Abianne Falla used to see the native holly shrub as a pesky invasive on her family's Texas land, until the 2011 drought highlighted its resilience: it was the sole green survivor. Yaupon (Ilex vomitoria) is North America's only caffeinated plant, though its roots as a ceremonial brew in Gulf Coast indigenous societies have been suppressed by colonial forces and lost to commercialization. As a member of the Chickasaw Nation, Abianne became interested in yaupon and crafted a variety of flavor profiles in her home roasting experiments, which she grew into her company, CatSpring Yaupon. 

Abianne harnesses yaupon for regeneration, harvesting on 500 acres while restoring degraded grasslands, boosting biodiversity by 70% and soil carbon by 7%, and fostering balanced ecosystems through grazing. Abianne's organic, wild-harvested model turns a 20-million-acre nuisance into sustainable income and regenerative opportunities.

In this episode, John and Abianne discuss:

• Yaupon's drought resilience and its takeover of Texas savannas.

• Its balanced caffeine mix for crash-free, joyful energy, plus anti-inflammatory benefits.

• Reviving indigenous traditions with cultural care in branding.

• Turning "weeds" like yaupon or kudzu into crops via history, AI, and observation.

• Building a new category from markets to multi-channel sales.

• The market potential for local, climate-resilient caffeine amid global shifts.

Additional Resources
To learn more about Cat Spring Yaupon, please visit: https://catspringtea.com/

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

 

Morgan Twain-Peterson founded Bedrock Wine Company in 2007, growing from humble beginnings in a small outbuilding into a respected winery. Jake Neustadt joined Morgan in 2015, bringing his expertise in transitioning old vineyards to regenerative practices. Together they are focused on enhancing soil health, producing uniquely Californian wines, and preserving California's historic vineyards, some of which date to the 19th Century.

Morgan and Jake's work at Bedrock Wine Company shows how regenerative agriculture can restore degraded vineyard soils, significantly increasing soil organic matter and water retention and improving climate resilience. Their practices—including no-till, cover crops, and holistic grazing—not only improve vine health and wine quality but also set a model for sustainable viticulture, addressing the wine industry's need for differentiation amid declining consumption.

In this episode, John, Morgan, and Jake discuss:

• Preserving historic vineyards with diverse varieties unique to California

• Transitioning from conventional tillage to no-till organic systems for soil health

• Using foliar applications to enhance vine resilience in dry-farmed vineyards

• Integrating holistic grazing with sheep to improve soil biology

• Planting mixed-variety vineyards to increase resilience and wine complexity

• Leveraging genetic diversity for heat tolerance

Additional Resources
To learn more about Bedrock Wine company, please visit: https://bedrockwineco.com/

To listen to the Bedrock Wine Conversations Podcast, please visit: https://open.spotify.com/show/6jAHhAOI9Xy8uKDJmyl5Xx

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

 

Anthony Myint is the founder of Zero Foodprint, a nonprofit focused on transforming agriculture through innovative economic models. A former chef and restaurateur, Myint transitioned from the restaurant industry to champion regenerative agriculture and address the climate impact of food systems. His organization helps farmers transition to regenerative practices by funding farm projects that enhance soil health, conserve water, and sequester carbon. Zero Foodprint is funded by businesses that contribute small percentages of their revenue, often through opt-out fees.

Zero Foodprint's approach decouples food consumption from land management, enabling systemic change without relying solely on consumer behavior. Myint's work emphasizes collective action—drawing parallels with renewable energy funding models—and collaborates with businesses, farmers, and governments to scale regenerative practices. Zero Foodprint now deployed over $8 million total to over 600 farm projects (including government funds, often in concert with funds from businesses).

In this episode, John and Anthony discuss:

• The restaurant industry's potential to fund regenerative agriculture

• Decoupling food consumption from land management for direct impact

• Small opt-out fees funding farm projects with minimal consumer cost

• Limited impact of consumer-driven demand on systemic change

• Policy and public-private partnerships to scale regenerative practices

• Engaging farmers and businesses to adopt and promote the model

Additional Resources
To learn more about Anthony and Zero Foodprint, please visit: https://www.zerofoodprint.org/

To learn more about Zero Foodprint's plan on Collective Regeneration, please read this paper.

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

 

Austin Unruh founded Trees for Graziers to help farmers establish trees in pastures on a large scale. Austin has worked on over 400 acres for 25 different working farms. Getting trees planted at a large scale and an affordable price led to lots of experimentation to ensure protection and integration into pasture that was minimally intrusive.

It's his goal to make silvopasture as easy and cost-effective as possible for farmers. Trees for Graziers offers everything from planning, planting, and aftercare to growing silvo-specific nursery stock. 

In this episode, Austin and John discuss:

• The importance of integrating trees into pasture

• How to protect young trees from rodent damage

• The many benefits that trees provide

• Tree species that have the greatest opportunities in silvopasture

• How to best match tree characteristics to farm goals

Additional Resources
To learn more about Austin Unruh and Trees for Graziers, please visit:
https://treesforgraziers.com/

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/

~ 

VIDEO: To learn more from John Kempf about regenerative agriculture, watch this conversation between John and three AEA grower partners about how regenerative agriculture is changing lives and conventional farming: https://youtu.be/n9U6GwbYPDk

 

Paul Greive founded Pasturebird after searching for high-quality pasture-raised chicken to feed his family. Unable to find this chicken in stores, Paul and his family took matters into their own hands, setting out to produce nutrient-dense pasture-raised chicken. In the spring of 2012, Paul's brother ordered 50 chicks, marking the inception of their business.

Pasturebird is now the largest pasture poultry producer in the world, with a mission to make nutrient-dense chicken more affordable and accessible to all. Pasturebird is revolutionizing the chicken industry by integrating solar-powered, self-driving chicken coops. This innovation provides their birds access to the outdoors, fresh grass, insects, and sunlight and contributes to soil regeneration for future generations.

In an unconventional move, the company partnered with "Big Ag" giant Perdue. This strategic partnership granted Pasturebird access to hatcheries, feed mills, and slaughterhouses, sparing them from the significant debt they would have otherwise incurred to build these resources.

In this episode, Paul and John discuss:

• Improving the way "Big Ag" operates

• Scaling up operations to reduce costs

• Focusing on one thing and outsourcing the rest

• Pasturebird's collaboration with Perdue 

• The innovation behind self-driving chicken houses

• The importance of effective marketing and messaging

• Incentivizing regenerative ag through fractional land ownership

Additional Resources
To learn more about Pasturebird and to place an order, please visit: https://www.pasturebird.com/

Connect with Paul on LinkedIn: https://www.linkedin.com/in/paulgreive/

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/

~ 

VIDEO: To learn more from John Kempf about regenerative agriculture, watch this conversation between John and three AEA grower partners about how regenerative agriculture is changing lives and conventional farming: https://youtu.be/n9U6GwbYPDk

 

Austin Allred is a dairyman located in the Columbia basin of Washington State and operates Royal Family Farms. His parents started farming 50 years ago, and now Austin, as well as his brothers, own their own operations. Together, their four farms have grown over 1 million tons of potatoes, boxes of apples, boxes of cherries, bushels of corn, and bales of hay, beans, peas, asparagus, and more. Austin's dairy produces 1 million gallons of milk per month.

Fifteen years ago, the family began their regenerative journey when they decided to become more self-sufficient and reduce their dependency on synthetic fertilizers. Their different farming operations work together to create a self-sustaining loop, a key to their innovation and success. 

Today, Austin Allred is a strong proponent of regenerative agriculture and loves finding innovative ways to work together with his family to further the success and overall health of their soil, crops, and cattle.

In this episode, Austin and John discuss:

• Reducing the need for fertilizers by bringing in cattle to his operation

• Using byproducts from neighboring farms for nutrient balance feed

• Increasing nitrogen independency

• Liquid manure management and composting systems

• Reducing water consumption by recycling it on the farm

• Utilizing marketing to showcase the story of products

• Developing other income streams on the farm

• The importance of collaboration between growers 

Additional Resources
To learn more about Royal Dairy, please visit: https://www.royaldairy.com/on-the-farm or watch their documentary: https://www.youtube.com/watch?v=KfSzdzgDXjE

Friend Earthworm by George Oliver: https://www.amazon.com/gp/product/0980297613/ref=x_gr_bb_amazon?ie=UTF8&tag=x_gr_bb_amazon-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=0980297613&SubscriptionId=1MGPYB6YW3HWK55XCGG2

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/

~ 

VIDEO: To learn more from John Kempf about regenerative agriculture, watch this conversation between John and three AEA grower partners about how regenerative agriculture is changing lives and conventional farming: https://youtu.be/n9U6GwbYPDk

 

In this special episode, hosted by Tim Hammerich and the Future of Agriculture Podcast, Tim and John Kempf will challenge several commonly held assumptions about the future of agriculture. Take regenerative agriculture, which is often defined by the ability to improve soil health and sequester carbon. But John Kempf says these are outcomes, even by-products, not the complete definition of regenerative.

In this episode, Tim and John discuss:

• What it means to be regenerative

• AEA observations from working with over 10,000 growers and 4 million acres

• AEA's Wefunder campaign

• How to look at agriculture problems and solutions through a regenerative lens

Future of Agriculture explores the people, companies, and ideas shaping the agriculture industry's future. Every week, Tim Hammerich talks to the farmers, founders, innovators, and investors to share stories of agtech, sustainability, resiliency, and the future of food. Future of Agriculture believes innovation is an important part of the future of agriculture, and real change comes from collaboration between scientists, entrepreneurs, and farmers. Lead with optimism, but also bring data.

Additional Resources:
To listen to more episodes of Future of Agriculture, please visit: https://www.futureofagriculture.com/

To learn more about AEA's Wefunder campaign, please visit: https://wefunder.com/advancingecoag

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/

~ 

VIDEO: To learn more from John Kempf about regenerative agriculture, watch this conversation between John and three AEA grower partners about how regenerative agriculture is changing lives and conventional farming: https://youtu.be/n9U6GwbYPDk

 

Kelton Coleman has been farming since 2011 in the panhandle of Texas. He farms with his dad, grandfather, and father-in-law. He started with conventional agriculture in 2011 but shifted to organic peanuts and wheat in 2013, followed by organic cotton in 2016. 

His initial journey into organic farming was based solely on economics, rather than soil or plant health. That has since changed, and now Kelton is deeply vested in his crops' health. He first got connected to AEA through the Regenerative Agriculture Podcast and then through personal connections in his community. He now uses several programs and products from AEA, and he is seeing many successes on his farm, such as reduced nitrogen usage, 20% more yield on his cotton (including a large increase in 6-lock cotton bolls), and better protection from root rot in his peanut crop.

In this episode, Kelton and John discuss:

• Memorable failures that led Kelton to where he is today

• The unintended consequences of inputs on microbial organisms, insects, and plants

• How he implemented regenerative practices on his farm

• Working with AEA and their products

• Improvements he is seeing in peanuts and cotton

• Improving drought and heat resilience

• Crop-wide nitrogen reduction

• Improving no-till organic systems

Additional Resources
To learn more about developments of no-till organic systems, listen to this podcast episode featuring Helen Atthowe: https://regenerativeagriculturepodcast.com/episodes/episode-87-helen-atthowe/

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/

~ 

VIDEO: To learn more from John Kempf about regenerative agriculture, watch this conversation between John and three AEA grower partners about how regenerative agriculture is changing lives and conventional farming: https://youtu.be/n9U6GwbYPDk

 

Koen van Seijen has interviewed over 250 investors, investment fund managers, opinion leaders, farmers, and scientists to find out how money can best be used to regenerate soil, people, local communities, and ecosystems. He is currently a member engagement manager of Toniic, the global community of dynamic and active impact investors. Previously Koen supported Aqua-Spark, an impact investing fund focused on sustainable aquaculture companies.

In this conversation, John and Koen discuss:

• Current investment activity in agriculture

• The role of capital in regenerative adoption

• Regenerative practices and topics attractive to investors

• Regenerating the water cycle at a local ecosystem level

• The benefits of nutrient absorption through foliage

• The need for education in the finance world

• Areas of opportunities for growers today

• Increasing consumer interest through nutrient density

To learn more about Koen and the "Investing in Regenerative Agriculture and Food" podcast, please visit: https://investinginregenerativeagriculture.com/

Additional Resources

• "Back from the Brink: How Australia's Landscape Can Be Saved" by Peter Andrews
• "The Hidden Life of Trees" by Peter Wohlleben 
• "The Weather Makers: How Man Is Changing the Climate and What It Means for Life on Earth" by Tim Flannery
• Walter Jehne YouTube Playlist 

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/

~ 

VIDEO: To learn more from John Kempf about regenerative agriculture, watch this conversation between John and three AEA grower partners about how regenerative agriculture is changing lives and conventional farming: https://youtu.be/n9U6GwbYPDk

 

Dr. Stephan van Vliet performs clinical and translational studies to evaluate the effects of whole food ingestion and physical activity interventions on body composition, physical function, inflammation, insulin action, and intracellular signaling pathways that regulate muscle mass with advancing age. His work has been published in the American Journal of Clinical Nutrition, the Journal of Nutrition, and the Journal of Physiology.

Dr. van Vliet earned his Ph.D. in Kinesiology and Community Health as an ESPEN Fellow from the University of Illinois at Urbana-Champaign. He received post-doctoral training at the Center for Human Nutrition at Washington University in St. Louis School of Medicine. Dr. van Vliet also holds a Masters in Nutrition Science.

As a member of the Duke Molecular Physiology Institute within the Duke University School of Medicine, his work focuses on the effects of primary (protein, carbohydrates, fats, vitamins) and secondary compounds (phytochemicals, polyphenols, antioxidants) and the molecular mechanisms by which they impact human metabolism. His work often involves physical activity interventions and utilizes an integrative approach to improve human health.

In this conversation, John and Stephan discuss:

• Nutrient differences in grass-fed beef

• Other studies focused on beef, bison, and milk

• Implications of plant secondary metabolites being consumed

• Variations in phytonutrient density 

• Soil health and ergothioneine levels

• How different plant species provide different compounds to livestock

• Organic production and nutrient density

Additional Resources
Follow Stephan on Twitter: @vanvlietphd
For more webinars featuring Dr. van Vliet, please search "Dr. Stephan Van Vliet" on YouTube
Stephan's Google Scholar Profile: https://scholar.google.com/citations?user=L5KcySQAAAAJ&hl=en
To learn more, please visit his website: https://stephanvanvliet.com/

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/

~ 

VIDEO: To learn more from John Kempf about regenerative agriculture, watch this conversation between John and three AEA grower partners about how regenerative agriculture is changing lives and conventional farming: https://youtu.be/n9U6GwbYPDk

Anthony Corsaro is an entrepreneur, investor, and regenerative agriculture evangelist whose mission is to help heal our people and planet through ventures that inspire the production and consumption of healthy, nutrient-dense foods. Anthony's family has been deeply involved in the food system for almost 100 years since his orphaned grandfather started selling produce in the early 1930s. That business grew into one of the country's leading regional fresh produce distributors and today serves 2,500+ retail customers in 20 states.

Anthony is the Founder and Managing Director at Outlaw Ventures: a family office backing the rebels, radicals, and revolutionaries building the better food system of tomorrow. Outlaw Ventures is raising a venture capital fund to invest in early-stage regenerative consumer brands. Anthony is also the Creator and Co-Host of The ReGen Brands Podcast: a podcast about the consumer brands supporting regenerative agriculture and how they're changing the world. He is also the Founder of Regeneration Nation: a clothing company and community hub for the heroes and advocates of regenerative agriculture.

In this conversation, John and Anthony discuss:

• Regenerative vs. extractive relationships in supply chains

• Building regenerative infrastructure to create better routes to market

• Increasing market accessibility for growers

• Nutritional integrity and its impact on buyers

• "Upstream Disease" - examining the whole supply chain

• Opportunities and limiting factors for growers

• The importance of networking to expand market access

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/

~ 

VIDEO: To learn more from John Kempf about regenerative agriculture, watch this conversation between John and three AEA grower partners about how regenerative agriculture is changing lives and conventional farming: https://youtu.be/n9U6GwbYPDk

 

Jimmy Emmons is a third-generation farmer from Oklahoma. He and his wife Ginger have been farming and ranching together since 1980. They have a 2000-acre farm with a diverse rotation of crops that include: wheat, soybeans, sesame, sunflowers, irrigated dairy alfalfa, canola, grain sorghum, and several cover crops for seed.

Jimmy has been monitoring soil health with soil testing since 2011 and is a proponent of using multi-species cover crops to enhance soil health. He is currently involved in a multi-year water holding capacity study examining the water use of cover crops. Jimmy also incorporates other regenerative practices, such as companion crops, to attract beneficial insects and decrease the need for additional synthetic nutrients.

In this conversation, John and Jimmy discuss:

• The benefits of cover crops for water retention in the soil profile

• Drought resilience of crops and plants grown in diverse environments

• Companion crop mixes and their benefits

• The importance of talking to your legislatures about regenerative farming

• The negative effects on quality markers from grower practices and input decisions 

• Using nutrient-dense food as medicine

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.

~ 

VIDEO: To learn more from John Kempf about regenerative agriculture, watch this conversation between John and three AEA grower partners about how regenerative agriculture is changing lives and conventional farming: https://youtu.be/n9U6GwbYPDk

Dr. Mary Lucero has over 30 years of experience in scientific research and education in agriculture. Her research examines the microbial relationships between plants and soil health and proves that the regenerative approach offers a way forward for growers and consumers. As Co-founder and Systems Biologist at End-O-Fite Enterprises, she works with growers and biostimulant producers to optimize regenerative techniques to restore microbial ecosystems. 

Mary and her husband, David, run Jal Farms, a family-owned fruit and beef operation in Eastern New Mexico. Her farm focuses on regenerative practices to restore soil health and growing nutrient-dense foods and even has an on-farm lab for her research.

In this conversation, John and Mary discuss:

• The importance of creating an environment for native biology to thrive

• How fungi are great shapeshifters 

• The Mycosome Hypothesis developed by Peter Atsatt

• The importance and complexity of endophytes

• Horizontal organism transfer

• Indigenous concepts and principles    

• Mary's experience with farm ownership 

To connect with Mary and her work and to learn more about her online classes, please visit: https://endofite.com/ 

To learn more about the Mycosome Hypothesis developed by Peter Atsat, please visit: https://pubmed.ncbi.nlm.nih.gov/12730709/.

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.

To get started, contact AEA here: https://www.advancingecoag.com/contact

~ 

VIDEO: To learn more from John Kempf about regenerative agriculture, watch this conversation between John and three AEA grower partners about how regenerative agriculture is changing lives and conventional farming: https://youtu.be/n9U6GwbYPDk

 

Troy Swift started farming at age 42, and has achieved incredible results using regenerative practices in his Texas pecan grove: increasing yields in certain varieties by up to 6X, while cutting nitrogen inputs by 97%, reducing insecticides, and eliminating herbicides. 

Troy is a first-generation farmer from Central Texas who transitioned to pecan farming after a career in the composite jet engine industry. With a data-driven mindset from his manufacturing background, he now manages 126 acres of hybrid and native pecans along the San Marcos River and serves as president of the Texas Pecan Growers Association. Troy's 27 years of growing experience shape his innovative approach to regenerative agriculture.

Since 2019, Troy has embraced regenerative practices: eliminating mowing and herbicides, and using wood chips and Johnson-Su bioreactors to boost soil health. His orchard serves as a research hub for institutions like the Noble Research Institute, providing data on soil, nut nutrition, and economics. Troy's work inspires farmers and bridges the gap between academia and agriculture.

In this episode, John and Troy discuss:

• Troy's transition from the composite jet engine industry to becoming a first-generation pecan farmer

• Shifting to regenerative practices, including eliminating mowing

• Reducing nitrogen inputs from 80-100 pounds per acre to just 2.4 pounds

• Using bats for pest control and their impact on reducing insecticide use in pecan orchards

• The importance of data-driven farming, with insights from soil and leaf analyses showing increased nutrient availability

• Troy's leadership in fostering collaboration between farmers and academia to advance regenerative agriculture research

Additional Resources
To learn more about Troy and to purchase Swift River Pecans, please visit: https://www.swiftriverpecans.com/

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

 

Helen Atthowe is an author and farmer who has worked on developing systems that focus on ecological health by utilizing living mulches and minimal tillage. She is passionate about using the natural nutrient cycles present in ecosystems to reduce system inputs. Her research and experience have shown how focusing on the system can impact weed, disease, and pest management. 

She and her late husband, Carl Rosato, co-owned and operated a certified organic orchard in California, where they pioneered methods for raising apples, peaches, and other crops to replace the need for pesticides. She also farmed and conducted additional research at Wood Leaf Farm in Eastern Oregon until early 2023. Now living in Western Montana, she is starting a new farm where she has planted a no-till orchard. Atthowe has a master's degree in horticulture from Rutgers University and has worked in education and research at many other institutions.

In this conversation, John and Helen discuss:

• No-till living mulch systems in orchards

• Managing ecological systems with residues

• Strategies for disease and pest management 

• Minimizing inputs and maintaining yields

• Mowing management and the importance of timing

• Thinning and pruning practices

• Vole management outcomes

• Selective strip-till system in vegetable production 

Click here to check out Helen's new book, The Ecological Farm

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. 

~ 

VIDEO: To learn more from John Kempf about regenerative agriculture, watch this conversation between John and three AEA grower partners about how regenerative agriculture is changing lives and conventional farming: https://youtu.be/n9U6GwbYPDk

Charles Eisenstein is a speaker, teacher, and author. A graduate of Yale University with a degree in Mathematics and Philosophy, his work covers various topics, including human civilization, economics, spirituality, and ecology. His published works include "The Coronation," "The Ascent of Humanity," "Sacred Economics," "The More Beautiful World Our Hearts Know Is Possible," and "Climate—A New Story." In the last-mentioned title, he argues that reducing environmental discourse into the single issue of global warming is a huge mistake for the environmental movement. The book focuses instead on the "Living Planet" view, envisioning what our relationship to nature might be if we saw that everything is alive, conscious, and sacred. Overall, his primary interest is exploring the boundaries of what is possible according to our received beliefs, habits, technologies, and ways of knowing.

In this conversation, John and Charles discuss:

• What defines regeneration

• What we need to do to embrace regenerative landscapes

• Why the quality of our life depends on the quality of our relationships 

• Indigenous knowledge of landscape management 

• The understanding of what real wealth is

• The differences between control and responsibility 

• The Importance of exercising our capacity to create

• The growing community and movement of regenerative farmers
  
  

To learn more about Charles Eisenstein and his work, please visit his website at https://charleseisenstein.org/ or subscribe to his substack at https://charleseisenstein.substack.com/ 

To learn more about his published work, please visit https://charleseisenstein.org/books/ 

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 is 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 their 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 around the world. Learn more about AEA's regenerative programs and products: https://www.advancingecoag.com/

~ 

VIDEO: To learn more from John Kempf about regenerative agriculture, watch this conversation between John and three AEA grower partners about how regenerative agriculture is changing lives and conventional farming: https://youtu.be/n9U6GwbYPDk

 

Steve Tucker is a western Nebraska dryland producer who has been farming for 30 years. He introduced regenerative practices into his operation over 10 years ago and values diversity in his approach. Growing upwards of 10 crops per year while integrating livestock, such as chickens, pigs, and cows. Steve also uses no-till farming practices and biological applications on his farm. Steve advocates for growers to market themselves in order to access more opportunities and advises them to look for alternate streams of income for the crops they are growing. 

Steve runs Agriforce Seed with his business partner Jeff Olsen. Steve grows sunflower, hay millet, oats, yellow field peas, winter wheat, Golden German hay millet, and forage pea/oat hay blends. His ultimate goal is to build soil health by mobilizing soil microorganisms to grow better, higher quality, more nutrient-dense food. 

In this episode, John and Steve discuss:

• Being content with the size of the farm you operate

• Making connections by marketing yourself 

• Selling by the pound vs selling by the bushel

• Looking for sales opportunities around you to sell

• Pursuing multiple streams of farm income 

• Identifying opportunities that come from promoting more life on the farm

• Using biologicals, including AEA's BioCoat Gold

• Finding the freedom of doing things on your own terms

AgriForce Seed is Nebraska's largest pulse seed producer. Agriforce provides yellow peas, chickpeas, and many other types of pulse crop seeds. Also available are hay millet seed and a large selection of cover crop seeds and forage products. To learn more, call 308-289-4853

To learn more about AEA's BioCoat Gold, please visit - https://land.advancingecoag.com/buy-biocoat-gold-now

About John Kempf
John Kempf is the founder of Advancing Eco Agriculture (AEA). A top expert in the field of 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
The recognized leader in regenerative agriculture since 2006, AEA is on a mission to help growers become more resilient, efficient, and profitable. 

AEA works directly with growers on the application of 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 their products and data-driven services by working hand-in-hand with growers in North America 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 around the world who thirst for actionable information about regenerative agriculture.

Learn more about AEA's regenerative programs and products. 

~ 

VIDEO: For more conversations with John Kempf about regenerative agriculture, watch this amazing conversation between John and three AEA grower partners about how regenerative agriculture is changing lives and conventional farming: https://youtu.be/n9U6GwbYPDk

 

Joel Williams is an independent plant and soil health educator who provides lectures, workshops, and consultations on soil management, plant nutrition, and integrated approaches to sustainable food production. Joel enjoys designing farming systems that focus on managing soil biology along with crop and soil nutrition to optimize plant immunity and soil function. He has extensive experience working in Australia, the UK, and Canada, integrating soil and plant analyses as a joined-up strategy for managing production.

In this episode, Joel and John discuss:

• The differences between the chemistry vs. biology approach

• The importance of a well-structured soil

• Reasons for using biological seed coatings

• Efficiencies of foliar applications vs. soil applications

• Crop responses to incremental changes over extended periods

• Strategies for efficient foliar applications

• Nitrogen applications and management

• Yield expectations during regenerative transitions

To learn more about Joel and his work, please visit https://integratedsoils.com/

About John Kempf
John Kempf is the founder of Advancing Eco Agriculture. 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
The recognized leader in regenerative agriculture since 2006, Advancing Eco Agriculture (AEA) is on a mission to help growers become more resilient, efficient, and profitable. 

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 most. 

AEA has created real and lasting change on millions of acres with their products and data-driven services by working hand-in-hand with growers in North America 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 around the world.

Learn more about AEA's regenerative programs and products, and check out the Regenerative Agriculture Podcast.

~ 

VIDEO: For more conversations with John Kempf about regenerative agriculture, watch this inspiring webinar featuring John and three AEA grower partners that share how regenerative agriculture is changing the way they farm and live: https://youtu.be/n9U6GwbYPDk

 

John Warmerdam is a third-generation stone fruit grower in the San Joaquin Valley of California. His grandfather came to the area from Holland in 1911 and started a small farming operation that John's father, John N. Warmerdam, eventually took over. Today John and his dad farm over 350 acres of peaches, plums, nectarines, kiwi, and almonds. The Warmerdams also have one of the largest cherry-growing operations in the southern San Joaquin Valley and have been innovators in the fruit packing industry for 45 years. In this episode, they discuss:

• Cultural management practices for stone fruit
• Transitions in his farming systems
• Mite management
• Driving factors for considering regenerative management
• Pruning and thinning management
• Future water usage issues
• Generational shifts in farming

Additional Resources:
Concepts for Understanding Fruit Trees by Theodore DeJong

Learn more about Warmerdam Packing
Learn more about John Warmerdam

About John Kempf
John Kempf is the founder of Advancing Eco Agriculture. A top expert in the field of 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
The recognized leader in regenerative agriculture since 2006, AEA (Advancing Eco Agriculture) is on a mission to help growers become more resilient, efficient, and profitable. 

AEA works directly with growers on the application of 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 their products and data-driven services by working hand-in-hand with growers in North America 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 around the world who thirst for actionable information about regenerative agriculture.

Learn more about AEA's regenerative programs and products and check out the Regenerative Agriculture Podcast. 

VIDEO: For more conversations with John Kempf about regenerative agriculture, watch this amazing conversation between John and three AEA grower partners about how regenerative agriculture is changing lives and conventional farming: https://youtu.be/n9U6GwbYPDk

Dr. Erin Silva is an Associate Professor and State Extension Specialist in Organic and Sustainable Cropping Systems in the Department of Plant Pathology as well as the Director for the Center for Integrated Agricultural Systems in the College of Agricultural and Life Sciences at UW-Madison. 

After completing a Ph.D. in Horticulture at Washington State University, Dr. Silva obtained a faculty position at New Mexico State University. During her tenure at NMSU, Dr. Silva taught courses on organic vegetable production, including an experiential learning course integrating the campus working student organic Community Supported Agriculture (CSA) farm. Dr. Silva initiated several organic research projects at NMSU, including work on a cover crop-based reduced tillage approach for organic vegetable crops and breeding vegetables for organic production systems.

These research themes continued as Dr. Silva moved into the first organically focused research position at the UW-Madison College of Agricultural and Life Sciences in 2006. Through her work at UW-Madison, she has developed an internationally recognized program that improves the management of organic production systems and increases the profitability and sustainability for organic producers and rural communities.

In this episode, Dr. Silva and John discuss the following:

To find out more information about Erin's research, please visit https://uworganic.wisc.edu/ograin/. OGRAIN, The Organic Grain Resource and Information Network, exists to provide farmers access to research and to form a community of organic grain producers.

About John Kempf
John Kempf is the founder of Advancing Eco Agriculture, a plant nutrition and biostimulants consulting company. A top expert in the field of 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 are growing that supply.

​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
The recognized leader in regenerative agriculture since 2006, AEA (Advancing Eco Agriculture) is on a mission to help growers become more resilient, efficient, and profitable. 

AEA works directly with growers on the application of its unique line of crop nutritional supplements 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 their products and data-driven services by working hand-in-hand with growers in North America 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 around the world who thirst for actionable information about regenerative agriculture.

Learn more about AEA's regenerative programs and products.

VIDEO: For more conversations with John Kempf about regenerative agriculture, watch this amazing conversation between John and three AEA growers about how regenerative agriculture is changing lives and conventional farming: https://youtu.be/n9U6GwbYPDk

Fred Provenza, Professor Emeritus of Behavioral Ecology at Utah State University, is the co-founder of BEHAVE (Behavioral Education for Human, Animal, Vegetation and Ecosystem Management), an international research and outreach program that seeks to understand the principles of animal behavior. For the past 30 years, this group has produced ground-breaking research that laid the foundations for what is now known as behavior-based management of landscapes. 

Through his research, books, and speaking engagements, Fred has paved the way for the behavior-based management of landscapes. His work has influenced researchers across disciplines.

In this episode, Fred and John Kempf discuss:

• The consciousness of plants and animals, and our relationships to them
  
• The relationships between domestic animals, crops, and healthy landscapes
  
• Fred's understanding of the gut microbiome of livestock and how it changes with diverse diets 
  
• The pathway for regenerating millions of arid acres in the US West
• Appreciating the culture and heritage of animals 
• The functional significance of both human and animal family structures
  

Fred has authored three books:

• Nourishment: What Animals Can Teach Us about Rediscovering Our Nutritional Wisdom: https://bookstore.acresusa.com/products/nourishment
• • Also available on audiobook: https://www.audible.com/pd/An-Original-Audiobook-Adaptation-of-Nourishment-Audiobook/B0BKH5NBF5
    
    
• Foraging Behavior: Managing to Survive in a World of Change: https://www.amazon.com/Foraging-Behavior-Managing-Survive-Change/dp/0970389922
  
  
• The Art & Science of Shepherding: Tapping the Wisdom of French Herders: https://bookstore.acresusa.com/products/the-art-and-science-of-shepherding

Support For This Show & Helping You Grow

This show is brought to you by Advancing Eco Agriculture (AEA), leaders in regenerative agriculture since 2006.

AEA produces the highest quality biological and mineral nutrition products along with offering Plant Sap Analysis, and regenerative program development for your farm. 

If you are a large-scale grower looking to increase crop quality, resilience, and profit — email hello@advancingecoag.com or call 800-495-6603 today to be connected with a dedicated AEA regenerative agriculture crop consultant. To learn more visit https://www.advancingecoag.com 

~ 

VIDEO: For more conversations with John Kempf about regenerative agriculture, watch this amazing conversation between John and 3 growers about how regenerative agriculture is changing lives and conventional farming: https://youtu.be/n9U6GwbYPDk

Kelly Mulville, a veteran agricultural consultant, is the Vineyard Director at Paicines Ranch in San Benito County, California. For more than 25 years, Kelly has been obtaining impressive results by merging his experience in viticulture with his understanding of Allan Savory's holistic grazing management techniques. His approach to extended-season vineyard livestock grazing and other ecological practices continue to capture an audience of vineyard managers around the globe.

Kelly and John discuss in this episode:

• How Kelly developed practices around incorporating sheep into his vineyard management.
• Flooring a wildlife biologist with the bird population data on Kelly's vineyard after implementing new practices.
• The role plant-grazing animals play in reducing insect pressures.
• Kelly's cover cropping strategy and how it has led to a diversity of 50 species of plants growing in the vineyard.
• The specific holistic management techniques inspired by Allan Savory's work that have contributed to vineyard success.
• The adaptability of these practices on other crops like nuts and tree crops.

 

Joe Lewis is an internationally renowned scientist recognized for his work in entomology and agricultural studies. His discoveries in the behavioral and chemical interactions of parasitoids, insect herbivores, and plants have played a critical role in our understanding of ecological growing. He is also the author of A New Farm Language: How a Sharecropper's Son Discovered a World of Talking Plants, Smart Insects, and Natural Solutions.

Listen as Joe and John discuss:

• Joe's introduction to agriculture growing up on a Mississippi cotton farm
• The discovery of plants utilizing chemical compounds to alert parasitic wasps to the presence of caterpillars.
•  The first demonstration of associative learning in parasitic wasps.
• Sensitivity of signals between plants and parasitic wasps, including how they differentiate from food and host.
• Environmental impacts that have led to unbalanced increases in insect pressures.
• The value of cover cropping to provide a nectar source for insects during production season.
• Changing the paradigm from "how to kill this pest" to "why is this pest a pest?"

A New Farm Language by Joe Lewis: https://bookstore.acresusa.com/products/a-new-farm-language

Adam Chappell is a regenerative grower and cover crop advocate from Cotton Plant, Arkansas. Adam started growing with his dad and brother on their 7,500 acre property in 2005, but by 2009 pigweed issues alone had nearly pushed them into bankruptcy. Knowing there had to be a better way, Adam began educating himself about the power of regenerative agriculture, implementing a cover cropping strategy that he claims saved the family farm. Today, Adam's operation grows a variety of broadacre crops and continues to make strides in ecological health and crop performance.

Throughout their conversation, Adam and AEA Founder John Kempf discuss:

• Adam's start in agriculture and how cover cropping brought the farm "from the brink of bankruptcy to a profitable enterprise."
•  Adam's current methodologies for crop rotation and cover cropping.
• How the adoption of regenerative practices has contributed to improved profitability.
• Adam's background in entomology and ecology and the shifts in insect populations he has seen over time.
• Questioning the necessity of soil testing and becoming wary of "sales tools."
• Implementing Dr. Norman Lupo's root intensification method and other row spacing strategies.
•  Livestock integration and the story of Adam's first purchase of cattle.
• Why Adam's goals for the future include "getting smaller."

Jake Ewing farms 1,300 acres of corn in Western Illinois, a relatively small operation compared to neighboring farms. Jake's farm has been shaped by the need to compete in a region dominated by large-scale commodity crop production, forcing him to rethink traditional approaches to corn farming, and developing a focus on innovative, cost-effective practices. 

Jake's journey toward regenerative agriculture began with the purchase of a high-clearance sprayer, initially intended for conventional applications. This led to experiments with foliar fertilizers and reductions in herbicides and fungicides. His focus on soil health and plant nutrition has boosted yields to 275-285 bushels per acre, surpassing county averages while lowering costs.

In this episode, John and Jake discuss:

• Reducing nitrogen applications to 160 pounds per acre, with only 100 pounds soil-applied, using foliar urea for efficiency.

• Foliar applications of manganese, copper, and cobalt to improve plant health and delay senescence, increasing yields.

• How foliar sprays in the evening with larger droplets enhance nutrient absorption by keeping solutions liquid longer.

• Eliminating insecticides and cutting fungicide use to a half-rate single pass, aiming for total elimination.

• How adequate manganese, copper, and zinc levels in sap tests reduce disease pressure, minimizing fungicide needs.

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

 

Rick Clark is a fifth-generation farmer from Warren County, Indiana. Driven by a desire to work alongside mother nature, Rick has been implementing regenerative practices on his farm for almost a decade. Rick's commitment to soil health has allowed him to grow his operation to 7000 organic, no-till acres, in part by employing a variety of cover cropping and weed control techniques.

In their conversation, Rick and John Kempf discuss:

• Rick's journey to a fully organic operation
• Conventional agriculture's "dependency on chemistry" and the best practices for conventional burn down
•  Rick's humbling experiences experimenting with cover crops in the early days
• How planting multiple cash crops together could be the future of agriculture
•  Handling foxtail and other difficult weeds through regenerative practices  
• The power of diversity and rotation in a no-tillage system
• Rick's take on farm economics and how he  is saving almost $1.7 million a year in inputs 

Tim Parton is a regenerative agriculture advocate and Farm Manager at Brewood Park Farm in the United Kingdom. Tim has been implementing regenerative practices on his 300-hectare estate for over 15 years. He has received several accolades for his work, such as being named the Arable Innovator of the Year by British Farming Awards and receiving the Farm Innovator of the Year award from Farmers Weekly.

Throughout their conversation, Tim and John discuss:

• Tim's background and retreat from intensive pesticide use.
•  How balancing plant nutrition helped Tim cultivate canola seedlings that are resistant to flea beetles.
• Tim's experience with Barley Yellow Dwarf Virus (or BYDV) and how he manages aphids in an ecological system.
• Foliar application systems and their economic impacts.
• Increases in commodity fertilizer prices and what this means for the financial viability of regenerative agriculture.
• How Tim has managed to not apply any NPK fertilizers for more than a decade.
• The cultural management practices that have replaced fungicide applications on Tim's farm.
• The importance of carbon sequestration, educating consumers, and sharing information among growers.

James Johnson is a fourth-generation farmer in New Mexico and the Vice President of Carzalia Valley Produce. When James finally took over the family farm in the early 2000s the outlook of his operation seemed grim. After many years of trial and error with various practices, James found the Advancing Eco Agriculture team where he discovered the benefits of regenerative agriculture.

Thanks to his partnership with AEA, James achieved an outstanding yield of 1,490 lbs/acre for Pima Cotton at the end of harvest season 2020 while his county average was 880 lbs/acre!

In this episode, James and AEA founder John Kempf discuss:

• The shift in agronomy management on James' farm over the last 20 years.
• James' first encounter with John Kempf and the similarities in their personal stories.
• The long-term effects of herbicide, insecticide, and pesticide use on crops from the perspective of a self-declared "recovering glyphoholic"
• Solving onion thrips and western flower thrips pressure with regenerative foliar applications, rather than insecticides.
• James' observations on chlorpyrifos and diazinon—how their use affects non-target species and overall soil biology.
• The technology James uses as a self-proclaimed early adopter, including evapotranspiration platforms and an AI robot that pulls weeds.

Dale Strickler is an agronomist at Green Cover Seed and prominent author primarily focused on soil health. Dale grew up on a family farm outside Colony, KS, and received both his bachelor's and master's degrees in agronomy from Kansas State University. Dale has been an advocate for the use of cover crops for over three decades and continues to experiment, achieving increasingly exciting results.

Dale has published two books, The Drought-Resilient Farm and Managing Pasture. His third book, The Complete Guide to Restoring Your Soil, will be released later this year.

In this episode, Dale and AEA Founder John Kempf discuss:

• Dale's agricultural background and what inspired his fascination with cover crops.
• His experiences with heavy clay soil and implementing a subsurface, drip-irrigated pasture.
• How regenerative practices can affect water-holding capacity of soils and restore small water cycles.
• Dale's most memorable moments in his consulting work with growers across the country.
• Hand cropping, intercropping, and other practices forgotten by mainstream, mechanized agriculture.
• The reason farmers need to be "thinking like a scientist" and the power of self-education.  

John Fagan is the Chairman & Chief Scientist at the Health Research Institute, also known as HRI Labs, in Fairfield, Iowa. HRI provides testing services that focus on the nutritional value and biofunctionality of food sources. HRI's research and collaboration efforts continue to help grow the global regenerative agriculture movement in myriad ways.

Throughout their discussion, Fagan and John discuss:

• The scope of Fagan's work at the Health Research Institute.
•  How chromatography, mass spectrometry, and other analytical tools allow Fagan to identify plant and animal compounds.
• Fagan's research in comparing conventional vs organic production methods and his key takeaways.
• The diversity and variability of plant compounds and their potential for innovation in the world of agriculture.
• Fagan's tentatively named "Farmer Led Innovation Network" and how it is combining cutting-edge science and data collection.  
• How evidence of glyphosate presents across different crop types, agricultural products, and soil profiles.
• The evolution of glyphosate detection and what science can tell us about glyphosate levels in our food.

Check out the glyphosate research mentioned by Fagan here: https://johnkempf.com/perspective-on-glyphosate-challenges/

Nicole Masters is an internationally recognized agroecologist from New Zealand. Fortified by her studies in ecology and plant physiology, Nicole currently serves as the Director of Integrity Soils, a collection of regenerative agriculture coaches that assist growers around the globe. Nicole is also the author of "For the Love of Soil: Strategies to Regenerate Our Food Production Systems."

In this episode, Nicole and John discuss:

• Nicole's background in vermicompost and her strategy of customizing microbial applications to produce specific outcomes.
• The current rise in research on microbial quorum sensing and quorum signaling.
• Many case studies and examples that explain relationships between soil life and nutrition profiles and weed populations.
• The function of biology in response to plant signals and in enhancement of plant immune systems.
• The practice of bio-priming seeds or land, and how it helps to produce disease-suppressive soils, and to regenerate native plant populations.

Harriet Mella is an independent Austrian researcher known for her work uncovering the unexplained phenomena of plant growth and development. Informed by her background in microbiology, mycology, and biochemistry, Harriet has a unique capacity to describe little-known connections between emerging biological research and agriculture.

During the interview, Harriet and John discuss: 

• Observations on epigenetic expressions and the role of optimal nutrition.
• The flexibility of plant architecture and its direct correlation with microbiome health.
• Harriet's insights on zodiac rhythms, humic substances, Biodynamic methods, and numerous first-hand agricultural experiences.
• When a plant is no longer absorbing nitrate and how this affects water use efficiency and carbon cycling.
• Harriet's findings on biophotonics and dark septate endophytes, and her explanation of their impact on plant health.  
• Building stable humic substances during the winter months with the assistance of specific fungal groups.

Harriet Mella's new online course, "Carbon Micro Cycling," explores the connections between soil carbon and soil fertility. Sign up for the course on Kind Harvest today! https://kindharvest.ag/courses/ra-cc-carbon-course/

Steven Bierlink is an apple grower located in Quincy, WA. When Steven returned to work on his family operation after graduating with a business degree, he was driven to meet the many challenges their orchard faced. Looking for solutions to bitter pit, cork spot, and lenticel rot, Steven sought out the management practices that could renew the health of their orchard.

Today, Steven abides by meticulous observation in his management practices that have brought many exciting successes, notably on his Honeycrisp blocks which have packed out at a stunning 160 bins per acre.

On this episode, Steven and John discuss:

• Overcoming bitter pit in Honeycrisp apples by altering the interplay among excessive potassium applications, calcium timing, and manganese availability. 
• Steven's focus on observation resulted in a shift away from his previous conventional operational methods. 
• How Steven balances data collected from fruit analysis and sap analysis to maximize marketable fruit production.
• Managerial philosophies for happy, engaged employees, healthy work-life balance, and why he chooses to maintain a smaller-scale farm.
• Virtually elimination of alternate-year bearing, through a combination of pruning, bud and spur management, PGR's, nutrition, and lime-sulfur sprays.
• The importance of growers owning the decision-making process, working alongside consultants.

Jason Hobson is one of the initial Regenerative Agriculture Consultants at AEA, working alongside John Kempf in the early years and becoming the Chief Executive Officer in 2015. Jason joined AEA in 2011 and quickly became the lead consultant for larger scale operations, building relationships with distributors and other partners along the way. He gained his knowledge of soil fertility and plant nutrition through hands-on experience, developing a passion for agronomy and regenerative practices that fuels him today.

Throughout their conversation, Jason and John discuss:

• How one Wendell Berry book would change Jason's career path forever.
• AEA's approach to nutrient and crop management, how it differed from conventional wisdom.
• Highlights from the last decade of working together: organizational victories and new agronomic discoveries.
• Jason's thoughts on the "layering of silver bullet solutions" and how farms can degrade in search of a cure.
• Common themes among growers and organizations that have seen success while working with AEA.
• The fallacy of nitrogen and other limiting factors for healthy crops.

Alvin Peachey is an Amish organic dairy farmer from central Pennsylvania. Over the course of more than a decade, Alvin has grown his operation to 90 100% grass-fed cows on 92 acres, implementing regenerative practices that flips the script of the status quo for dairy farmers.

In this thought provoking and practical conversation, Alvin and John discuss:

• Alvin's background as a dairy farmer starting with only 25 cows and 10 replacements.
•  The difference between rotational grazing and management-intensive grazing.
• How Alvin tracks and manages his cost of production and how his economic models diverge from the mainstream.
• Unique approaches to creating balanced and diverse nutritional profiles, not just in grazable forages, but also in stored winter feeds.
• Important considerations for maximizing sugars and proteins in baleage. 
• The genetic and structural qualities Alvin looks for in dairy cows.
• Alvin's thoughts and observations on the financial future of dairy farming.

"For the crop production acres, we have no budget on fertilizer… because we have unlimited potential, so why would we have a budget? Right?" -Alvin Peachey

  

Steven Thompson is the co-founder of Analemma Wines in Mosier, Oregon, where he and his team have transformed a conventional cherry orchard into a vibrant, biodynamic vineyard. With a background in wine and viticulture, Steven focuses on creating a farm that reflects beauty, biodiversity, and intentional design.

Through regenerative practices, Steven has eliminated synthetic inputs, transitioned to dry farming, and built soil health using sap analysis, foliar nutrition, and microbial inoculants. His approach has improved vine vigor, reduced pest pressure, and enabled clean native yeast fermentations that capture a true sense of place.

In this episode, John and Steven discuss:

• Transitioning from conventional cherries to biodynamic grapes

• Attracting pollinators with lavender and flowering hedgerows

• Managing powdery mildew with balanced nutrition and biologicals

• Soil improvements that enabled dry farming and deeper roots

• Using sap analysis to reduce foliar input dependency

• Boosting disease resistance through regenerative practices

Additional Resources
To learn more about Steven and Analemma Wines, please visit: https://analemmawines.com/

To download a copy of the Plant Health Pyramid, developed by John Kempf, please visit: https://advancingecoag.com/plant-health-pyramid/

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

 

Jesse Frost is the Co-Owner of Rough Draft Farmstead in central Kentucky and host of the No-Till Market Garden Podcast. Jesse's rich background in researching and experimenting with no-till practices lead to his first book, "The Living Soil Handbook: The No-Till Grower's Guide to Ecological Market Gardening," which will be published this summer.

Throughout their conversation John and Jesse discuss:

• How Jesse got his start as a farmer and how a mission to uncover regenerative techniques lead to a promising career in market gardening.
• The economic opportunities surrounding market gardening, including the positive impact of collaboration and Jesse's thoughts on land ownership.
• The best way to strategize and implement a direct-to-consumers business model.
• Two management styles that work for no-till growers on a smaller scale: Jesse's thought on the basic cover crop model and the deep compost mulch system
• An overview of the four different types of compost: inoculating compost, fertilizing compost, nutritional compost, and mulching compost.
• The current state of the average farmer's psyche and the power of relationships and community building.
• Jesse's current intercropping practices and how they are implemented for pest and disease control.

Pre-order Jesse's book here: https://www.notillgrowers.com/livingsoilhandbook/d9z5gkf1bbnhu0w5xxb3trngiqhwgo

Check out "The No-Till Organic Vegetable Farm: Human-Scale Methods for Intensive Commercial Production and Ecological Health" by Daniel Mays here: https://www.frithfarm.net/book.html

 

Jon Stika is an agronomist and former soil health instructor with the USDA's Natural Resources Conservation Service (NRCS). Officially retiring in 2015, Jon now spends his time as environmental consultant for those looking to gain insight on the biological systems of agriculture. Jon is also the author of "A Soil Owner's Manual: How to Restore and Maintain Soil Health," which was published in 2016, yet continues to have an impact on agricultural thought leaders around the globe.

Throughout their conversation, Jon and John discuss:

• Jon's realization that soil is not a chemical system, but a biological one.
• The impact of using synthetic fertilizers for several decades and how this has "sidelined" the true biology of our fields.
• What it means to be energy inefficient and the impact on mainstream agricultural systems and practices.
• Jon's 15-year journey to a regenerative approach; how rapid implementation and economics can inspire other growers to transition to integrating biological methodologies.
• The differences between building soil from the foundational bedrock versus the act of regenerating soil.
• Jon's belief in the power of educating beyond the growers, working with lenders, banks, agronomists, and landowners to help them understand and support the transition to regenerative agriculture.
• How models used in mainstream agriculture—and even sustainable agriculture—operate on a foundation of "dysfunctional soil."

Pick up a copy of Jon's book, "A Soil Owner's Manual: How to Restore and Maintain Soil Health," today! https://www.goodreads.com/book/show/30084638-a-soil-owner-s-manual 

Jay Fuhrer is a Conservationist & veteran Soil Health Specialist from the Natural Resources Conservation Services, located out of Bismarck, North Dakota. With over 4 decades of experience, Jay's work has been critical to the widespread implementation of regenerative agriculture across the globe. Of his many contributions, Jay is most known for developing the 5 Soil Health Principles: establishing soil armor, minimizing soil disturbance, continuing live plant and root presence, and integrating livestock grazing systems.

Throughout their conversation, Jay and John discuss:

• Jay's early years at the NRCS, and his desire to move forward with agriculture's best interest at heart.
• The story of how Jay and his colleagues started a 150-acre demonstration farm with a focus on natural resource education.
• Examples of new research and discoveries being made at Menoken Farm, including the implications of water hydrology systems and the power of encouraging soil biology.
• Jay's observations from conducting Phospholipid fatty acid (PLFA) analysis and measuring infiltration rates over the years.
• Assisting growers by "starting with the geology" and how Jay's soil recommendations are rooted in the history of the land.
• Proper livestock integration and the benefits of diversity when it comes to grazing.
• The shortcomings of agricultural system labels and Jay's reasoning for working with growers of all backgrounds.
• Jay's concerns with shrinking native range land in the Dakotas and why he believes it is an ecosystem that we should maintain into the future. 

Ben Taylor-Davies is a farmer and regenerative agriculture consultant from the United Kingdom. Ben was a conventional agronomist until his wife persuaded him to apply for an award through the Nuffield Farming Scholarship Trust which enables farmers to travel and learn agricultural methods from around the globe. This ignited Ben's passion for regenerative agriculture and discovering better ways to treat soils, crops, and livestock. Ben currently shares his stories, both personal and professional, on his website RegenBen.com. He is also currently finalizing his first book, "MORE-ON: How to get off the UK agriculture's treadmill of input farming."

Throughout their conversation, Ben and John discuss:

• How the Nuffield scholarship program allowed Ben to broaden his views on successful ways to farm from around the globe.
• The current management practices being implemented on Ben's 500-acre farm in the UK and how these practices have evolved over the years.
• Ben's "three free things" (sunlight/energy, precipitation, and carbon dioxide) and why they should be priority number one for all growers.
• Perspectives on carbon dioxide delivery and how farmers can improve their CO2 supply.
• The vast diversity of soil types and climates found within the UK.
• The UK's current mainstream agricultural methods and financial shortcomings of managing an ecosystem through high input costs.
• John and Ben discuss their recommended reading lists for growers.

Check out Ben's website at www.regenben.com!

For more information on his latest book, go to https://www.regenben.com/about/the-book/

Cannon Michael is a 6th generation family farmer in California's Central Valley. When Cannon first started working at the Bowles Farming Company, it was a broad-acre row crop operation, focused on cotton, barley, and alfalfa. After 15 years of overhauling the farm's management practices, Bowles now incorporates both organic and conventional methods as he raises a vast array of vegetable crops: tomatoes; watermelons; garlic; onions; herbs; and many more.

Throughout their conversation John and Cannon discuss:

• The major changes over the 160-year history of Cannon's family farm, as well as the current scope and scale of his growing operation.
• What it means to be a grower in California: The culture of innovation, interacting with a rigorous business climate, strict regulations, and interest in promoting fair practices for people and the environment.
• A prediction around agriculture's decentralized, technology-driven future and how it will impact growers.
• The power of branding partners, communication, and the advantages of telling your story to end consumers.
• How bandwidth and a fluctuating environment can lead to significant limitations on operational efficiencies.

Jay Hill is a conventional farmer and agricultural visionary from the American Southwest. Jay is a new breed of American farmer, focused on reinvigorating the industry through a new perspective on what is possible for large-scale growers. Through his social media presence and weekly podcast, Jay is calling on farmers across the globe to abandon their old ways of operating and take back the role of "business owner" from outdated intermediaries.

Throughout their conversation, John and Jay discuss:

• How Jay's growing operation has evolved over the years to be less resource exhaustive.  
•  Why farmers need to position themselves as both marketers and business owners
• Jay's transition from "Price Taker" to "Price Maker," and how partnerships in processing give growers more control over their operation.
• The public perception of American farmers and what needs to be done change the narrative.
• Strategies to incentivize growing a more nutritious and agronomically beneficial product, and the role of the federal government in this process.  

Dr. Dwayne Beck is well known for being one of the pioneers of no-till agriculture in central South Dakota and across the High Plains. For more than three decades, Dr. Beck has been creating comprehensive systems for both irrigated and dryland crop production throughout the region, educating growers on the power of crop rotation, diversity, and other regenerative practices. He currently serves as the Research Manager at the Dakota Lakes Research Farm, a non-profit made up of farmers committed to sustainable land practices.

On today's episode, John and Dwayne discuss:

• Dwayne's background and his earlier work assisting local growers with their irrigation systems
• The continuing decline of the Ogallala Aquifer and how water infiltration can be improved by implementing no-till agricultural practices.
• Addressing the often-overlooked aspects of irrigation, such as percolation and water delivery, and how it affects soil health.
• Dwayne's observations on lake bottom soils, the power of macropores, and the prevalence of summer fallowing in the High Plains.
•  Utilizing de-percolation strategies to maintain proper nutrient levels in your soil.
• Using competition, sanitation, and rotation to control weeds, diseases and insects. 
•  Dwayne's historical research on nutrient cycling and fertilizer placement. 
• Dwayne offers up a broader historical perspective on how agriculture, human nature, and mother nature  work together.
• A discussion on why moving to no-till options for all crops including potatoes, carrots and sugar beets are engineering and genetics problems.
• The shared vision, but much different methods, between regenerative agriculture vs. organic agriculture.

Rick Haney is a renowned researcher at the U.S. Department of Agriculture and the creator of the Haney Soil Analysis, an innovative extraction procedure to assess overall soil health and plant mineral availability. Today, John sits down with Rick to hear his story and discuss a future of agriculture centered around agronomic realities and biological processes.

Throughout the episode, John and Rick cover a wide array of topics:

• The journey Rick took to discover an improved system for analyzing soil health, eventually leading to the development of his namesake soil assay.
• How Rick's work and an emphasis on data can help growers save an average of $20 per acre in nitrogen applications.
• Over-fertilization and what soil respiration says about the fertility of a field.
• Rick's battle with calibrations and the industry's collective leaps in agronomic understanding since the 60's.
• The work of Dr. Richard Mulvaney, namely the Illinois Soil Test, and how it compares to Haney's soil nitrogen report. 
• The shortcomings of mainstream agronomic research and the power of "listening to nature."
• The importance of using water and biological activity as the gauge of soil mineral release rather than acids and extractants to judge soil mineral content.
• Why many growers are routinely able to reduce Nitrogen and Phosphorus inputs.
• The importance of looking at real yields rather than soil test data as the sign of a well-functioning fertility program.
• The power of  embracing new developments in ag research and the future of in-field sensors.

Bob Quinn is a 30-plus year veteran of Regenerative Organic practices and founder of Kamut International, an organization devoted to high quality Khorasan wheat and sustainable agricultural practices.

After receiving his PhD in plant biochemistry from UC-Davis, Bob returned home to work on his family's wheat and cattle ranch just outside of Big Sandy, Montana. In the mid 80's, the farm became his "laboratory" as Bob began implementing regenerative organic systems long before they rose to prominence. The Quinn's began planting a Khorasan wheat they would call "Kamut"—an ancient Egyptian word for "wheat"—which would end up seeing a lot of success with whole grain bakeries in Southern California.

"My business philosophy is start small and build on your success. I don't have a big pile of money, so I can't go out and just try big experiments, so I try small experiments. If they're successful, then I build on those. And that's what we did, we started with a half an acre [of Kamut®] which was all that seed that we had in 1988—30 years later, we are contracting with 250 organic regenerative farmers in Montana, Alberta, and Saskatchewan for over 100,000 acres of this stuff."

Kamut® is a distant relative to the modern wheat crop that is known for its unique flavor and health benefits. Ancient Grains like Kamut® see much lower yield potential than modern wheat, which over time lead some manufacturers to mix Kamut® with lower quality grains. In an attempt to protect the quality of the grain and the end consumer, Bob decided to trademark the grain, guaranteeing an unhybridized, unmodified, and organic product for their growing list of customers—in fact today, a staggering 75% of their grain goes to Italy.

During the episode, Bob goes into detail about how improved testing equipment led to a surprising discovery about minute glyphosate levels in their crops. Kamut International has been organic since its inception, but at one point almost a third of their farmers were sending grain that tested slightly higher than ten parts per billion in glyphosate. Bob was astounded when he discovered that glyphosate is so prevalent in American agriculture that trace amounts can be found in the rain during the growing season. Since this discovery, Kamut International has overhauled their testing protocols and mitigated trace glyphosate levels whenever possible.

Whether you are the buyer, the manufacturer, or the consumer, Bob believes in a "everybody wins" approach to business. He believes his impact and scale was achieved by paying farmers more, so he prides himself in the ability to implement economic incentives anywhere he can. Bob recalls in his conversation with John that almost 30 years ago, he began offering three times the amount of the commodity wheat price for Kamut® wheat, which proved to be a very effective business move. Today, that incentive has grown to five times the commodity price.

Bob's expertise goes way beyond wheat, for a farmer located in the Upper Great Plains he has an unlikely variety of successfully growing dryland produce. Throughout the episode, Bob goes into detail about how this production came to be and how regenerative organic practices allow him to grow things like watermelon and summer squash in Montana. Bob and John also discuss nutritional value of ancient grains, how the western diet has led to a jump in autoimmune disorders, and the concerning rise of glyphosate levels in our food. Bob also tells the story of how his company accidentally came upon creating cooking oil in the search to create a better diesel fuel. 

In our latest episode, John sits down with one of Australia's most recognized thought leaders in Regenerative Agriculture, Dr. Terry McCosker. Over the course of three decades, Terry has worked with about 10,000 Australian farmers—a staggering 10% of all farmland on the continent—coaching them through an agricultural approach that emphasizes both soil nutrition & pasture ecology.

Terry currently serves as the director of RCS, an Australian agriculture consulting firm, but his career started at an early age when he had the opportunity to work on an Australian cattle station. Driven by a fearless pursuit of excellence, Terry found that most of the problems that faced the cattle station, as well as other operations across the country, stemmed from an outdated reductionist view of farming. As he continued his research, which included traveling to farms across the globe, he saw firsthand the power of holistic practices and their effects on livestock. Terry began challenging the paradigms of conventional farming and what he observed were results like an increase in livestock reproduction and mortality rates.

Throughout the episode, John and Terry discuss the work of Stan Parsons and Allan Savory, the importance of cell grazing alongside other regenerative practices, the proper strategies farmers use to approach succession planning, and the fascinating future potential of carbon sequestration.

"A client of mine once said that he thought he was a livestock producer. And then he came to one of our programs and went away thinking that he was a grass producer. And then over time, as he's learned more and more, he now believes he's a soil manager. If you understand that you're a soil manager, the production and the economics of your farm will actually look after itself…to be truly regenerative, a farmer needs to understand that they are a part of the ecosystem, not apart from it." -Dr. Terry McCosker

In this Podcast Short, John Kempf announces the launch of FieldLark, an AI agronomist chatbot designed to democratize regenerative agriculture knowledge, which provides first-principles, thinking-based recommendations on how to solve agronomic challenges. FieldLark empowers farmers with accessible, expert-level insights to optimize crop and soil health.

In this episode, John covers:

• FieldLark's public launch as a specialized AI trained on agronomic and adjacent discipline data.
• The complexity of regenerative agronomy, emphasizing biology alongside chemistry.
• The integration of soil, sap, and microbiome analyses to predict and enhance crop health.
• The future development of an algorithmic engine for consistent, context-specific recommendations.
• The importance of combining human intuition with AI's data-processing strengths.
• The vision for technology to enhance, not replace, farmers' connection to the landscape.

Additional Resources
To sign up for FieldLark, please visit: https://fieldlark.ai/

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

In our latest episode of the Regenerative Agriculture Podcast, John interviews plant pathology veteran & agricultural visionary, Dr. Robert Linderman, discussing the benefits of mycorrhizal fungi and other bio-control agents that protect crops from soil-borne pathogens. 

After receiving his Ph.D. in Plant Pathology from U.C. Berkley in 1967, Robert would spend the next 40-plus years contributing pivotal research findings to the USDA and other agricultural organizations. During his time with the USDA, Robert was introduced to a colleague who was fascinated by the power of mycorrhizal fungi and their ability to keep pathogens at bay. Their conversation ignited Robert's pursuit to understand mycorrhizae symbiosis.

Throughout the episode, John and Robert discuss the benefits of building up antagonistic organisms in the soil to create a disease suppressive environment, allowing crops to thrive. In addition to other educated approaches to battling pathogens in your soil, Robert also takes listeners into a deep dive of the Ashburner System, telling the story of how one Australian avocado grower utilized a mycorrhizal fungi strategy—without even knowing it—to suppress phytophthora outbreak across his orchard. 

"Farms, whether they're seeding or transplanting or planting bulbs or whatever, need to treat that material where the infection is going to happen…to have something there waiting for the pathogen when it tries to get into the plant is the best chance. It's like immunizing a child for infections that might come. You build up some kind of resistance and the resistance is in a biological form." -Linderman

Robert and John also discuss the thoughtful inoculation of propagules, mycorrhizal fungi's effect on photosynthesis, concerns about single factor analysis found in agricultural research, and the true price of the "instant gratification" chemical fix.

In this episode of the Regenerative Agriculture Podcast, John interviews Loran Steinlage of Flolo Farms in Iowa. They discuss his experience in relay cropping, interseeding, cover crops, and controlled traffic farming. Loran grows grain crops for seed, has implemented youth programs on the farm, and has experimented with 60-inch corn. Listen for practical advice from a current grain farmer. 

Loran grew up planning to be a livestock farmer like his father, but was hit by a semi at the age of 14, causing him to change his plans. Today Loran grows corn, beans, wheat, rye, barley, buckwheat, sunflowers, and oats. Typically, they do relay cropping and interseeding, though this year they have not been able to do relay cropping due to a freeze in May of their cereal crops. 

In 2006 Loran began interseeding while his whole farm was corn on corn. Through interseeding, he found his way into cover crops and relay cropping. In the fall there are cereal crops such as winter wheat, rye, spring malt barley, or oats. Loran watches for stand quality, sometimes rolling over into corn if the stands aren't good enough. Otherwise, he sows soybeans at the normal time. Loran uses a 30-inch planter to give more room for the combine. In July winter wheat is harvested, then cereal rye, then malt barley. If there is a window with good weather, they add buckwheat and harvest it and the soybean crop together. 

Loran's method has long been to focus on seed quality for economic viability. Uniform emergence is the key that ensures all the heads mature at the same time for a high-quality harvest. Once cereal crops dry and re-wet, germination quality goes down, so they try to harvest the cereal as it dries. For a few years, they were making $7-$8 per bushel on malt barley. Food grade wheat can earn a $2-$3 premium, but with grain cleaners the value can be almost doubled. Loran receives a minimum of $10 for cereal rye seed. He utilizes controlled traffic and stays on the tramlines to avoid creating compaction or driving on the crop. 

Controlled traffic has great results in a field, but it requires more forethought and careful management to be successful so it has not been widely adopted. Even if there's a small yield loss, Loran avoids straying from the tramlines as much as possible. About 5 or 10 farmers participated in a tramline study with Bob Recker, with only Loran interseeding cover crops. The extra biomass in the tramlines was very valuable, and a 60-inch gap provided extremely high quality cover crops. Bob Recker did further testing of his "barcode plot" and saw that the 60-inch gap was significantly better than the 30-inch gap for cover crop production. This year, he plans to relay cereal crops into standing 60-inch corn, which in his experience has yielded equivalent or better to 30-inch corn. He attributes some of that to having a precise planter. He also questions if yield should be the ultimate goal. Loran believes growers around him who sacrifice some yield for grazing days can attain 2-3 months of grazing instead of one, which can substantially lower feed costs. 

Loran believes kids belong in agriculture today, and that it isn't happening enough. He believes in self-education and the importance of allowing kids to learn on-farm, rather than going off to college. In pursuit of this goal, Loran's started a 4-H program on his farm and increased field days. Having the children working with soil scientists can inspire them so they want to enter the field, and he's seen some success stories already. He thinks that more people need to step out of the way and let young people take their place. 

Loran sees the future of agriculture being focused on niche markets. He wants people to build an operation to fill voids in the market, rather than taking other people's ideas and trying to make them fit their operation. He would change government intervention in agriculture if he could. If inherent risk was returned to farming, he believes competition and innovation would return. He also wants people to learn more about practices used after the Dust Bowl and the Great Depression and to combine those with current knowledge to improve fertility and soil health. 

Resources:
The Steinlage Way
Loran Steinlage on Twitter
Growing Crops 365 Days a Year - Loran Steinlage
Corn Maverick: Cracking the Mystery of 60-Inch Rows
Jill Clapperton, Rhizoterra

In this episode of the Regenerative Agriculture Podcast, John interviews Professor Richard Mulvaney from the University of Illinois. Dr. Mulvaney is a prolific soil fertility scientist and researcher with many published papers relating to nitrogen and potassium uptake in crops. His work with Dr. Saeed Khan led to the development of the Illinois Soil Nitrogen Test (ISNT). John and Dr. Mulvaney discuss nitrogen uptake in crops, how soil should provide most of the needed nitrogen, and the fallacy that applying nitrogen builds soil organic matter. He also describes the "potassium paradox", how significant amounts of potassium are available from the soil, and the damaging cycle that is created when applying potash. 

Nitrogen Fertilization (00:00:53)
Dr. Mulvaney began working in soil fertility in the 1980s with a focus on minimizing nitrogen fertilizer loss to increase crop uptake, specifically in regard to the isotope N-15. In collaboration with Dr. Saeed Khan in the 1990s, he found evidence that in some cases, fertilizer nitrogen on corn has no statistically significant response. At the time, most soil scientists were operating with the assumption that the optimal amount of fertilizer nitrogen is found by multiplying 1.2 times an expected yield goal, then deducting nitrogen credits such as a previous legume. In a project in Illinois studying on-farm plots, around 33 of 75 studied sites showed no significant response to fertilizer nitrogen, a finding inconsistent with the 1.2 method. The unfertilized yields, or check yields, were very high and not significantly increased with an application of nitrogen. Thus, Dr. Mulvaney hypothesized that the 1.2 calculation might not be as reliable as previously thought. Dr. Khan and Dr. Mulvaney conducted research to determine the difference between plots used in that study that were responsive and those that were unresponsive to fertilizer nitrogen applications. His wife noted that while soil scientists understand how carbon in plants is heterogeneous and decomposes at different rates, they assume that nitrogen is all the same. Examining the differences within nitrogen forms made clear that the plants at the non-responsive sites had sufficient levels of nitrogen available from the soil and so did not need nitrogen fertilizer applications. Using diffusion on the soil samples from the same study, they found that non-responsive soils were consistently testing higher in amino sugar nitrogen. 

The prevailing thought at the time was that fertilizer is the primary source of nitrogen for crop uptake, especially for corn. However, Mulvaney's and Khan's data shows that at least two thirds of the nitrogen in the crop at harvest is supplied from the soils, rather than from applied fertilizer nitrogen. In soils with higher amounts of amino sugar nitrogen, applications of fertilizer nitrogen are a waste of money because most or all of the nitrogen is supplied by the soil. It follows that measured soil nitrogen is only correlated with crop response to applied nitrogen when soil tests measure amino sugar nitrogen. 

The 1.2 method was developed from research trials on static plots. These corn plots received the same fertilizer treatments each year. On the unfertilized plots, corn used the nutrients from the soil with no nitrogen fertilizer added. Microbes will also use nitrogen from the soil to break down crop residues, depleting the following crop of nitrogen and depressing yields. The depletion of nitrogen resulting in depressed yields on the unfertilized plots makes the fertilizer effect appear more dramatic in comparison. Because the 1.2 method is based on static plots, it and its related assumptions are invalid when applied to farmer fields. Similarly, the assumption that one-third of the nitrogen will come from the soil is incorrect. In reality, two-thirds of the nitrogen is supplied from soils and only one third or less comes from fertilizer. These misconceptions have misled growers on the importance of nitrogen applications. 

Because soil is the primary source of nitrogen for crop uptake, soils should be tested to determine how much nitrogen fertilizer should be applied. Dr. Mulvaney and Dr. Khan developed the Illinois Soil Nitrogen Test (ISNT) to estimate the amino sugar fraction for variable-rate nitrogen application recommendations. A former student of Dr. Mulvaney runs the lab at Cropsmith, where the Illinois Soil Nitrogen Test is available. 

Expansion on Amino Sugar Nitrogen (00:24:15)
Amino sugars are an organic form of nitrogen produced by microbial activity. They occur in microbial cell walls, spores, and in chitin. The bacterial cell walls are more decomposable. Nitrogen shows up in asparagine and glutamine, essential amino acids, which contain one nitrogen atom each in the amino group and the amide group, which is prone to break down. It is estimated that 5-10% of soil organic nitrogen is in the form of amino sugars, but Dr. Mulvaney believes it is likely higher. Amino sugar nitrogen, more specifically referred to as alkali hydrolyzable nitrogen, will also increase with more soil biological activity. Manured soils have higher levels of it, and thus have a diminished need for synthetic fertilizer nitrogen. Although his lab has not studied cover crops directly, he believes having active plants in the soil will increase microbial activity and thus the amino sugar nitrogen.  

The Morrow Plots, located at the University of Illinois and established in 1876, are the oldest continuous research plots in North America. They are static plots with three rotations, continuous corn, corn-soybean, and corn-oats-hay. In his research, Dr. Khan noticed that the continuous corn plots were not as healthy and had lower yields than the corn-oats-hay plots, even though the continuous corn plots received significantly more nitrogen fertilizer. The results of the Illinois Soil Nitrogen Test were lower on the continuous corn plots, which shows that synthetic nitrogen fertilizer is not necessarily building soil organic matter. Research comparing samples from 1955, 1967, and 2005 showed decreases in organic matter on the fertilized subplots. Dr. Mulvaney explains that the fertilizer actually "burned" organic matter. Carbon metabolism requires nitrogen, in a ratio of about 7 carbon to 1 nitrogen, so microbes can only access carbon from crop residue with nitrogen availability. When the microbes have too much nitrogen, they burn off the excess carbon as carbon dioxide rather than building soil organic matter. Additionally, conventional fertilizers have an oxidizing effect on soil microbial communities and stimulate respiration, which releases carbon from the soil as carbon dioxide. 

Dr. Mulvaney notes that William Albrecht published a paper in 1938 in a handbook from the USDA where he stated that adequate nitrogen is needed to build organic matter. Later that year, Albrecht published an article in the Soil Science Society of America Proceedings based on results which showed that unfertilized plots had gained organic matter while fertilized plots had lost it. Albrecht never again said adequate nitrogen is needed. 

Potassium Paradox (0:43:40)
Dr. Mulvaney worked with Dr. Khan, an expert on potassium, to write papers on the potassium paradox. He was doing soil testing for potassium on the South Farm at Illinois, testing from the surface plow layer to about seven inches into the soil. The unfertilized plots increased in their average potassium levels, leading to the realization that the soil was releasing potassium. There are about 40,000 pounds of potassium per acre in just the top six inches of many Midwestern soils. A review of numerous potassium studies showed that there is no significant yield increase from potash fertilization. Clay layers, mostly found in the subsoil rather than the plow layer, hold significant quantities of potassium. When the plant roots reach those lower levels, they find large quantities of potassium that they extract with the biological functions of the root system. 

Because potassium is a major plant cation, there are high levels of soluble potassium carbonate in crop residue. Salts are leached from crop residue during rainfall, resulting in most of the potassium in a corn crop returning to the soil and making potassium fertilization unnecessary. Potassium is also fixed in the clay due to its size, leading to high potassium retention in clay layers with sufficient moisture. These factors lead to sufficient potassium levels in the soil. A German researcher, Mengel, performed a greenhouse study where he removed the clay fraction from soil, and potassium uptake was still high. This led to the idea that potassium in the clay layers is unavailable to plants, but Dr. Mulvaney disagrees. He finds that the plants are able to make the potassium available by producing acids. Soil testers measure the exchangeable potassium in soils, and do not measure the non-exchangeable and mineral potassium. This means that they will underestimate the available potassium and will recommend potassium fertilization, though it may not be necessary. As further evidence that potassium fertilization is typically unnecessary, Dr. Mulvaney refers to Cyril Hopkins, a 20th-century soil scientist, who claimed that potassium is not a necessary input because the soil already contains enough. 

The potassium paradox is based on the fact that applying potash to soil makes potassium less available by collapsing the clay layers. To demonstrate, Dr. Mulvaney tells a story about a fertilizer dealer who applied potassium to soils that had tested low for potassium. When they re-tested the field, the potassium levels were even lower. They assumed they had the wrong field, re-applied potassium on the same field, and again found lower potassium levels afterward. Thus, applying potassium can worsen potassium deficiency. 

Dr. Mulvaney advises growers to use the Illinois Soil Nitrogen Test or another similar test. It doesn't test for nitrate, which is dynamic, but tests a more stable nitrogen, specifically amino sugar nitrogen. This allows many growers to save money on purchased inputs such as nitrogen fertilizer if they do not need it.  Rather than soil testing for potassium, he recommends strip trials comparing strips with no potassium fertilizer and strips with a small amount, as large amounts are never necessary. He also recommends using sulfate for potassium fertilizer, rather than Muriate of Potash, because the chloride content in Muriate of Potash diminishes nitrate uptake. 

Resources:

• Richard Mulvaney, Professor
• Cropsmith
• Solvita, invented by Will Brinton
• Solvita SLAN Test
• Rhizophagy Cycle: An Oxidative Process in Plants for Nutrient Extraction from Symbiotic Microbes by James White
• Ken Ferrie, Farm Journal
• Dr. Mulvaney's Research
• The Potassium Paradox, Mulvaney and Khan
• Morrow Plots
• William Albrecht, "Loss of Soil Organic Matter and Its Restoration" 1938
• William Albrecht, Variable Levels of Biological Activity in Sanborn Field after Fifty Years of Treatment
• Mengel paper, 1994
• Bulletin No. 182 "Potassium From the Soil" Cyril Hopkins