Certified Crop Advisor Practice Exam

What role do cover crops play in sustainable farming practices?

1. Increase weed populations

2. Improve soil health

3. Reduce crop diversity

4. Require additional pesticide use

The correct answer is: Improve soil health

Cover crops play a significant role in sustainable farming practices primarily by improving soil health. These crops, such as clover, rye, and legumes, are planted during off-seasons when main crops aren't growing. They contribute to soil health in various ways, including enhancing soil structure, increasing organic matter content, and promoting biodiversity within the soil ecosystem. The roots of cover crops can help prevent soil erosion by holding the soil in place, while their decaying biomass adds valuable nutrients back into the soil, which improves fertility. Furthermore, cover crops can enhance the soil's ability to retain moisture and promote beneficial microbial activity, which is essential for nutrient cycling. This improvement in soil health can lead to increased yields and resilience of the main crops grown during the seasons, making farming practices more sustainable over time. In essence, the use of cover crops is a crucial strategy for farmers who aim to maintain and enhance the productivity of their lands while also promoting environmental stewardship. Through their various benefits, cover crops serve as a key component of sustainable agricultural practices.