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

  • C. L. Mehltretter (a1), W. B. Roth (a1), F. B. Weakley (a1), T. A. McGuire (a1) and C. R. Russell (a1)...

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.

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

  • C. L. Mehltretter (a1), W. B. Roth (a1), F. B. Weakley (a1), T. A. McGuire (a1) and C. R. Russell (a1)...

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