In this episode of the Advancing Nitrogen Smart series, we discuss probably the most important topic for many farmers - rate. What makes both over-application and under-application of nitrogen counter-productive in terms of yield? How does a Maximum Return To Nitrogen (MRTN) rate approach differ from a yield-based approach? What are long-term environmental consequences of over-application, and how does this relate to a farmer's operation? What are some ways to address in-field variability when determining rate?  Guests: Brad Carlson, Extension educator (Mankato)Daniel Kaiser, Extension nutrient management specialist (St. Paul)Additional resources: Maximum Return To Nitrogen (MRTN) rate calculator Are you overspending on fertilizer?Best practices for nitrogen managementNitrogen Smart (online course)--- For the latest nutrient management information, subscribe to the Nutrient Management Podcast. 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 X (formerly twitter), and visit our website. If you have questions or comments, please email us at [email protected]. Advancing Nitrogen Smart is proud to be supported by the farm families of Minnesota and their corn check-off investment through Minnesota Corn.