Skip to main content

Nitrogen-fixing biological products: Four Midwest experts weigh in on industry claims, on-farm research tips, and more

In this episode of the Nutrient Management Podcast, we’re talking all about biologicals. What should companies consider as they test their biological products? Can growers reduce their nitrogen requirements due to biological use? Is there new research out there that tells us about biologicals’ effectiveness? What should growers watch out for when they consider companies’ claims about biological products?



  • Daniel Kaiser, UMN Extension nutrient management specialist
  • Carl Rosen, UMN Extension nutrient management specialist
  • Emerson Nafziger, Professor Emeritus, University of Illinois
  • Dave Franzen, Soil Science Specialist, North Dakota State University

Additional resources:


For the latest nutrient management information, subscribe to the Nutrient Management Podcast wherever you listen and never miss an episode! And don't forget to subscribe to the Minnesota Crop News daily or weekly email newsletter, subscribe to our YouTube channel, like UMN Extension Nutrient Management on Facebook, follow us on Twitter, and visit our website.

If you have questions or comments, please email us at

Support for the Nutrient Management Podcast is provided by Minnesota's fertilizer tonnage fee through the Agricultural Fertilizer Research & Education Council (AFREC). Learn more at

Print Friendly and PDF