Soil Health and 4R Practices Reduce Nitrogen Losses

By Scout Nelson

University of Minnesota Extension is highlighting the connection between soil health and nitrogen management in the latest episode of the Advancing Nitrogen Smart podcast. The discussion explores how soil health principles and the 4Rs of nutrient stewardship can work together to reduce nitrogen losses to water while improving agricultural sustainability.

The podcast examines how practices such as minimizing soil disturbance, maintaining year-round ground cover and encouraging biological activity can help reduce runoff and nitrate leaching. These strategies support healthier soils and improve the ability of farming systems to retain nutrients, reducing the risk of nitrogen entering lakes, rivers and groundwater.

Experts also discuss the role of nitrogen cycling in agricultural soils. Factors such as soil moisture, temperature and microbial activity influence whether nitrogen is released from organic materials through mineralization or temporarily tied up in crop residue through immobilization. Understanding these processes can help farmers make more informed nutrient management decisions throughout the growing season.

Another topic covered in the episode is the use of biological soil health tests, including the Haney Test and Solvita CO₂ Burst Test. While these tools can provide valuable insights into soil biological activity and nutrient dynamics, specialists note that they are better used as indicators of soil health potential and risk rather than precise guides for fertilizer application rates.

The discussion also highlights the importance of strong soil structure and extensive root systems. Healthy soils improve water infiltration, enhance nutrient uptake and help crops use available nitrogen more efficiently, reducing nutrient losses and supporting productivity.

Supported by Minnesota corn growers through the Minnesota Corn check-off program, the Advancing Nitrogen Smart podcast continues to deliver research-based information that helps producers improve nitrogen efficiency, protect water quality and strengthen sustainable farming practices.

Photo Credit: gettyimages-sasiistock