Which term describes the thickening adjuvant used to increase droplet size and reduce drift?

• A. Drift
• B. Drift-reduction additive
• C. Droplet Spectrum
• D. Even flat-fan pattern

Answer: (B)

Droplet behavior in spraying is managed by additives that change how big the droplets become. Thickening adjuvants increase droplet size, which raises settling speed and makes droplets less likely to drift with willowy air currents. The term used for this kind of product is drift-reduction additive, a label-friendly way to describe additives that reduce off-target movement by enlarging droplets.

That’s why this option fits: drift describes the unwanted movement itself, not the product type; droplet spectrum refers to the range of droplet sizes produced, not a specific additive; and even flat-fan pattern is about the nozzle’s spray pattern, not an adjuvant. In practice, using a drift-reduction additive can help target deposition, but you still need to consider environmental conditions, nozzle type, and application rate to ensure good coverage.