Which of the following formulations do not dissolve in water?

Emulsifiable concentrates are formulations that do not dissolve in water. Instead, they consist of chemical compounds mixed in oil or another solvent, which allows them to form an emulsion when mixed with water. In practice, this means that when an emulsifiable concentrate is added to water, it disperses and creates a stable mixture but does not actually dissolve as true solutions would.

Wettable powders and soluble powders, on the other hand, do dissolve in water. Wettable powders, while they may not completely dissolve, can be suspended in water to create a homogeneous mixture, allowing for effective application. Soluble powders dissolve completely in water, resulting in a solution that is uniform throughout.

Understanding these distinctions is important for effective herbicide application and management, as each formulation behaves differently in water and can affect the efficacy and environmental impact of the herbicide used.