What is an important consideration when applying pesticides near water bodies?

An important consideration when applying pesticides near water bodies is to avoid runoff and ensure that the pesticide does not harm aquatic life. This is crucial because water bodies are ecosystems that can be severely impacted by chemical pollutants. Pesticides, if they enter these bodies of water, can lead to toxicity in fish and other aquatic organisms, disrupt the food chain, and ultimately degrade water quality.

By being mindful of runoff, pesticide applicators can implement practices such as choosing appropriate application techniques, selecting less harmful products, and monitoring weather conditions to prevent any adverse effects. These actions contribute to the protection of aquatic habitats and maintain environmental safety, making it a fundamental principle in pesticide application near water bodies.

Other considerations in the options provided would not effectively enhance environmental stewardship or address safety concerns. For instance, increasing the dosage does not necessarily correlate with better effectiveness; in many cases, it could heighten the risk of environmental harm. Applying pesticides during heavy rainfall can actually exacerbate runoff issues, while using only non-selective pesticides could be detrimental as they may affect non-target organisms as well, further threatening biodiversity. Hence, focusing on minimizing runoff and potential harm to aquatic life remains the most responsible approach.