Monitoring Herbicide Residues in Springflow After an Operational Application of Hexazinone

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Parts of two forested watersheds (440 ac and 482 ac) in central Tennessee were aerially treated with 15 lb/ac of hexazinone pellets (10-percent active ingredient) to remove hardwood competition prior to establishing loblolly pine (Pinus taeda L.). Both treated watersheds and a control were monitored to determine if hexazinone residues were entering ground water and appearing in springflow. Seven months of monitoring included two intensively sampled periods during application and the first storm. No detectable residues of hexazinone or its two primary metabolites were measured in samples from a watershed in which hexazinone was applied up to 66 ft. from the monitoring point. Springflow samples from a watershed treated a year earlier (in 1980) were also clear of herbicide residues.

Document Type: Journal Article

Affiliations: Soil Scientist, Intensive Management Practices Assessment Center, Southeastern Forest Experiment Station, USDA Forest Service, University of Florida, Gainesville 32601

Publication date: November 1, 1983

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  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Southern Journal of Applied Forestry covers an area from Virginia and Kentucky south to as far west as Oklahoma and east Texas.
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