Invert systems or polymers are used to accomplish what effect?

• A. They intensify spray drift
• B. They reduce the efficacy of herbicides
• C. They thicken the spray so it sinks and adheres to underwater foliage, requiring specialized blending equipment
• D. They sterilize water

Answer: (C)

Invert systems and polymers change how a spray behaves in water by thickening it, which makes the spray more viscous. This increased viscosity lets the spray sink toward submerged vegetation and stick to underwater foliage, rather than just spreading on the surface or drifting away. Because achieving the right thickness and maintaining stability in water requires careful mixing, specialized blending equipment is needed to prepare and apply the product correctly. This approach is about improving contact with underwater plants, not about increasing drift, reducing efficacy, or sterilizing water.