Which weather condition should prompt postponement due to drift risk?

Which weather condition should prompt postponement due to drift risk?

• A. Temperature is above label limit
• B. A temperature inversion has been observed
• C. Fog is rolling into area
• D. The day is clear and sunny

Answer: (C)

Fog rolling into the area should prompt postponement because it creates poor visibility and a near-surface, moist air layer that can carry and suspend spray droplets unpredictably. When you can’t clearly see the target or off-target areas, and the air near the ground is moist with light gusts, droplets are more likely to drift beyond the intended area. Waiting until the fog lifts helps protect nearby crops and sensitive sites and keeps applications within the labeled target area. Temperature being higher than the label limit isn’t about drift itself, and while a temperature inversion is a drift risk, fog provides a more immediate, visible cue that makes postponement prudent. A clear, sunny day reduces drift risk, so it’s not a reason to delay.

Fog rolling into the area should prompt postponement because it creates poor visibility and a near-surface, moist air layer that can carry and suspend spray droplets unpredictably. When you can’t clearly see the target or off-target areas, and the air near the ground is moist with light gusts, droplets are more likely to drift beyond the intended area. Waiting until the fog lifts helps protect nearby crops and sensitive sites and keeps applications within the labeled target area.

Temperature being higher than the label limit isn’t about drift itself, and while a temperature inversion is a drift risk, fog provides a more immediate, visible cue that makes postponement prudent. A clear, sunny day reduces drift risk, so it’s not a reason to delay.