STP1078

    Evaluation of Cyclodextrin Complexes of Pesticides for Use in Minimization of Groundwater Contamination

    Published: Jan 1990


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    Abstract

    Recently, concern over the contamination of groundwater by pesticides has mounted. The cyclodextrin complexes of a number of pesticides most frequently implicated in groundwater contamination have been prepared.

    Initial pesticide efficacy studies have been conducted using conventional application technologies with various preemergence herbicides (as both commercial formulations and cyclodextrin complexes) under greenhouse conditions. The leachability and persistence of the newly formulated herbicides in the soil profile were also measured utilizing bioassay indicator crops in the analyses. Cyclodextrin formulations of atrazine and simazine were prepared only under forcing conditions and had very low levels of biological activity. A cyclodextrin formulation of metribuzin was somewhat less active than the commercial formulation, possibly as a result of controlled release properties.

    Keywords:

    chemigation, herbicide, atrazine, metribuzin, simazine, β-cyclodextrin, formulation, controlled release, Texas panicum, Florida beggarweed, smallflower morningglory


    Author Information:

    Dailey, OD
    research chemistresearch agronomistplant physiologist, Southern Regional Research Center, USDA, ARSNematodes, Weeds, and Crops Research Unit, USDA, ARS, Georgia Coastal Plain Experiment Station, New OrleansTifton, LAGA

    Dowler, CC
    research chemistresearch agronomistplant physiologist, Southern Regional Research Center, USDA, ARSNematodes, Weeds, and Crops Research Unit, USDA, ARS, Georgia Coastal Plain Experiment Station, New OrleansTifton, LAGA

    Glaze, NC
    research chemistresearch agronomistplant physiologist, Southern Regional Research Center, USDA, ARSNematodes, Weeds, and Crops Research Unit, USDA, ARS, Georgia Coastal Plain Experiment Station, New OrleansTifton, LAGA


    Paper ID: STP25368S

    Committee/Subcommittee: E35.22

    DOI: 10.1520/STP25368S


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