Indiana Pesticide Applicator Core Practice Exam

Which is a disadvantage of using granule formulations?

1. Less drift risk than dusts

2. Potential to roll on steep slopes

3. Low dermal hazards

4. No agitation needed

The correct answer is: Potential to roll on steep slopes

The choice regarding the potential for granule formulations to roll on steep slopes highlights a notable disadvantage related to their physical properties and behavior during application. Granules are larger and heavier than other pesticide formulations, which makes them prone to movement when placed on uneven terrain. This movement can lead to uneven distribution and can potentially cause non-target areas to be treated inadvertently, leading to environmental issues and ineffective pest control. While there are benefits associated with granule formulations, such as decreased risk of drift compared to dusts—meaning they are less likely to be carried away by wind and thus pose less risk to non-target organisms—this characteristic does not eliminate the concern of their application on sloped surfaces. Furthermore, granules typically have low dermal toxicity, which is beneficial for applicator safety, and they also do not require agitation, which simplifies the application process. However, these advantages do not negate the importance of understanding how granules behave in specific environmental conditions, particularly when it comes to slope stability and potential runoff. This highlights the careful consideration that must be taken when selecting the best formulation to use in various landscapes.