What does WP stand for in the context of pesticide formulations?

In the context of pesticide formulations, "WP" stands for Wettable Powder. This formulation type consists of finely ground solid materials that do not dissolve in water but can be suspended in water when mixed. Wettable powders are formulated to provide effective coverage of the target pest when applied, as they can be agitated in a spray solution to create a uniform suspension. This ensures that the pesticide adheres to the surfaces of plants or areas being treated and allows for effective pest control.

Wettable powders are advantageous because they often allow for greater flexibility in application rates and can minimize issues like residue build-up compared to some liquid formulations. Their use is common in various agricultural settings.

The other choices do not accurately reflect the meaning of the abbreviation WP within pesticide formulations. "Waterproof Powder" might imply a formulation resistant to water but does not exist in official terminology. "Wet Processed" and "Waxy Powder" do not correspond to any recognized pesticide formulations either and hence are not appropriate definitions in this context.