March 24, 2026 | The Food Supply Chain Is Breaking. Again

Spring has sprung, which means seeds that were planted in late winter are starting to germinate. They’re hungry and will only grow to their full nutritional potential if they’re well fed. But that, apparently, isn’t happening, as fertilizer supplies are interrupted by yet another pointless Middle East war.

The result? Global food shortages that might dwarf the COVID-era Costco-hoarding mess of recent memory. Here’s an overview:

Shanaka Anslem Perera @shanaka86

BREAKING: The nitrogen trap just closed. Three locks snapped shut simultaneously. The planting window is closing behind them. And the food the world eats next year is now being decided by molecules that cannot reach the soil in time.

Lock one: the Strait of Hormuz. The IRGC permissioned corridor allows oil tankers from friendly nations to pay $2 million in yuan and pass. It does not allow fertiliser vessels to pass at any price. Zero approved fertiliser transits in 24 days. The Gulf supplies 49 percent of the world’s exported urea and roughly 30 percent of traded ammonia. That supply is not delayed. It is denied. The gate opens for molecules that fund the gatekeeper. It stays closed for molecules that feed the planet.

Lock two: Russia. The world’s largest exporter of ammonium nitrate just halted all AN exports until after April 21. Three to four million tonnes per year, gone from global markets at the exact moment the Northern Hemisphere needs it most. The official reason is “domestic priority.” The strategic effect is leverage. Russia earns windfall revenue from the oil price spike its ally’s war created, then removes the fertiliser that farmers need to plant through the crisis. The disease and the cure, again, from the same address.

Lock three: China. Beijing has banned exports of nitrogen-potassium blends and phosphate fertilisers through August 2026. China is the world’s largest phosphate producer and a major nitrogen supplier. The ban removes the last alternative source that could have compensated for Hormuz and Russia. Three locks. Three countries. Three deliberate decisions timed to the same biological calendar.

The biological calendar does not negotiate. Corn requires nitrogen at the V6 to VT growth stage or kernel set is permanently reduced. Wheat requires it at tillering and jointing or grain fill collapses. Rice requires it at transplanting or yield drops 20 to 40 percent in low-input systems. These are not economic models. They are cellular processes. The plant either receives nitrogen during the window or it does not. If it does not, no subsequent application, no price increase, no policy reversal can recover what was lost. The damage is written into the biology of the seed.

The US Corn Belt window closes mid-April. European top-dressing is happening now. Indian Kharif preparation begins in May. Bangladeshi Boro rice transplanting is underway this week. Every one of these windows is closing while the three largest sources of nitrogen on Earth are simultaneously locked: Hormuz by military blockade, Russia by export decree, China by trade ban.

The USDA Prospective Plantings report arrives March 31. The FAO Food Price Index publishes April 3. These will quantify what the molecules already know: the nitrogen did not arrive. The yield loss is locked in. The 5 to 10 percent global drag will concentrate where the buffers are thinnest: subsistence farms in Bangladesh, Sub-Saharan Africa, South Asia, where a 20 percent shortfall does not mean lower profits. It means hunger.

Sri Lanka banned synthetic fertiliser in 2021. Rice yields collapsed 40 percent. The government fell. In 2008, fertiliser and oil spiked simultaneously and food riots erupted across 30 countries. In 2026, the strait blocks fertiliser while Russia and China withdraw the alternatives, and the planting windows close on a planet with nowhere else to turn.

The war is fought with missiles. The famine is fought with molecules. The molecules are trapped behind three locks on three continents, timed to the one calendar that cannot be paused, extended, or negotiated: the calendar written into the DNA of every seed in the soil.

Read a deeper dive here.

This is Why We Should Have Gardens…and Gold, Goats, and Guns

Even after the pandemic, many (most?) people in the developed world continue to view “food supply chain disruption” as a tin-foil-hat concern. They’re apparently wrong. Again.

And note that higher food prices are just the first-order effect of a fertilizer shortage. The second and third-order impacts are geopolitical and possibly military.

So let this latest “peak complexity” signal encourage you to keep prepping. Anticipate shortages, higher prices, even more chaotic politics, and take some of the steps we’ve been discussing here.

John Rubino March 24th, 2026

Posted In: John Rubino Substack

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