Why might you add an adjuvant to a pesticide tank mix?

• A. To minimize absorption
• B. To increase the application rate
• C. To make the product stick better
• D. To reduce residue on surfaces

Answer: (C)

Adding an adjuvant to a pesticide tank mix is about changing how the product interacts with the target surface. The main idea is to make the product stick to leaves or other surfaces more effectively, so more of it stays where pests are and has a better chance to work rather than running off. Surfactants help the spray wet and spread across the surface, while stickers create a tacky film that resists being washed away by rain, irrigation, or dew. This improved adhesion and coverage can boost efficacy. The other options don’t align with the goal: adjuvants aren’t primarily used to reduce absorption, raise the application rate, or lower residue.