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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. As of September 25, 2017, the Office of Indiana State Chemist (OISC) has received 256 total drift complaints for 2017, and 128 of those drift complaints are alleged to involve a Dicamba herbicide.
  2. Dicamba Outreach - What You Should Know About Purchasing and Using Dicamba-Based Herbicides (pdf, 46kb)
  3. Dicamba Use Outreach - Dicamba Use on Soybeans in Indiana (pdf, 37kb)
  4. Proposed Rule - Restricted Use Classification of Dicamba Containing Herbicides
  5. Options for Dealing with a Pesticide Drift Incident (PPP-110) (pdf, 658kb)
  6. How to File a Fertilizer or Pesticide Complaint (pdf, 30kb)
  7. Filing a Pesticide or Fertilizer/Manure Complaint (pdf, 86kb)
  8. Understanding Soybean Response to Dicamba (BASF) (pdf, 1,333kb)
  9. What have we learned so far about these incidents?
  10. Association of American Pesticide Control Official (AAPCO) Dicamba page
  11. Dicamba: EPA Meeting with State Representatives (07-13-17) (pdf, 122kb)
  12. Removing Herbicide Residues from Agricultural Application Equipment (How Proper Cleaning Helps Prevent Crop Damage and Improves Performance)
  13. 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)
  14. Response of Roundup Ready Soybean Yield to Dicamba Exposure (source: Purdue Extension)
  15. Response of Glyphosate-Tolerant Soybean Yield Components to Dicamba Exposure (source: ResearchGate)
  16. EPA Pesticide Program Updates (pdf, 22kb)