What is one negative consequence of improper soil tillage?

Improper soil tillage can lead to the destruction of soil structure, which is a significant concern for soil health and agricultural productivity. Soil structure refers to the arrangement of soil particles and the spaces between them, which affects water retention, drainage, and root penetration. When tillage is performed excessively or inappropriately, it can disrupt the natural aggregation of soil particles, leading to compaction or a breakdown of soil structure. This degradation can result in reduced aeration, impaired water infiltration, and a decline in the overall biological activity of the soil. Healthy soil structure is crucial for root development and nutrient availability, making the conservation of soil structure a primary focus in sustainable agricultural practices.

Other options highlight positive outcomes or benefits not associated with the negative consequences of improper tillage. For example, increased beneficial insect populations and control of annual weeds would typically represent favorable conditions resulting from wise agricultural or management practices, while the enhancement of soil aeration, if done correctly, is a positive aspect of appropriate tillage methods.