# An introduction to MRTN: Efficiencies & economics in mind

Page: https://stenobird.com/podcast/umn-extension-nutrient-management-podcast-4805870/an-introduction-to-mrtn-efficiencies-economics-in-mind
Text version: https://stenobird.com/podcast/umn-extension-nutrient-management-podcast-4805870/an-introduction-to-mrtn-efficiencies-economics-in-mind.md
Podcast: [UMN Extension Nutrient Management Podcast](https://stenobird.com/podcast/umn-extension-nutrient-management-podcast-4805870)
Published: 2025-10-14T17:26:07+00:00
Episode link: https://share.transistor.fm/s/ef5c49b1
Audio file: https://media.transistor.fm/ef5c49b1/c672485c.mp3
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JSON: https://stenobird.com/v1/public/podcasts/umn-extension-nutrient-management-podcast-4805870/episodes/an-introduction-to-mrtn-efficiencies-economics-in-mind
Duration seconds: 1710

## Resource

Brad Carlson and Daniel Kaiser discuss the maximum return to nitrogen method (MRTN) for determining an optimal N rate on today's episode of Advancing Nitrogen Smart Podcast. What is the MRTN and why was it created? What are differences between an N investment model versus a maximum yield model? What should farmers keep in mind while using the MRTN? Where can Minnesota farmers, producers and ag professionals find the MRTN? All this and more on today's show. Guests: Brad Carlson, Extension educator (Mankato) Dan Kaiser, Extension nutrient management specialist (St. Paul) Additional resources: www.cornnratecalc.org (N rate calculator) Are you overspending on fertilizer? Nutrient Management Updated corn nitrogen rates: What are we currently seeing for N fertilizer requirements in Minnesota? 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 nutmgmt@umn.edu. Advancing Nitrogen Smart is proud to be supported by the farm families of Minnesota and their corn check-off investment through Minnesota Corn.

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## Transcript

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