Which dry/solid formulation requires constant agitation and may be abrasive to pumps and nozzles?

The formulation that requires constant agitation and may be abrasive to pumps and nozzles is wettable powders. Wettable powders are fine, dry formulations that need to be mixed with water to create a suspension for effective application. Due to their powdery nature, they can settle quickly and require continuous stirring or agitation to keep them evenly distributed in the tank. This helps prevent clumping and ensures a uniform application.

Additionally, because of their abrasive properties, wettable powders can wear down pumps and nozzles over time, which is an important consideration for equipment maintenance. This characteristic makes it essential for applicators to monitor their equipment closely to ensure consistent performance and to minimize wear.

In contrast, dusts are typically lighter and may not require the same level of agitation. Granules and pellets are larger and generally less abrasive, making them easier on application equipment and often allowing for more straightforward applications without constant stirring.