What is the term for the physical movement of pesticides to non-target sites during application?

Drift is the term used to describe the physical movement of pesticides to non-target sites during application. This can occur when small pesticide particles or droplets are carried by wind away from the intended treatment area. Understanding drift is crucial for applicators since it can affect nearby sensitive areas, such as water bodies, gardens, and wildlife habitats. It emphasizes the importance of applying pesticides under appropriate weather conditions and following best practices to minimize unintended consequences.

Runoff refers to the movement of water, along with any dissolved substances, over the surface of the land, usually into nearby water bodies, especially after rainfall.

Leaching is the process where water-soluble pesticides or nutrients move down through the soil profile, potentially reaching groundwater.

Volatilization involves the transformation of liquid pesticides into vapor, which allows them to enter the atmosphere and possibly deposit on non-target areas downwind.

While each term relates to pesticide movement or transformation, drift specifically focuses on the airborne displacement of particles or droplets during application.