Videos

In this clip from the EFA podcast, Ewan Campbell and Stephen Brunton break down the real numbers behind soil carbon, organic matter, and nutrient availability — and reveal why most farmers are leaving tens of thousands of dollars of fertility trapped underground.

Ewan explains why a 1% increase in organic matter equals 15 tonnes of soil, hundreds of kilos of nitrogen, and huge boosts in phosphorus and sulphur — all without buying synthetic inputs. He also challenges mainstream ideas about root-based carbon storage, arguing that cyanobacteria, not plant roots, are the real engine behind NZ’s soil carbon cycle.

Listen to the full episode on Spotify
Or watch the full episode here: https://youtu.be/gGbyYD4rC5I

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Weeds: What They’re Really Telling You About Your Soil

The EcoFarm Aotearoa Podcast (Ep. 7)

When weeds take over, most farmers reach for the spray. But what if every thistle, buttercup, or gorse plant is actually trying to tell you something? In this episode, Ewan Campbell and Stephen Brunton dig into the surprising truth about weeds, they’re not enemies of productivity, but messengers of the soil’s condition.

Through real on-farm stories and decades of regenerative experience, Ewan explains how weeds reveal underlying mineral imbalances, poor aeration, and biological breakdowns and how the right soil management can make them disappear without a single drop of poison. From “fixing the soil, not the weed” to using livestock as living tools for regeneration, this conversation turns conventional weed control on its head.

We discuss:
- How weeds reveal soil health, not failure
- Why chemical spraying makes soil problems worse
- The role of biology, minerals, and grazing in weed control
- Real examples of gorse and blackberry transforming into rich pasture
- How nature self-corrects when given the right conditions
- The philosophy behind constructive money vs. destructive money in farming

Full of practical wisdom, humour, and down-to-earth insight, this episode challenges the old mindset of “kill and control” showing instead how healing the soil brings everything, even weeds, back into balance.

With humour, honesty, and decades of hands-on experience, Ewan and Stephen explore how solving facial eczema starts with healthy soils, balanced biology, and a shift in thinking.

Hosted by: Stephen Brunton & Ewan Campbell
Powered by: EcoFarm Aotearoa – ⁠www.efa.nz⁠

Subscribe for weekly conversations exploring soil health, biology, and regenerative farming solutions that are transforming the way we farm in New Zealand.

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Soil Health: The Real Cure for Facial Eczema

The EcoFarm Aotearoa Podcast (Ep. 6)

When a facial eczema outbreak tore through Ewan Campbell’s dairy herd in the late 1980s, it became a make-or-break moment on the farm. Cows were peeling, milk production was crashing, and the conventional advice—more zinc, more maize, more fungicides—wasn’t working. Then one old farmer offered the simplest, most game-changing advice of all: “Just put some lime on.”

In this episode, Ewan and Stephen unpack how a crisis in animal health revealed a deeper truth about soil. What started as a desperate search for a cure led to a breakthrough understanding: that facial eczema isn’t just a pasture disease—it’s a soil problem rooted in acidity, imbalance, and over-reliance on chemicals.

We discuss:
• The shocking reality of facial eczema outbreaks and why prevention starts underground
• How one “lime experiment” dropped spore counts from 300,000 to under 20,000 in days
• The hidden role of soil pH, nitrates, and fungal balance in livestock disease
• Why quick fixes like zinc and fungicides only mask the real issue
• The true cost of ignoring soil biology — in money, animal welfare, and mental strain
• Why farmers need to think critically, ask questions, and reclaim independence from “expert” advice

With humour, honesty, and decades of hands-on experience, Ewan and Stephen explore how solving facial eczema starts with healthy soils, balanced biology, and a shift in thinking.

Hosted by: Stephen Brunton & Ewan Campbell
Powered by: EcoFarm Aotearoa – ⁠www.efa.nz⁠

Subscribe for weekly conversations exploring soil health, biology, and regenerative farming solutions that are transforming the way we farm in New Zealand.

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