How does temperature influence pesticide application effectiveness?

Higher temperatures can significantly influence the behavior of pesticides in the atmosphere, particularly in terms of evaporation and drift. When temperatures rise, the rate of evaporation for liquid pesticides typically increases. This means that the pesticide can vaporize more quickly than intended, potentially leading to a loss of active ingredients before they reach the target area.

Additionally, increased temperatures can contribute to the phenomenon known as "drift," where pesticide particles are carried away from the intended target area by wind or thermal currents. This not only reduces the effectiveness of the application but can also lead to unintended exposure to nearby crops, plants, or sensitive environments.

Understanding the relationship between temperature and pesticide behavior is crucial for aerial applicators, as it helps them make informed decisions about the timing and techniques used for applications. By recognizing that higher temperatures can increase both evaporation and drift risks, applicators can take necessary precautions such as adjusting application rates, using different formulations, or planning applications during cooler times of the day to enhance effectiveness and minimize environmental impact.