Which statement reflects prudent chemical control in IPM?

• A. Use Pesticides Only When Pest Populations Exceed Thresholds
• B. Use Pesticides On a Fixed Schedule
• C. Use Pesticides Only on Beneficial Insects
• D. Use Pesticides At Any Sight

Answer: (A)

In IPM, the aim is to use pesticides only when necessary based on actual pest pressure, after careful monitoring. This approach relies on thresholds—when pest populations or damage reach a level that could cause economic loss if not controlled, intervention is warranted. By applying treatments only at or above that point, you minimize unnecessary chemical use, preserve natural enemies, reduce the risk of resistance, and lower environmental impact. The idea is to act in response to measured need rather than on a set schedule or sight alone.

That’s why using pesticides only when pest populations exceed thresholds is the best choice. The other options ignore real pest pressure or misuse chemicals (fixed schedules apply pesticides without regard to current levels, and applying only on beneficials or at any sight is impractical and harmful to the IPM balance).