Which of the following formulations requires the most agitation?

Wettable powders require the most agitation due to their formulation characteristics. These powders are made up of fine particles that do not dissolve in water but instead disperse. When mixed with water, they can settle at the bottom of a spray tank if not kept in suspension. As a result, consistent agitation is necessary to ensure that the product remains uniformly mixed throughout the application process, preventing uneven distribution of the pesticide and reducing the efficacy of pest control.

In contrast, emulsifiable concentrates typically mix well with water, creating a stable emulsion that requires less ongoing agitation. Granular formulations are designed to be applied directly to the soil or plant surface and do not require mixing with water, thus eliminating the need for agitation. Liquid solutions are already in a uniform state and easily mix with water without the need for extensive agitation, making them much easier to handle.

Therefore, the demand for wettable powders to maintain proper suspension through continuous agitation highlights their unique formulation and the challenges associated with their application.