March 27, 2026

Fuel, Fertiliser, and Fear Down Under - ep314

53 minutes

Are fears of fuel shortages in Australia overblown—or are we underestimating the risks? Gene Tunny is joined by Dr John Humphreys and farmer Peter Rothwell to explore how rising diesel prices, fertiliser shortages, and supply chain stress could ripple through the economy. From supermarket prices to farm viability, this episode breaks down how a global energy shock could hit households and businesses—and whether markets can cope.

Gene would love to hear your thoughts on this episode. You can email him via [email protected].

About the Guests

Dr John Humphreys is Chief Economist at the Australian Taxpayers’ Alliance and an experienced economist with a background spanning academia, government, consulting and think tanks, including roles at the Australian Treasury, the Centre for International Economics and the Centre for Independent Studies. He holds a PhD in economics from the University of Queensland, where he has lectured in advanced microeconomics, and has also taught in Cambodia, where he founded an education charity and research institute. John is the founder of the Australian Libertarian Society and the Liberal Democrats (Libertarian Party), and has published widely on tax, welfare, public finance and international trade. He was awarded a knighthood in the Cambodian Royal Order of Moniseraphon for his contributions to education.

Peter Rothwell is a farmer and former Liberal Democrats candidate based in regional New South Wales. He has contested the federal seat of Parkes, covering much of western NSW including Dubbo and surrounding areas. Peter describes himself as having grown up on the land and as an “old school Liberal,” entering politics out of concern about national economic challenges including high government debt, inflation and rising interest rates.

Takeaways

Markets help—but aren’t perfect: Prices usually allocate scarce fuel efficiently, but panic buying and logistics can still create short-term shortages.

Diesel is critical infrastructure: It powers transport, farming, mining, and supply chains—making it far more economically important than petrol.

Energy shocks are stagflationary: Higher fuel prices raise costs and reduce economic activity at the same time.

Agriculture is highly exposed: Fertiliser shortages and higher diesel costs could reduce yields and farm profitability.

Policy trade-offs are tough: Governments face difficult choices on fuel taxes, spending, and how to respond to a supply-side shock.

Timestamps

0:00 – Intro: fuel shock fears and “Mad Max” scenarios

2:40 – Oil prices surge and diesel costs spike

9:00 – Are we underestimating the risks?

12:50 – Fertiliser shortages and farming realities

25:00 – Food supply vs distribution challenges

29:00 – Why diesel is the critical constraint

41:50 – Fuel excise debate and policy responses

52:50 – Final reflections and listener call-out

Links relevant to the conversation

ATA livestream “Real situation in rural Australia”:

https://www.youtube.com/live/MczcHEBXXIY?si=cLVJ3EWjserUeXNU

Charts that Gene talks about:

https://drive.google.com/file/d/1siZwkNV7QLF1PXdeg6mZJt_uomZuRpZN/view?usp=sharing

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