Which aspect of soil is improved by crop rotation?

Crop rotation enhances nutrient content in the soil through a variety of mechanisms. Different crops have varying nutrient requirements and abilities to contribute nutrients back to the soil. For instance, legumes can fix atmospheric nitrogen, increasing the nitrogen levels in the soil, which benefits subsequent crops that may need more nitrogen. This practice helps to maintain a balance in soil nutrients, preventing depletion that can occur when the same crop is grown repeatedly. As a result, crop rotation promotes a more diverse and robust nutrient profile, ultimately leading to improved soil fertility and productivity.

While soil acidity, soil structure, and organic matter are important factors influenced by agricultural practices, they do not directly reflect the primary benefit derived from the practice of crop rotation in the same way that nutrient content does.