What is the benefit of using organic matter in soil management?

Using organic matter in soil management primarily enhances soil texture and increases nutrient availability, making it the most beneficial choice. When organic matter is incorporated into the soil, it improves soil structure by promoting better aggregation. This leads to enhanced aeration and drainage, which are essential for healthy root development. Additionally, organic matter acts as a reservoir for nutrients, allowing for better retention and gradual release of essential elements like nitrogen, phosphorus, and potassium. This nutrient availability supports plant growth and improves overall soil fertility.

The other options do not accurately reflect the comprehensive benefits of organic matter. For instance, while organic matter can contribute to moisture retention, it does not eliminate the need for irrigation entirely. It also does not solely serve as a pesticide; rather, it may help enhance the soil’s health, indirectly improving pest resistance. Lastly, organic matter does not decrease moisture content; instead, it can increase moisture retention in the soil, aiding in plant hydration during dry periods.