Oil crisis deepens: Iran war drains reserves and hits global agriculture hard
Shrinking oil inventories drive price spikes and disrupt global supply chains, putting U.S. and Latin American agriculture under growing pressure.
In May 2026, global oil reserves are falling at a record pace due to the Iran conflict, increasing the risk of supply shortages and extreme price spikes, with direct consequences for agriculture in the U.S. and Latin America through higher energy, input, and logistics costs.
The disruption centered around the Strait of Hormuz has already removed more than one billion barrels from the global system, sharply reducing the buffer that typically stabilizes energy markets. According to Morgan Stanley estimates, inventories declined by roughly 4.8 million barrels per day, marking one of the fastest drawdowns on record.
Energy shock puts agriculture under pressure
For agriculture, the impact is immediate and structural. Farming systems rely heavily on oil through diesel fuel, nitrogen fertilizers, and transportation, making the sector highly sensitive to price volatility.
Rising diesel costs are already affecting farm operations and grain logistics across major exporting regions. In both the U.S. and Latin America, producers face a scenario where profit margins could tighten, particularly as global competition intensifies.
In addition, oil is a key input in fertilizer production. Sustained high energy prices could translate into more expensive inputs for upcoming planting seasons, influencing acreage decisions and yield potential.
A market nearing critical limits
The issue goes beyond declining inventories. The global energy system requires a minimum level of reserves to operate efficiently, meaning that supply stress emerges well before stocks reach zero.
Current oil inventories are near their lowest levels since 2018, with Asia showing early signs of stress. Some countries could face fuel shortages within weeks, while Europe is experiencing a rapid decline in jet fuel inventories ahead of peak travel season.
Meanwhile, the United States - often considered the world's supplier of last resort - has also drawn down its reserves to historically low levels, limiting its ability to stabilize global markets.
Inflation, logistics, and export risks
Oil prices have surged above $120 per barrel, fueling global inflation and increasing transportation costs. For agriculture, this translates into higher export expenses for key commodities such as corn, soybeans, and beef.
Volatility in energy markets may also disrupt supply chains, affecting ports, shipping availability, and access to critical inputs. In a system that depends on efficiency and timing, these disruptions can quickly translate into significant economic losses.
A turning point for global agriculture
Beyond the short term, the crisis raises structural questions. Even if the conflict eases, markets are expected to enter a prolonged phase of inventory rebuilding, keeping upward pressure on prices.
This environment could accelerate trends such as energy efficiency in farming, increased adoption of biological inputs, and reduced dependence on fossil fuels. However, in the near term, producers in both the U.S. and Latin America must navigate rising costs and heightened uncertainty.
The current energy crisis underscores a key reality: oil geopolitics remains a decisive force shaping global food security and agricultural competitiveness.
