Which method can improve soil structure?

Cover cropping is an effective method for improving soil structure because it enhances various physical and biological properties of the soil. When cover crops are planted, their roots help to create channels in the soil, which can improve aeration and enhance water infiltration. This promotes a better soil structure by reducing compaction and allowing the soil to retain moisture more effectively.

Additionally, cover crops contribute organic matter to the soil when they decompose, which increases the soil's overall health and fertility. The organic matter helps to bind soil particles together, promoting the formation of aggregates that contribute to a well-structured soil environment. This improved structure can lead to better root growth and nutrient uptake by subsequent crops.

In contrast, excessive tilling can disrupt soil structure by breaking apart aggregates and reducing the organic matter content. Over-irrigation can lead to waterlogging and create anaerobic conditions, while soil compaction compresses the soil particles, making it more difficult for air and water to move through the soil profile. Thus, cover cropping stands out as a beneficial practice for enhancing soil structure.