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Regenerative Agriculture Podcast

Podcast Extra: Coffee with John Kempf - Acres Eco-Ag Conference 2025

Regenerative Agriculture Podcast

AEA Marketing

Science, Natural Sciences, Earth Sciences

4.7 • 548 Ratings

🗓️ 31 December 2025

⏱️ 61 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

In this Podcast Extra episode, join John at Acres Eco Ag 2025, where he hosted a "Coffee with John Kempf" session, answering questions from the audience. In this episode, a wide range of topics are discussed, including:

  • The use of foliar-applied low-biuret urea to significantly reduce a crop's total nitrogen requirement .

  • The potential for amino acid forms of nitrogen to replace large amounts of conventional mineral nitrogen .

  • Why plants fail to absorb or metabolize calcium efficiently when soil boron levels are low .

  • Recommendations for conducting sap analysis every 7 to 10 days to identify nutrient needs .

  • Optimal spray timing and the "point of deliquescence" to keep droplets liquid on leaves longer .

  • The necessity of using clean water free of carbonates, such as rainwater or reverse osmosis water, for effective foliar sprays .

  • AEA's new product, Pinion, which stimulates the leaf microbiome and activates plant immune pathways .

  • Strategies for decompacting soil by building organic matter and mycorrhizal fungi rather than just chemical balancing .

Additional Resources
To learn more about Acres U.S.A., please visit: https://www.acresusa.com/

To laern more about Pinion, please visit: https://advancingecoag.com/product/pinion/

About John Kempf
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.

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.

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. 

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.

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.

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.

Learn more about AEA's regenerative programs and products: https://www.advancingecoag.com

 

Transcript

Click on a timestamp to play from that location

0:00.0

So the question was, what are my thoughts on foliar applied urea, melted urea, as a replacement

0:06.8

for soil applied nitrogen?

0:09.1

I love it.

0:10.4

I wish farmers would do a lot more of it because their total nitrogen requirement to grow

0:14.1

a crop would go down substantially.

0:15.7

It has beneficial impacts on soil biology, and you get very strong yield responses from it.

0:20.3

So there's lots of information about melting urea online, how to do it.

0:26.6

I'm not going to go into detail on that, but one thing I'll point out that isn't common

0:30.6

knowledge, and that is you specifically want a form of urea that is referred to as low biurea, which

0:38.4

means low biorette.

0:41.2

And so if a grower asks me to make nitrogen recommendations on a corn crop and I know nothing, I have no context. I don't know what the

0:56.4

history is. I don't know what the soil's ability is to deliver nitrogen. My preferred approach

1:01.5

is to apply 40 pounds of nitrogen and 20 pounds of sulfur,

1:13.6

preferably in the form of ammonium thiosulfate

1:16.6

at or before planting,

1:18.6

and wait to apply any additional nitrogen

1:23.6

until the need is revealed by sap analysis

1:26.6

and then either put on foliar applications of urea

1:29.1

or if that is not an option to put on side-dress nitrogen applications.

1:34.8

So that initial push, the reality is a lot of the older corn genetics had the ability

1:42.7

to start strong without that initial nitrogen push, but a lot

1:47.0

of modern genetics don't. They're very dependent on that nitrogen application right at the beginning.

...

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