What is the primary benefit of adding organic matter to soil?

The primary benefit of adding organic matter to soil is its ability to improve water retention. Organic matter, such as decomposed plant and animal materials, has a high capacity for holding water due to its sponge-like structure. This allows soil to retain moisture more effectively, which is crucial for plant growth, especially in regions with variable rainfall. Enhanced water retention helps to ensure a more stable moisture supply for crops, reducing the need for frequent irrigation and minimizing stress during dry periods.

While organic matter does have other benefits, such as enhancing soil structure, increasing nutrient availability, and providing a buffering effect on pH, its remarkable capacity for water retention is what makes it particularly valuable. Soils enriched with organic matter can also facilitate better drainage and aeration, further promoting healthy plant development. Ultimately, improved water retention is central to the overall health and fertility of the soil.