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Dicamba Herbicide Updates

Dicamba containing herbicides, including new formulations such as XtendiMax with VaporGrip Technology (EPA Reg. No. 524-617), Engenia Herbicide (EPA Reg. No. 7969-345), and FeXapan Herbicide Plus VaporGrip Technology (EPA Reg. No. 352-913) have been in the news recently based on off-target movement (drift) complaints being filed with pesticide regulatory officials in Indiana and other states.

This website is intended to provide interested parties with the most up to date information related to the status of those complaints and the regulatory activities associated with dicamba herbicides in Indiana.


  1. Mandatory Dicamba Training for Use of Engenia, FeXapan, or Xtendimax in Indiana in 2018:
    A) 2018 Mandatory Dicamba Training Presentation (source: Purdue Pesticide Programs, 74-slide PPT)
    B) Dicamba Application Record Keeping and Quick Guide (pdf, 1,338kb)
    C) Precautions for Dicamba Use in Xtend Soybeans (pdf, 443kb)
    D) 2018 Guidance for Interpreting Dicamba Labeling Terms & Phases (pdf, 242kb)
  2. Dicamba RUP Applicator Notice (11-20-17) (pdf, 52kb)
  3. Dicamba RUP Dealer Notice (11-20-17) (pdf, 869kb)
  4. Registrants of Dicamba-Containing Agricultural Herbicide Products Notice (12-20-17) (pdf, 39kb)
  5. List of Dicamba herbicides likely to be impacted by state RUP classification (draft) (pdf, 77kb)
  6. 2017 & 2018 Dicamba Use and Related Activities (pdf, 575kb)
  7. EPA and States' Collective Efforts Lead to Regulatory Action on Dicamba (pdf, 22kb)
  8. As of October 27, 2017, the Office of Indiana State Chemist (OISC) has received 257 total drift complaints for 2017, and 129 of those drift complaints are alleged to involve a Dicamba herbicide.
    View map of final numbers
    (pdf, 427kb)
  9. County by County Map of Vegetation Samples Submitted to Purdue's Plant and Pest Diagnostic Laboratory (PPDL) for Identification of Dicamba Exposure Symptomology (08-14-17) (pdf, 60kb)
  10. What have we learned so far about these incidents? (pdf, 86kb)
  11. Final Rule - Restricted Use Classification of Dicamba Containing Herbicides
  12. Options for Dealing with a Pesticide Drift Incident (PPP-110) (pdf, 658kb)
  13. How to File a Fertilizer or Pesticide Complaint (pdf, 30kb)
  14. Filing a Pesticide or Fertilizer/Manure Complaint (pdf, 86kb)
  15. Understanding Soybean Response to Dicamba (BASF) (pdf, 1,333kb)
  16. Association of American Pesticide Control Official (AAPCO) Dicamba page
  17. Dicamba: EPA Meeting with State Representatives (07-13-17) (pdf, 122kb)
  18. Removing Herbicide Residues from Agricultural Application Equipment (How Proper Cleaning Helps Prevent Crop Damage and Improves Performance)
  19. Response of Roundup Ready Soybean Yield to Dicamba Exposure (source: Purdue Extension)
  20. Response of Glyphosate-Tolerant Soybean Yield Components to Dicamba Exposure (source: ResearchGate)
  21. Indiana CCA 12-12-17: Launching Xtend Soybeans in a Wet & Windy Year (pdf, 12.35MB)