What is the primary benefit of increasing soil organic matter in agricultural soils?

Increasing soil organic matter is primarily beneficial for improving soil fertility. Organic matter enhances the soil's nutrient-holding capacity, which allows for better retention and availability of essential nutrients for crops. It helps create a more favorable environment for soil organisms, which contributes to nutrient cycling and soil health.

Additionally, organic matter improves soil structure, leading to better aeration and water infiltration, which are crucial for plant growth. Healthy soil with high organic matter content tends to have increased biological activity, fostering a robust ecosystem that supports crop development.

While it is true that increasing organic matter can indirectly influence various aspects of the soil environment, such as pest populations and soil pH, the most direct and significant impact is on soil fertility. Therefore, focusing on the enhancement of soil fertility is key to understanding the primary benefits of increasing soil organic matter in agricultural practices.