Why Middle East Conflict Is Fracturing Global Fertiliser Supply

Geopolitical conflict is not just disrupting energy markets. It is quietly fracturing the raw chemical supply chains that dictate global food security, and the fertilizer sector is where the damage is now most visible.

As of late 2026, the near-total absence of bulk commercial shipping through critical Middle Eastern straits has triggered a severe sulphur supply deficit. That deficit is pushing global diammonium phosphate and monoammonium phosphate prices toward levels last seen during the 2022 fertilizer crisis.

The link between a shipping choke point and the price a farmer pays for phosphate is not obvious. It runs through chemistry, freight economics, and the hard limits of what agricultural buyers can afford.

This analysis unpacks the direct linkages driving today’s structural fertilizer inflation. It gives you a clear framework for understanding how regional shipping disruptions in the Middle East conflict are forcing systemic procurement shifts across the fertilizer market in key agricultural economies, from Turkey to Australia.

How sulphur economics dictate global phosphate pricing

To understand why a blocked strait guarantees farmgate inflation, start with what happens inside a phosphate plant.

Sulphur is the essential feedstock for producing sulphuric and phosphoric acid, the two intermediate chemicals that integrated producers convert into DAP and MAP fertilizers. When the price of sulphur rises, the variable cost base at every integrated phosphate producer rises with it. That cost increase then lifts the marginal cost of producing each tonne of finished fertilizer.

This is a mechanical link, not a market sentiment story. Higher sulphur means higher phosphate, and the pass-through happens whenever markets are tight enough to allow it.

The nature of the sulphur shortage changed over two years. In 2025, the deficit was demand-driven, fuelled by surging appetite from nickel producers in Indonesia and copper producers across sub-Saharan Africa.

The 2026 crisis accelerated a tightening cycle already underway; the sulphur supply dynamics that pushed producers toward record procurement costs in 2025 established the fragile baseline from which the Hormuz shock then propagated.

In 2026, it became a supply-side crisis. Vessel strikes on shipping routes choked off flows through the Strait of Hormuz, which in normal conditions handles roughly half of all globally traded sulphur. When half the world’s traded supply of a critical feedstock cannot move, the price response is immediate and severe.

The benchmarks tell the story. The third quarter 2026 Tampa sulphur settlement reached a record high of $705 per long tonne delivered, a level that prompted immediate cutbacks in phosphate fertilizer production. US Gulf Coast export prices climbed even more steeply, peaking at $1,175 per tonne FOB in August 2026.

The surging baseline cost of sulphur tells you something important about the current rally. The price of phosphate is being driven by unavoidable production economics, not by producer opportunism. That distinction matters for how you position: until freight routes normalise, the cost floor stays elevated, and so will retail prices. Tracking the upstream sulphur market gives buyers and analysts a leading indicator of where phosphate prices are heading before retail assessments catch up.

Tracing the trade route collapse and freight squeeze

The chemistry sets the cost floor. The shipping data shows why that floor keeps rising.

Over the course of 2026, the physical movement of bulk commodities through the region’s two most important straits collapsed. This is not a story of slower flows or higher costs alone; it is the near-disappearance of commercial bulk traffic on routes the fertilizer trade depends on.

The dual strait bottleneck

World Trade Organization (WTO) Data Lab tracking, which follows AIS-traceable bulk flows across energy, sulphur, and fertilizer cargoes, shows movement through the Strait of Hormuz sitting at or near zero through mid-to-late 2026. This is the artery that normally carries around half of the world’s traded sulphur, and it has effectively closed to the vessels that matter.

Hormuz transit data from 2026 shows daily dry bulk crossings fell by nearly 89% during the peak disruption window, a collapse in throughput that translated directly into the sulphur supply shortfall driving current phosphate cost inflation.

The Bab el-Mandeb strait, the western gateway toward European and African markets, tells a parallel story. Kpler ship-tracking data through September 2026 shows daily traffic falling to roughly 22 to 26 vessels per day, against a pre-crisis average near 70 vessels per day.

Together, these two bottlenecks trap Middle Eastern supply at both ends. Product that cannot exit through Hormuz cannot easily reroute through Bab el-Mandeb either, leaving the region’s sulphur and phosphate isolated from the importing markets that need it.

For the handful of ships still willing to make the passage, freight costs have compounded the squeeze. QatarEnergy held its August QSP sulphur price at $890 per tonne FOB, but freight to China was estimated at $140 to $155 per tonne, pushing landed CFR levels past $1,030 per tonne. The freight premium alone now adds more to the delivered price than the entire cargo cost during quieter periods.

The persistence of this collapse carries a clear message for anyone managing a fertilizer supply chain. Just-in-time procurement, built on the assumption that cargoes will always be available at short notice, no longer holds. You now have to build a permanent geopolitical risk premium into freight budgets and accept that shipping data, not price screens, is the most accurate real-time gauge of what supply is actually reachable.

The affordability threshold and demand destruction in Turkey

Macro logistics explain the pressure. Turkey shows what happens when that pressure meets a buyer who simply cannot pay.

There is a well-documented ceiling in the phosphate market. When DAP and MAP CFR prices push sustainably above roughly $800 per tonne, agronomists and the International Fertilizer Association warn that farmers stop absorbing the cost. They cut application rates, switch to cheaper nutrient sources, or abandon purchases entirely.

Turkey crossed that line in 2026, and the response was not a slowdown. It was a withdrawal.

The Argus DAP Turkey CFR assessment rose from $716 per tonne at the start of 2026 to above $900 per tonne by early June 2026. Once the imported price sat consistently above the dollar-equivalent of the bagged domestic price, buying DAP from abroad made no economic sense, and Turkish importers stepped back.

The statistical fallout is stark:

• Turkish DAP arrivals during April to July 2026 fell to just 43% of the average for the same period across the preceding three years.
• Morocco’s OCP, which historically supplied around 57.7% of Turkey’s DAP imports between 2023 and 2025, exported zero DAP to Turkey via Jorf Lasfar from March 2026 onward.
• The anticipated seasonal demand pickup for the September to October vegetable season failed to materialise, removing a normally reliable buying window.

Morocco’s OCP export strategy had positioned the group as the dominant swing supplier to emerging-market phosphate buyers through 2023-2025, which is precisely why its sudden withdrawal from the Turkish market in early 2026 removed not just volume but the pricing anchor that had kept CFR assessments within buyers’ reach.

With imports priced out, Turkish farmers redirected consumption toward domestically manufactured volumes, forecast to stay flat at roughly 517,000 tonnes for 2026, and toward lower-grade substitutes such as single superphosphate, NP compounds, and NPK blends. Most distributors expect overall phosphate application to fall substantially for the year.

Turkey’s exit is a leading indicator, and that is the read you should take from it. When a significant importing nation withdraws entirely rather than trimming volumes, global prices have crossed from margin expansion into demand destruction. Other emerging agricultural economies operating near the same affordability ceiling are the ones to watch next, because Turkey has just demonstrated where the tipping point actually sits.

Procurement paralysis and supply chain rigidities in Australia

Turkey shows demand destruction through affordability. Australia shows a different failure: buyers who might be able to pay but cannot easily switch where they buy from.

Australian agricultural buyers preparing for the 2027 winter cropping cycle face rising unease over phosphate availability and price. The first MAP and DAP cargoes of the season are conventionally booked for November loading, but a combination of price pressure and uncertain market conditions has caused many buyers to defer those decisions. Some buyers are locking in early 2027 cargoes now to manage risk; others are waiting until closer to application.

The price backdrop explains the hesitation. Argus assessed MAP at $802 to $836 per tonne FOB Saudi Arabia in late September 2026, a 28% increase compared with early November 2025.

The deeper problem is not price. It is rigidity. Australia’s phosphate imports have long concentrated in the Middle East, and in 2025 roughly 30% of the country’s MAP and DAP imports came from Saudi Arabia via the Strait of Hormuz. That concentration reflected geographic proximity to Indian Ocean shipping lanes, established offtake contracts, and product specifications matched to Australian agronomic needs.

Those Saudi shipments have now stalled. The most recent fertilizer import from Saudi Arabia arrived in Australia in late July 2026, and escalating tension around Bab el-Mandeb has closed off the western-port workaround, with no confirmed vessels using that routing.

Pivoting to Morocco or China sounds simple on a spreadsheet. In practice, three barriers block a fast switch:

1. Longer voyage times via the Cape of Good Hope, which raise freight costs and add transit risk on every cargo.
2. Different nutrient concentrations and handling characteristics from alternative origins, which require re-qualification by local blending plants before the product can be used.
3. Australia’s relatively small absolute market volume, which limits its bargaining power to secure new long-term offtake in an already tight global market.

The lesson here is direct. The inability of Australian buyers to reroute quickly proves that supply chain resilience depends on pre-qualifying alternative blends before a crisis hits, not during one. Geographic diversification looks easy as a line item, but real-world agronomic and logistical constraints are what determine whether it actually works when your primary route closes.

Pricing in a high-friction procurement regime for 2027

The market is split on what all of this means. One camp reads the 2026 spikes as a pure geopolitical shock: reopen the straits, restore output, and prices normalise. The other sees a structural shift, pointing to an unbroken run of crises since 2020, from COVID-era freight snarls to the 2021-2022 fertilizer shock to the Russia-Ukraine conflict and now the Middle East, as evidence of a permanently higher-cost regime. Long-term World Bank data supports the structural view, showing phosphate prices sitting well above pre-2010 norms.

The phosphate price outlook into 2027 depends heavily on whether the freight disruption is treated as a temporary shock in forward contracts or as a structural regime shift, and those two assumptions produce materially different hedging and procurement positions for import-dependent buyers.

The precedent worth remembering is 2021-2022, when global DAP prices surged past $1,000 per tonne FOB US Gulf, triggering emergency subsidies, reduced application, and multi-season yield damage. Prolonged sulphur-driven cost inflation could recreate exactly that outcome.

The clearest strategic risk in this environment is continued reliance on just-in-time procurement. When a single choke point can remove half the world’s traded sulphur overnight, holding no buffer is not efficiency; it is exposure.

For import-dependent markets, the adaptation is not another round of emergency subsidies. It is diversifying supply routes across Middle Eastern, North African, and Asian origins, building local blending capacity, and treating fertilizer security with the same contingency planning applied to energy.

For readers wanting to move from diagnosis to response, our full explainer on fertiliser security resilience examines the specific supply diversification, buffer-stock, and blending-capacity investments that import-dependent agricultural economies have used to reduce single-origin exposure.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions. Past performance does not guarantee future results, and financial projections are subject to market conditions and various risk factors.