When applying pesticides, which practice is crucial for mitigating harm to the environment?

Properly calibrating equipment is essential for mitigating harm to the environment when applying pesticides. Calibration ensures that the pesticide application equipment delivers the correct amount of product at the appropriate rate. This precision helps to minimize excess application, which can lead to environmental contamination, such as runoff into waterways or negative impacts on non-target organisms.

When equipment is not calibrated correctly, it can result in over-application or uneven distribution of the pesticide. This not only increases the risk of harmful residues in the environment but also contributes to the development of pesticide resistance in pests, as they may be exposed to sub-lethal doses. Therefore, proper calibration is vital for effective pest control while protecting the ecosystem and reducing the potential for environmental damage.

In contrast, other practices listed, such as choosing the cheapest option, applying the maximum amount, or applying during rainy weather, can significantly increase environmental risks and are not responsible approaches to pesticide application.