Which option lists three practices of resistant management?

Which option lists three practices of resistant management?

• A. Use an IPM program; Use pesticides only when needed; Rotate pesticides with different modes of action
• B. Increase pesticide use; Use only one pesticide; Do not rotate
• C. Use natural predators only; Do not use pesticides; Rotate among same mode
• D. Apply pesticides indiscriminately; Use multiple pesticides in same mode; Increase application rate

Answer: (A)

Resistance management aims to slow or prevent pests from adapting to chemicals by reducing the selective pressure they face and using diverse control tactics. An integrated pest management (IPM) approach combines cultural, biological, and chemical methods and uses pesticides only when monitoring shows action is needed. Rotating pesticides with different modes of action is crucial because it means pests encounter chemicals that attack them in different ways, making it harder for a resistant population to survive and reproduce. Taken together, these practices support sustainable control and preserve chemical effectiveness over time. The best option reflects all three of these resistant-management ideas: using an IPM program, applying pesticides only when needed, and rotating pesticides with different modes of action. Why the other choices don’t fit: increasing pesticide use without rotation increases the selection pressure on pests and accelerates resistance; relying on a single pesticide with no rotation is similarly prone to resistance development; relying only on natural predators and avoiding pesticides, even with some rotation of the same mode, doesn’t provide the diversified chemical strategy that helps manage resistance; indiscriminate pesticide use, mixing multiple pesticides in the same mode, or increasing application rates all heighten selection pressure and speed resistance.

Resistance management aims to slow or prevent pests from adapting to chemicals by reducing the selective pressure they face and using diverse control tactics. An integrated pest management (IPM) approach combines cultural, biological, and chemical methods and uses pesticides only when monitoring shows action is needed. Rotating pesticides with different modes of action is crucial because it means pests encounter chemicals that attack them in different ways, making it harder for a resistant population to survive and reproduce. Taken together, these practices support sustainable control and preserve chemical effectiveness over time.

The best option reflects all three of these resistant-management ideas: using an IPM program, applying pesticides only when needed, and rotating pesticides with different modes of action.

Why the other choices don’t fit: increasing pesticide use without rotation increases the selection pressure on pests and accelerates resistance; relying on a single pesticide with no rotation is similarly prone to resistance development; relying only on natural predators and avoiding pesticides, even with some rotation of the same mode, doesn’t provide the diversified chemical strategy that helps manage resistance; indiscriminate pesticide use, mixing multiple pesticides in the same mode, or increasing application rates all heighten selection pressure and speed resistance.