MDARD Michigan Core Pesticide Applicator Practice Exam

Which technique is recommended for reducing pesticide drift during application?

1. Selecting nozzles for larger droplet size

2. Using higher application speeds

3. Applying during windy conditions

4. Increasing boom height

The correct answer is: Selecting nozzles for larger droplet size

Choosing nozzles designed for larger droplet sizes is a highly effective technique for reducing pesticide drift during application. Larger droplets are less likely to become airborne and therefore reduce the potential for drift over long distances. This is particularly important when applying pesticides in areas near sensitive crops, water bodies, or residential areas, where drift can cause unintended damage or contamination. The method of selecting appropriate nozzle types focuses on optimizing the physical characteristics of the spray. Nozzles that produce larger droplets help to minimize the formation of smaller droplets that are more susceptible to being carried away by wind or air currents. This precise management of droplet size is fundamental to both effective pest control and environmental protection. In contrast, other approaches such as using higher application speeds or applying during windy conditions can increase the likelihood of pesticide drift, as they may lead to finer droplets being generated or enable existing droplets to be more easily displaced. Similarly, increasing boom height can also contribute to drift by allowing droplets to fall from a greater distance, potentially breaking apart or moving off-target during their descent.