Is it true or false that relative humidity must be recorded for pesticide application by professional applicators?

Relative humidity is indeed a critical factor that must be recorded during pesticide application by professional applicators. This is primarily because humidity levels can significantly influence the efficacy and behavior of pesticides in the environment. High humidity can slow evaporation rates, which might affect how long the pesticide remains active on the target zone, while low humidity can result in rapid evaporation, potentially leading to decreased effectiveness and increased drift.

Knowing the relative humidity can aid applicators in choosing the right time for application, thus maximizing the effectiveness of the pesticide while minimizing possible environmental impacts and health risks. Recording relative humidity is therefore a part of best management practices in pesticide application, ensuring that applicators adhere to guidelines for safe and effective use.