American farmers who sued Monsanto Co. after discovering a genetically modified wheat strand in Oregon plan a “tight and aggressive timeline” to attempt mediation with the company.

More than a dozen class actions were coordinated before Chief Judge Kathryn Vratil in the U.S. District Court of Kansas. The cases allege that Monsanto, which field tested genetically modified wheat about a decade ago, contaminated crops intended for human consumption. They were filed after an Oregon farmer discovered genetically engineered wheat in his field last year.