Podcast Extra: Adjusting Nitrogen Management with John Kempf and MSHC
Regenerative Agriculture Podcast
AEA Marketing
4.7 • 546 Ratings
🗓️ 2 April 2026
⏱️ 61 minutes
🔗️ Recording | iTunes | RSS
🧾️ Download transcript
Summary
In this webinar for the Minnesota Soil Health Coalition, John Kempf discusses a paradigm shift in nitrogen management . John outlines how moving away from high-electrolyte "chemistry" fertilizers toward biological nutrition can build crop resilience and significantly reduce input costs . By understanding how different forms of nitrogen, such as ammonium and urea versus nitrate, impact plant physiology and water requirements, growers can navigate a transition to a system where soil biology provides the majority of the crop's nutritional needs .
In this webinar, John discusses:Â
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High-yielding crops historically receive about 80% of their nitrogen as ammonium and 20% as nitrate .
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Plants and soil biology interact with specific nitrogen forms like amino acids rather than generic N .
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Nitrate requires three molecules of water for conversion, increasing a plant's total water requirement .
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Foliar urea can be four to seven times more efficient than soil-applied nitrogen
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Replacing the first 25 pounds of nitrogen with 25 pounds of sulfur can deliver an equivalent yield responses
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Managing nitrogen with carbon and molybdenum reduces leaching and supports biological fixation
Additional Resources
To learn more about the Minnesota Soil Health Coalition, please visit: https://www.mnsoilhealth.org/
To learn more about AEA's approach to Nitrogen Management, please visit: https://advancingecoag.com/article/regenerative-nitrogen/
About John KempfÂ
John Kempf is the founder of Advancing Eco Agriculture (AEA). A top expert in biological and regenerative farming, John founded AEA in 2006 to help fellow farmers by providing the education, tools, and strategies that will have a global effect on the food supply and those who grow it.Â
Through intense study and the knowledge gleaned from many industry leaders, John is building a comprehensive systems-based approach to plant nutrition – a system solidly based on the sciences of plant physiology, mineral nutrition, and soil microbiology.Â
Support For This Show & Helping You Grow
Since 2006, AEA has been on a mission to help growers become more resilient, efficient, and profitable with regenerative agriculture.Â
AEA works directly with growers to apply its unique line of liquid mineral crop nutrition products and biological inoculants. Informed by cutting-edge plant and soil data-gathering techniques, AEA's science-based programs empower farm operations to meet the crop quality markers that matter the most.Â
AEA has created real and lasting change on millions of acres with its products and data-driven services by working hand-in-hand with growers to produce healthier soil, stronger crops, and higher profits.Â
Beyond working on the ground with growers, AEA leads in regenerative agriculture media and education, producing and distributing the popular and highly-regarded Regenerative Agriculture Podcast, inspiring webinars, and other educational content that serve as go-to resources for growers worldwide.Â
Learn more about AEA's regenerative programs and products:Â https://www.advancingecoag.com Â
Transcript
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| 0:00.0 | I was asked to speak about nitrogen management in particular, and perhaps touch on phosphorus management as well, |
| 0:07.4 | and how we can think differently about managing nitrogen from a plant health perspective and from a soil biology perspective. |
| 0:18.1 | And particularly, when we look at the macroeconomic conditions of what's happening |
| 0:23.9 | and what's going on in the world, you know, many years ago on the podcast, I was having a |
| 0:29.3 | conversation with Gary Zimmer and I asked Gary the question, if you could wave a magic wand |
| 0:35.9 | and change one thing, |
| 0:38.3 | and with the goal and the objectives of accelerating the adoption of a different form of agriculture, |
| 0:45.0 | but at that point in time, Gary was referring to as a biological agriculture, |
| 0:50.5 | if you could wave a magic wand and change one thing, what would it be? |
| 0:59.0 | And Gary's answer to that question was, I would make nitrogen really expensive. And what he intended by that, what he meant by that, is that what he had discovered in 30-some years of what he called biological farming is that you can grow your own nitrogen. |
| 1:14.6 | And he wasn't even talking about cover crops. Cover crops were part of it, but he was speaking more about the soil biology and the discovery and the realization that soil health and the ability to fix and sequester nitrogen and supply nitrogen to a crop |
| 1:30.3 | is closely connected to each other. |
| 1:33.3 | And if you wanted to incentivize the adoption of soil health in a significant way at a large scale, |
| 1:40.3 | one easy pathway to do that would be to make it cheaper to grow your own nitrogen than to buy it. |
| 1:46.0 | And since he made that comment, it's now, I don't know, at least six or seven years ago, probably longer, |
| 1:55.0 | we've learned a lot more about nitrogen, the impact that it has, and the way that it changes plant |
| 2:03.5 | physiology, and the way that it changes soil microbiology. So for the discussion today, I'm going |
| 2:11.2 | to provide a quick overview of some of the ways that we think differently about nitrogen today |
| 2:16.2 | than we did 10 years ago. |
| 2:18.3 | And how we manage it differently, I want to just dive right straight into the practicalities of it, |
| 2:25.3 | because obviously spring is here, planting season is upon us, and what can we do differently this season that can have a very significant impact? |
| 2:33.3 | So there's many starting points in this conversation, but one of the things that I want to put out there for us to think about is I think it would be wise for us to, it would be helpful for us if we stopped having a conversation about nitrogen. |
... |
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