What can increase pesticide volatilization during application?

High ambient temperatures can lead to an increase in pesticide volatilization during application. When temperatures rise, the molecules of the pesticide become more energized, which causes them to move more quickly and can facilitate their transition from a liquid state to a gaseous state. As a result, more pesticide vapors can enter the atmosphere, increasing the likelihood of off-target movement and potential environmental impacts.

In contrast, cool temperatures generally reduce the energy of the pesticide molecules, thereby diminishing volatility. High humidity levels can also mitigate volatilization as the presence of moisture in the air may reduce evaporation rates. Lastly, low wind conditions can lead to a buildup of pesticide vapors in the immediate vicinity of the application site, but it is the high ambient temperatures that primarily drive increased volatilization. Understanding these factors is critical in ensuring effective and responsible pesticide application.