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Potential Controlled-Release Herbicides from 2,4-D Esters of Starches

Published online by Cambridge University Press:  12 June 2017

C. L. Mehltretter ,
W. B. Roth ,
F. B. Weakley ,
T. A. McGuire  and
C. R. Russell
C. L. Mehltretter
Affiliation:
U.S. Dep. of Agr., N. Reg. Res. Lab., Peoria, IL 61604
W. B. Roth
Affiliation:
U.S. Dep. of Agr., N. Reg. Res. Lab., Peoria, IL 61604
F. B. Weakley
Affiliation:
U.S. Dep. of Agr., N. Reg. Res. Lab., Peoria, IL 61604
T. A. McGuire
Affiliation:
U.S. Dep. of Agr., N. Reg. Res. Lab., Peoria, IL 61604
C. R. Russell
Affiliation:
U.S. Dep. of Agr., N. Reg. Res. Lab., Peoria, IL 61604
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Abstract

Unmodified, cyanoethylated, and crosslinked corn starches were reacted with 2,4-dichlorophenoxyacetyl chloride in pyridine to produce the corresponding 2,4-D [(2,4-dichlorophenoxy)acetic acid]esters of high acyl content. Hydrolysis studies at pH 6 and 8 at ambient temperature showed that these insoluble compositions liberated varying amounts of 2,4-D and soluble 2,4-D esters by ester link and glucoside bond cleavage, respectively, at rates that indicate their possible use as controlled-release herbicides.

Type
Research Article
Information
Weed Science , Volume 22 , Issue 5 , September 1974 , pp. 415 - 418
Copyright
Copyright © 1974 by the Weed Science Society of America 

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