Why is organic matter important for soil structure?

Organic matter plays a crucial role in enhancing soil structure and increasing nutrient capacity. It contributes to the formation of soil aggregates, which improves porosity and allows for better air and water movement through the soil. This aggregation creates a more stable structure that can withstand erosion and compaction. Furthermore, organic matter acts like a sponge, increasing the soil's ability to retain moisture and nutrients, providing a more favorable growing environment for plants.

In addition, organic matter is vital for the soil's cation exchange capacity, which is the ability of soil to hold onto essential nutrients like potassium, calcium, and magnesium. Higher nutrient retention means that plants can access these nutrients more effectively, promoting healthier growth.

While some choices may present attributes that are relevant to soil health, they do not accurately describe the overall benefits of organic matter in relation to soil structure and nutrient capacity.