Volatility refers to?

• A. Color of the pesticide
• B. Soil binding
• C. Stability in water
• D. Evaporation potential

Answer: (D)

Volatility describes how readily a pesticide becomes a vapor. It’s governed by vapor pressure—the higher the vapor pressure, the more likely the chemical will evaporate from surfaces, plants, or soil into the air. This evaporation potential is what volatility is measuring in practice, and it helps explain why some pesticides can drift or volatilize, increasing inhalation exposure or off-target deposition, especially in warm conditions. The other options aren’t about turning into vapor: color is cosmetic, soil binding refers to adsorption to soil particles, and stability in water concerns persistence or hydrolysis in aquatic environments. So evaporation potential best captures the concept of volatility.