From paddock to podcast, EcoFarm Aotearoa showcases Ewan Campbell, a respected name in NZ farming, known for turning good science into better practice. With co-host Stephen Brunton, Ewan unpacks his audiobook and the big issues: nitrate and water quality, soil biology, mineral balance, genetics, pasture growth, animal health, and profitability. Real stories, clear takeaways—ready for the ute, cowshed, or tractor. Notes & links: efa.nz
EcoFarm Aotearoa
Claim This Podcastby Ewan Campbell with co-host Stephen Brunton
65 episodes
Updated Daily
Accepts GuestsHas SponsorsLocation 🇳🇿
Podcast Overview
From paddock to podcast, EcoFarm Aotearoa showcases Ewan Campbell, a respected name in NZ farming, known for turning good science into better practice. With co-host Stephen Brunton, Ewan unpacks his audiobook and the big issues: nitrate and water quality, soil biology, mineral balance, genetics, pasture growth, animal health, and profitability. Real stories, clear takeaways—ready for the ute, cowshed, or tractor. Notes & links: efa.nz
Language
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Publishing Since
10/1/2025
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Recent Episodes
June 26, 2026
Can Mining Improve Agriculture?
<p>In this episode, Stephen and Ewan are joined by Jimmy, a lifelong West Coast coal mining expert, to explore the surprising connections between geology, mining, soil health, and modern agriculture.</p><p><br></p><p>What begins as a conversation about coal quickly expands into the history of New Zealand's geology, the science behind different coal types, mine rehabilitation, and how mining by-products are helping improve soil function and farm productivity.</p><p><br></p><p>Drawing on decades of experience in the mining industry, Jimmy shares insights into how coal is formed, processed, and used far beyond energy production, while also challenging common perceptions around environmental impact, land restoration, and the future of New Zealand's mineral resources.</p><p><br></p><p>Through the EFA lens, this episode examines how overlooked natural resources, practical problem-solving, and independent thinking can create opportunities for both farming and industry.</p><p><br></p><p><strong>We discuss:</strong><br>• How coal is formed and why different coal types have different uses<br>• Mine rehabilitation and restoring land back to productive use<br>• The surprising role of coal by-products in improving soil health<br>• Clean coal, energy efficiency, and common misconceptions about mining<br>• Why soluble silica and coal humates are becoming valuable farm inputs<br>• The future of New Zealand's mining industry and primary sector<br>• What farming and mining can learn from each other</p><p><br></p><p>Purchase Our E-Book!<a href="https://www.ecofarmaotearoa.nz/product/6-crucial-links-for-boosting-soil-health-and-farm-profit/" target="_blank" rel="noopener noreferer">https://www.ecofarmaotearoa.nz/product/6-crucial-links-for-boosting-soil-health-and-farm-profit/</a>Listen To An EcoFarmer’s Discovery:<a href="https://open.spotify.com/show/3wIgUUghlsKIje76E5tjBA?si=b4aa009579a34ac1" target="_blank" rel="noopener noreferer">https://open.spotify.com/show/3wIgUUghlsKIje76E5tjBA?si=b4aa009579a34ac1</a></p>
June 21, 2026
The Farming Discovery That Turned Conventional Agriculture Upside Down
<p>In this episode, Stephen and Ewan are joined by Robin Claire, host of Cultivated Audio, for a fascinating conversation exploring soil health, regenerative agriculture, and the hidden forces shaping the future of farming.</p><p><br></p><p>What begins as a discussion around farming systems and mineral balancing expands into a deeper exploration of soil biology, electrical conductivity, microbial life, livestock health, and the complex relationships connecting soil, plants, animals, and people.</p><p><br></p><p>Drawing on decades of hands-on farming experience, Ewan shares the observations and discoveries that led him to investigate the electrical properties of soil and how minerals, biology, and natural systems work together to drive productivity, resilience, and ecosystem health.</p><p><br></p><p>Through the EFA lens, this episode challenges conventional agricultural thinking and highlights the importance of observation, curiosity, and farmer-led innovation in building healthier farms and food systems.</p><p><br></p><p><strong>We discuss:</strong><br>• The hidden electrical activity within healthy soils<br>• How minerals influence plant, animal, and human health<br>• The role of cyanobacteria, microbes, and biology in regenerative farming<br>• Why observation and on-farm experimentation matter<br>• Building resilient farming systems that work with nature</p><p><br></p><p><strong>Guest:</strong><br>Robin Claire<br>Host of Cultivated Audio</p><p><br></p><p><strong>Website:</strong><br>https://cultivatedaudio.com/</p><p><br></p><p><strong>Listen to Cultivated Audio:</strong><br>https://open.spotify.com/show/4ydCU8Rh44ZcSXz0tfZgOz?si=ada90fb16e5a4cd0</p><p><br></p><p><strong>Purchase Our E-Book! </strong>https://www.ecofarmaotearoa.nz/product/6-crucial-links-for-boosting-soil-health-and-farm-profit/</p><p><br></p><p><strong>Listen To An EcoFarmer’s Discovery</strong></p><p>:https://open.spotify.com/show/3wIgUUghlsKIje76E5tjBA?si=b4aa009579a34ac1</p>
June 21, 2026
The $3 Billion Fertiliser Plant Nobody Needed
<p>In this episode, Stephen and Ewan unpack the controversy surrounding a proposed $3 billion lignite-to-fertiliser plant in Southland, New Zealand, and ask a bigger question: why are we investing billions into synthetic nitrogen production when healthy soils already produce nitrogen naturally? What begins as a discussion around fertiliser security and global supply chains quickly becomes a deep dive into soil biology, carbon, trace minerals, and the hidden systems that drive productive farming.</p><p><br></p><p>Through the EFA lens, the conversation explores how rebuilding soil biology through trace minerals, carbon growth, and biological function can reduce fertiliser dependence while improving profitability, animal health, environmental outcomes, and food quality. The episode challenges modern agriculture’s reliance on synthetic inputs and argues that many farmers may already have the solution beneath their feet.</p><p><br></p><p><strong>We discuss:</strong>• Why healthy soil biology naturally fixes nitrogen• The difference between synthetic and biologically fixed nitrogen• How trace minerals influence productivity and animal health• Why increasing soil carbon improves profitability and resilience• How farmers can reduce dependency through better soil management</p><p><br></p><p>Our FREE E-Book!https://www.ecofarmaotearoa.nz/download-our-ebook/Listen To An EcoFarmer’s Discovery:https://open.spotify.com/show/3wIgUUghlsKIje76E5tjBA?si=b4aa009579a34ac1</p>
65 total episodes available
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- What is EcoFarm Aotearoa?
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This podcast updates daily.
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