Dicamba

Thank you to the University of Arkansas for the dicamba injury on soybeans photograph.

Please contact the Pesticide State Lead Agency to report Dicamba injury or issues.

2017 and 2018 materials from this Dicamba page have been moved here.


Dicamba-tolerant seeds were registered for use during the 2016 growing season.  Due to the lack of the accompanying dicamba formulation which was required to be used with the seeds, many growers used older formulations and the resulting drift and volatilization issues caused widespread crop damage and enforcement issues.

EPA registered the new dicamba formulation in the fall of 2016.  During the 2017 growing season we continued to see widespread crop damage and enforcement issues.  EPA and the registrants negotiated new labels for the 2018 season.  During 2018 there were still many issues with crop and non-crop damage and enforcement.  EPA approved a conditional 2-year registration with revised labels and requirements for the 2019 and 2020 seasons.


Moving into the 2019 Season

On December 17, 2018 Q&A on the new labels were posted here.  Since then, SFIREG has formed a Dicamba workgroup and they are actively engaged with EPA in developing more refined guidance for the new labels.  The new guidance/Q&A will be posted here as soon as it is available.  The previous Q&A has been moved to the archives.


Endangered Species:  On November 19, 2018, EPA posted Dicamba Pesticide Use Limitation Areas.  The county list may be found at: https://www.regulations.gov/document?D=EPA-HQ-OPP-2016-0187-0974


On October 31, 2018 EPA released changes to the Dicamba registration.