Which condition might reduce the effectiveness of pesticide application?

High wind speed during pesticide application can significantly reduce the effectiveness of the treatment. Wind can cause the spray to drift away from the target area, leading to uneven coverage of the pesticide, which means that the intended pests may not receive a sufficient dose for effective control. Additionally, drift can pose risks to non-target organisms, including beneficial insects, plants, and even humans nearby, making it not only a technical issue but also a safety concern.

Using high-quality products, applying during early morning hours, and utilizing technical knowledge on pests are practices that generally enhance the effectiveness and safety of pesticide applications. High-quality products are formulated to be more effective, applying in the early morning can mitigate evaporation and drift, and having technical knowledge helps ensure that the right product is chosen for the specific pest and application scenario.