What is the effect of high humidity on pesticide application?

High humidity can significantly influence the dynamics of pesticide application. When humidity levels are elevated, it can enhance the absorption of the pesticide by plants or surfaces. This means that the active ingredients in the pesticide are more likely to penetrate plant tissues effectively, which can lead to better pest control outcomes.

However, high humidity also creates an environment conducive to fungal disease development. Many fungi thrive in moist conditions, and if the humidity level is too high, it can lead to increased risk of diseases that affect plants, especially if the pesticide has been applied, as the moisture can provide an optimal environment for pathogens. Therefore, while the absorption of pesticides may improve under high humidity, the risk of promoting unwanted fungal diseases is a critical consideration that applicators must manage.