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    Author(s): Jerry L. Michael; Daniel G. Neary
    Date: 1993
    Source: Environmental Toxicology and Chemistry, 12(1993):4045-410.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (125 KB)

    Description

    Results of research on the movement of bexazinone, imazapyr, picloram, and sulfometuron in first-order watersheds in the southern United States are presented. Herbicides contaminate surface waters to varying degrees, depending on application rate, method of application, product formulation, and site-spezific characteristics. Highest concentrations are observed in streams in ephemeral pulses during the first three storm events after application. Streamside management zones greatly reduce the amount of herbicide entering streams from forestry applications. Soil persistence of herbicides is highly variable and a function of many site characteristics. Plant residues have been monitored and found to dissipate rapidly, with half-lives <40 d.

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    Citation

    Michael, Jerry L.; Neary, Daniel G. 1993. Herbicide Dissipation Studies in Southern Forest Ecosystems. Environmental Toxicology and Chemistry, 12(1993):4045-410.

    Keywords

    Hexazinone, Imazapyr, Picloram, Sulfometuron methyl, Fate

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