What is pesticide mobility?

• A. The ability of a pesticide to move through the air, water, and soil.
• B. The rate at which a pesticide degrades in the soil.
• C. The amount of pesticide needed for treatment.
• D. The tendency of a pesticide to bind to soil particles.

Answer: (A)

Mobility is about how easily a pesticide can move away from where it’s applied, through air, water, and soil. It encompasses processes like volatilization into the air, dissolution and transport by water, and movement through the soil itself. This makes the ability to move through air, water, and soil the best description of mobility. Degradation rate in soil describes persistence, not movement; the amount needed for treatment is the application rate, not movement; and binding to soil particles relates to sorption, which affects mobility but isn’t the definition of mobility itself. Understanding mobility helps explain where a pesticide might go beyond the target area and the potential for groundwater or surface water contamination.