What can contribute to pesticide runoff into water bodies?

Heavy rainfall after pesticide application is a significant factor that contributes to pesticide runoff into water bodies. When excessive rain occurs shortly after pesticides are applied, the water can wash away the chemicals from the treated areas into nearby streams, rivers, and lakes. This runoff can lead to contamination of aquatic ecosystems, posing risks to wildlife and human health.

The timing of rainfall relative to pesticide application is crucial, as even a small amount of rain can lead to runoff if the soil is saturated or if the surface is already wet. Understanding the weather conditions surrounding pesticide application is vital for minimizing environmental impact and ensuring the effectiveness of the pest control strategy employed.