Which of the following is a reason for pesticide failure?

• A. Incorrect Pesticide Dosage
• B. Pest populations are at their peak
• C. Pesticide is stored properly
• D. Pesticide breaks down instantly in sunlight

Answer: (A)

The key idea here is that getting the right amount of pesticide on the pest is essential for effective control. If the dosage is incorrect, there isn’t enough active ingredient to kill enough pests, so survivors continue feeding, reproduce, and the infestation remains. The label rate is set to deliver a lethal or suppressive dose while protecting the crop and environment, so following the prescribed dosage is the most reliable way to prevent failure. Proper storage preserves potency, so it helps prevent failure rather than cause it. Timing relative to pest life cycles and how quickly a product breaks down in sunlight can influence outcomes, but they don’t explain failure as consistently as applying the correct dosage.