Which practice is not recommended when using fluridone?

• A. Large-scale or whole lake treatments
• B. Flowing water and spot treatments
• C. Low concentration with long contact time
• D. Follow annual limits based on acre size

Answer: (B)

Fluridone works best when it is distributed across a large, relatively still treatment area so it remains in the water long enough for plants to absorb it. Flowing water moves quickly, dilutes the chemical, and carries it downstream, which makes it hard to achieve uniform coverage and effective control. Spot treatments in moving water create patchy results and can require extra applications, defeating the purpose of the slow-release, broad-area approach. Large-scale or whole-lake treatments align with how fluridone is meant to be used, with low concentrations over a longer contact time to achieve systemic uptake by the plants. And always applying within the annual limits based on acre size ensures you stay within label guidelines and protect non-target organisms.