Logo courtesy of FMC Corporation
FMC Corporation, a global agricultural sciences company, announced the submission of the regulatory dossier for rimisoxafen to Brazilian regulatory authorities on Sept. 28.
The filing marks the second global regulatory submission for rimisoxafen, a dual mode of action herbicide, following FMC's submission to the U.S. Environmental Protection Agency in July 2026.
Brazil is among the world's largest soybean and corn markets, with approximately 50 million hectares of soybean and over 20 million hectares of corn in production. Growers are facing mounting pressure from resistant broadleaf weeds, including Amaranthus hybridus, which has developed resistance to glyphosate and acetolactate synthase inhibitors, and Amaranthus palmeri, a regulated quarantine weed posing a significant and growing threat to crop productivity.
"Brazilian growers are facing complex weed resistance challenges that demand new and differentiated solutions," said Leonardo Bastos, vice president and chief marketing officer at FMC. "Submitting rimisoxafen for regulatory review in Brazil is an important step forward, demonstrating our long-term commitment to this market and to the growers who depend on innovation to protect their crops and their livelihoods."
Classified by the Herbicide Resistance Action Committee under Groups 12 and 32, rimisoxafen offers growers a novel tool to help diversify weed management programs and support long-term resistance management. In extensive FMC field testing, rimisoxafen has demonstrated consistent activity against small seeded broadleaf weeds and those resistant to other herbicides, including Amaranthus palmeri and Amaranthus hybridus.
Rimisoxafen is the third novel herbicide active ingredient FMC has advanced to regulatory submission in Brazil, following Isoflex active and Dodhylex active. Formulated product submissions for rimisoxafen are expected to follow as the regulatory process advances in Brazil. Timing and outcomes remain subject to regulatory review and approval.
Rimisoxafen is not registered for sale or use in Brazil or any other country. No offer for sale, sale or use of this product is permitted prior to receipt of all required regulatory approvals.