Which of the following is NOT listed as a factor affecting the degradation of pesticides?

• A. Temperature
• B. Availability of microorganisms
• C. Color of the spray container
• D. Soil pH

Answer: (C)

Pesticide degradation depends on environmental conditions and biological activity. Temperature affects the rate of chemical reactions and how fast microorganisms can work, so higher or lower temperatures can speed up or slow down breakdown. The availability of microorganisms is directly tied to biodegradation, since these organisms break down pesticides as part of their metabolism. Soil pH influences hydrolysis and the composition of microbial communities, altering how quickly a pesticide degrades in soil. The color of the spray container does not influence these environmental and biological processes, so it isn’t a factor in degradation.