What is the core purpose of the FMC–Corteva agreement on rimisoxafen, and how does it address herbicide resistance in key crops?

The core purpose of the FMC–Corteva agreement is to expand access to FMC’s rimisoxafen technology across North and South America’s corn and soybean markets to help growers control herbicide-resistant weeds—especially Amaranthus species, identified as the number one weed resistance challenge in soybeans. Under the agreement, Corteva makes a $200 million prepurchase payment for rimisoxafen supply from FMC, retains exclusive rights to develop and commercialize its own premix formulations for those crops and regions, while FMC retains full ownership of rimisoxafen and continues developing additional rimisoxafen-based products globally. Critically, rimisoxafen is classified by the Herbicide Resistance Action Committee as the industry’s first dual mode of action herbicide—creating a significantly higher barrier to resistance development than single-mode herbicides—and is intended to manage resistant weeds like Palmer amaranth and waterhemp that have caused billions in annual yield losses.

What regulatory and commercial timeline is specified for rimisoxafen under this agreement?

First commercial sales of rimisoxafen-based products under the FMC–Corteva agreement are anticipated by the end of the decade, pending applicable regulatory approvals. The agreement itself extends through the next decade, ensuring long-term collaboration and supply continuity, with FMC supplying the active ingredient to Corteva while both companies independently develop and commercialize their own exclusive premix formulations for corn and soybean markets across the Americas.

FMC, Corteva expand access to herbicide technology in Americas

Jun 23, 2026

FMC and Corteva signed a deal expanding access to FMC's rimisoxafen herbicide technology across the Americas, with Corteva paying $200 million for active ingredient supply to manage resistant weeds in corn and soybeans.

chemweek

2026-06-23

FMC, Corteva expand access to herbicide technology in Americas

FMC, Corteva expand access to herbicide technology in Americas

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