The Strait of Hormuz: A Food Chokepoint
The West has treated the Strait of Hormuz as an energy problem. The fertiliser supply chain suggests the real exposure runs deeper.
Key Takeaways
- The Persian Gulf produces a dominant share of the world's traded nitrogen fertiliser. The Strait of Hormuz is its only exit route to global markets.
- Synthetic fertiliser sustains roughly half the global population. A disruption at the Strait is a disruption to food supply, not a secondary energy effect.
- South Asia, sub-Saharan Africa, and MENA are the most exposed regions. All three are import-dependent, with no domestic production buffer worth speaking of.
- The mechanism is not theoretical. When European gas prices spiked in 2021-22, fertiliser plants cut output by up to 70 percent. A physical supply disruption is faster and harder to recover from than a price shock.
- Russia sits outside this exposure entirely. It is a major fertiliser exporter with no Hormuz constraint, and its energy revenues are recovering on higher oil prices.
Assumptions
The analysis assumes current disruption to Gulf shipping persists long enough to affect the 2026 northern hemisphere planting cycle. A short-duration disruption, measured in weeks, would be absorbed by traders and stockpiles before reaching the field.
Geographic Logic
The Persian Gulf's importance to global food production is structural. Saudi Arabia, Qatar, Iran, and the UAE produce ammonia and urea at scale because they sit on vast natural gas reserves. That gas is not just the energy source for fertiliser manufacturing. It is the chemical feedstock. Natural gas accounts for between 70 and 90 percent of production costs. The Strait of Hormuz is 33 kilometres of navigable water. Every tonne of urea, ammonia, and sulphur produced in the Gulf transits through it before reaching the ocean.
The five corridors on the map show where that supply lands. India sources more than 40 percent of its nitrogen and phosphate fertiliser from the Middle East. Brazil, one of the world's largest agricultural exporters, sources nearly half its fertiliser through the Strait. Sub-Saharan Africa imports over 80 percent of its fertiliser, primarily from the Gulf. These are not marginal flows. They are the supply lines on which the food production of the developing world depends.
Current Situation
Talks between the US and Iran in Islamabad ended this morning without a deal. Iran's state media confirmed no further negotiations are planned, and that the Strait of Hormuz will remain closed until Washington agrees terms. South Asian countries are already reporting gas curtailments from Middle Eastern suppliers. India, Pakistan, and Bangladesh are the most immediately exposed. The planting window for 2026 is open now. Fertiliser that is not in the ground by the end of May is not going into this season's crops. In sub-Saharan Africa the position is structurally worse. Fertiliser prices in Kenya rose over 150 percent between 2020 and 2022 following the Ukraine shock. The current situation arrives on top of that baseline. There is very little margin left.
The historical sequence from food shock to displacement is well established. The Sahel drought cycles and Syria's agricultural collapse before 2011 both followed a recognisable pattern: yield failure, price shock, rural collapse, movement of people. The scale of import dependency visible on this map suggests that a sustained fertiliser supply disruption could produce displacement events that dwarf anything the Syrian crisis generated. Western political systems have already demonstrated, repeatedly, that they have no coherent answer to large-scale migration pressure. That is the strategic endpoint of the vulnerability this map describes. It is worth being clear-eyed about it.
The duration question remains open. No external analyst can say with confidence when or whether Gulf supply normalises.
What to Watch
- If Gulf LNG shipments to South Asia are suspended beyond 60 days, watch for fertiliser rationing in Bangladesh and Pakistan before the 2026 planting window closes
- If fertiliser prices breach 2022 peak levels, watch which governments in sub-Saharan Africa can fund emergency import subsidies and which cannot
- If Iran signals willingness to negotiate Strait access, watch whether food security rather than oil becomes the operative leverage
The Strait of Hormuz: A Food Chokepoint
The West has treated the Strait of Hormuz as an energy problem. The fertiliser supply chain suggests the real exposure runs deeper.
Key Takeaways
- The Persian Gulf produces a dominant share of the world's traded nitrogen fertiliser. The Strait of Hormuz is its only exit route to global markets.
- Synthetic fertiliser sustains roughly half the global population. A disruption at the Strait is a disruption to food supply, not a secondary energy effect.
- South Asia, sub-Saharan Africa, and MENA are the most exposed regions. All three are import-dependent, with no domestic production buffer worth speaking of.
- The mechanism is not theoretical. When European gas prices spiked in 2021-22, fertiliser plants cut output by up to 70 percent. A physical supply disruption is faster and harder to recover from than a price shock.
- Russia sits outside this exposure entirely. It is a major fertiliser exporter with no Hormuz constraint, and its energy revenues are recovering on higher oil prices.
Assumptions
The analysis assumes current disruption to Gulf shipping persists long enough to affect the 2026 northern hemisphere planting cycle. A short-duration disruption, measured in weeks, would be absorbed by traders and stockpiles before reaching the field.
Geographic Logic
The Persian Gulf's importance to global food production is structural. Saudi Arabia, Qatar, Iran, and the UAE produce ammonia and urea at scale because they sit on vast natural gas reserves. That gas is not just the energy source for fertiliser manufacturing. It is the chemical feedstock. Natural gas accounts for between 70 and 90 percent of production costs. The Strait of Hormuz is 33 kilometres of navigable water. Every tonne of urea, ammonia, and sulphur produced in the Gulf transits through it before reaching the ocean.
The five corridors on the map show where that supply lands. India sources more than 40 percent of its nitrogen and phosphate fertiliser from the Middle East. Brazil, one of the world's largest agricultural exporters, sources nearly half its fertiliser through the Strait. Sub-Saharan Africa imports over 80 percent of its fertiliser, primarily from the Gulf. These are not marginal flows. They are the supply lines on which the food production of the developing world depends.
Current Situation
Talks between the US and Iran in Islamabad ended this morning without a deal. Iran's state media confirmed no further negotiations are planned, and that the Strait of Hormuz will remain closed until Washington agrees terms. South Asian countries are already reporting gas curtailments from Middle Eastern suppliers. India, Pakistan, and Bangladesh are the most immediately exposed. The planting window for 2026 is open now. Fertiliser that is not in the ground by the end of May is not going into this season's crops. In sub-Saharan Africa the position is structurally worse. Fertiliser prices in Kenya rose over 150 percent between 2020 and 2022 following the Ukraine shock. The current situation arrives on top of that baseline. There is very little margin left.
The historical sequence from food shock to displacement is well established. The Sahel drought cycles and Syria's agricultural collapse before 2011 both followed a recognisable pattern: yield failure, price shock, rural collapse, movement of people. The scale of import dependency visible on this map suggests that a sustained fertiliser supply disruption could produce displacement events that dwarf anything the Syrian crisis generated. Western political systems have already demonstrated, repeatedly, that they have no coherent answer to large-scale migration pressure. That is the strategic endpoint of the vulnerability this map describes. It is worth being clear-eyed about it.
The duration question remains open. No external analyst can say with confidence when or whether Gulf supply normalises.
What to Watch
- If Gulf LNG shipments to South Asia are suspended beyond 60 days, watch for fertiliser rationing in Bangladesh and Pakistan before the 2026 planting window closes
- If fertiliser prices breach 2022 peak levels, watch which governments in sub-Saharan Africa can fund emergency import subsidies and which cannot
- If Iran signals willingness to negotiate Strait access, watch whether food security rather than oil becomes the operative leverage