Under IPM principles, chemical control should be used only after which two conditions are met?

Under IPM principles, chemical control should be used only after which two conditions are met?

• A. Pest identification and when the threshold is exceeded
• B. Pest identification only
• C. Threshold exceeded only
• D. Pest presence regardless of identification

Answer: (A)

In IPM, you don’t spray until you’ve both identified the pest and confirmed that the pest level justifies control. Knowing exactly what pest you’re dealing with ensures you choose the right product and method, and confirming that the population or damage has reached the action threshold (the point where control is cost-effective or necessary) prevents unnecessary treatments. So chemical control is used only after accurate pest identification and after the threshold is exceeded. Spraying for presence alone, or for identification alone, can lead to ineffective results, resistance, and unnecessary environmental impact.

In IPM, you don’t spray until you’ve both identified the pest and confirmed that the pest level justifies control. Knowing exactly what pest you’re dealing with ensures you choose the right product and method, and confirming that the population or damage has reached the action threshold (the point where control is cost-effective or necessary) prevents unnecessary treatments. So chemical control is used only after accurate pest identification and after the threshold is exceeded. Spraying for presence alone, or for identification alone, can lead to ineffective results, resistance, and unnecessary environmental impact.