How can tillage influence soil structure?

Tillage can significantly influence soil structure in various ways, which is why the assertion that it can improve or degrade soil structure is accurate. Through the process of tillage, soil aggregates can be broken down, which may lead to a temporary improvement in soil aeration and water infiltration initially. However, excessive or improper tillage can disrupt the stability of soil aggregates, leading to compaction and erosion over time, ultimately degrading soil structure.

Improving soil structure can occur when tillage promotes a better arrangement of soil particles, increases the organic matter content through incorporation of crop residues, and helps in the development of beneficial microbial activity. Conversely, repeated tillage can lead to a loss of soil organic matter, which is crucial for maintaining the structure and health of the soil.

Thus, the dual nature of tillage—its ability to both enhance and detrimentally affect soil structure—illustrates the importance of management practices in achieving desired soil health outcomes.