Which of the following is not a type of pesticide formulation?

• A. Wettable powder
• B. Soluble powder
• C. Microencapsulated
• D. Surfactant

Answer: (D)

Understanding how pesticides are delivered helps you see why certain terms are used. A pesticide formulation is the way the active ingredient is packaged and carried to the target, which affects how it behaves when applied. Wettable powder is a dry material that forms a suspension in water for spraying. Soluble powder dissolves completely in water before use. Microencapsulated formulations coat the active ingredient in tiny capsules for controlled release and sometimes better stability or drift reduction. A surfactant, however, isn’t a standalone pesticide formulation type. It’s an adjuvant added to spray solutions to improve coverage, wetting, or penetration. While surfactants may be included in some products, they don’t by themselves constitute a pesticide formulation that carries an active ingredient.