What is one method recommended for reducing phosphorus extraction from soils?

Implementing no-till farming practices is a recommended method for reducing phosphorus extraction from soils. No-till farming involves minimizing soil disturbance, which helps maintain soil structure and health. This practice reduces erosion, maintains organic matter, and enhances soil moisture retention, all of which contribute to a decrease in phosphorus runoff and leaching.

By leaving soil undisturbed, no-till methods can also promote the development of a stable microbial ecosystem, which can further help in nutrient cycling and retention. This approach not only protects phosphorus already present in the soil but also mitigates the potential for excess phosphorus to leave the fields and contribute to water quality issues.

On the other hand, using more phosphorus fertilizers increases the risk of excess phosphorus being available in the soil, while applying nutrients more frequently may not address the fundamental issues of soil erosion and leaching. Increasing irrigation can also lead to more phosphorus moving off-site in runoff. Therefore, no-till practices stand out as an effective sustainable solution for reducing phosphorus extraction from soils.