# Phosphorus: Rate guidelines, sources & best practices for Minnesota, Midwest farmers Page: https://stenobird.com/podcast/umn-extension-nutrient-management-podcast-4805870/phosphorus-rate-guidelines-sources-best-practices-for-minnesota-midwest-farmers Text version: https://stenobird.com/podcast/umn-extension-nutrient-management-podcast-4805870/phosphorus-rate-guidelines-sources-best-practices-for-minnesota-midwest-farmers.md Podcast: [UMN Extension Nutrient Management Podcast](https://stenobird.com/podcast/umn-extension-nutrient-management-podcast-4805870) Published: 2026-03-17T13:48:37+00:00 Episode link: https://share.transistor.fm/s/b25ca375 Audio file: https://media.transistor.fm/b25ca375/994cf5ad.mp3 Processing state: not_requested JSON: https://stenobird.com/v1/public/podcasts/umn-extension-nutrient-management-podcast-4805870/episodes/phosphorus-rate-guidelines-sources-best-practices-for-minnesota-midwest-farmers Duration seconds: 2376 ## Resource Today on the Nutrient Management Podcast we discuss phosphorus with experts from Minnesota and across the Midwest. Why are Midwest phosphorus guidelines different from state to state? Are Minnesota's current P guidelines satisfactory - or do states' P guidelines need revision? Would a P-rate calculator that incorporates economics be a useful tool, similar to nitrogen's MRTN calculator? What 'Phosphorus & the 4R's' tips and suggestions do our Minnesota, Ohio, Illinois and South Dakota panelists recommend for area farmers? Nitrates and water quality issues continue to be top-of-mind - would switching P sources be beneficial? What new and ongoing phosphorus-related research projects are panelists watching? All this and much more on today's show. Guests: Daniel Kaiser, Extension nutrient management specialist (St. Paul) John Jones, soil fertility, plant nutrition, and nutrient management research, University of Illinois Urbana-Champaign (Champaign, IL) Jason Clark, Extension soil fertility specialist, South Dakota State University (Brookings, SD) Manbir Rakkar, assistant professor, soil fertility and nutrient management, The Ohio State University (Brewster, OH) Additional resources: Understanding phosphorus in Minnesota soils Videos of the 2026 Nutrient Management and Nitrogen Conferences are now available Phosphorus fertilizer sources: What are the differences and which one should you use? Is 'fixed' P lost? 4 things to consider Minnesota Nutrient Reduction Strategy -- 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 twitte… ## Actions - request_transcript: `POST https://stenobird.com/v1/public/podcasts/umn-extension-nutrient-management-podcast-4805870/episodes/phosphorus-rate-guidelines-sources-best-practices-for-minnesota-midwest-farmers/transcription-requests` — Idempotently request low-priority transcript generation for this episode. - read_markdown: `GET https://stenobird.com/podcast/umn-extension-nutrient-management-podcast-4805870/phosphorus-rate-guidelines-sources-best-practices-for-minnesota-midwest-farmers.md` — Read the agent-friendly Markdown representation of this episode resource. A page view does not enqueue transcription. Agents should invoke `request_transcript` explicitly when they need this episode processed. ## Transcript Full transcripts are not published on public pages unless there is a clear rights basis.