Cotton: Risk Is Moving from Prices to Margins

Between field and spinning mill, cotton passes through markets that move on different clocks. Farmers buy fertiliser, fuel and credit before selling their crop. Mills buy a fibre whose price also depends on inventories, fashion and world growth. The Hormuz shock abruptly raised one of those costs, urea. It did not produce an equivalent and lasting rise in cotton. The risk settled in the gap between the two.

In spring 2026, the near-standstill in fertiliser shipments through the Strait of Hormuz lifted the global urea benchmark from $472 a tonne in February to $856.90 in April. By July it was back to $400, close to its December 2025 level. Over the same period, the global cotton benchmark rose from $1.63 to $1.96 per kilogram, peaking at $2.03 in May. These World Bank series describe a severe spike followed by a retreat. They do not show a permanent shortage.

The story does not end when urea returns to its starting point. A monthly global price cannot reverse purchases already booked, higher freight bills, working-capital needs or the distance between ports and farms. To establish what Hormuz left behind in cotton, the relevant objects are margins, crop calendars and the inventory buffer.

Cotton prices capture only half the crop economics

The WTO Secretariat reconstructed the physical break. Once the Gulf conflict started, outbound fertiliser shipments through Hormuz fell close to zero. Gulf economies supplied 24.8% of global nitrogenous fertiliser exports and 11.4% of phosphatic fertiliser exports in 2024. Restrictions adopted by other suppliers may have affected as much as 15% of world fertiliser trade under the WTO’s monitored perimeter.

The price response was immediate. The effect on an individual farm account is slower and less uniform. A grower who secured volumes before February did not pay the April peak. Another who bought during the disruption may still carry that cost after the benchmark normalised. Currency, distance from port, subsidies and borrowing costs widen the differences.

The chart guards against opposite errors. A muted cotton response does not show that growers escaped the shock. Nor should the urea peak be extended indefinitely when the July benchmark was almost back to its December level. The relevant question is when purchases were made and how much of the extra cost remained in local accounts.

A hedge with a hole in it

A cotton contract can lock in or protect part of the fibre’s sale price. It does not automatically cover urea, diesel, marine insurance, the local currency or interest paid between planting and collection. This is cross-commodity basis risk: output value and production costs are driven by different markets.

Lower fertiliser use does not cause the same yield loss on every farm. A 2026 study covering 50 on-farm trials in South Carolina found that cotton lint yield responded to nitrogen in 52% of trials. The economic optimum varied widely with soils, rotation, water and management history. One farm may trim an excessive dose without losing lint. Another may sacrifice yield because it cannot finance the appropriate programme.

That decision under uncertainty is the risk. When fertiliser becomes briefly expensive, a farmer can delay the purchase, reduce application, switch crops or preserve the programme and accept a smaller margin. Agronomic effects emerge months later. The financing cost starts at once.

The global buffer is already shrinking

The balance sheet published by USDA on 14 August 2026 does not describe a present shortage. It does describe a market with less room to absorb another accident.

For 2026-27, the agency projects 117.6 million bales of world production and 122.9 million of mill use. That imbalance points to an inventory draw. Ending stocks are forecast to fall by 5.1 million bales, or 7%, to 69.7 million, their lowest since 2011-12. The stocks-to-use ratio would decline to 57%, equivalent to less than seven months of projected mill consumption.

Hormuz cannot be assigned responsibility for this entire tightening. The USDA links production declines to different causes: reduced acreage in several countries, hot and dry conditions in the US Southwest, lower Australian reservoir levels and weaker yields elsewhere. Fertiliser stress is an additional constraint, not a universal explanation.

What has changed is the market’s capacity to absorb a surprise. With shorter inventories, another input disruption, a weather event or stronger-than-expected demand can pass through more rapidly to physical prices. Cotton is available. Its shock absorber is getting thinner.

Brazil, India and Pakistan transmit the same shock differently

Brazil is the first test. It imports about 85% of its fertiliser needs. In April, USDA’s Brasília post reported that delivered agricultural input prices, including freight, had risen by roughly 33% since early March. It also noted that crops already under way had generally secured their fertiliser and that the main exposure was in the next purchasing cycle. These observations concern Brazilian agriculture, not a cotton-specific income statement. Meanwhile, USDA projects Brazil’s cotton crop down nearly 3% to 18.25 million bales because lower area more than offsets a record yield. The Brazil report does not support blaming that decline on fertiliser.

India is more directly exposed to Gulf supply. According to the WTO, almost two-thirds of its nitrogenous fertiliser imports came from the region. Part of the shock has been shifted onto the public balance sheet: India revised nutrient subsidies for the monsoon season and required fertiliser plants to receive at least 70% of their average gas consumption. USDA expects Indian cotton production to rise 1% to 24 million bales as greater harvested area offsets a 2% yield decline. This does not prove that fertiliser reduced yields. It shows how more acreage can conceal lower productivity in the national total.

Pakistan concentrates the other side of the exposure. Cotton output is forecast to fall 4% to 5.1 million bales while mill use rebounds 5% to 10.2 million. Imports are projected at 5 million bales. The textile sector must therefore finance more foreign fibre while the country grows less at home. Exchange rates, freight and credit can turn an agricultural gap into industrial and external-account risk even when cotton remains available globally.

What could still break in 2027

Three paths remain consistent with the evidence.

In the first, Hormuz stays open, urea remains near its July level and delivered local prices eventually follow it down. The spring spike remains a working-capital accident. Yields are then driven mainly by weather, water, pests and the acreage decisions already visible in USDA forecasts.

In the second, the global benchmark normalises but farm-delivered prices, financing costs or trade restrictions stay elevated. More constrained growers trim applications or switch crops. The effect appears in the following marketing year’s yields and acreage, when global stocks are already lower.

In the third, a renewed Hormuz disruption coincides with a weather shock. The World Bank had already identified the possible emergence of El Niño in the second half of 2026 as an additional agricultural-commodity risk. Such a combination would hit both costs and volumes. With less than seven months of use held in stocks, the market would have less time to reroute supply.

The useful indicators are concrete: urea and cotton prices in the same currency, delivered costs in major producing countries, fertiliser tenders, planted area, yields, abandonment rates, mill use and the stocks-to-use ratio. An oil barrel or a cotton contract viewed in isolation cannot describe this chain.

Sugar has its ethanol option, already examined in India’s case. Coffee and cocoa operate on much longer planting cycles. Cotton occupies a particular position: an agricultural crop upstream and an industrial material downstream, it absorbs the price of energy and fertiliser while remaining tied to world textile demand. Hormuz exposed that dual sensitivity. Urea’s retreat did not remove the risk. It made the risk measurable.

Primary sources

1. WTO, Fertilizer trade impacted by Strait of Hormuz conflict, 10 July 2026: flows, market shares, national dependencies, restrictions and support measures.
2. World Bank, August 2026 Pink Sheet: monthly Cotlook A cotton and Middle East f.o.b. urea benchmarks through July 2026.
3. World Bank, Commodity Markets Outlook, April 2026: transmission mechanisms, purchasing calendars and conditional risks.
4. USDA ERS, Cotton and Wool Outlook, August 2026: production, mill use, trade, stocks and 2026-27 country forecasts.
5. USDA FAS, Brazil Grain and Feed Annual, April 2026: Brazilian import dependence, delivered input prices and purchasing calendar.
6. Agronomy Journal, multi-farm study of cotton response to nitrogen, 2026: agronomic heterogeneity and the economic optimum.