The closure of the Strait of Hormuz, often analyzed through the lens of energy markets, poses a far graver threat to global agriculture, particularly in the United States. While the immediate focus has been on oil shipments, the Strait also serves as a critical conduit for fertilizers and the essential inputs needed to produce them. Urea, ammonia, sulfur, and phosphorus—vital components of modern farming—are already facing supply disruptions, with prices skyrocketing.

Economic Impact on U.S. Farmers

According to reports, urea prices have surged by 55% in Kentucky, and 70% of U.S. farmers are struggling to afford enough fertilizer for the spring planting season. Fertilizer affordability has deteriorated to levels not seen since the Arab Spring, forcing farmers to make difficult decisions about crop yields and planting schedules. Missed fertilizer applications could result in significant reductions in staple crop outputs such as wheat, rice, and maize.

Every week of delay raises the probability that the final bill will be paid in lower yields, higher food prices, and deeper instability.

Global Cascade Effects

The crisis extends beyond the Strait itself. The Gulf region is pivotal for the movement of natural gas, sulfur, and ammonia—inputs essential for fertilizer production worldwide. Disruptions in these supply chains have cascading effects, impacting factories, traders, distributors, and farms across multiple continents. Import-dependent economies in Africa and Asia are particularly vulnerable, but the U.S. is also feeling the strain.

Urgency for Action

The Food and Agriculture Organization warns that a Hormuz closure beyond 90 days could trigger a systemic agrifood shock within six to twelve months. Governments must prioritize reopening the Strait or establish protected shipping lanes specifically for fertilizers and their inputs. Such measures require robust transparency and deconfliction processes, backed by credible monitoring and UN support, to ensure shipments can move without arbitrary interference or security risks.

The clock is ticking, and the stakes for American agriculture and global food security could not be higher.