A US court this week banned three weedkillers widely used in American agriculture, finding that the Environmental Protection Agency (EPA) broke the law in allowing them to be on the market. The ruling is specific to three dicamba-based weedkillers manufactured by Bayer, BASF and Syngenta, which have been blamed for millions of acres of crop damage and harm to endangered species and natural areas across the midwest and south. Discovery documents turned up in the litigation showed the companies knew that their dicamba weedkillers would probably lead to off-target crop damage. This is the second time a federal court has banned these weedkillers since they were introduced for the 2017 growing season. In 2020, the ninth circuit court of appeals issued its own ban, but months later the Trump administration reapproved the weedkilling products. But a federal judge in Arizona ruled on Monday that the EPA made a crucial error in reapproving dicamba, finding the agency did not post it for public notice and comment as required by law. US district judge David Bury wrote ... that it was a "very serious" violation and that if EPA had done a full analysis, it probably would not have made the same decision. Bury wrote that the EPA did not allow many people who are deeply affected by the weedkiller " including specialty farmers, conservation groups and more " to comment. "The evidence has shown that dicamba cannot be used without causing massive and unprecedented harm to farms as well as endangering plants and pollinators," said George Kimbrell [with] the Center for Food Safety, which litigated the case.