What type of pesticide formulation is a dry powder that forms a suspension in water?

The correct answer is a wettability powder. This type of pesticide formulation is specifically designed as a dry powder that can be easily mixed with water to form a suspension. Wettability powders are often used in applications where a uniform distribution of the pesticide in water is necessary for effective pesticide application on various surfaces.

Wettability powders are formulated to ensure that they can disperse in water without clumping, allowing for better coverage and adherence on the target area. The ability to achieve a suspension rather than just a mixture is essential for ensuring that the active ingredient is effectively delivered to the pest and can act accordingly.

Understanding this type of formulation is crucial for proper mixing and application, as it allows for consistency in performance and helps in preventing issues that could arise from inadequate mixing or uneven application.