Professor Matthew Harrison FTSE, Climate Resilience Leader, University of Tasmania, Media Release, 26 January 2026
Without agriculture, hundreds of millions of people would go hungry every day. Yet modern agriculture is increasingly judged not just on how much food it produces — but on how well it stores carbon, protects biodiversity, and reduces emissions. Farmers are being asked to deliver food, climate solutions and conservation outcomes, while still running profitable businesses.
So what actually works? For half a decade, we worked with farmers across southern Australia to co-design practical changes that aimed to improve productivity, profitability and biodiversity, while lowering greenhouse gas emissions. This wasn’t top-down. The practices were designed with farmers, grounded in real-world constraints.
What we learned:
- There is no silver bullet. The biggest gains came from targeting site-specific constraints. Blanket “best practice” climate solutions often underperformed compared with tailored ones.
- All carbon is not equal. Carbon stored in soils and trees can be lost in drought, fire or land-use change. In contrast, technologies that directly reduce methane emissions deliver immediate and permanent abatement. Policy and carbon markets should treat these differently.
- Most climate measures still hurt profit. Even with carbon or biodiversity payments, many interventions reduced farm income. If society wants environmental outcomes, payments for ecosystem services will need to better reflect the true costs and risks carried by farmers.
- Co-benefits are the game changer. When carbon-focused practices also lifted production — like better pastures increasing liveweight gain or wool cut — profitability improved dramatically.
- Nature-based solutions often made more financial sense than high-tech emissions-reduction options. Tree planting and soil carbon frequently outperformed feed additives on profit.
- Stacking practices worked best. Combining complementary changes delivered far better outcomes than single interventions, especially on farms facing multiple constraints.
Bottom line: Climate and biodiversity solutions in agriculture will only scale if they also make sense as farm businesses.
