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Iowa Farmer Files Federal Antitrust Lawsuit Against Major Fertilizer Producers

By  |  May 13, 2026
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A farmer from Galva, Iowa, has launched a federal class-action lawsuit accusing six of the world’s largest fertilizer companies of conspiring to keep fertilizer prices artificially high, alleging the conduct has placed significant financial pressure on farmers across Iowa and throughout the United States.

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    The lawsuit was filed April 30 in U.S. District Court in Sioux City by Steven Vohs, who claims several dominant players in the fertilizer industry coordinated pricing across key agricultural nutrients — nitrogen, phosphate, and potash, commonly referred to as NPK fertilizers. According to the complaint, the companies have engaged in anticompetitive conduct since Jan. 1, 2020, allegedly sharing confidential market information, coordinating pricing strategies, and participating in private meetings designed to keep fertilizer prices “fixed, raised, stabilized or maintained at artificially high levels.”

    Vohs alleges he personally paid inflated prices for fertilizer products sold by one or more of the defendants and is seeking class-action status on behalf of potentially thousands of farmers nationwide. Per the lawsuit, the case seeks a finding that the companies violated federal antitrust laws, along with triple damages, restitution, and interest.

    The complaint also details what it describes as decades of consolidation within the fertilizer sector. According to the filing, the number of fertilizer producers has dropped from 46 companies in 1980 to just 13 today. The lawsuit further alleges that four companies now control roughly 75 percent of the U.S. nitrogen fertilizer market, while two companies dominate nearly all domestic potash production. With so few competitors remaining, the lawsuit argues that meaningful price competition has been “restrained, suppressed or eliminated.”

    Read more: Farmers Take Union Pacific and K&O to Court Over Alleged Rail Fee Scheme

    The filing also references the steep fertilizer price increases farmers experienced in 2021, when costs rose between 60 percent and 95 percent despite declining demand and lower input costs, according to the complaint. During congressional testimony, Iowa Corn Growers Association President Mark Mueller warned lawmakers that fertilizer prices had climbed so sharply that some farmers were being forced to choose between purchasing essential crop inputs and maintaining financial stability.

    The lawsuit arrives amid broader scrutiny of fertilizer pricing in the United States. National reporting has indicated the U.S. Department of Justice has opened a formal antitrust investigation into pricing practices within the fertilizer industry, according to reports cited in the complaint.

    The suit names six companies as defendants: Canpotex, CF Industries, Koch Agronomic Services, Nutrien Ag Solutions, The Mosaic Company, and Yara International.

    According to the lawsuit, U.S. farmers used more than 20 million metric tons of fertilizer in 2023, while the domestic NPK fertilizer market was valued at nearly $30 billion in 2024. Vohs argues those market conditions, combined with concentrated industry control, have left farmers vulnerable to coordinated pricing practices that have driven costs higher across the agricultural sector.

    Source: Storm Lake Radio