Potential controlled-release herbicides from 2,4-D esters of starches
1974
Mehltretter, C.L. | Roth, W.B. | Weakley, F.B. | McGuire, T.A. | Russell, C.R.
Unmodified, cyanoethylated and crosslinked maize starches were reacted with 2,4-dichlorophenoxyacetyl chloride in pyridine to produce the corresponding 2,4-D esters of high acyl content. Hydrolysis studies at pH 6 and 8 at ambient temp. 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. From summary.
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