How do higher temperatures and lower humidity affect pesticide evaporation rates?

Higher temperatures and lower humidity levels significantly increase pesticide evaporation rates. When temperatures rise, the kinetic energy of pesticide molecules increases, causing them to vaporize more readily. Additionally, lower humidity means that the air can hold more moisture, creating conditions that facilitate the evaporation of the pesticide into the atmosphere.

This effect is critical for understanding pesticide application, as it can influence both the effectiveness of the treatment and the potential for off-target movement, which can have environmental consequences. Understanding the dynamics of evaporation rates in response to temperature and humidity helps applicators make informed decisions regarding the timing and conditions of pesticide application to optimize their effectiveness while minimizing risks.