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EcoFarm Aotearoa

EcoFarm Aotearoa

By: Ewan Campbell with co-host Stephen Brunton
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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.nzEwan Campbell with co-host Stephen Brunton Biological Sciences Science
Episodes
  • How Farmers Are Losing $21,000/ha Without Realising It
    Apr 15 2026

    In this episode, Stephen and Ewan unpack the growing tension between water quality, farm profitability, and the long-standing reliance on synthetic inputs. What starts as a conversation about environmental pressure quickly reveals a deeper issue, farm systems that are quietly depleting their own soil capital over time.

    Through real on-farm numbers and practical examples, Ewan breaks down how decades of nitrogen use have led to a steady loss of organic carbon, reducing the soil’s natural ability to hold nutrients and water. The result? Farmers aren’t just buying fertiliser, they’re replacing what their soil used to provide for free.

    Looking through the EFA lens, the discussion shifts toward rebuilding soil function through biology, carbon, and mineral balance. By increasing organic matter and restoring natural nutrient cycles, farmers can reduce input costs, improve production, and take back control of their systems, while also addressing environmental concerns like water quality.

    This episode highlights a powerful opportunity: by changing the system, farmers can move from constantly spending on inputs to actually rebuilding long-term value in their soil.


    We discuss:• The link between water quality issues and farm profitability• How decades of nitrogen use have depleted soil carbon• The hidden financial loss of declining soil organic matter• Why synthetic fertiliser replaces, rather than builds, fertility• The impact of low dry matter and “watery” feed on production


    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

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    30 mins
  • Chapter 27: Environmental Issues | An EcoFarmers Discovery Audiobook Companion Podcast
    Apr 10 2026

    An EcoFarmer’s Discovery Chapter 27: Environmental Issues

    Welcome to An EcoFarmer’s Discovery: The Companion Podcast, where every Friday we dive deep into one chapter of Ewan Campbell’s journey.


    In this episode, Stephen Brunton and Ewan unpack Chapter 27: Environmental Issues, bringing the series to a powerful and challenging close. The conversation centres around one of the biggest topics in modern agriculture, water quality, and explores how soil health, carbon, and biology play a critical role in filtering nutrients, reducing runoff, and restoring natural balance.


    Ewan shares insights into how increasing soil carbon can lock up excess nitrogen, preventing it from entering waterways, while also highlighting the importance of silica and microbial life in maintaining clean, functional water systems. The discussion challenges common narratives around farming’s impact on the environment, suggesting that many of today’s issues are not simply the result of farming itself, but of systems that lack the biological and mineral balance needed to function properly.


    The episode also dives into the broader system, from outdated scientific paradigms and industry structures, to the role of policy, education, and accountability in shaping outcomes. Through practical examples and on-farm experience, Ewan explains how improving soil health can directly improve water quality, animal performance, and public health, all while reducing reliance on external inputs.


    At its core, this chapter ties everything together, reinforcing the idea that true environmental solutions don’t come from regulation alone, but from understanding and working with the natural systems already in place. It’s a confronting but empowering conversation, pointing toward a future where farms can be both highly productive and environmentally regenerative.


    We discuss:• How soil carbon helps reduce nitrate leaching and improve water quality• The role of biology and silica in natural water filtration systems• Why many water quality issues stem from imbalanced soil systems• The connection between soil health, productivity, and public health• How outdated thinking and systems can limit real progress• Why working with nature offers long-term solutions over regulation


    Powered by: EcoFarm Aotearoa – ⁠⁠⁠www.efa.nz⁠⁠⁠Link to our free ebook!https://www.ecofarmaotearoa.nz/download-our-ebook/Listen to An EcoFarmer’s Discovery:⁠ https://open.spotify.com/show/3wIgUUghlsKIje76E5tjBA?si=b4aa009579a34ac1⁠

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    34 mins
  • Chapter 26: The Last Chapter? | An EcoFarmers Discovery Audiobook Companion Podcast
    Apr 10 2026

    An EcoFarmer’s Discovery Chapter 26: The Last Chapter?

    Welcome to An EcoFarmer’s Discovery: The Companion Podcast, where every Friday we dive deep into one chapter of Ewan Campbell’s journey.


    In this episode, Stephen Brunton and Ewan unpack Chapter 26: The Last Chapter?, stepping into one of the most challenging and thought-provoking ideas in the entire series. The conversation explores the concept of unseen influences on the farm, from vibrational residues left behind by past chemical use to the role of electromagnetic frequencies in shaping soil, plant, animal, and even human performance.


    Ewan shares powerful on-farm experiences that challenge conventional thinking, suggesting that soil may hold more than just nutrients, it may also store memory. From long-banned chemicals like DDT still influencing outcomes decades later, to the impact of electrical systems, power lines, and modern technology, the discussion reveals how these hidden factors can affect productivity, animal behaviour, and overall farm health in ways that are often overlooked.


    The episode also dives into practical approaches for addressing these challenges, including the role of fungal biology in “cleaning” soil systems, and how certain natural materials can help mitigate negative frequencies. Through a mix of observation, experimentation, and open-minded thinking, Ewan explains how farmers can begin to restore balance and regain control, even in environments impacted by long-term chemical and energy inputs.

    We discuss:• What “vibrational residues” are and how they may impact farms• How soil can hold the memory of past chemical use• The long-term effects of inputs like DDT beyond standard testing• The influence of electromagnetic frequencies on living systems• How fungal biology can help restore and rebalance soil• Practical ways to reduce unseen stressors and improve resilience


    Hosted by: Stephen Brunton & Ewan Campbell


    Powered by: EcoFarm Aotearoa – ⁠⁠⁠www.efa.nz⁠⁠⁠Link to our free ebook!https://www.ecofarmaotearoa.nz/download-our-ebook/Listen to An EcoFarmer’s Discovery:⁠ https://open.spotify.com/show/3wIgUUghlsKIje76E5tjBA?si=b4aa009579a34ac1⁠

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    51 mins
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