What precautionary measures should be taken when applying pesticides near water sources?

When applying pesticides near water sources, it is crucial to avoid application on windy days and use buffer zones. Windy conditions can cause pesticides to drift away from the intended target area, increasing the risk of contamination of nearby water sources. Drift can lead to unintended environmental impacts, including harm to aquatic life and the degradation of water quality.

Buffer zones are areas that are left untreated between the application site and the water source. These zones are essential for protecting the water and minimizing runoff, as they can absorb excess pesticides and prevent them from reaching the water. Establishing these protective measures not only helps in safeguarding water quality but also ensures compliance with regulations designed to protect water resources.

In contrast, increasing pesticide dosage could lead to more severe environmental contamination, applying at night may not mitigate the risk of drift, and conducting applications during heavy rainfall can lead to wash-off and runoff, both of which pose significant risks to water bodies. These practices go against the foundational principles of responsible pesticide use and environmental stewardship.