Where do phosphate fertilizers come from?

Start with what this page cannot show. There is no public table of finished phosphate fertilizer output by country. Production of diammonium phosphate, monoammonium phosphate and triple superphosphate is collected from companies by the International Fertilizer Association and published under license, so no production ranking appears on this page and no chart on it shows one. The origin picture here is built from two things that are public: the export tables below, which record what actually crossed a border, and the mining of phosphate rock, which is the input to every tonne of phosphate fertilizer made anywhere.

It helps to know what the products are. A fertilizer grade is written as three numbers, the percentages by weight of nitrogen, of phosphorus expressed as P2O5 and of potassium expressed as K2O. DAP, diammonium phosphate, is about 18-46-0: phosphoric acid neutralized with ammonia, so each granule carries nitrogen as well as phosphorus and dissolves quickly in the soil. MAP, monoammonium phosphate, is about 11-52-0, less ammonia and more phosphate, slightly acidic in solution, which suits alkaline soils and makes it the preferred component of blends. TSP, triple superphosphate, is about 0-46-0 and contains no nitrogen at all, because it is made by reacting phosphoric acid with more ground rock instead of with ammonia. Single superphosphate, the oldest of the four, is weaker at roughly 0-16-0 to 0-20-0 but carries useful sulfur and calcium.

That chemistry decides how customs classifies the products, and it is the most confusing thing about phosphate trade data. HS 3103 covers phosphatic fertilizers, meaning those whose only declared nutrient is phosphorus: TSP, single superphosphate and basic slag. Because DAP and MAP also carry nitrogen, they sit instead under HS 3105, fertilizers containing two or three nutrients, and more precisely under HS 310540. The primary trade table on this page is HS 3103, so it is a straight-phosphate table; the DAP and MAP flows, which are much the larger business, are shown alongside it. Anyone comparing phosphate rankings from different sources should check which heading is being counted before concluding that they disagree.

Plants cluster in three kinds of place. Some sit on the mine, where rock never has to travel: Morocco at Jorf Lasfar and Safi, Saudi Arabia at Ras Al Khair, Jordan at Aqaba, Tunisia at Gabès and Sfax, and the Chinese complexes of Yunnan, Guizhou and Hubei. Some sit on cheap ammonia and a deep-water berth and pull rock or acid in by ship, which describes the United States along the lower Mississippi and the Russian plants on the Baltic. And some sit in the market, as India's granulation plants do, importing rock and merchant-grade phosphoric acid so that the finished product is made close to the farmer. China, Morocco, Russia, Saudi Arabia and the United States make most of the world's DAP and MAP, and the export tables are the public evidence for that, though they understate China and the United States because both consume much of what they make.

In 2024 the largest exporter of phosphatic fertilizers (HS 3103) was Morocco, with $1.5 billion, or 42% of the world's $3.5 billion of export value (CEPII BACI), ahead of China (17%), Israel (12%) and Egypt (11%). On the buying side Brazil took $1.1 billion, 32% of the world's $3.5 billion of imports, followed by Bangladesh (15%) and United States (11%). This is the straight-phosphate line, so it is dominated by TSP and single superphosphate going to countries that blend their own compounds.

The ammoniated phosphates are a much bigger trade. For DAP and MAP under HS 310540, exports were worth $9 billion in 2024, led by Morocco with 32%, then Russia (21%), United States (13%) and China (12%); the largest importer was Brazil with 28%, ahead of Australia (14%) and Canada (14%). Widen the lens to all multi-nutrient fertilizers under HS 3105 and the trade was worth $37.6 billion in 2024, with Morocco (21%), China (15%) and Russia (14%) at the top and Brazil (12%) and India (10%) the largest buyers. Brazil recurs in every import table because it farms an enormous area of weathered, phosphorus-hungry tropical soil and mines very little rock of its own.

Phosphate fertilizers have no long-established futures market of the kind that grains and metals enjoy. Prices are assessments: reporting agencies such as Argus, CRU and Profercy collect deals, bids and offers from producers, traders and distributors each week and publish a range or midpoint for each product at each loading point, and a cash-settled swap market settled against those assessments lets distributors and importers hedge in modest size. DAP loaded at the US Gulf is the closest thing the sector has to a global benchmark, partly because the New Orleans barge market is transparent and liquid and partly because it is where American, Moroccan, Russian and Saudi product all compete for the same buyer.

Two series appear on this page. The primary one is DAP, FOB US Gulf: in August 2026 it stood at $793.5/t, unchanged from a year earlier (World Bank Pink Sheet). The record monthly average was $1,076/t in July 2008, at the peak of the 2008 food and fertilizer spike, but adjusted for US consumer prices the real high was $2,511/t in September 1974, during the first oil shock; the lowest month in a series that begins in 1967 was $54/t in January 1970. The companion series TSP, FOB North Africa was $704.4/t in August 2026, against a record of $1,132/t in August 2008. The two do not move together tick for tick, because DAP carries ammonia and TSP does not.

A quote has to be read with its delivery term and its nutrient content attached. FOB means the price of product loaded onto the vessel at the named port, with the buyer paying freight, insurance and discharge; CFR or CIF at a destination such as Brazil or India is the same product with those costs included, which is why the CFR Brazil number is always the higher one and why the gap between them is really a freight quote. Most tonnes move on contracts of a season or a year, with volumes committed and prices set monthly or quarterly against the published assessments, and India's annual negotiations for DAP and for phosphoric acid function as a reference for Asian buyers. Three ambiguities matter. A tonne of DAP is not a tonne of phosphorus, so comparing DAP with TSP on a dollars-per-tonne basis flatters TSP until you divide by nutrient content. Part of the DAP price is really an ammonia price, and therefore a natural gas price. And a single loading point is not a world market: the same week can see a firm US Gulf quote and a falling one out of North Africa.

China is one of the largest producers of DAP and MAP and normally one of the largest exporters, so any restriction it places on shipments removes a large block of supply from the world market within weeks. Export inspection requirements, informal volume guidance and seasonal windows are used to keep product at home for the domestic planting seasons and to hold down farm costs. Buyers in India, Brazil, Bangladesh and Southeast Asia then have to bid for Moroccan, Saudi, Russian and American tonnes instead, and the benchmark price rises even though no plant has closed anywhere.

Roughly two thirds of a DAP granule by weight comes from phosphate rock, but a large part of its cost does not. Making phosphoric acid requires sulfuric acid, and sulfur is a by-product of oil refining and sour gas processing, so its price is set by the energy industry. Ammoniating that acid requires ammonia, which is made from natural gas. When European or Asian gas spikes, ammonia costs rise and DAP follows; when refinery runs fall, sulfur tightens and the same thing happens through a different door.

India is among the largest importers of finished phosphate, phosphoric acid and rock, and almost all of that demand passes through the Nutrient Based Subsidy, which pays importers a fixed amount per tonne of nutrient. When world prices climb faster than the subsidy is revised, importers stop booking rather than sell into a controlled retail price, and Indian buying disappears from the market. When the rates are raised or the rupee firms, tenders reappear in volume. That stop-start pattern is one of the clearest short-term signals in the phosphate market.

Brazil is the largest single buyer of ammoniated phosphate, and it buys on a calendar. Fertilizer for the main soybean crop is imported through the first half of the year and moved inland by truck and rail before planting begins in September, so freight, port congestion and barge availability inside Brazil matter as much as the FOB price. A late or early Brazilian buying program shows up in CFR Brazil assessments months before it shows up in crop statistics, and it sets the tone for Atlantic basin trade.

Phosphorus is the most deferrable of the three major nutrients. Soils hold a reserve of it, so a farmer facing a bad price for grain can skip or halve a phosphate application for a season and take a small yield penalty, which is not true of nitrogen. That makes phosphate demand unusually sensitive to the ratio between fertilizer cost and crop revenue. Sustained low grain prices cut phosphate volumes quickly, and the soil reserve drawn down in those years produces a rebound in demand later.

Phosphate is one of the most litigated fertilizer markets. Countervailing duties imposed by the United States on phosphate fertilizer from Morocco and Russia redirected those tonnes toward Brazil and India and left American buyers paying a domestic premium, and European tariffs on Russian and Belarusian fertilizer have had a similar splitting effect. Measures like these rarely change how much fertilizer exists; they change which port it sails to, and they open and close price gaps between regions that were previously arbitraged away.

The supply side moves in large steps rather than smoothly, because a phosphate complex is built as a unit: mine, beneficiation plant, sulfuric acid plant, phosphoric acid plant, ammoniation and granulation lines, storage and a berth. Projects of that kind take years and arrive all at once, so a single Moroccan or Saudi start-up can add more capacity in one year than demand grows. That lumpiness, rather than any shortage of rock, explains much of the multi-year shape of the price series.

Every tonne of finished phosphate begins with acid. Molten sulfur is burned to sulfur dioxide, converted to sulfur trioxide over a catalyst and absorbed into water to make sulfuric acid, a reaction that gives off so much heat that a large acid plant is also a power station and exports steam to the rest of the complex. That acid is then mixed with ground phosphate rock in the wet process: the rock dissolves, phosphoric acid goes into solution and calcium sulfate crystallizes out as phosphogypsum, which is filtered off and pumped to a stack. Roughly five tonnes of gypsum are produced for every tonne of P2O5, and because it carries the radium that was in the rock it is stored rather than sold in most jurisdictions.

The filtered acid is weak and has to be boiled down under vacuum to merchant grade, about 54% P2O5, which is the form in which phosphoric acid is shipped to countries that granulate but do not mine. To make DAP or MAP, that concentrated acid is neutralized with ammonia in a pipe reactor, and the resulting slurry is sprayed into a rotating granulation drum where it builds up in layers on recycled fines. The granules pass through a dryer, a set of screens, a cooler and a coating drum; oversize is crushed and returned, undersize goes back to the drum, and only the middle fraction leaves as product. The ammonia-to-acid ratio decides whether the plant is making DAP or MAP, and switching between them takes hours rather than weeks.

TSP takes a different turn at the same fork. Instead of ammonia, more finely ground rock is added to the concentrated acid; the mixture is cured for days or weeks in a pile while the reaction completes, then granulated. Single superphosphate skips phosphoric acid entirely and treats rock directly with sulfuric acid, which is why it is weak but cheap and why it survives where sulfur is plentiful and freight is expensive. Compound NPK grades are made either by adding potash and extra nitrogen inside the granulation drum, which gives every granule the same analysis, or by bulk-blending finished DAP, urea and potash granules, which is cheaper but segregates in transport if the particle sizes do not match.

Phosphate fertilizers exist to supply a nutrient that plants cannot get any other way. Phosphorus is central to energy transfer inside the cell, to root development in young plants and to seed and grain set, and unlike nitrogen it cannot be fixed from the atmosphere by any crop or bacterium. Nearly all phosphate consumption is agricultural: fertilizer dominates, with animal feed phosphates a distant second and industrial phosphates smaller again. Cereals take the largest part of that use, followed by oilseeds, with fruit, vegetables and sugar crops behind them.

Placement matters more for phosphorus than for the other nutrients, because phosphate ions bind tightly to iron and aluminum in acid soils and to calcium in alkaline ones and do not move far through the profile. Fertilizer is therefore banded near the seed at planting rather than broadcast late, and heavily weathered tropical soils in Brazil, sub-Saharan Africa and Southeast Asia need larger applications than temperate soils simply to satisfy that fixation before the crop sees any. The same immobility is why phosphate leaves fields mainly attached to eroded soil particles, and why runoff from over-fertilized ground causes algal blooms in lakes and estuaries, which is the environmental case for placing less, more precisely.

The chain is short but very concentrated. A handful of integrated complexes make a large share of world supply, and each one is a single site combining a mine or a rock berth, a sulfur import terminal, acid plants, granulation lines and a loading jetty. Jorf Lasfar in Morocco, Ras Al Khair in Saudi Arabia, the Florida plants around Tampa and the Louisiana plants on the lower Mississippi, the Russian sites feeding the Baltic, and the Chinese complexes of the southwest between them cover most of what is traded. The concentration is not only geographic: sulfur, ammonia and rock must all arrive at the same gate, and losing any one of the three stops the plant.

Movements follow a small number of well-worn lanes. Product from Morocco and Tunisia crosses to Brazil, West Africa and Europe; Saudi, Jordanian and Egyptian tonnes go east through the Red Sea to India and Southeast Asia; Russian material sails from Baltic and Black Sea ports; American product moves down the Mississippi by barge to New Orleans, where it is either loaded for export or transferred to river terminals for the domestic market. On the receiving side, Brazil discharges at Paranaguá, Santos and São Francisco do Sul and then faces a long road haul inland, and India spreads its imports across a dozen coastal granulation plants.

The single points of failure are unusual because most of them are not phosphate at all. A sulfur shortage, a gas curtailment that idles ammonia plants, or a strike at a sulfuric acid producer can stop finished output while the rock sits untouched in the pit. Barge traffic on the Mississippi stops when the river runs low, stranding both exports and domestic deliveries at exactly the season they are needed. Red Sea diversions add weeks to the Gulf-to-India route. And because one country supplies a disproportionate share of exportable tonnes, a policy decision in Beijing can tighten the world market faster than any accident, which is why traders watch Chinese customs notices as closely as they watch plant outages.