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Welcome to the Office of Indiana State Chemist

The Indiana State Chemist is charged with administering several agricultural laws involving animal feeds, fertilizers, pesticides and seeds. The goals of these laws are to ensure truth-in-labeling, food safety, user safety and the protection of our environment.

Dicamba Use in Indiana after June 3, 2020:


If you are reading this, you are probably already aware that on June 3, 2020 the United States Court of Appeals for the Ninth Circuit issued an opinion vacating the federal registrations for the dicamba herbicides Engenia (EPA Reg. No. 7969-345), FeXapan (EPA Reg. No. 352-913), and Xtendimax (EPA Reg. No. 524-617). The federal registration for Tavium (EPA Reg. No. 10-1623) is NOT impacted by this opinion.

View the opinion (pdf, 237kb)


Indiana state pesticide law allowed the continued distribution and use of these products in Indiana from June 3, 2020 through June 8, 2020. On June 8, 2020, the U.S. EPA issued a cancellation order (view the cancellation order) for the three impacted dicamba products. In summary, that federal cancellation order requires the following:



  1. Distribution or sale by the registrant. Distribution or sale by the registrant (BASF, Bayer and Corteva) of all existing stocks of the three products listed above is prohibited effective as of the time of the order on June 3, 2020, except for distribution for the purposes of proper disposal.

  2. Distribution or sale by persons other than the registrant. Distribution or sale of existing stocks of the three products listed above that are already in the possession of persons other than the registrant is permitted only for the purposes of proper disposal or to facilitate return to the registrant or a registered establishment under contract with the registrant, unless otherwise allowed in item #3 or #4 below.

  3. Distribution or sale by commercial applicators. For the purpose of facilitating use no later than July 31, 2020, distribution or sale of existing stocks of the three products listed above that are in the possession of commercial applicators is permitted.

  4. Use. Use of existing stocks of products listed above inconsistent with any respect with the previously-approved labeling accompanying the product is prohibited.

In addition to the above listed restrictions in the federal cancellation order, it is important to note that the state registrations for these products require that use may NOT occur after JUNE 20, 2020, regardless of any other state or federal action on these registrations.


Questions may be directed to Dave Scott at, or 765-494-1593.



Latest News, Alerts and Other Information:


  1. PRESS RELEASE Regarding Unsolicited Seeds - Purdue University College of Agriculture (pdf, 168kb)
  2. Additional information regarding unsolicited seeds (source:
  3. COVID-19 Regulatory Adjustment Updates 08/17/20 (pdf, 157kb)
  4. Disinfectant Use Against SARS-CoV-2: The Office of Indiana State Chemist has developed two lists to assist the public. If you have any questions about products, please contact our office at:
    - OISC List A (pdf, 70kb) (07-31-20): Indiana registered disinfectants that have provided US EPA with the data that demonstrates efficacy against SARS-CoV-2.
    - OISC List B (pdf, 309kb) (07-31-20): Indiana registered disinfectants that meet EPA's criteria for use against SARS-CoV-2. EPA expects these products to kill SARS-CoV-2 because they demonstrated efficacy against a virus that is harder to kill than SARS-CoV-2.
  5. EPA provides critical information to the American public about safe disinfectant use (source:
  6. What You Need to Know Regarding Products Making Claims to Kill the Coronavirus Causing COVID-19 (source: (pdf, 266kb)
  7. Using Disinfectants and Wipes Against COVID-19 (pdf, 581kb) (source: NPIC (National Pesticide Information Center)
  8. OISC List C (pdf, 135kb) (08-03-20): The Office of Indiana State Chemist has developed a list of Indiana registered disinfectants that correspond to EPA’s List O: Disinfectants for Use Against Rabbit Hemorrhagic Disease Virus (RHDV2). RHDV2 does not impact humans. RHDV2 is highly contagious and it affects both domestic and wild rabbits. The OISC list will be updated often. If you have any questions, contact our office at:
  9. How to Search Using My Records (pdf, 379kb)
  10. Dicamba information now available
  11. 2020 Pesticide Clean Sweep dates announced for August
  12. Filing a Pesticide or Fertilizer/Manure Complaint (pdf, 352kb) NOTE: Download this form before completing and submitting.
  13. Follow us on Twitter!
    - Seed (IndianaStateChemSeed - @IndianaChemist)
    - Feed (IndianaStateChemFeed - @IndianaChemFeed)
  14. Exam Vendor information available
  15. Indiana Hemp Program Information
  16. Fertilizer Use Information Sheet  (pdf, 235kb)
  17. OISC Mission Statements
  18. OISC Inspectors (Feed, Fertilizer and Seed)
  19. OISC Pesticide Investigators and their territories (pdf, 377kb)
  20. Chemical Facility Anti-Terrorism Standards (CFATS) Continued Outreach