Ornamental and Turf Pesticide Applicators Practice Exam

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Prepare for the Ornamental and Turf Pesticide Applicators Exam with flashcards and multiple-choice questions. Each question is designed with hints and detailed explanations to enhance your study sessions. Get ready to ace your exam!

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Resistance from pesticides is mainly caused by...

  1. Applying various pesticides

  2. Using the same pesticide repeatedly

  3. Mixing different pesticides together

  4. Using organic products exclusively

The correct answer is: Using the same pesticide repeatedly

Resistance from pesticides is primarily caused by the repeated use of the same pesticide over time. When a specific pesticide is applied consistently to control a pest, individual pests that are susceptible to that pesticide are eliminated, while those that have or develop resistance survive and reproduce. This results in a population of pests that is increasingly resistant to that pesticide, making it less effective for future applications. In contrast, applying various pesticides or mixing different pesticides could actually help to manage resistance by avoiding the overreliance on a single mode of action. Using organic products exclusively, while potentially beneficial in certain contexts, does not directly relate to the concept of pesticide resistance tied to synthetic chemical applications. Therefore, the primary driver of resistance is indeed the repeated and exclusive use of the same pesticide, necessitating a more integrated pest management approach that includes rotation and diversity in pesticide applications.

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