A deepening fertiliser supply shock could lead to a pronounced decline in Australia’s fertiliser consumption as growers respond to elevated prices, despite the strengthening of the Australian dollar.
Investors are increasingly viewing fertiliser markets not just as an agricultural input story, but as a barometer of geopolitical risk transmission into inflation, with supply chain fragility and trade disruptions reinforcing the sector’s role as a key swing factor in the global macro outlook.
According to Rabobank’s latest Semi-annual Fertiliser Outlook, geopolitical disruption in the Middle East and constraints on key trade routes have triggered a sharp reduction in the global flow of critical nutrients, tightening supply across nitrogen and phosphate markets and driving prices well ahead of underlying agricultural commodity gains.
“Prices for nitrogen and phosphates have risen far faster than agricultural commodity prices, which is compressing farm margins globally and accelerating affordability pressure,” the report said.
The bank’s RaboResearch division says the resulting imbalance has pushed fertiliser affordability into negative territory, with little prospect of meaningful recovery in 2026.
Report lead author, RaboResearch senior analyst – farm inputs Bruno Fonseca said this “raises the risk of widespread fertiliser ‘demand destruction’ as farmers around the globe reduce application rates, delay purchases or shift crop choices”.
Nitrogen markets are identified as the most exposed to further volatility, with spillovers from weaker conditions in one nutrient category expected to weigh on demand across the broader sector.
“The outlook for 2026 points to continued pressure on farm economics and increased downside risks for global crop production and food price stability,” Fonseca said.
According to RaboResearch’s Australia-based commodities analyst, Paul Joules, the conflict has highlighted the fragility of Australia’s fertiliser supply chain, with the country heavily reliant on imports for critical products, such as urea and MAP (mono-ammonium phosphate).
“Accounting for currency movements, we estimate Middle East granular urea prices have surged an eye-watering 94 per cent year to date (YTD),” he said. “DAP (diammonium phosphate) FOB (free on board) prices have risen a more modest eleven per cent YTD, while Vancouver spot FOB potash prices have largely evaded significant price inflation, having risen by two per cent over the same period.”
The Australian dollar – traditionally a key shock absorber for imported inputs – had strengthened sharply over the past 12 months.
“However, despite this currency appreciation, fertiliser input prices have remained elevated due to ongoing constraints in global urea and natural gas supply chains, meaning Australian growers have still felt retail price inflation,” he said.
While any further strength in the Australian dollar would be expected to help offset high input costs, recent volatility in urea and phosphate markets suggests global supply and demand fundamentals will continue to exert an outsized influence on local pricing.
Against this backdrop, analysts say fertiliser markets are increasingly behaving less like a cyclical input sector and more like a geopolitically-sensitive structural constraint on global food production.
With input costs rising faster than farmgate commodity prices, the imbalance is feeding directly into broader macro concerns around inflation persistence, agricultural productivity, and the resilience of global food supply chains.
Fonseca added that a protracted conflict or extended closure of the Strait of Hormuz would further exacerbate supply chain stress, prolonging the period of negative fertiliser affordability.
“In such a scenario, farmers may switch to planting crops that require less nitrogen or choose to lower application rates and/or planted areas, impacting demand for a longer period.”
For investors, the implications extend beyond agriculture into broader inflation and commodities positioning, as fertiliser costs remain a key upstream driver of global food prices and a potential constraint on real income growth in both developed and emerging markets.
Persistently elevated input prices also raise the risk of volatility in food-linked CPI baskets, reinforcing fertiliser markets as an underappreciated but critical transmission channel in the global inflation outlook.
“Against this backdrop of compressed margins, Australian farmers – driven by the combination of disappointing grain prices and elevated fertiliser costs – may increasingly favour crops that have historically demonstrated greater margin resilience under variable seasonal conditions,” Mr Joules said. “Barley and canola are therefore likely to gain ground relative to wheat.”
RaboResearch expects a pronounced decline in total fertiliser consumption in Australia as growers respond to elevated prices and strategically adjust cropping rotations.
