Dicamba Training in Iowa

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In person training for the 2019 crop year will take place during January and February. Online training will begin in March.

Dicamba-based products are restricted use pesticides. Iowa requires users to be registered as certified applicators in the state. Additionally, applicators must complete training every year before they apply dicamba-based products.
Note: Dicamba training is also referred to by it's official title of auxin training.

Click here to jump to LIVE TRAINING information

Click here to jump to ONLINE TRAINING information


Online training from one provider qualifies as dicamba/auxin training for all dicamba-based products.

Bayer Crop Science - XtendiMax®

Bayer Online Training

BASF - Engenia®

BASF Online Training

Corteva Agriscience- FeXapan®

Corteva Online Training

Syngenta - Tavium®

Corteva Online Training


Changes have been made to the dicamba product labels for the 2019 crop year. Below are a few specific changes to be aware of.

PLEASE NOTE: This is not a comprehensive list of changes! For full information about any products, visit the manufacturer's page to review the product label.

EPA worked with pesticide manufacturers, farmers, state regulators, and other stakeholders to develop the following label changes for over-the-top use of dicamba on dicamba-tolerant cotton and soybeans through the 2020 growing season:

  • Only certified applicators may apply dicamba over the top (those working under the supervision of a certified applicator may no longer make applications)
  • 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 label to improve applicator awareness on the impact of low pH’s on the potential volatility of dicamba
  • Prohibit over-the-top application of dicamba on soybeans 45 days after planting after planting
  • Applications will be allowed only from 1 hour after sunrise to 2 hours before sunset
  • Enhanced tank clean-out instructions for the entire system
  • Label clean up and consistency to improve compliance and enforceability
  • Clarify training period for 2019 and beyond, ensuring consistency across all three products

Link to the US Environmental Protection Agency dicamba page: https://www.epa.gov/ingredients-used-pesticide-products/registration-dicamba-use-dicamba-tolerant-crops


Manufacturers of dicamba products will be providing training which will include the following topics:

  1. The use of buffers to reduce pesticide exposure to nontarget species
  2. Websites listed on the pesticide label including nozzles, tank mix partners, EPA Bulletins Live, and sensitive crop registry
  3. Weather conditions and timing of application to include wind speed, temperature, humidity, and time of day
  4. Sprayer system cleanout and approved tank mixes
  5. Recordkeeping requirements to include crop planting date, buffer requirement, sensitive crop awareness, product label, and time of day

Product Labels and Information

Below are links to the official product pages, which include access to product labels and additional information about each product.

BASF - Engenia®

Bayer - XtendiMax®

Corteva - FeXapan

Syngenta - Tavium®


Upcoming Live Training Events

There are no upcoming events.

In Person Training Registration Contacts

Companies provide training in Iowa. Click a link below to register for a specific public training session.

BASF - Register Online to attend.

Corteva Agriscience - Register Online to attend.

Bayer Crop Sciences - Register online to attend.