Strait of Hormuz Conflict Triggers Fertilizer Supply Shock and Raises Global Crop Cost Risks

Strait of Hormuz Conflict Triggers Fertilizer Supply Shock and Raises Global Crop Cost Risks

The escalating military confrontation around the Strait of Hormuz and the renewed closure of the waterway have sharply disrupted global fertilizer flows, tightening supply just as application seasons ramp up in key importing regions. Trade data and industry analysis indicate that nitrogen and phosphate prices are rising faster than most crop prices, eroding farm margins and heightening downside risks for 2026–27 production.

With maritime traffic through Hormuz still far below pre-war levels and a US naval blockade on Iran now in force, key fertilizer and feedstock exports from the Middle East are struggling to reach markets. Market participants report a growing affordability squeeze, especially in import‑dependent regions such as South Asia, Africa and Australia, with analysts warning that the impact on global food security could extend well beyond the duration of the conflict.

Introduction

The 2026 Iran–US/Israel conflict has turned the Strait of Hormuz into a high‑risk war zone, with Iran repeatedly closing the chokepoint and the United States imposing a naval blockade on Iranian ports. Recent incidents include attacks and warning fire on commercial vessels and a formal Iranian order to halt movements toward the strait, effectively paralysing normal shipping flows through one of the world’s most critical energy and bulk commodity corridors.

According to international financial institutions, Hormuz traditionally handles a large share of global oil, LNG and roughly one‑third of global fertilizer and helium trade, and tanker traffic has plunged since late February. Rabobank’s latest Semi‑annual Fertiliser Outlook, released today, concludes that the effective closure of Hormuz has removed a substantial volume of fertilizer and inputs from global trade, triggering a supply shock that will keep markets tight and volatility elevated through at least 2026.

🌍 Immediate Market Impact

War‑risk premiums and insurance costs for vessels transiting the Persian Gulf and Hormuz have surged, discouraging shipowners from lifting cargoes even when nominally permitted. The result is a steep drop in fertilizer shipments from major Middle Eastern producers of urea, ammonia, sulphur and phosphates, with some estimates suggesting a loss of several million tonnes of monthly export capacity when the strait is fully shut.

Rabobank reports that prices for nitrogen and phosphates have risen significantly since the conflict intensified, outpacing gains in most agricultural commodity benchmarks and pushing its fertiliser affordability index decisively into negative territory. Parallel spikes and volatility in fuel markets, as oil futures whipsaw on shifting signals about Hormuz access, are adding further cost pressure across input and freight markets.

📦 Supply Chain Disruptions

Logistics bottlenecks are most acute along east–west routes that normally rely on Gulf load ports. Maritime monitoring shows commercial traffic through Hormuz down by more than 90% at various points since March, with only a handful of Iran‑approved ships transiting under escort and with many cargoes diverted, delayed or cancelled. A US blockade now allows interception of Iran‑linked ships globally, further complicating routing and chartering decisions for cargoes originating in or transhipping through the region.

Industry and policy analysis indicate that the Middle East Gulf accounts for roughly 16–18% of global fertilizer exports and a substantial share of seaborne urea trade. With plants in the Gulf unable or unwilling to offer spot tonnes, large importers in South and East Asia, Africa and Latin America face elongated lead times and higher replacement costs. The IMF notes that shipping costs and insurance have jumped across the region and that maritime traffic through Hormuz remains “nearly at a halt”, underscoring the risk of prolonged disruption even if temporary ceasefires hold.

Downstream, cold chain operators and food importers report re‑routing via longer, more expensive paths and increased use of alternative ports, adding days or weeks to delivery times and increasing spoilage and working capital needs. In Australia, Rabobank highlights that the conflict has exposed structural dependence on imported urea and MAP, with local buyers seeing Middle East granular urea values nearly double year‑to‑date once currency moves are taken into account.

📊 Commodities Potentially Affected

• Urea and other nitrogen fertilizers – High reliance on Middle Eastern exports and rising gas feedstock prices are tightening global supply and driving sharp price increases.
• Phosphate fertilizers (DAP/MAP) – Saudi Arabia and other Gulf producers are key exporters; shipping constraints are lifting prices and reducing spot availability.
• Ammonia and sulphur – Critical feedstocks for fertilizer production face export bottlenecks, amplifying cost pressures for downstream producers in Europe, Asia and the Americas.
• Potash – Direct supply via Hormuz is less exposed, but substitution effects and broader fertilizer inflation are supporting firmer prices and risk premiums.
• Cereals (wheat, corn, barley) – Higher fertilizer and fuel costs are squeezing farmer margins; analysts already note higher wheat prices linked partly to Hormuz‑related input shocks.
• Oilseeds (soybeans, canola/rapeseed) – Producers may switch acreage toward crops perceived as more margin‑resilient under high input cost regimes, shifting regional oilseed balances.
• Rice and sugar – Input price inflation and potential export restrictions in key producing countries, particularly in Asia, could emerge if fertilizer shortfalls threaten domestic crop yields.

🌎 Regional Trade Implications

Import‑dependent countries in South Asia, the Middle East and Africa are among the most exposed. Analyses by multilateral agencies and NGOs warn that constrained fertilizer flows via Hormuz, combined with high fuel costs, are likely to depress application rates in fragile economies and lock in elevated food insecurity for 2026–27. South Asian fertilizer buyers, including India and Bangladesh, are facing higher landed costs and may seek larger volumes from alternative suppliers in North Africa, Russia and North America, subject to sanction and freight constraints.

Exporters able to ship from outside the Gulf—such as North African phosphate producers, Russian and North American nitrogen suppliers, and some Latin American producers—could gain market share and pricing power as buyers diversify away from Middle Eastern origins. However, limited spare capacity and logistical frictions mean these gains may be constrained in volume terms in the near term.

For grain and oilseed trade, higher input and bunker costs may alter traditional flow patterns, with some importers favouring shorter‑haul origins to reduce freight exposure. Australia’s anticipated shift in cropping patterns toward barley and canola, as farmers respond to elevated fertilizer prices, could reweight its export mix and impact competitive dynamics in Asian feed and veg‑oil markets.

🧭 Market Outlook

In the short term, fertilizer prices are likely to remain elevated and volatile, closely tracking developments around the US naval blockade, Iranian closure orders and any extension of current ceasefire arrangements. Rabobank expects fertilizer affordability to remain constrained through 2026, with only limited relief in the second half of the year even under an easing of tensions. Traders should anticipate intermittent price spikes around headline risk, shipping incidents and any signals of export curbs from key producing countries.

On the demand side, analysts warn of “demand destruction” as farmers cut application rates, delay purchases or shift to lower‑input crops. Such behavioural changes, if widespread, could depress fertilizer volumes beyond the conflict period but increase downside risk for future crop yields and stock‑to‑use ratios. Markets will closely monitor planting decisions in the Northern and Southern Hemispheres, policy moves on fertilizer subsidies and export controls, and any durable reopening of Hormuz to commercial shipping at scale.

CMB Market Insight

The Strait of Hormuz crisis has evolved from an energy shock into a broad‑based agricultural input shock, with fertilizer at its core. For commodity traders, importers and processors, the key strategic takeaway is that even a temporary military escalation in a critical transit corridor can trigger a multi‑season repricing of input risk, margins and ultimately food inflation.

Positioning strategies in the months ahead will need to balance near‑term supply scarcity in nitrogen and phosphates against the prospect of medium‑term demand rationing and potential policy intervention. Participants across the agri‑food value chain should stress‑test exposure to Middle Eastern fertilizer and fuel supplies, diversify origin portfolios where possible, and closely track evolving shipping, insurance and regulatory conditions linked to the Hormuz theatre.