Dicamba Facts image

On Oct. 31, 2018, the U.S. Environmental Protection Agency (EPA) announced the extension of Engenia, XtendiMax and FeXapan registrations through 2020 for “over-the-top” use in dicamba-tolerant cotton and soybean fields. EPA has enhanced the previous labels and put in place additional safeguards in an effort to increase the success and safe use of the product in the field.

The Missouri Department of Agriculture announced it will not pursue Special Local Needs (24c) labels for the use of these three products for the 2019 growing season.

The two-year registration is valid through Dec. 20, 2020, and includes the following:

  • Only certified applicators may apply Dicamba over-the-top (those working under the supervision of a certified applicator may no longer make applications)
  • Prohibit over-the-top application of Dicamba on soybeans 45 days after planting or up until the R1 growth stage (first bloom), whichever comes first
  • Prohibit over-the-top application of Dicamba on cotton 60 days after planting
  • For cotton, limit the number of over-the-top applications from four to two
  • For soybeans, the number of over-the-top applications remains at two
  • Applications will be allowed only from one hour after sunrise to two hours before sunset
  • In counties where endangered species may exist, the downwind buffer will remain at 110 feet and there will be a new 57-foot buffer around the other sides of the field (the 110-foot downwind buffer applies to all applications, not just in counties where endangered species may exist)
  • Enhanced tank clean-out instructions for the entire system
  • Enhanced label to improve applicator awareness on the impact of low pH on the potential volatility of Dicamba
  • Label clean up and consistency to improve compliance and enforceability
  • Map of counties with additional EPA Endangered Species restrictions for Engenia, FeXapan and XtendiMax herbicides

Dicamba labels

Product Name U.S. EPA Section 3 Label
Engenia Herbicide
(EPA Registration
Number 7969-345)
Engenia Herbicide US EPA Section 3 label

* Expires Dec. 20, 2020

XtendiMax Herbicide
(EPA Registration
Number 524-617)
Xtendimax Herbicide US EPA Section 3 label

* Expires Dec. 20, 2020

FeXapan Herbicide
(EPA Registration
Number 352-913)
Fexapan Herbicide US EPA Section 3 label

* Expires Dec. 20, 2020

* The registration for all dicamba products will automatically expire on Dec. 20, 2020, unless EPA further extends it.

Dicamba Training

The MU College of Agriculture, Food and Natural Resources and MU Extension, in cooperation with the Missouri Department of Agriculture, will continue offering web-based training for those wishing to purchase and/or use synthetic auxin herbicides. The 2019 label instructions and requirements will be covered in the required training. According to the new training requirements set forth by EPA, training offered by Bayer, BASF and Corteva for their respective products will satisfy the requirement.

Registration and event information for in-person and web-based training will be made available as soon as possible.

Report Pesticide Drift Damage

The Missouri Department of Agriculture is responsible for regulating the use of pesticides in the state of Missouri. This is established in Sections 281.005 to 115 (RSMo) of the Missouri Pesticide Use Act. To report pesticide drift damage on your farm or property, please visit the Pesticide Incident Report page.