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Fertiliser prices have surged as the Iran war constricts supply through the Strait of Hormuz, which carries about one-third of seaborne fertiliser trade. Ships have been hit and traffic has largely halted since the conflict began on February 28.
Food insecurity warnings are growing ahead of Northern Hemisphere spring planting.
Higher fertiliser costs during spring application raise grower input costs and may shift acreage away from nitrogen-intensive corn, influencing feed grain supply and prices.
cnbc.comChloe Taylor, Sam MeredithMar 25, 2026After 205 past bullish geopolitics events, Urea moved a median +0.4% over 5 sessions (53% higher; middle half -2.1% to +3.0%), and -0.4% over 20.
After 114 past bullish geopolitics events, DAP moved a median +0.0% over 5 sessions (50% higher; middle half -0.3% to +1.2%), and +0.3% over 20.
After 323 past bullish geopolitics events, Corn moved a median +0.5% over 5 sessions (57% higher; middle half -1.5% to +2.9%), and +0.9% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.
Hormuz disruption since Feb 28 constrains about one-third of seaborne fertilizer trade, and the 2026-03-25 surge in fertilizer prices and food security warnings plausibly fed a sharp one-day DAP jump through supply and sentiment.
