Major fertilizer producers are drawing fresh attention from regulators, lawmakers, and farmers amid sharp price increases triggered by the conflict in Iran. Disruptions to global shipping routes have tightened supplies, but accusations of collusion and profiteering have farmers wondering whether market forces alone explain the surge or if industry coordination is at play. A new federal class-action lawsuit and an ongoing Justice Department investigation have put the spotlight on how concentrated the fertilizer market has become.
The Problem: War-Driven Spikes Hit Farmers Hard
The latest pressure stems from the Iran conflict, which has blocked key export routes through the Strait of Hormuz. Urea prices jumped from about $516 per metric ton to as high as $683 in just 12 days, a 32 percent rise. Ammonia and other nitrogen products have followed similar paths. This comes on top of earlier shocks: fertilizer costs rose more than 60 percent in 2021 and 2022, adding an estimated $128,000 in extra expenses for the average farm.
The industry is highly consolidated. A few companies control most U.S. nitrogen, phosphate, and potash production. Four firms dominate roughly 75 percent of the nitrogen market, while two control nearly all domestic potash. Critics say this structure lets the companies coordinate pricing and keep costs elevated long after initial supply disruptions fade. Farmers argue the recent increases far exceed what limited Hormuz-related shortages would justify, especially since most U.S. urea is produced domestically. The result ripples through the food system: higher input costs for growers mean tighter margins and potential pressure on consumer prices.
Current State of Investigations and Lawsuits
Federal antitrust enforcers have already opened a formal probe. The Justice Department’s Antitrust Division, working out of its Chicago office, is examining whether leading fertilizer producers violated civil or criminal antitrust laws through pricing practices. The inquiry, first reported March 4, 2026, targets Mosaic Co., Nutrien Ltd., CF Industries Holdings Inc., Koch Agronomic Services, and Yara International ASA. No charges have been filed, and the investigation remains in its early stages.
Private litigation has followed quickly. On March 7, 2026, Fire Creek Farms of New York filed a proposed class-action suit in federal court in Illinois accusing the same core group of companies, plus Canpotex Ltd., of conspiring to fix, raise, maintain, and stabilize prices for nitrogen, phosphorus, and potash since 2021. A second complaint arrived days later from Union Line Farms of Hopkinton, Iowa, filed in the U.S. District Court for Colorado. Both suits claim the companies profited from record gains while farmers absorbed massive cost hikes.
Lead counsel Greg Asciolla of DiCello Levitt put it plainly: “Most people will never think about the cost of fertilizer, but American farmers live with it every day. When prices for an essential input are artificially inflated, the impact falls squarely on farmers and ripples across the food system.”
Lawmakers have joined the chorus. Senator Josh Hawley of Missouri sent letters March 12 to the CEOs of the major producers and to Attorney General Pam Bondi demanding answers by March 27 on whether companies used the Iran conflict as cover for unjustified price hikes. Agricultural groups have also pressed for action, including calls to ease phosphate import duties and boost alternative supplies.
Remedies on the Table
Farmers in the class actions could recover damages if the suits succeed, potentially including treble damages under antitrust law. A successful DOJ case might bring fines, consent decrees, or structural changes to restore competition.
Policy steps are already moving. The Treasury Department has waived sanctions on Venezuelan nitrogen imports, which covered about 5 percent of U.S. urea needs last year. A federal court reduced duties on Moroccan phosphate, and an appeal by Mosaic was dismissed earlier this month. Agricultural retailers and 64 farm groups have urged the White House to keep supply lines open, cut regulatory burdens, and consider emergency measures. Agriculture Secretary Brooke Rollins signaled March 14 that an announcement on cost-reduction steps, possibly including congressional aid, is coming soon.
Longer-term options include continued antitrust enforcement, incentives for new domestic production, and trade adjustments to diversify supply. Corn and other row-crop producers have already asked state and national associations to monitor the DOJ probe and push for transparency.
As spring planting ramps up, the coming weeks will test whether these investigations and lawsuits deliver accountability or simply add more uncertainty. Farmers watching input costs climb hope the scrutiny translates into relief before another season of squeezed margins begins. For now, the fertilizer industry finds itself under the microscope once again, with regulators, courts, and Congress all asking the same question: Are these prices the result of war, or something more?