Which practice is a core principle of IPM?

• A. Monitor pest populations before taking action
• B. Apply pesticides on a fixed schedule
• C. Use broad-spectrum pesticides
• D. Ignore habitat changes

Answer: (A)

Monitoring pest populations before taking action is a fundamental practice in Integrated Pest Management. By regularly scouting and collecting data, you learn what pests are present, how many are there, and how they’re behaving. This lets you determine if action is actually needed using action thresholds, so controls are applied only when pests exceed that level. With this information, you can choose the most effective, economical, and least disruptive method, and often combine cultural, mechanical, biological, and targeted chemical options to minimize harm to non-target organisms and the environment.

Spraying on a fixed schedule ignores pest pressure and wastefully exposes people and the environment to chemicals. Using broad-spectrum pesticides disrupts beneficial species and can drive resistance, undermining long-term control. Ignoring habitat changes misses simple, powerful ways to reduce pest problems, such as sanitation, exclusion, and habitat modification. Monitoring first keeps decisions data-driven and aligned with IPM goals.