Fertilizer Shock: How the Strait of Hormuz Closure Could Trigger a Global Food Shortage Catastrophe, By Brian Simpson
Michael Snyder's March 17, 2026, Substack post, titled "Fertilizer Shock: The Closure Of The Strait Of Hormuz Could Cause Widespread Global Food Shortages," delivers a stark warning: the ongoing U.S.-Israel war with Iran has effectively shut down commercial traffic through the Strait of Hormuz, the world's most critical energy chokepoint, and this is now cascading into a severe fertilizer crisis that threatens food production worldwide. If the strait remains paralysed for months — rather than weeks — the result could be reduced crop yields, soaring food prices, and outright shortages, pushing millions toward hunger and famine.
The thesis is clear and urgent: modern agriculture depends heavily on synthetic fertilizers, particularly nitrogen-based ones like ammonia and urea, which feed roughly half the global population (about 4 billion people). Disruptions to fertilizer supply chains aren't abstract, they directly translate to less food on the table. Snyder argues we're entering "nightmare territory" because the timing couldn't be worse: Northern Hemisphere spring planting (mid-April 2026 onward) is imminent, and farmers are already scrambling for inputs that simply aren't arriving.
The trigger is the de facto closure of the Strait of Hormuz amid escalating conflict. This narrow waterway handles roughly 20-30% of global oil but also one-third of traded nitrogen fertilizer and half of traded sulphur (key for phosphate fertilizers). Tanker traffic has plummeted, insurance costs have exploded, and shipments are stalled or rerouted at prohibitive expense. The Gulf region (Qatar, UAE, Saudi Arabia, Iran) is a major hub for fertilizer production and export, accounting for 40-50% of seaborne urea trade, nearly 30% of ammonia, and significant phosphates.
Compounding the shipping blockade are direct production hits:
Surging natural gas and LNG prices make fertilizer manufacturing uneconomic in import-dependent countries. Natural gas is the primary feedstock for the Haber-Bosch process that produces ammonia (70-80% of variable costs).
Nations like India (53% LNG-dependent for fertilizer), Pakistan (nearly all), and Bangladesh (72%) are seeing plants shut down or curtail output.
China, the world's top producer, has imposed strict export restrictions on urea and nitrogen-potassium blends to secure domestic supplies, further tightening global availability.
Reports indicate specific shutdowns, such as Qatar's QAFCO halting its 5.6 million-tonne urea plant after LNG disruptions at nearby sites.
U.S. farmers are feeling the pain acutely. Virginia farmer John Boyd reports inability to secure fertilizer, risking lower yields for corn, soybeans, and wheat. Oklahoma Farm Bureau President Stacy Simunek bluntly states: there's "no way to grow food without fertilizer," questioning who will feed the world if supplies dry up. While the U.S. produces much of its own fertilizer (benefiting from relatively cheaper domestic natural gas), global price spikes (urea up 30-35% in early March, broader surges of 6.5% or more) still hit hard, especially with diesel and fuel costs also elevated (U.S. petrol averages over $5/gallon).
The global implications are grim:
Reduced fertilizer application leads to lower crop yields for staples like wheat, rice, and corn.
Food prices rise first in the West (already strained by inflation), but impoverished nations face the worst: hundreds of millions already hungry could tip into famine.
The crisis exposes vulnerabilities in the "tremendously productive" but energy-intensive food system — 20% of food is lost post-harvest anyway, and any yield drop amplifies shortages.
Snyder doubts quick fixes. The Trump administration (via NEC Director Kevin Hassett) is reportedly seeking alternatives, but reopening the strait peacefully seems unlikely — Iranian officials declare it "cannot be the same" due to insecurity, NATO allies stay out, and escalation options (concessions, ground troops, nuclear) are off the table or catastrophic. Without resolution, prolonged disruption means a "full-blown national crisis" in food security.
This isn't speculation, it's building on real-time market signals: fertilizer benchmarks spiking just as planting ramps up, plants idling, and experts (from Wolfe Research to UNCTAD) warning of knock-on food inflation. Snyder's alarm echoes earlier shocks (2022 Ukraine war fertilizer crunch), but this one hits harder due to the scale of Gulf dependency and no easy substitutes on the horizon.
The takeaway is sobering: in an interconnected world, one geopolitical flashpoint can unravel food abundance built on cheap energy and reliable trade. Stockpiling, shifting to regenerative practices, or boosting domestic production offer partial buffers, but for now, the fertilizer shock is here — and if the strait stays closed, global hunger could follow. The era of assuming endless cheap inputs may be ending abruptly.
https://michaeltsnyder.substack.com/p/fertilizer-shock-the-closure-of-the
