Which factor can negatively impact nutrient availability in soil?

Soil compaction can significantly impair nutrient availability in the soil. When soil becomes compacted, the structure is altered, leading to reduced pore space. This reduction hinders the movement of air and water, and it can inhibit root growth, limiting the ability of plants to absorb nutrients. Additionally, compacted soil tends to have lower microbial activity, which is essential for the breakdown of organic matter and the release of nutrients into a form plants can utilize.

In contrast, high organic matter content generally improves nutrient availability by enhancing the soil's structure and promoting microbial activity. Proper moisture levels ensure that nutrients are dissolved and available for plant uptake, while crop rotation can help maintain a balanced nutrient profile and reduce nutrient depletion. Therefore, soil compaction stands out as a factor that negatively affects the overall nutrient accessibility for crops.