alcohol Ethoxylate Surfactant Activity at Low Doses

Published online by Cambridge University Press:  12 June 2017

Jerry M. Green
Jerry M. Green*
Affiliation:
DuPont Agricultural Products, Stine-Haskell Research Center, Newark, DH 19714-0030. E-mail: jerry.m.green@usa.dupont.com
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Abstract

Certain linear alcohol ethoxylate surfactants with large hydrophobes enhanced nicosulfuron activity on giant foxtail (Setaria faberi) more effectively at low doses than surfactants with small hydrophobes and commercial standards. The most effective surfactants had a C16–18 hydrophobe and 12 to 30 moles of ethoxylation or a C24 hydrophobe with 13 moles of ethoxylation. Response curve analysis showed these linear alcohol ethoxylate surfactants were five- to 20-fold more active on a dose basis than currently used commercial surfactants.

Keywords

Nicosulfuron, 2-[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]-N,N-dimethyl-3-pyridinecarboxamidegiant foxtail, Setaria faberi HerrmAdjuvantnonylphenol ethoxylatepetroleum crop oil concentratemodified seed oilmethylated seed oilnonionic surfactantsilicone surfactantCOC, petroleum crop oil concentrateEO, number of ethylene oxidesMSO, modified seed oil
Type
Research
Information
Weed Technology , Volume 13 , Issue 4 , December 1999 , pp. 737 - 740
Copyright
Copyright © 1999 by the Weed Science Society of America 

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References

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