e-journal
Atrazine Herbicide Best Management Practices for the Little Arkansas River Watershed
Summary.
Atrazine is used widely in the Little Arkansas River watershed for weed control in corn and grain sorghum. The herbicide provides cost-effective weed control and has wide application flexibility. In recent years there have been concerns about the levels of atrazine moving from corn and grain sorghum fields into surface waters. The movement of atrazine from crop fields is determined by the chemical properties of atrazine; soil and site characteristics; tillage practices; application timing and methods; and rainfall duration, intensity, and timing. K-State researchers have studied the effect of various management practices on atrazine runoff and have determined those BMPs that, when adopted by farmers, will minimize atrazine runoff. The greatest reduction will be achieved by using a combination of BMPs. Farmers should select the BMPs for their field that fit within their management system, are economical, and are most effective in reducing atrazine runoff.
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