Texas Pesticide Applicator Practice Exam

Which formulation has the least potential for drift during application?

1. Dust

2. Granular

3. Wettable powder

4. Emulsifiable concentrate

The correct answer is: Granular

Granular formulations have the least potential for drift during application due to their physical characteristics. Granules are larger and heavier particles that do not easily become airborne, making them less susceptible to being carried by wind or air currents. This quality allows for more targeted application, ensuring that the pesticide stays in the intended area and minimizes the risk of off-target drift. In contrast, dust formulations consist of fine particles that can be easily lifted and dispersed by even light winds, increasing the likelihood of drift. Wettable powders, when mixed with water, create a sprayable solution, which can also become subject to drift if not applied correctly, especially if the droplet size is not managed. Emulsifiable concentrates can produce very fine droplets, which are also highly prone to drift, particularly in windy conditions. Hence, granular formulations stand out as the most appropriate choice when it comes to minimizing drift during pesticide application.