Phosphate

What it is

Phosphate rock is the primary commercial source of phosphorus (element 15), the essential nutrient in all phosphatic fertilizers, including diammonium phosphate (DAP), monoammonium phosphate (MAP), and superphosphates. Agriculture consumes roughly 95% of all phosphate rock mined globally. Unlike nitrogen, which can be synthesized from atmospheric air via Haber-Bosch, phosphorus has no industrial substitute: it must be mined. The supply chain runs from open-pit mines through beneficiation and sulfuric acid processing into phosphoric acid, then into fertilizer granules. The dominant global exporter is OCP Group, Morocco's state-owned enterprise. Other major producers include Mosaic (US-listed, operating in Florida and Brazil), PhosAgro (Russia), Ma'aden (Saudi Arabia, a joint venture with Mosaic), and a cluster of Chinese state enterprises.

History

Industrial phosphate mining began in South Carolina in the 1860s and expanded to Florida by the 1880s. The Green Revolution of the 1960s multiplied demand; global output grew from under 20 million metric tons per year in 1950 to roughly 160 million metric tons by 1990. Morocco's annexation of Western Sahara in 1975 brought the Atlantic-coast Bou Craa deposit under OCP's subsidiary Phosboucraa. In 2008, spot prices briefly surged to over US$430 per metric ton, up from under US$50 the previous year, spurring "peak phosphorus" research and global food-security alarm. China's export licensing restrictions from 2021 to 2022 rattled global DAP markets and renewed concern about supply concentration; China produced more than half of global output in 2019 while holding less than 5% of global reserves.

Current state

As of early 2026, global phosphate rock production runs at approximately 250 million metric tons per year. China leads at about 110 million metric tons (44% of global output), Morocco second at 36 million metric tons. Morocco and Western Sahara together hold an estimated 70% of known global reserves, approximately 50 billion metric tons, per the US Geological Survey; five countries, Morocco, China, Russia, Egypt, and Algeria, control about 85% of reserves.

In November 2025, the US Trump administration added phosphate to the federal Critical Minerals List alongside potash, copper, and seven other minerals, citing food security and dependency on adversarial suppliers. The India urea crisis of 2026 showed the cascade: the April 2026 Strait of Hormuz closure roughly doubled Indian urea import costs, and the same disruption threatened phosphate shipments from Gulf producers. India's government committed approximately US$5 billion (Rs 41,534 crore) on phosphatic and potassic fertilizer subsidies for Kharif 2026 alone.

Relationships

Phosphate, potash, and urea form the NPK triad; price spikes in one typically compress farmer applications across all three. Morocco's reserve dominance draws comparison to Saudi Arabia's in oil, amplified by phosphorus having no industrial substitute and no recycling infrastructure at meaningful scale. Western Sahara's disputed legal status complicates OCP contracts: European courts in 2021 and 2022 struck down EU trade preferences covering exports from the occupied territory. The Bou Craa mine accounts for roughly 2% of Morocco's total reserves and about 8% of OCP's annual rock output but adds legal risk to every shipment touching European buyers. The Resource nationalism: five producing states using export controls to capture battery-metal value covers the wider pattern of states asserting control over essential mineral supply chains, of which Morocco and China are the most consequential phosphate examples. The Producers and processors: the fifteen miners and refiners who set the critical minerals supply floor tracks the processing geography where concentration risk is most acute.

What to watch

OCP targets 70 million metric tons of phosphate rock per year by 2027. Capacity expansions are under construction in Brazil, Kazakhstan, Mexico, and Russia. At current global production rates, aggregate reserves last roughly 318 years, but domestic reserves in China, the US, and India face depletion within 40 to 46 years, after which those countries will depend on Moroccan supply. Any Chinese export restriction, Moroccan pricing move, or further European legal rulings on the Western Sahara dispute will set the near-term price floor for the world's food supply. See also 肥料価格50%下落でも米農家の救済は2027年以降 and Wheat climbs a fourth straight month as cereals defy a stable headline index for how fertilizer-cost shocks transmit into planting decisions and consumer prices.