Escalating conflict between the US and Iran is disrupting shipping through the Strait of Hormuz, a critical chokepoint for global nitrogen fertilizer trade. With about one-third of the world's nitrogen fertilizer passing through this waterway, overseas buyers of urea, ammonia, and other nitrogen-based chemicals face potential supply shortages and price spikes within weeks, just as the Northern Hemisphere spring planting season begins.
Supply-chain impact
The Strait of Hormuz is a vital artery for energy and commodity exports from the Gulf region. Heightened security risks have led many commercial vessels to suspend transit, causing cargo delays and stranding ships at sea. Analysts warn that while oil and gas markets are feeling the immediate impact, global nitrogen fertilizer supply is the next vulnerable link. The region hosts major fertilizer exporters whose products cannot reach international markets if shipping remains restricted, even if production continues.
Market signals and price trends
Futures contracts for urea—a common nitrogen fertilizer used in corn and other crops—delivered to the New Orleans export hub have surged from about $400 per metric ton to $600 per metric ton in just two weeks. Jake Hanley, chief growth officer at commodity investment firm Teucrium, notes that the nitrogen fertilizer industry has almost no spare capacity. Unlike oil, there are no strategic reserves for fertilizers, making supply gaps difficult to fill quickly. New plants take years to build, and existing facilities are already running near full capacity.
What buyers should watch
Buyers should monitor the Strait of Hormuz shipping status closely over the next three to six weeks. Historically, fertilizer prices have spiked sharply three to six weeks after oil price increases triggered by regional conflicts. The timing is especially critical for the US spring planting season, when farmers purchase and apply fertilizers. If disruptions persist into late March or April, the focus will shift from shipping delays to actual shortages of nitrogen fertilizers for the summer growing season.
Compliance and logistics signals
The American Farm Bureau Federation has urged the US government to intervene, warning of a "systemic shock" to agriculture. In a letter to the White House, Farm Bureau President Zippy Duvall requested measures including US Navy escort for fertilizer cargo vessels and federal assistance to resolve insurance and financing obstacles for fertilizer shipments. These actions, if implemented, could help stabilize supply chains but may take time to materialize.
China sourcing context
While the immediate impact is concentrated on Gulf-region exports and US imports, Chinese fertilizer producers and traders should watch for potential shifts in global trade flows. If Hormuz shipping remains blocked, buyers may seek alternative nitrogen fertilizer sources from other regions, including China. However, China's own domestic demand and export controls on fertilizers could limit its ability to fill the gap. The situation underscores the importance of diversifying supply sources and maintaining flexible logistics planning.
Source: Read the original report | Published: March 14, 2026