Pesticide Applicator Practice Test – Pass the Wisconsin Exam in 2025

Using low-drift nozzles, applying at low wind speeds, and avoiding temperature inversions is the most effective method to minimize pesticide drift during application. Low-drift nozzles are designed to create larger droplets, which are less susceptible to being carried away by wind. Applying at low wind speeds helps to ensure that the pesticide remains on the target area instead of being dispersed into the air. Additionally, avoiding temperature inversions is crucial because these conditions can trap pesticides close to the ground and promote off-target movement.

In contrast, using high-drift nozzles and applying at high wind speeds increases the likelihood of drift due to smaller droplets being created and the force of wind carrying them further from the target area. Similarly, applying pesticides only in the middle of the day can contribute to higher evaporation rates and potential drift issues when temperatures are high. Finally, applying during thunderstorms poses significant risks, as strong winds and turbulent air can lead to substantial drift, making it unsafe and ineffective.