What is a disadvantage of wettable powders?

Wettable powders contain finely ground solid particles that are mixed with water to create a suspension for application. One notable disadvantage of these products is that they can cause significant wear on spray equipment due to the abrasive nature of the powder. As these particles are sprayed through nozzles and other components of the sprayer, they can lead to increased wear and tear over time, potentially affecting the efficiency and longevity of the equipment.

This characteristic necessitates that applicators carefully maintain their equipment and may need to invest in parts that can withstand the abrasive effects of wettable powders. Additionally, ensuring that equipment is thoroughly cleaned after use can help minimize damage.

The other options reflect characteristics that do not accurately classify the typical disadvantages of wettable powders. Some wettable powders do have limited solubility, but they are designed to be mixed with water rather than being overly soluble. They can generally be mixed with other compatible pesticides, and standard pressure systems are often sufficient for their application, though there may be specific cases where higher pressure is beneficial.