What is the major cause of vapor drift in pesticide application?

The major cause of vapor drift in pesticide application is associated with a pesticide having high volatility, which means it can easily convert into vapor at relatively low temperatures. When a pesticide is highly volatile, it can produce vapors that can drift away from the intended application area, especially in significant quantities. This is particularly concerning because these vapors can pose risks to non-target plants, animals, and even human health, as they can travel significant distances depending on environmental conditions like temperature, humidity, and air currents.

In contrast, a pesticide with low volatility does not readily convert into vapor, reducing the risk of drift. Windy conditions can exacerbate drift but are not the primary cause since even in calm conditions, highly volatile chemicals can still pose a risk. Misapplication generally pertains to improper techniques or rates and can lead to issues like runoff but does not specifically relate to vapor drift caused by the inherent properties of the pesticide itself. Understanding these factors is crucial for safe and responsible pesticide application practices.