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PODCAST

The 4Farmers Podcast

Join Bill Crabtree known worldwide as No-Till Bill, a global keynote speaker and leading authority on no-till farming and Cathy McKenna, seasoned sales strategist, as they unpack the strategies, science, and stories behind providing Australian farmers with low-cost, high-quality agricultural chemicals. Both Bill and Cathy are former large-scale farmers who understand firsthand the constraints, challenges, and stresses of dryland farming. With Bachelor degrees in Agricultural Science and Bill also

science earth sciences

All Episodes

57:01

12. David Lindsay: Why Scientists Still Fail at...

The 4Farmers Podcast ·

2025/12/23

Professor David Lindsay has spent a lifetime at the forefront of Australian agricultural science but this conversation goes far beyond the lab.In this episode, Bill sits down with David to explore a career that shaped modern understanding of animal reproduction, fertility, nutrition, and farmer–scientist collaboration. From early breakthroughs in sheep fertility to the role of lupins, hormones, and gut biology, David reflects on the discoveries that genuinely changed farming systems across Western

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52:42

11. GMOs, Glyphosate & Biotechnology Explained -...

The 4Farmers Podcast ·

2025/12/16

In this episode, Bill sits down with Professor Kevin Folta, molecular biologist at the University of Florida and host of the Talking Biotech podcast, to unpack the science, controversy, and real-world impact of genetic engineering in modern agriculture.From the early days of producing insulin in bacteria to the development of Bt crops and genetically engineered oilseeds, Professor Folta shares how biotechnology was built to solve practical farming problems and why resistance to these tools has

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42:58

10. The Caluka Experiment: Genetics, Pastures and the...

The 4Farmers Podcast ·

2025/12/09

Agronomist and innovator Wayne Smith returns for one of the most candid conversations ever recorded on this podcast. Wayne opens up about the rise and collapse of Caluka Farms an ambitious livestock project that pushed the limits of pasture productivity, animal genetics and high-rainfall farming in Western Australia.Wayne also shares powerful insights on: • Trace-element deficiencies across Africa and Australia • Why many high-rainfall pastures underperform and how to fix them • How corporates get

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66:25

9. The Real Reason Australia’s Yields Are So High

The 4Farmers Podcast ·

2025/12/01

Agronomist Wayne Smith has been behind some of the biggest shifts in Australian broadacre farming. In this episode, he joins Bill to unpack how no-till, better rotations, improved nutrition and smarter agronomy lifted WA cropping from two-tonne wheat to the high-yield systems farmers run today.Wayne shares the breakthroughs that changed everything from zinc, copper and molybdenum diagnostics to the early disc-seeder revolution, stubble retention, deep roots and the move toward earlier sowing. He

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64:08

8. The Untold Farming Revolution with Dr David Barron

The 4Farmers Podcast ·

2025/11/24

Dr David Barron has spent a lifetime at the forefront of agricultural science, from early herbicide trials in the jungles of Sabah to leading Western Australia’s research into weed management, chemistry, and crop tolerance. In this episode, Bill dives deep with David into the real science behind herbicides, the myths that refuse to die, and the innovations that transformed broadacre farming.David shares candid stories from his decades in the field, including the rise of selective herbicides, the

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58:52

7. Dr Bill Bowden: The Truth About Soil Fertility

The 4Farmers Podcast ·

2025/11/17

Dr Bill Bowden has spent more than five decades shaping the way Western Australia understands soil, fertiliser strategy and plant nutrition. In this episode, he joins host Bill Crabtree for a candid conversation about the science, history and hard-won lessons behind modern cropping systems.From the early days of superphosphate to the complexities of trace elements, root development, pH buffering and nutrient availability, Bill breaks down how WA’s most infertile soils became productive and what

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43:58

6. ACID SOIL IS KILLING YOUR CROPS: The Science...

The 4Farmers Podcast ·

2025/10/27

Dr. Steve Carr joins Bill "No-Till Bill" Crabtree for a deep dive into soil acidity, the silent crop killer affecting thousands of Western Australian farms. With decades of research experience from UWA and hands-on fieldwork in the Eastern Wheatbelt, Dr. Carr breaks down the complex science behind why WA's ancient soils are naturally acidic and how modern agriculture accelerates the problem.Dr. Carr's expertise transforms complex soil chemistry into actionable knowledge that can save your crops and

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44:54

5. They Want to Ban Sheep Farming in Australia?!

The 4Farmers Podcast ·

2025/10/14

From decades in rural broadcasting to witnessing the rise and fall of major agricultural industries, former ABC journalist Owen Grieve joins Bill “No-Till Bill” Crabtree for one of the most honest and controversial conversations yet.Together, they unpack the live sheep export ban, government policies that have shaped (and shaken) rural Australia, and the media’s role in shaping public perception of farmers. It’s a deep, unfiltered look at what’s really happening to Australia’s sheep industry and

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49:34

4. How No-Till Farming Transformed the WA Wheatbelt

The 4Farmers Podcast ·

2025/09/29

From battling wind erosion to leading the no-till revolution in Western Australia, Bill “No-Till Bill” Crabtree sits down with Rick Madden and Owen Grieve to reflect on the innovations, challenges, and breakthroughs that reshaped farming across the WA Wheatbelt.Together, they share raw, funny, and insightful stories about the shift from conventional tillage to direct drilling, the machinery and chemical innovations that made it possible, and the farmer-led movement that spread from WA to the

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54:21

3. The No-Till Revolution: How WA Farmers Transformed...

The 4Farmers Podcast ·

2025/09/15

From dust storms and soil erosion in Esperance to the birth of no-till farming in Western Australia, this episode of the 4Farmers Podcast captures a turning point in Australian agriculture.Host Bill Crabtree (“No-Till Bill”) is joined by Rick Madden, one of WA’s early champions of direct drilling and minimum tillage, and Owen Grieve, long-time ABC Rural journalist. Together, they share the stories, challenges, and breakthroughs that reshaped farming across the Wheatbelt. In this conversation,

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50:07

2. From Farm Kid to “No-Till Bill”: The Journey of...

The 4Farmers Podcast ·

2025/09/01

In this episode, Cathy McKenna interviews Bill Crabtree - better known as No-Till Bill about his remarkable journey from growing up on a family farm in WA’s Wheatbelt to becoming a global leader in no-till agriculture. Bill shares personal stories of life as one of ten children, early lessons on tractors and soil, and the challenges of studying and working in agriculture at a time of massive change.Together, Bill and Cathy explore the science of soil health, the revolution of no-tillage farming,

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49:19

1. From Droughts to No-Till: Bill Crabtree & Cathy...

The 4Farmers Podcast ·

2025/08/15

In today’s episode, from droughts and dust storms to pioneering no-till farming, Bill Crabtree and Cathy McKenna share raw, funny, and inspiring stories from decades in Australian agriculture. Hear their journey from university mates to industry leaders, tackling the science, challenges, and triumphs of life on the land. Perfect for farmers, ag-industry professionals, and anyone interested in the individuals shaping modern farming.

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