MarketsFinancial TimesMay 25, 2026· 1 min read
Geopolitical Tensions Squeeze Sulphur, Threatening Global Fertiliser Output

Fertiliser manufacturers are reducing production due to tightened global sulphur supplies, stemming from geopolitical tensions involving Iran. This disruption threatens crop yields, particularly in developing countries, and is likely to elevate food prices globally.
Leading fertiliser manufacturers are scaling back production due to a significant constriction in global sulphur supplies, a direct consequence of the escalating conflict involving Iran. This disruption, initially centered on geopolitical instability, is now rippling through critical agricultural inputs. Sulphur is a vital component in the production of phosphate fertilisers, essential for crop growth and yield optimization worldwide.
The immediate economic implication is a reduction in fertiliser availability and an anticipated increase in prices. Developing nations and their agricultural sectors are particularly vulnerable, as farmers in these regions may be compelled to reduce the application of phosphate fertilisers to manage costs. Such a reduction in input usage is directly linked to lower crop yields, jeopardizing food security and farmer incomes.
While the direct cause is rooted in geopolitical events, the economic ramifications extend to supply chain stability and agricultural commodity markets. The fertiliser industry, a cornerstone of global food production, faces a dual challenge of securing raw materials amidst conflict and managing cost pressures that disproportionately affect food producers in emerging economies. The longer-term outlook suggests potential inflationary pressures on food prices globally, alongside heightened risks of food scarcity in economically vulnerable regions if sulphur supply constraints persist or worsen.
Analyst's Take
The market may be underestimating the potential for second-order food inflation originating from this supply shock. While initial impacts focus on agricultural inputs, persistent disruptions could trigger a 'food-is-oil' moment, leading central banks to face an even more complex trade-off between fighting inflation and supporting growth, especially if this coincides with other commodity price increases.