// analysis
Hormuz: five ships and the crop calendar
A shipping corridor can move fertilizer while farms still miss out. How nutrient supply, credit and crop calendars shape the agricultural risk.
Five ships a day is the scale of the passage proposed by the UN official overseeing efforts to move fertilizer through the Strait of Hormuz. Speaking to Reuters in Bangkok on 14 October, UNOPS Executive Director Jorge Moreira da Silva said a mechanism could be activated within seven to ten days of an agreement between Washington and Tehran. At the time of the interview, that agreement was still missing. He argued that five daily sailings could sustain fertilizer supplies to countries in critical need. [S01]
The warning acquired a more immediate dimension the following day. Alvaro Lario, president of the International Fund for Agricultural Development, told Reuters that the disruption was beginning to show up in harvests. He described more cautious planting decisions and reduced fertilizer use. It is a significant assessment from the agency’s leadership, although the report does not provide country-level estimates separating the effect of Hormuz from other pressures on yields. [S16]
A protected passage could remove a major obstacle. Between a ship clearing the strait and a crop receiving the nutrients it needs, however, lies a chain of manufacturing, financing and distribution. The contents of the hold matter as much as its weight. So do the buyer’s access to credit and the stage of the crop when the shipment arrives. The most serious risk emerges where these constraints coincide, even when the international fertilizer price has stopped rising.
Our investigation of shipping chokepoints and inventories follows goods in transit and their financing. Fertilizer adds a crop-specific deadline: supplies need to arrive during a useful application window.
A shipping corridor needs a functioning chain ashore
The task force announced in March brings together UNOPS, UN Trade and Development, the International Maritime Organization and the International Chamber of Commerce. Its humanitarian purpose is pursued through the movement of commercial fertilizer and related raw materials. Buyers still need to finance those cargoes. Facilitating navigation and distributing free inputs are very different operations. [S18]
UNOPS described the proposed mechanism in July as temporary and limited, with vessel registration, transit coordination, prioritization, monitoring and verification. The plan outlined to Reuters in October adds a coordination centre in Oman and UN monitors checking loading at Gulf ports, followed by tracking during the voyage. The purpose is to make movements identifiable and acceptable to the parties, reducing the uncertainty that obstructs commercial traffic. [S02][S01]
Such an arrangement addresses an essential constraint while leaving insurance, payment and distribution to be resolved. ICC has separately advocated clearer rules for eligible voyages, an insurance facility and financing for importers, distributors and farmers. Those are proposals from a body representing business, rather than evidence that a fully funded system is already in place. [S15]
Method and scope
Schematic with no time or capacity scale. Seven to ten days and five daily ships are conditional statements by the UNOPS director on 14 October. They provide no verified cargo tonnage, hectares served or deadline for delivery to farms.
The five-ship figure becomes meaningful only when accompanied by cargo information. Vessel capacity, loading rates, products and destinations would all be needed before translating sailings into hectares served. The seven-to-ten-day estimate concerns activation after an agreement. The voyage to the importing country, any further processing and delivery to agricultural districts come later. None of those downstream stages has a verified duration in the public description of the plan. [S01]
Urea, phosphates and sulfur serve different needs
Fertilizer is a broad commercial category. Urea supplies nitrogen, while ammonium phosphates supply both nitrogen and phosphorus. Crops need the relevant nutrient, rather than an interchangeable quantity of material. The industries producing those nutrients also share inputs, allowing a disruption in the Gulf to affect plants well beyond it. [S05][S08][S09]
In the conventional gas-based route, natural gas provides hydrogen and process energy to make ammonia from nitrogen in the air. Ammonia then feeds the production of several fertilizers, including urea. Coal offers another industrial route. The ability to source nitrogen elsewhere therefore depends on energy resources and installed manufacturing capacity, as well as access to ships. [S05]
Sulfur introduces a less visible connection. Industrial supplies of elemental sulfur are recovered during oil refining and natural-gas purification. Converted into sulfuric acid, it is used to process phosphate rock into phosphoric acid. Adding ammonia produces fertilizers such as diammonium phosphate, or DAP. A producer outside the Gulf can consequently have phosphate rock and willing customers while remaining exposed through its sulfur purchases. [S04][S06][S07][S08]
Our analysis of sulfur across fertilizers and nickel follows those industrial uses and their shared dependencies.
Method and scope
Simplified industrial process with no proportional flow widths or market shares. Arrows indicate inputs and transformations, not chemical yields or available volumes. Gas is not the only ammonia feedstock route.
Counting tonnes requires care even after manufacturing is complete. One hundred tonnes of standard-grade urea contain 46 tonnes of nitrogen. The same weight of DAP 18-46-0 contains 18 tonnes of nitrogen, alongside 46 tonnes of available phosphate conventionally stated as P₂O₅ equivalent. The second number does not mean 46 tonnes of elemental phosphorus. A heavier shipment need not provide more of the nutrient that a particular crop requires. Its usefulness depends on composition and the condition of the soil. [S08][S09]
For a passage with limited capacity, this creates a practical allocation problem. Shipping sulfur may support fertilizer plants downstream, but it leaves an industrial step to complete before nutrients reach farms. Shipping urea can address a nitrogen requirement more directly. Choosing between them requires information about inventories, processing capacity and the crop seasons each cargo would serve. A universal ranking of “essential” fertilizer cargoes would miss those differences.
Urea has retreated while DAP has held up
Recent prices challenge the idea of a uniform shortage. The World Bank’s Pink Sheet, released on 2 October, records average urea prices falling from $693.5 a tonne in the second quarter to $399.2 in the third, a calculated decline of 42.4%. DAP moves in the opposite direction, from $759.5 to $791.8, an increase of 4.3%. These are quarterly averages through September, not market quotes for 16 October. [S03]
Method and scope
Nominal dollars per product tonne. Official quarterly means: urea Q2 693.5 and Q3 399.2; DAP Q2 759.5 and Q3 791.8. Calculation: (Q3/Q2 − 1) × 100, giving −42.4% and +4.3%. FOB Middle East and US Gulf are different delivery bases. July–September monthly points are not current market quotes.
The delivery bases also matter. Despite the legacy series label “Urea (E. Europe)”, the World Bank’s notes define its benchmark as spot prilled urea, free on board in the Middle East. DAP is quoted free on board in the US Gulf. Neither measures the bill at the farm gate. The comparison reveals different price paths for different products and locations, rather than the relative cost of an identical nutrient delivered to the same buyer. [S03]
Prices can fall because supplies recover, inventories are released or buyers postpone purchases. They can also fall when customers lose the ability to pay. ICC’s policy note explicitly discusses demand that has been abandoned or deferred. Treating those categories as equivalent would turn a delayed purchase into a permanent loss of fertilizer application. Establishing which has occurred requires evidence from the use of inputs, rather than an export price alone. [S15]
AMIS adds a useful recent qualification. Its October monitor reports nitrogen prices firming in September, continuing affordability constraints on phosphate demand and a more comfortable potash market. The monitor uses nutrient-tonne measures and benchmark baskets different from the World Bank’s product-tonne series. Together, the sources show why each market needs to be followed separately, and why urea’s large quarterly decline does not imply an uninterrupted fall from month to month. [S13]
Upstream dependencies follow alternative suppliers
An IFPRI analysis published on 18 September offers a view of the trade adjustment behind these prices. Its authors reconstruct flows for the first six months of 2026 using declarations from 77 importing countries for nitrogen fertilizers. They also estimate sulfur trade through mirror data, without stating a separate reporter count for that series. This “mirror” approach helps estimate exports from suppliers whose own reporting is unavailable or incomplete. It describes a monitored trade universe, with coverage limitations, rather than a census of every international cargo. [S04]
Within that universe, nitrogen-fertilizer exports measured in nitrogen equivalents decline by about 9% from January–June 2025. Elemental sulfur exports fall from approximately 13.5 million tonnes to 9 million tonnes, a reduction of about one-third. The contrast points to uneven adjustment across the two supply chains. Constraints outside the Gulf also contribute to the sulfur decline, so attributing the entire reduction to Hormuz would overstate the evidence. [S04]
Method and scope
IFPRI-attributed estimates for January–June 2026 against 2025. Each family has its own 2025 base of 100: about 91 for nitrogen and 67 for sulfur. Sulfur falls from approximately 13.5 to 9 million material tonnes; nitrogen uses nutrient equivalents. The 77 reporters explicitly concern nitrogen, with no separate sulfur reporter count stated. The complete proprietary customs universe was not independently reconstructed.
Increased nitrogen shipments from alternative suppliers show that trade is adapting. They reveal less about final use. A country may import more to replace lost domestic production, rebuild inventories or prepare for a crop season. Lower imports can reflect sufficient stocks, a change in sourcing that the data capture imperfectly, or postponed purchasing. Customs figures cannot by themselves establish fertilizer application, still less the resulting yield. [S04]
Sulfur deserves particular attention because switching the supplier of finished fertilizer can preserve the same upstream exposure. Buying phosphate from a more distant plant avoids a particular shipping route, but offers less protection when that plant is also struggling to secure sulfur. The customer encounters the limiting input through another branch of the chain. Industrial chemistry explains that possibility; the trade evidence makes it plausible without establishing the operating rate of every affected plant. [S04][S07][S08]
Bangladesh is already financing the next crop
The agricultural calendar turns a delivery problem into a production risk. FAO warned on 7 May that delayed fertilizer could miss a useful application stage and affect subsequent harvests. There is no single global deadline: it depends on the crop, its development, weather and soil fertility. A late shipment can retain value without being equally useful for the operation or season it was originally intended to support. [S10][S08]
Bangladesh provides a concrete example of the financing needed to bridge that gap. On 26 June, the World Bank approved a $300 million food-security project intended to finance imports of 600,000 tonnes of fertilizer, half of it urea. The announcement identifies the Aman season, July–October 2026, and Boro, October 2026–April 2027. Those are the seasons supported by the programme, rather than precise planting dates for every rice field. [S11]
Method and scope
Project approved on 26 June: a US$300 million envelope targeting 600,000 fertilizer tonnes, including 300,000 tonnes of urea. Announced support periods: Aman July–October 2026 and Boro October 2026–April 2027. Dividing the envelope by target tonnage would not establish a fertilizer price. No delivered or applied volume is certified.
By mid-October, the programme sits at the junction between the two seasons. Funding is meant to prepare one crop while the other is under way. Assessing delivery would require import contracts, unloading dates and records of supplies reaching distributors and farms. The June announcement establishes a financing envelope and targets. It does not certify that the intended volumes have already arrived or been applied. [S11]
Current harvest assessments need to be placed on the same calendar. FAO’s 4 September country brief still forecasts above-average paddy production in Bangladesh and notes that the 2026 Boro harvest finished in June. That completed crop is distinct from the 2026–2027 Boro season the financing is intended to support. Relatively favourable past production can coexist with difficult purchasing decisions for the next crop. [S12][S11]
The timing gap also exists within countries. A farmer who bought early may have adequate stocks, while another who relies on the proceeds of the preceding harvest is still waiting to purchase. National import dependence is a useful starting point. Where the stocks are held, and when individual growers can afford to buy them, move the analysis closer to actual agricultural exposure.
Credit determines access to fertilizer
The economics of fertilizer begin before application. A farmer weighs its cost against the extra crop revenue it may generate, subject to the cash available to make the purchase. AMIS tracks fertilizer-to-crop price ratios and financing conditions for precisely this reason. A tonne that becomes cheaper in dollars can remain hard to afford when the local currency weakens, freight rises or credit becomes scarcer. [S13]
An illustrative calculation makes the transmission clear without assigning it to a fictional country. Suppose a fertilizer’s dollar price rises by 25%, while buying a dollar costs 10% more in local currency. Excluding all other costs, the local price is multiplied by 1.25 and then by 1.10, an increase of 37.5%. An unchanged purchasing budget now buys 72.7% of the original volume, a reduction of 27.3%.
Method and scope
Entirely hypothetical inputs: dollar price +25%, local cost of one dollar +10%, purchasing budget unchanged. Local unit cost: 1.25 × 1.10 = 1.375. Purchasable quantity: 1/1.375 = 72.7% of the original volume, a 27.3% reduction. Freight, taxes, subsidies and credit costs excluded. No numerical crop-yield response is estimated.
This is purchasing-power arithmetic, with explicit assumptions. It provides no automatic estimate of lost output. Soil reserves, earlier applications, placement and the crop’s response all affect the yield obtained from an additional unit of fertilizer. Research on phosphorus shows that the response to application depends on the nutrient already available in the soil. Cutting an excessive dose and missing an essential one have different consequences. [S08]
A subsidy that holds down the farmer’s price can transfer part of the shock to the public budget. External finance can in turn ease that constraint. The timing remains important: funds must be available early enough for orders and distribution. Money arriving after the useful application window can still support incomes or a later crop, but cannot necessarily recover its original value for the season that has passed.
France’s official release of 15 October says the G7 has mobilized US$2.5 billion since the Middle East crisis began, almost entirely as grants, under its fertilizer and food-systems resilience action plan, particularly in Africa. This is a reported cumulative amount, with no basis for treating it as wholly new funding on 15 October. The release provides no country-by-country or instrument-by-instrument disbursement schedule. [S17]
It would be premature to add that reported amount to the Bangladesh programme: their scopes and any overlaps would first need to be checked. Instead, the two announcements illustrate different levels of the response. One reports cumulative collective funding; the other identifies a national programme, a target quantity and the crop seasons it is intended to serve. Monitoring needs to move from those commitments to purchasing, and then to usable deliveries. [S17][S11]
The 81% increase rests on a severe scenario
Recent coverage cites a possible 81% increase in cereal prices from a study commissioned by ICC. The organization’s 18 August press release describes that figure relative to 2020 levels. Its most severe scenario assumes nitrogen-fertilizer costs triple in 2026 and remain elevated, alongside shocks to energy, transport and other inputs. These are stylized cost assumptions, rather than a result calculated from the proposed five daily ships. [S14]
ICC identifies the work as an early-stage preprint that has not been peer reviewed. The full manuscript could not be accessed for this investigation; the assumptions described here come from the sponsor’s release and methodological notes. Those notes also describe model results measured against a no-shock reference scenario. Each figure’s exact comparison therefore needs to be checked before it is carried into a new claim. [S14]
Such a simulation can explore the consequences of a persistent shock. It does not establish an 81% rise from October’s market prices or attribute the entire increase to the strait’s disruption alone. The distinction between a modelling exercise and a dated forecast matters particularly when observed urea prices have already changed direction so sharply. [S14][S03]
Our analysis of wheat between Hormuz and the Bosphorus also separates cereal availability from the ability to buy and transport it.
A comfortable global balance can conceal vulnerable farms
Agricultural evidence still offers substantial reasons to resist a generalized-shortage scenario. AMIS’s October monitor describes global supply prospects as generally favourable, despite downward revisions for some crops and weather risks. Alternative suppliers, inventories and scope to adjust fertilizer use can absorb part of the disruption. Their effectiveness varies with the input, the soil and the buyer’s financial capacity. [S13][S04][S08]
A relatively comfortable global balance is nevertheless a poor measure of every household’s access to food. FAO’s Bangladesh brief combines an above-average paddy production forecast with a projected deterioration in food security, linked in part to purchasing power and flood damage. Adequate national output can coexist with severe difficulties paying for food locally. [S12]
The evidence points toward specific purchasing constraints and agricultural windows, rather than a uniform collapse in harvests. The risk is greatest where a grower reaches a sensitive crop stage with inadequate stocks, a poorly suited replacement and no financing available. Supplies secured early enough, soil reserves that can cushion reduced application or accessible seasonal credit can interrupt that transmission. [S10][S08][S13]
As of 16 October, the sources reviewed offer no public confirmation that the proposed UN passage has been activated. Its introduction would be an important advance. Its agricultural impact will need to be assessed beyond the number of crossings: which products and nutrients move, where they go, when distributors can supply them, what growers pay, and whether application takes place while it remains useful. Five daily ships could reopen a route. Their contribution to the harvest depends on the chain waiting for them ashore. [S01][S02][S15]
Sources and method
Documentary investigation with an evidence cutoff of 16 October 2026. World Bank prices run through September; IFPRI’s reconstructed trade covers the first half of the year. Recent statements, financing commitments, programme targets and scenarios are distinguished from realized outcomes. Calculation formulas and assumptions appear in the native method notes below the figures. Trade estimates remain attributed to IFPRI: the complete proprietary customs universe was not independently reconstructed. No original interviews or access to commercial contracts are claimed.
Reuters / Internazionale · Failure to activate Hormuz fertilizer plan could trigger food crisis, UN official says · 2026-10-14
Reuters interview dated 14 October, read in the full 15 October republication. Five daily sailings and activation within seven to ten days remain conditional statements by the UNOPS director, without demonstrated tonnage or a farm-delivery deadline. Direct Reuters access was unavailable.
UNOPS · It is time for a confidence-building Operational Mechanism for the Strait of Hormuz · 2026-07-24
UNOPS statement of 24 July: a temporary, limited mechanism with registration, coordination, prioritisation and verification. Operation depends on the parties’ consent; this is a proposal rather than an activation record.
Banque mondiale / World Bank · Commodity Price Data (The Pink Sheet), October 2026 · 2026-10-02
Official 2 October release, table on page 2 and delivery-basis notes on page 3 visually checked. Nominal dollars per product tonne, quarterly and monthly averages through September. Urea is prilled spot FOB Middle East; DAP is spot FOB US Gulf. Neither series measures farm-gate cost.
IFPRI · How are fertilizer markets coping with the continued closure of the Strait of Hormuz? · 2026-09-18
IFPRI analysis dated 18 September, covering January–June 2026 against the same period of 2025. Its 77 importing reporters explicitly concern nitrogen fertilizers; a separate sulfur reporter count is not stated. Mirror estimates and different nutrient/material units remain attributed to IFPRI. The full underlying Global Trade Atlas universe is unavailable.
AIE / IEA · Ammonia Technology Roadmap, Executive Summary · 2021-10-11
The 2021 IEA executive summary supports the stable industrial mechanism and gas/coal feedstock routes. Historical production shares are not presented as current observations.
USGS · Statistical Compendium, Sulfur · date non affichée
USGS describes recovered sulfur from refining and natural-gas purification. The compendium’s old statistical series are not used as current market shares; IFPRI provides recent context for the supply mechanism.
US Environmental Protection Agency · TENORM: Fertilizer and Fertilizer Production Wastes · mise à jour 2025-12-29
EPA describes the sulfuric-acid process for phosphate rock, phosphoric acid and subsequent fertilizer manufacture. The article draws no additional health-risk inference or current production estimate from this page.
University of Minnesota Extension · Understanding phosphorus fertilizers · date initiale non affichée
University of Minnesota Extension explains phosphate manufacture, soil response and fertilizer grades. DAP 18-46-0 contains 18% nitrogen and 46% available phosphate expressed as P₂O₅ equivalent, distinct from elemental phosphorus. Minnesota trials provide no numerical yield response for Bangladeshi rice.
University of Minnesota Extension · Fertilizer urea · date initiale non affichée
University of Minnesota Extension confirms commercial urea’s 46% nitrogen content and agronomic limits. Product weight and nitrogen content do not measure actual plant uptake.
FAO · Strait of Hormuz crisis: fertilizer scarcity will affect next harvests and food supplies, FAO warns · 2026-05-07
FAO’s 7 May warning concerns the timing of fertilizer availability and future harvest risks. It supplies neither one worldwide application deadline nor a measured global yield loss.
World Bank approval of 26 June: a US$300 million project targeting 600,000 product tonnes of fertilizer, half urea, for the stated Aman and Boro seasons. These are programme targets and support periods, not certified deliveries, disbursements or universal sowing dates.
FAO / GIEWS · Country Brief: Bangladesh · 2026-09-04
Rolling FAO country brief, reference date 4 September 2026. Above-average forecast paddy output and the completed June Boro harvest must be separated from food-access pressures and the future 2026–27 crop. This remains a dated forecast, not final production.
AMIS / FAO · AMIS Market Monitor No. 142, October 2026 · 2026-10-02
Official October monitor, released on 2 October according to FAO’s calendar. Pages 1, 15 and 16 were visually checked. Aggregate supply prospects, fertilizer affordability and selected-country financing conditions use different baskets and nutrient units from the World Bank benchmarks. No worldwide credit census is implied.
International Chamber of Commerce (ICC) · Prolonged Hormuz shock could push cereal prices up by more than 80% · 2026-08-18
ICC commissioned and funded this study. Its 18 August communication describes the 81% figure against 2020 levels and a severe, persistent cost scenario, while methodological notes also discuss a no-shock reference. The preprint is not peer reviewed. The full manuscript could not be accessed, so its model was not independently audited.
International Chamber of Commerce (ICC) · Safeguarding food security amid the Hormuz crisis · 2026-08-18
The business organization’s 18 August policy proposals concern legal clarity, voyage insurance and financing across the commercial chain. The full brief was read. Deferred demand is not necessarily permanent application loss; proposals are not evidence of an already funded system.
Reuters / Arab News · Hormuz shipping disruption is starting to hit harvests, UN agency says · 2026-10-15
Reuters’s 15 October interview, read in the full Arab News republication of 16 October. IFAD president Alvaro Lario’s harvest assessment remains attributed. The report contains no country-level causal loss estimate isolating Hormuz; an unidentified price-index figure is excluded.
Official French ministry release no. 1127 of 15 October, full text and PDF read. It reports US$2.5 billion mobilized since the Middle East crisis began, almost entirely as grants, under the fertilizer and food-systems resilience action plan, particularly in Africa. It gives no instrument-by-instrument disbursement schedule or basis for treating the amount as wholly new October funding.
UNOPS · Statement on plans to facilitate the movement of goods for humanitarian purposes through the Strait of Hormuz · 2026-03-27
UNOPS’s 27 March task-force announcement identifies UNOPS, UNCTAD, IMO and ICC. It facilitates commercial fertilizer and related raw-material movements for humanitarian purposes; it is not a promise of free cargo distribution.
This analysis is not investment advice.
// cite this analysis
l0g, “Hormuz: five ships and the crop calendar”, l0g.fr, published October 16, 2026, updated October 16, 2026, https://l0g.fr/en/analysis/hormuz-fertilizer-corridor-crop-calendar/
$ cd ../analysis