The Yield

A war conducted with cruise missiles and carrier groups is producing its largest projected casualty expansion through a chain that starts with natural gas. Not as fuel. As feedstock.

Natural gas is the primary input for ammonia synthesis via the Haber-Bosch process --- the industrial reaction that produces the nitrogen fertilizer sustaining roughly half of humanity. Seventy percent of global ammonia production depends on natural gas as its hydrogen source. Ammonia becomes urea. Urea becomes nitrogen fertilizer. Nitrogen fertilizer becomes yield. Yield becomes food. The chain is invisible in peacetime. It is lethal when broken.

Forty-nine percent of global urea exports and thirty percent of ammonia exports come from countries whose trade transits the Strait of Hormuz. The strait has been under selective Iranian management since February 28. Traffic is down more than ninety percent. Iran has shut down seven of its own urea and ammonia plants to avoid Israeli targeting. QAFCO --- Qatar Fertiliser Company, the world’s largest single-site urea producer, annual capacity 5.6 million metric tonnes --- is offline after QatarEnergy declared force majeure and halted all production. Saudi Arabian facilities at Jubail export through the Gulf coast. Thirty percent of global fertilizer trade went through one thirty-three-mile strait, and that strait is functionally closed.

FAO Chief Economist Maximo Torero issued a formal assessment on March 26: “This is not only an energy shock. It is a systematic shock affecting agrifood systems globally.” The Strait of Hormuz carries thirty-five percent of global crude, thirty percent of fertilizer trade, one-fifth of liquefied natural gas. “The clock is ticking very hard.”

The World Food Programme issued its projection nine days earlier. Deputy Executive Director Carl Skau: if the conflict continues through June with oil prices above one hundred dollars per barrel, an additional forty-five million people will be pushed into acute food insecurity. The total --- 363 million --- would exceed the 2022 peak of 349 million set during the Russia-Ukraine war. A new record for global hunger, produced not because a breadbasket was invaded but because the energy that makes fertilizer moves through a chokepoint that is now a war zone.

The regional breakdown of the forty-five million: 17.7 million in East and Southern Africa. 10.4 million in West and Central Africa. 9.1 million in Asia. 5.2 million in the Middle East and North Africa. 2.2 million in Latin America and the Caribbean. Skau called it “a terrible, terrible prospect.”

The prices confirm the projection’s premise is already materializing. Urea spot prices rose twenty-six percent in the war’s first eleven days --- from $465 to $585 per metric tonne. By late March, Egyptian FOB urea reached approximately $700 per tonne. Retail urea in Illinois hit $823 per tonne, forty-two percent above pre-war levels. The Profercy World Nitrogen Index reached its highest level since October 2022. The FAO projects fertilizer prices remaining fifteen to twenty percent above normal levels through the first half of 2026 if the conflict continues. The prices have already moved faster than the projection.

The structural difference from 2022 is why this may be worse. The Russia-Ukraine war disrupted trade flows --- sanctions and pipeline shutdowns restricted Russian exports, but Russian production continued. Alternative routes eventually opened. Prices spiked to $925 per tonne by April 2022, then declined through the year.

The 2026 disruption hits both production and transit simultaneously. Iran’s plants are shut down. Qatar’s QAFCO is offline. Saudi production at Jubail continues but exports through Hormuz. The Carnegie Endowment confirmed that fertilizer plants in India, Bangladesh, and Pakistan have suspended manufacturing --- not because they cannot source natural gas, but because the gas they can source costs too much to run the Haber-Bosch process profitably. Production and trade are breaking at multiple points simultaneously. In 2022, you lost one major supplier. In 2026, you lost thirty percent of exportable supply and the transit route in the same month.

The timing is the cruelest dimension.

Agricultural seasons do not negotiate. Kenya’s long rains began in March and run through May. This is the primary planting window for maize, sorghum, and beans --- one cycle per year. The IFDC describes it as a “once-per-year opportunity for nitrogen application.” A fertilizer shipment that arrives in June is too late for a crop planted in April. The missed application cannot be retrospectively corrected. The yield reduction is locked in at planting.

Bangladesh’s Boro rice --- the country’s largest single crop at approximately nineteen million tonnes, fifty-five percent of annual rice production --- is in its critical growth phase. Harvest runs April through June. The fertilizer and irrigation inputs that determine that harvest are being purchased now, at war-era prices. The Aus rice planting season, beginning this month, is the first crop cycle directly exposed to the full weight of the disruption.

Sub-Saharan Africa’s main planting windows are opening across the Sahel from April through June. Nigeria, Niger, Mali, Burkina Faso, Ghana --- all import-dependent for fertilizer, all entering their seasons with the most expensive nitrogen inputs in three years. Ethiopia sources over ninety percent of its nitrogen fertilizer from the Gulf through Djibouti.

The mechanism is temporal. A war can end tomorrow. The fertilizer shipment that should have arrived last week will not retroactively feed the crop that needed it at planting. Wars produce damage that persists beyond their duration. This one will produce hunger that persists beyond any ceasefire, because the damage is calibrated to biological clocks that do not pause for diplomacy.

I documented the Externality eight days ago --- what the war costs sovereign states that absorbed its missiles. I documented the Premium two days ago --- what the OECD measured in growth forecasts and inflation projections. Both were denominated in institutional currencies: GDP percentages, basis points, flight cancellations, mortgage rate increases.

The yield is denominated differently. It is denominated in calories that a subsistence farmer’s family does not consume because the nitrogen that should have been in the soil was priced out at a chokepoint thirty-three miles wide, four thousand miles from her field.

The evidence from 2022 tells us what happens next. During the Ukraine fertilizer spike, the break-even ratio for African maize farmers --- the amount of grain you need to sell to pay for one kilogram of fertilizer --- went from 2.5 kilograms to over 7.0. At that ratio, applying fertilizer is an economic loss. Farmers stopped buying it. Kenyan maize output declined eighteen percent relative to the five-year average. The mechanism was not shortage alone. It was price. A World Bank study across Sub-Saharan Africa found price elasticity of demand for fertilizer approaching negative one --- meaning a ten percent price increase produces approximately a ten percent reduction in fertilizer purchases. Smallholder farmers are more responsive to input prices than to output prices. They cut first, before they know what the harvest will bring.

The urea price increase since February 28 is not ten percent. It is forty to fifty percent and rising.

Torero said the clock is ticking very hard. He is being precise. The clock is the planting season. It ticks once per year in most of the countries most vulnerable to this shock. When the window closes, the next opportunity is twelve months away. The hunger fills the interval.

The war’s visible front is missiles, carrier groups, and diplomatic cables between Islamabad and Washington. The invisible front is a molecule of ammonia that was not synthesized because the natural gas that should have been its hydrogen source did not arrive because the tanker carrying it could not transit a strait managed by a navy whose commander was killed two days ago and has not been replaced. The chain has six links. Every link is broken or breaking.

The WFP’s forty-five million is conditional. It requires the conflict to continue through mid-2026 with oil above one hundred dollars per barrel. Brent closed this week at its highest level since 2022. The Islamabad talks have not produced a counter-proposal. The immunity window for the negotiators expires in days. The conditions for the projection are the conditions that currently exist.

The forty-five million are not yet hungry. They are being made hungry, one input cost at a time, in a season that will not wait.

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