Off-site movement of hexazinone in stormflow and baseflow from forest watersheds. Neary, D. G. Weed Science, 1983.
Off-site movement of hexazinone in stormflow and baseflow from forest watersheds. [pdf]Paper  abstract   bibtex   
Four forest watersheds in the upper Piedmont of Georgia were treated with hexazinone pellets at a rate of 1.68 kg ai/ha. Twenty-six storms were monitored to determine movement of hexazinone and two of its metabolites in runoff. Residues peaked in the first storm after application (442 + 53 p/bw), and declined with subsequent storms in a power curve function. Loss of hexazinone averaged 0.53 percent of the applied herbicide, with two storms accounting for 59.3 percent of the chemical exported. Subsurface movement of hexazinone appeared in streamflow 3 to 4 months after application and produced an additional loss of 0.05 percent.

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