In Episode 22 of the 4Farmers Podcast, Bill Crabtree sits down with Professor Wallace Cowling, one of Western Australia’s most respected plant breeders, to explore the science and history behind lupins, canola and modern crop breeding.

Wallace shares how his career took him from Melbourne and the United States to the WA Department of Agriculture, where he worked alongside renowned agricultural scientist John Gladstones. He reflects on the discoveries that helped domesticate lupins, the changing role of legumes in farming systems and the long-term breeding programs that brought better-adapted canola varieties to the WA wheatbelt.

The conversation also tackles common misconceptions about hybrid and genetically modified crops, explains how herbicide-tolerant canola transformed weed control and crop rotations, and explores the importance of maintaining genetic diversity for future farming conditions.

Drawing on a lifetime of research, Professor Wallace Cowling leaves young agricultural scientists with one enduring piece of advice: talk to farmers, understand their problems and ensure research delivers practical value in the paddock.

Rob Delane has spent much of his career at the heart of Western Australian agriculture, from early research in the Ord River and Geraldton to senior leadership in the Department of Agriculture and major roles in Australian biosecurity.

In this episode, Bill Crabtree and Rob revisit the evolution of WA farming, including the early days of lupin and grain research, deep ripping, no-till adoption, collaboration between farmers, researchers and agribusiness, and the sometimes heated debates that came with agricultural change.

Rob also reflects on leading the Department of Agriculture through major restructuring, the development of Australia's biosecurity systems, and why he believes the future of agricultural R&D may require greater direct leadership from growers themselves.

A fascinating conversation about the people, disagreements, decisions and innovations that helped shape modern Western Australian agriculture.

In EP 20 of Bill Crabtree’s conversation with Geoff Fosbery, they explore the challenges, weaknesses and opportunities shaping modern Western Australian agriculture.

Drawing on more than four decades of experience, Geoff explains why diversity is essential to building resilient farming systems and why repeatedly relying on the same crops, herbicides and management practices will eventually create problems.

The conversation covers crop rotation, herbicide resistance, ryegrass competition, early sowing, soil acidity, lime and gypsum, no-till farming, regenerative agriculture and the emerging potential of lentils in Western Australia.

Geoff also shares practical lessons from his career as a technical farm consultant, including why getting a crop established ahead of the weeds can sometimes be more valuable than simply increasing seeding rates.

It is a wide-ranging conversation filled with practical agronomy insights, farming history and important lessons for the future of Australian agriculture.

Bill sits down with respected WA agronomist Geoff Fosbery to look back on a career shaped by curiosity, experimentation, and some of the biggest changes in Western Australian agriculture.

Geoff shares how growing up around Corrigin sparked his passion for farming, before taking us through his early work with the Department of Agriculture in Merredin and Three Springs. A major part of the conversation explores his pioneering work with gypsum, soil acidity, nutrient limitations, and the importance of understanding how one change in the farming system can affect everything else.

They also discuss early sowing, wheat varieties, herbicide resistance, no-till farming, and the people and research that helped reshape agriculture across the WA Wheatbelt.

This is Part 1 of Bill’s conversation with Geoff Fosbery, packed with agricultural history, practical agronomy, and lessons that remain highly relevant to farming today.

What happens when agriculture meets artificial intelligence?

In this episode, Bill Crabtree interviews rising weed science researcher Guy Coleman about the future of precision agriculture and how AI, robotics, computer vision, and autonomous machines are changing the battle against weeds.

The discussion covers laser weeders, smart sprayers, herbicide resistance, harvest weed seed control, and the growing role of machine learning in farming systems worldwide.

A fascinating conversation for farmers, agronomists, ag-tech enthusiasts, and anyone curious about where agriculture is heading next.

In this 17th episode, Bill we sat down with David Seagreen, a chemist, innovator, and one of the minds behind some of the most interesting developments in modern agriculture.

From growing up in a farming community in South Africa to building a fertilizer company in Western Australia, David shares the journey that shaped his thinking around soil, water, and plant nutrition.

We dive into:

• The real problem with water use in farming
• Why traditional approaches don’t always work
• The science behind products like Aquifer and CalBud
• How nanotechnology and surface area can impact plant growth
• And how small changes in application can lead to major differences in yield

This isn’t theory, it’s decades of hands-on experimentation, problem-solving, and pushing boundaries in agriculture.

If you’re interested in improving water efficiency, understanding soil behavior, or just thinking differently about farming inputs, this episode is worth your time.

Farming isn’t just about crops, it’s about constant learning.

In this episode, we sit down with Jeremy Lemon to unpack his journey from South Australia to Western Australia, and how he spent over two decades helping shape farming systems in Esperance.

From early canola trials to soil challenges and major industry shifts, this is a grounded, experience-driven conversation about agriculture at its core.

In this 15th episode, we sit down with Kevin Young, one of Western Australia’s most respected agricultural minds, to unpack decades of innovation, failure, and breakthrough in crop science.

From his early days in barley agronomy to pioneering high-yield systems, Kevin shares how farming evolved from 2-ton crops to 6–8 ton potential, and what made that shift possible.

We dive deep into:

• The rise of no-till farming
• The science behind yield improvements
• Lessons from decades in plant breeding
• The reality of failure in agriculture
• And the development of Mohawk, a winter wheat variety changing how farmers think about early sowing

This episode is both technical and deeply human, a story of persistence, curiosity, and long-term impact on Australian agriculture.

Whether you’re a farmer, agronomist, or just curious about how food systems evolve, this is one conversation worth listening to.