Wyoming Pesticide Applicator Certification Practice Test

Which formulation is typically used in right-of-way applications to reduce chances of drift to nontarget plants?

1. Granules

2. Wettable Powders

3. Invert Emulsions

4. Ready-to-use Aerosols

The correct answer is: Invert Emulsions

In right-of-way applications, it is important to reduce the chances of drift to nontarget plants, which is when the herbicide unintentionally lands on and harms nearby plant life. Granules and wettable powders are both solid formulations and may not provide enough control over spray drift compared to liquid formulations. Ready-to-use aerosols may be more convenient, but they are also more prone to drift due to their smaller droplet size. Invert emulsions, on the other hand, are specifically designed to minimize drift and are commonly used in right-of-way applications for this reason. By providing this context, it is clear that invert emulsions are the most suitable formulation for reducing drift to nontarget plants in right-of-way applications.