Which scenario is least aligned with resistance management?

Which scenario is least aligned with resistance management?

• A. Rotating pesticides to prevent resistance
• B. Using products with different modes of action
• C. Monitoring pest populations and rotating
• D. Repeating the same mode of action repeatedly

Answer: (D)

Resistance management aims to slow the evolution of pest resistance by spreading selection pressure across multiple tools and keeping the pest populations susceptible. Rotating pesticides to cover different modes of action and using products with varying modes of action are both ways to diversify that pressure, making it harder for pests to build resistance. Monitoring pest populations and guiding rotations based on what you find helps catch shifts early and adjust tactics before resistance becomes widespread. Repeating the same mode of action repeatedly, however, keeps applying the same weapon against the pests. This creates strong, consistent selection pressure for any pests that already have or develop resistance to that mechanism, allowing resistant individuals to thrive and rapidly dominate the population. That's why this scenario is least aligned with resistance management.

Resistance management aims to slow the evolution of pest resistance by spreading selection pressure across multiple tools and keeping the pest populations susceptible. Rotating pesticides to cover different modes of action and using products with varying modes of action are both ways to diversify that pressure, making it harder for pests to build resistance. Monitoring pest populations and guiding rotations based on what you find helps catch shifts early and adjust tactics before resistance becomes widespread.

Repeating the same mode of action repeatedly, however, keeps applying the same weapon against the pests. This creates strong, consistent selection pressure for any pests that already have or develop resistance to that mechanism, allowing resistant individuals to thrive and rapidly dominate the population. That's why this scenario is least aligned with resistance management.