How is a granule different from a pellet in pesticide formulations?

The distinction that makes the correct answer valid is rooted in the physical characteristics of granules and pellets in pesticide formulations. Pellets are indeed more uniform in both size and shape compared to granules. This uniformity is important as it can influence the distribution of the pesticide when applied, leading to more consistent application rates and effectiveness across a treated area. The uniform structure of pellets allows for better control during the manufacturing process and ensures that each application delivers a similar amount of active ingredient.

In contrast to this, granules can vary in size and shape, which can lead to uneven distribution when applied. This difference in uniformity is significant for effective pest management, as consistent application is key to achieving the desired pest control outcomes.

Considering the other potential choices, while granules can vary in size, and there may be differences in concentration of active ingredients based on formulation, these aspects do not capture the primary contrast between these two types of formulations as clearly as their uniformity does. Thus, the focus on size and shape is what establishes pellets as the more standardized option in pesticide formulations.