Certified Crop Advisor Practice Exam

What are refuges used for in agriculture?

1. To enhance soil nutrients

2. To maintain natural enemies of insect pests

3. To improve crop yield

4. To test new pesticides

The correct answer is: To maintain natural enemies of insect pests

Refuges in agriculture are areas where pest populations can survive without exposure to pest control measures, such as insecticides or genetically modified crops designed to reduce their numbers. The primary purpose of these refuges is to support and maintain a population of natural enemies, such as predators and parasites, which can help to keep pest populations in check. By preserving these beneficial organisms, refuges contribute to sustainable pest management strategies, ultimately allowing for better control of insect pests in surrounding crop areas. In particular, refuges are crucial when dealing with pests that develop resistance to pest control tactics. By providing a habitat for natural enemies, the broader agricultural system can capitalize on biological control methods, reducing reliance on chemical treatments and promoting a healthier ecosystem. This practice not only aids in pest management but also helps support biodiversity and ecological balance in agricultural landscapes.