The Double Chokepoint: How Hormuz Controls Both Energy and Food

The Strait of Hormuz is 33 kilometers wide at its narrowest point. Through this corridor pass roughly 20 to 21 million barrels of crude oil every day, a fact that appears in every strategic assessment of the Persian Gulf. What almost never appears in those assessments is the other cargo transiting the same water: millions of tonnes of ammonia and urea, the nitrogen fertilizers without which modern agriculture cannot feed half the planet. The world has built two existential dependencies on a single geographic bottleneck, but for fifty years it has only talked about one.

The Strait Nobody Measures Twice

Every major energy institution tracks Hormuz with precision. The U.S. Energy Information Administration publishes regular updates on oil volumes. The International Energy Agency maintains contingency frameworks. Navies conduct exercises for worst-case scenarios. This attention is warranted: roughly one-fifth of global petroleum consumption passes through the strait daily.

But the same waters carry something else. Qatar, through its subsidiary Muntajat, exports approximately five to six million tonnes of urea per year, virtually all of it shipped through Hormuz. Saudi Arabia sends several million more tonnes of fertilizer products from its Gulf coast terminals. Iran, Oman, and the UAE add their own volumes. Collectively, the Persian Gulf states account for a substantial share of globally traded nitrogen fertilizer, the chemical input that enables the Haber-Bosch process to convert atmospheric nitrogen into the food supply for roughly four billion people.

For oil, this chokepoint has bypass options. Saudi Arabia's East-West Pipeline can move up to seven million barrels per day from Abqaiq to Yanbu on the Red Sea, circumventing Hormuz entirely. The UAE's Habshan-Fujairah pipeline adds another 1.5 million barrels per day of bypass capacity. For fertilizer, no such infrastructure exists. Ammonia must travel in specialized pressurized or refrigerated vessels. Urea moves in bulk carriers. Both require port access, and the Gulf's fertilizer export terminals sit inside the Hormuz corridor. Every tonne must pass through the strait.

A Vulnerability Built Over Decades

This concentration did not emerge by accident. The Haber-Bosch process, which synthesizes ammonia from nitrogen and hydrogen, consumes roughly 28 to 33 gigajoules of natural gas per tonne of output, depending on plant age and efficiency. Where natural gas is cheapest, ammonia production is most profitable. Persian Gulf states have historically offered domestic gas at $1.25 to $1.75 per million British thermal units, a fraction of the eight to fifteen dollars common in Europe or Northeast Asia. Over three decades, this price differential pulled ammonia and urea capacity toward the Gulf with the relentless logic of comparative advantage.

European ammonia plants closed or reduced output. Asian producers struggled to compete. New capacity overwhelmingly went to Qatar, Saudi Arabia, and Iran, where feedstock costs made every other location look uneconomical. The result was a global fertilizer supply chain optimized for cost and concentrated in geography, a structure that functions perfectly as long as the corridor remains open.

Few countries anticipated the need to hedge against this concentration. Strategic petroleum reserves exist across the developed world, mandated by the IEA's founding charter. The United States alone stores roughly 400 million barrels in salt caverns along the Gulf of Mexico coast. Japan, Germany, and other IEA members maintain 90-day reserves as a matter of policy. For fertilizer, no Western nation or multilateral body maintains comparable emergency stockpiles. China is the sole major exception, holding national fertilizer reserves managed by the National Development and Reform Commission, reserves it began tapping in March 2026 when the Hormuz disruption hit. For the rest of the world's importing nations, the buffer does not exist.

What 1973 Taught and What It Didn't

The lesson that created today's oil security infrastructure originated in October 1973, when the Organization of Arab Petroleum Exporting Countries imposed an embargo that sent the price of Arabian Light crude from approximately three dollars to twelve dollars per barrel within months. The response was structural: the IEA was founded in 1974 with an explicit mandate to coordinate emergency oil sharing. France accelerated its nuclear program, reaching roughly 75 percent nuclear electricity generation by 1990. Consuming nations diversified suppliers, built reserves, and invested in alternatives.

This response was thorough, rational, and incomplete. It addressed energy dependency but ignored the agricultural input chain that runs through the same geography. In 1973, nitrogen fertilizer production was more globally distributed, and the Persian Gulf's dominance had not yet taken shape. By the time Gulf ammonia capacity surged in the 1990s and 2000s, the 1973 lesson had hardened into an institutional framework focused exclusively on oil. The IEA tracks energy. The Food and Agriculture Organization monitors food prices. No institution sits at the intersection, tracking the chokepoint risk to fertilizer supply the way the IEA tracks oil flows through Hormuz.

The Multiplier Nobody Models

When energy and fertilizer disruptions originate from the same source, the effect on food prices is not additive but multiplicative. Each disruption amplifies the other through distinct transmission channels.

An energy price spike raises the cost of farming operations directly: diesel for tractors and combines, electricity for irrigation pumps, fuel for transport from field to market. It also raises the production cost of fertilizer itself, since energy constitutes 30 to 40 percent of ammonia manufacturing costs. A fertilizer supply disruption reduces available inputs for the coming growing season, lowering expected yields. When both occur simultaneously, the cost of producing food rises while the quantity produced falls. Farmers face higher input prices on every front while the physical quantity of available fertilizer shrinks. The price response compounds.

The 2022 crisis demonstrated this dynamic, though imperfectly. Russia's invasion of Ukraine disrupted both energy supplies to Europe and fertilizer exports from Russia and Belarus, which together accounted for a significant share of global potash and nitrogen exports. The FAO Food Price Index hit an all-time high in March 2022. But the 2022 disruption was geographically distributed: Russian gas flowed through European pipelines while Belarusian potash moved overland. Energy and fertilizer problems came from different corridors.

Hormuz is different. It concentrates both disruptions in a single chokepoint. A blockade or severe restriction of Hormuz traffic simultaneously cuts oil supply, LNG supply, and fertilizer feedstock supply to world markets. There is no geographic diversification of risk, no separate corridor to protect, no possibility of addressing one disruption without addressing the other. The same naval confrontation, the same insurance withdrawal, the same vessel rerouting that disrupts energy also disrupts the inputs for the next harvest.

March 2026: The Test

When vessel traffic through the Strait of Hormuz dropped from approximately one hundred ships per day to roughly six in early March 2026, the oil dimension dominated headlines and trading floors. Crude prices spiked. Analysts calculated the shortfall. Governments signaled willingness to release strategic reserves. The response infrastructure built after 1973 activated exactly as designed.

The fertilizer dimension received almost no attention, in part because no institution exists to raise the alarm. Yet the timing could not have been worse. The Northern Hemisphere's spring planting season runs from March through May, the period of peak fertilizer demand across North America, Europe, and the grain belts of Central and East Asia. Nitrogen fertilizer must be applied before or during planting to be effective. It cannot be stockpiled at the farm level in large quantities, and it cannot be applied retroactively once the planting window closes.

A two-week oil disruption can be buffered by reserves and managed through demand adjustments. A two-week fertilizer disruption during spring planting creates yield losses that manifest six months later at harvest. The price signal arrives immediately as futures markets respond, but the physical impact on food production unfolds with agricultural time, not market time. By the time the harvest shortfall becomes visible, the cause has long since left the front pages.

The Map the Strategists Forgot

For fifty years, strategic thinking about maritime chokepoints has remained energy-centric. War games model tanker interdiction scenarios. Insurance markets price crude shipping risk through Hormuz with granular precision. Naval deployments orient around the oil flow. This is the map inherited from the Cold War, updated for the age of LNG but structurally unchanged.

The food dimension of Hormuz occupies a gap between institutional mandates. The IEA was built for oil. The FAO was built for food prices and agricultural development. The World Food Programme responds to hunger emergencies. No multilateral body coordinates fertilizer supply chain security the way the IEA coordinates petroleum reserves. The concept of a strategic fertilizer reserve has appeared in policy papers and academic discussions, yet outside China, no country has implemented one at meaningful scale.

The double chokepoint at Hormuz is not a prediction or a scenario. It is a structural fact that has existed for two decades and became operationally relevant in March 2026. The world spent fifty years fortifying the energy half of its Gulf dependency. The agricultural half remains exactly as exposed as it was the day the first ammonia carrier sailed through the strait.

Related: 33 Kilometer die die Weltwirtschaft kontrollieren - Energy perspective on Hormuz chokepoint