What are the two types of pesticide drift?

The two types of pesticide drift are best categorized as vapor drift and spray or dust particle drift. Vapor drift occurs when pesticide vapors evaporate and move away from the intended application site, often carried by air currents. This can result in unintended exposure to non-target areas or organisms.

On the other hand, spray or dust particle drift refers to the physical movement of pesticide droplets or particles away from the target area during or shortly after application. Factors that contribute to this include wind speed, droplet size, and the application technique used.

Understanding these two types of drift is crucial for pest control professionals to minimize off-target movement, which can lead to environmental contamination and unintended harm to non-target species or plants. This knowledge also aids in adhering to regulatory requirements and ensuring safe application practices.