The blockade of the Strait of Hormuz, sparked by the Iran conflict, is causing a rare structural divergence in the global fertilizer supply chain. When combined with the threat of an El Niño climate pattern, global food markets are approaching a dual supply crisis that could echo the stagflation dynamics of the 1970s.
While a full-blown surge in grain prices hasn't been triggered immediately by the blockade, the fertilizer market is experiencing a sharp internal split. Phosphate fertilizer prices have surged by 25% due to a shortage of sulphur, whereas urea prices have fallen by 20% due to released supply from China and high inventory levels. This extreme supply-demand divergence is creating differentiated cost pressures for various crops, quietly reshaping the global agricultural cost curve.
What's more alarming for investors is the macro resonance forming between extreme climate risks and soaring energy prices. Analysts warn that the dual supply shock to energy and food could replicate the inflationary nightmare of the 1970s. This would not only directly drive up global food prices but could also trap central banks in a deeper policy dilemma between fighting inflation and preventing a recession.
Although current aggregate fertilizer price indicators have eased, pointing to moderate food prices in the short term, the combination of supply chain fragility and climate risk means the global food crisis warning is far from over.
The Structural Split in the Fertilizer Supply Chain: Phosphate Soars, Urea Falls
The effective blockade of the Strait of Hormuz poses a direct threat to global fertilizer trade. Before the conflict, approximately one-third of the world's urea and 15% of its ammonia trade transited through the strait. However, as Bloomberg macro strategist Simon White points out, nitrogen-related compounds have been relatively less impacted by the war so far. Ammonia prices have only edged higher, while urea prices have actually fallen 20% since the start of the conflict.
Urea's counter-trend decline is mainly due to a series of buffer factors: global inventories remain relatively high, farmers in the Northern Hemisphere have completed their advance purchases, and China has released additional urea supply, effectively capping any price upside.
In contrast, the phosphate fertilizer supply chain is far more exposed to Middle East tensions. Phosphate production is highly dependent on sulphuric acid, and 50% of the world's sulphur exports come from the Gulf region. Driven by a sulphur shortage, phosphate fertilizer prices have surged 25% since the conflict began. This "phosphate up, urea down" divergence means that cash crops reliant on phosphate and field crops reliant on urea will face very different cost pressures. This, in turn, will influence farmers' planting intentions and the future structure of crop supply.
El Niño Adds an Invisible Threat to Crop Yields
On top of the divergence in fertilizer costs, the risk of an El Niño climate pattern further amplifies the fragility of global food supply. Extreme weather patterns can not only directly cause crop failures in major producing regions but also alter the transmission paths of pests and diseases, increasing the hidden costs of agricultural production.
When the shock to the fertilizer supply chain meets the risk of an El Niño climate pattern, global agriculture is facing a dual squeeze of "rising costs" and "damaged output." For emerging market nations that are heavily dependent on fertilizer imports and have weaker climate adaptability, this combined shock is particularly devastating. It could directly trigger food security crises in local regions and transmit those shocks to global food prices through international trade networks.
Dual Energy and Food Shock: Stagflation Risks from the 1970s Returning?
The current macro environment is exhibiting dangerous characteristics similar to the stagflation period of the 1970s. The Iran war and the blockade of the Strait of Hormuz have disrupted the supply of millions of barrels of oil and natural gas daily, pushing Brent crude oil prices above $110. The surge in energy prices is not only directly raising the cost of fertilizer production and transport but is also triggering broad-based imported inflation.
Analysts warn that the dual supply shock to energy and food is recreating the macro risk that drove inflation in the 1970s. In this context, markets have fully priced out expectations for a Fed rate cut. Sovereign bonds, including U.S. Treasuries, are being sold off, driving yields sharply higher. Traditional safe-haven logic is failing, global stock markets are under pressure, gold is being sold for cash, and capital is flowing into cash, causing a synchronized sell-off across multiple asset classes.
If food prices rise substantially in the coming months due to a broken fertilizer supply chain and El Niño-related crop losses, global inflation faces the risk of a second wave. This would not only completely shut the door on central bank monetary easing but could also severely drag down global economic growth, plunging the macroeconomy into a classic stagflationary quagmire. For investors, hedging against the tail risks of a dual energy and food shock has become a core consideration that cannot be ignored in current asset allocation.
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