How does temperature affect spray coverage and evaporation?

• A. Higher temperatures increase evaporation and drift risk; cooler temperatures reduce evaporation and improve deposition
• B. Higher temperature reduces drift
• C. Temperature has no effect
• D. Cooler temps increase evaporation

Answer: (A)

Temperature affects how quickly the spray evaporates, which directly shapes coverage and drift. In warmer conditions, droplets evaporate faster in the air and on surfaces, so less of the product reaches the target and more can drift away as tiny droplets carried by air currents. Cooler conditions slow evaporation, allowing droplets to stay liquid longer and deposit more evenly on the target, improving coverage and reducing drift. In short, higher temperatures tend to reduce deposition and increase drift, while cooler temperatures improve deposition and lower drift.