What is one benefit of organic matter in soil?

Organic matter plays a crucial role in maintaining and improving soil health. One significant benefit of organic matter in soil is that it enhances soil structure and nutrient availability.

When organic matter decomposes, it forms stable compounds known as humus, which improve the aggregation of soil particles. This aggregation results in better soil structure, allowing for increased aeration, improved drainage, and enhanced root penetration. Additionally, organic matter serves as a reservoir for essential nutrients, as it can bind with nutrients and release them gradually to plants. This improves the nutrient retention capacity of the soil, making it more fertile and productive for crops.

In contrast, moisture retention is positively affected by organic matter, as it helps retain water in the soil rather than reducing it. The introduction of pests is generally associated with certain practices rather than being a direct benefit of organic matter, and weakening soil structure contradicts the role of organic matter, as it is well established to improve rather than diminish soil structure.