What are the two types of pesticide drift?

• A. Vapor Drift & Particle Drift
• B. Vapor Drift
• C. Particle Drift
• D. Drift

Answer: (A)

Drift occurs in two main ways: vapor drift and particle drift. Vapor drift happens when the pesticide evaporates after application and moves as a gas with air currents, which is more likely with highly volatile products or under warm conditions. Particle drift is the movement of spray droplets or dust particles through the air, driven by wind or turbulence, and is influenced by droplet size and application technique. The option that names both forms is the best answer because it covers the two distinct pathways pesticides can travel away from the target. The other choices either name only one type or use a vague term that doesn’t differentiate the two mechanisms.