Fertilizer
Nitrogen, phosphate, and potash: the nutrients behind every harvest, priced off natural gas, sulphur, and a few export hubs.
How Fertilizer Trades
Three nutrients feed the world
Almost half the people alive are fed by synthetic fertilizer. Strip it out and global crop yields collapse, because soils cannot replace, season after season, the nutrients that harvested grain carries off the field. Three primary nutrients do the heavy lifting, and the industry shorthand for them is N, P, K, the chemical symbols for nitrogen, phosphorus, and potassium. Nitrogen builds protein and chlorophyll and drives green leafy growth; it is the volume nutrient, applied in the largest tonnages and exhausted fastest. Phosphorus, applied as phosphate, powers roots, energy transfer, and seed and fruit formation. Potassium, applied as potash, regulates water, disease resistance, and the quality of the harvest. Most bagged products are blends sold by their N-P-K ratio, and a farmer reads that ratio the way a trader reads a spread.
The world consumes roughly 200 million tonnes of fertilizer nutrients a year, split very roughly 55 percent nitrogen, 25 percent phosphate, and 20 percent potash. Fertilizer is the one place where energy, mining, and agriculture meet in a single product. Nitrogen is essentially natural gas turned into a solid; phosphate and potash are mined rocks upgraded into soluble plant food. So the fertilizer trader watches the gas curve, the sulphur market, a handful of mining jurisdictions, and the planting calendar all at once.
Nitrogen is natural gas in a bag
Nitrogen fertilizer begins in the air, which is roughly 78 percent nitrogen gas, but that gas is inert and useless to plants until it is fixed into a reactive form. The Haber-Bosch process, invented in Germany before the First World War, does exactly that: it combines atmospheric nitrogen with hydrogen at high temperature and pressure to make ammonia. The hydrogen comes from natural gas (methane), and that single input dominates the economics. Natural gas is roughly 60 to 80 percent of the cash cost of making ammonia, which is why the ammonia and urea price curves track the gas curve more faithfully than almost any other manufactured commodity.
Ammonia is the building block; almost everything else in the nitrogen complex is ammonia upgraded. React it with carbon dioxide and it becomes urea, the world's most traded solid fertilizer at 46 percent nitrogen. Dissolve urea and ammonium nitrate in water and it becomes UAN, a liquid sprayed across the US Midwest. Combine it with nitric acid and it becomes ammonium nitrate. When European gas prices spiked through 2021 and 2022, ammonia plants across the continent simply switched off because the gas going in cost more than the urea coming out, idling capacity from the United Kingdom to Germany and sending urea to record highs. The lesson repeated in 2026, when Gulf gas feedstock and shipping were disrupted by the Strait of Hormuz crisis and urea ran back above 850 dollars a tonne.
Phosphate and potash are mined, not made
Phosphate starts as phosphate rock, dug from sedimentary deposits and dissolved in sulphuric acid to make phosphoric acid, which is then combined with ammonia to make the finished fertilizers DAP (diammonium phosphate) and MAP (monoammonium phosphate). Two inputs therefore matter beyond the rock itself: ammonia, which ties phosphate back to the gas market, and sulphur, a byproduct of oil refining and gas processing that becomes the sulphuric acid. World phosphate reserves are extraordinarily concentrated: Morocco's state producer OCP holds the majority of them, with China and the United States the other large producers, so phosphate carries a long-run resource-scarcity story that nitrogen does not.
Potash is the simplest of the three: it is mostly potassium chloride, known in the trade as MOP (muriate of potash), mined from ancient evaporite seams left behind by dried-up seas, then crushed and purified. There is no chemistry to speak of, just mining and concentration, so potash economics are about ore grade, mine depth, and freight. Supply is concentrated in a short list of countries: Canada (above all the Saskatchewan basin worked by Nutrien and Mosaic), Russia, and Belarus together hold most of the world's low-cost capacity. When sanctions hit Belarus and then Russia through 2021 and 2022, removing producers that together supplied roughly 40 percent of the market, potash prices spiked above 1,200 dollars a tonne before trade rerouted and prices normalized.
How it trades: hubs, agencies, and a planting calendar
Fertilizer is overwhelmingly an over-the-counter physical business priced against published assessments rather than a screen-traded futures market. The price reporting agencies do the work that an exchange does elsewhere: Argus, CRU, Profercy, and Fertilizer Week publish benchmark prices at the hubs where cargoes actually change hands. Urea is assessed FOB Egypt, FOB Middle East, and CFR Brazil; ammonia at Tampa CFR and at various FOB points; DAP at Tampa, Morocco, and Brazil; potash at Vancouver, Brazil, and Southeast Asia. A deal is struck as a netback to one of these hubs, and a producer's monthly tender, such as India's urea purchases or Brazil's import flow, can move the global price by itself.
Cleared paper exists but is thin. CME lists UAN and urea swaps (Nola and the US Gulf, Egypt, and Brazil) that let traders and farm cooperatives hedge, but the volumes are a rounding error next to crude oil or CBOT grains. The reasons are structural: fertilizer is bulky and differentiated by grade and location, contracts are seasonal, and a handful of national buyers dominate demand. Pricing swings hard around the planting calendar, firming ahead of spring application in the northern hemisphere and again ahead of the South American season, so the fertilizer year has a rhythm closer to a crop than to a financial instrument.
Fact Sheets
The world's most traded fertilizer: natural gas converted into 46 percent nitrogen and shipped by the bulk carrier.
The building block of all nitrogen, and a candidate clean fuel: natural gas plus air, under pressure.
Mined rock, sulphuric acid, and ammonia combined into the phosphorus that builds roots and seeds.
Mined potassium chloride: the simplest of the three nutrients, and the one a 2022 sanctions shock rewired.