How should you manage pest resistance to pesticides?

• A. Rotate modes of action, follow label rates, integrate non-chemical controls, and avoid over-reliance on a single product.
• B. Use the same product indefinitely.
• C. Ignore label rates.
• D. Only rely on cultural controls.

Answer: (A)

Managing pest resistance to pesticides hinges on reducing the selection pressure that favors resistant pests. The best approach combines rotating pesticides with different modes of action, following label rates to ensure effective, not sublethal, doses, and incorporating non-chemical controls to lower overall pest pressure. Using the same product repeatedly lets resistant individuals survive and reproduce, speeding up resistance development. Sublethal exposure can occur when rates are too low or timing is off, so sticking to labeled rates helps maintain long-term control. Cultural, biological, and other non-chemical strategies complement chemical controls and help keep resistance in check; relying on those alone is usually not enough for effective management. An integrated strategy that blends chemical rotation, proper application, and non-chemical measures is the best way to manage resistance.