Fertilizer Market Update: How the Iran War Is Reshaping Input Costs This Spring
Mar 16, 2026
By Tim Krausman, VP Agronomy
The past month has brought one of the sharpest fertilizer market disruptions in recent memory as the war involving Iran has rapidly escalated. With the Strait of Hormuz—one of the world’s most critical fertilizer and energy corridors—partially shut down, nitrogen and phosphate markets have tightened dramatically at the worst possible time for Iowa growers preparing for spring fieldwork.
Nitrogen Products (NH₃, UAN, Urea) Hit First and Hardest
Global nitrogen markets reacted within days of the conflict. Urea, ammonia (NH₃), and UAN prices surged as supply chains tightened:
A vessel loaded in the Persian Gulf may not reach the U.S. interior until May, which puts timely nitrogen availability at real risk for spring pre‑plant applications.
Phosphate Market: MAP Under Immediate Pressure
Phosphate markets—especially MAP—have also reacted:
Potash: Still the Outlier—But Not Immune
Potash remains the only major fertilizer that has not yet reacted significantly:
Why This Disruption Is So Severe
Nearly one‑third of the world’s fertilizer supply moves through the Strait of Hormuz.
Now, commercial traffic through the route has largely halted, affecting nitrogen products most immediately and severely. The shutdown compounds several problems:
What Growers Should Do Now
With markets changing quickly, growers may want to work closely with their agronomy teams to review fertilizer plans and timing.
Bottom Line
The war in Iran has created a fertilizer shock unlike anything seen since 2022, but with more severe timing and broader global impact. Nitrogen prices have surged dramatically, MAP is climbing quickly, and logistical delays through the Strait of Hormuz threaten spring product flow.
As always, the IAS agronomy team will continue monitoring market conditions closely and working with our members to navigate changing fertilizer markets and protect crop productivity this season. For Iowa farmers entering planting season, decisive early action and close coordination with retailers will be essential to protect
The past month has brought one of the sharpest fertilizer market disruptions in recent memory as the war involving Iran has rapidly escalated. With the Strait of Hormuz—one of the world’s most critical fertilizer and energy corridors—partially shut down, nitrogen and phosphate markets have tightened dramatically at the worst possible time for Iowa growers preparing for spring fieldwork.
Nitrogen Products (NH₃, UAN, Urea) Hit First and Hardest
Global nitrogen markets reacted within days of the conflict. Urea, ammonia (NH₃), and UAN prices surged as supply chains tightened:
- Bloomberg reports surging prices for urea, ammonia, and other nitrogen products as the war amplified energy and chemical costs, placing fertilizer markets under severe strain just ahead of planting.
- U.S. urea import prices jumped 30% in a single week following the disruption of shipments through Hormuz.
- At the Port of New Orleans, nitrogen product prices moved sharply:
- Urea barges climbed from $150-200 per ton within days.
- NH₃ and UAN also rose, though with slightly less extreme volatility.
- Some suppliers have even pulled offers entirely due to rapid market swings.
A vessel loaded in the Persian Gulf may not reach the U.S. interior until May, which puts timely nitrogen availability at real risk for spring pre‑plant applications.
Phosphate Market: MAP Under Immediate Pressure
Phosphate markets—especially MAP—have also reacted:
- MAP prices have risen quickly, following sharp urea increases.
- StoneX analysis notes MAP values climbed ~$30 per ton in just days following the attack.
- Retailers report multiple price updates per day, an unusual departure from the typical once‑ or twice‑monthly pricing cadence.
Potash: Still the Outlier—But Not Immune
Potash remains the only major fertilizer that has not yet reacted significantly:
- Early‑month reports show potash as the only major nutrient not yet meaningfully impacted, though analysts caution that Middle Eastern instability could eventually reach global K markets as well.
- With Jordan a key player in potash production, ongoing tensions still pose risk to global supply.
Why This Disruption Is So Severe
Nearly one‑third of the world’s fertilizer supply moves through the Strait of Hormuz.
Now, commercial traffic through the route has largely halted, affecting nitrogen products most immediately and severely. The shutdown compounds several problems:
- Natural gas prices, a key input for nitrogen production, are soaring.
- U.S. fertilizer importers are facing shipping delays that threaten in‑season availability.
- Volatility is so intense that some American suppliers are refusing to quote prices.
What Growers Should Do Now
With markets changing quickly, growers may want to work closely with their agronomy teams to review fertilizer plans and timing.
- Finalize nitrogen plans early—especially NH₃ and UAN.
- Lock in remaining tons quickly, as logistics delays are increasingly likely.
- Consider risk‑mitigating N strategies (split applications and inhibitors).
Bottom Line
The war in Iran has created a fertilizer shock unlike anything seen since 2022, but with more severe timing and broader global impact. Nitrogen prices have surged dramatically, MAP is climbing quickly, and logistical delays through the Strait of Hormuz threaten spring product flow.
As always, the IAS agronomy team will continue monitoring market conditions closely and working with our members to navigate changing fertilizer markets and protect crop productivity this season. For Iowa farmers entering planting season, decisive early action and close coordination with retailers will be essential to protect