Certified Crop Advisor Practice Exam

One of the following is not a benefit of using crop rotation. Which is it?

1. Improved soil structure

2. Increased pest pressure

3. Diversified cash flow

4. Nutrient cycling

The correct answer is: Increased pest pressure

In the context of crop rotation, increased pest pressure stands out as a non-benefit because one of the primary purposes of rotating crops is to break the life cycles of pests and diseases that thrive on specific plants. By alternating the types of crops grown in a particular field, farmers can reduce the population of pests that are species-specific to certain crops, ultimately leading to lower pest pressure and a healthier crop system. In contrast, the other benefits associated with crop rotation include improved soil structure, diversified cash flow, and nutrient cycling. Improved soil structure can result from varied root systems from different crops, which enhances soil aggregation and aeration. Diversified cash flow stems from growing a variety of crops, which can help stabilize a farmer’s income by hedging against market fluctuations and crop failures. Nutrient cycling occurs as different crops utilize and return various nutrients to the soil, improving its fertility and sustainability. Therefore, the correct answer accurately identifies a factor that contradicts the overall benefits of crop rotation.