Illinois Dicamba Use on Soybeans: Training for Applicators

Dicamba-specific training is again required for anyone applying dicamba in 2021.  Please click on the links below for on-line and webinar training opportunities.  Completing any of these trainings will meet the requirement for dicamba training no matter which product you are applying to soybean.  

BASF (Engenia):  Applicator Training (

Bayer (XtendiMax):  Dicamba Training and Application Requirements | Roundup Ready® Xtend Crop System

Syngenta (Tavium):  Tavium Application and Stewardship | Syngenta US (


Details on Dicamba Registrations and Label Changes

On October 27, 2020, USEPA issued new registrations for XtendiMax and Engenia, two dicamba products whose labels were cancelled last July 31, 2020.  The Agency also extended the registration for Tavium; therefore, all these labels now expire in 2025.  Corteva has disconitued the sale of Fexepan in the U.S. and Canada.    
The main, new points in the product registrations and labels are outlined below, and also explained in the USEPA press release.  Additional emergency administrative rules for OTT dicamba on soybean within Illinois can be found in the IDA press release, and are listed below.
  • Requiring an approved pH-buffering agent (also called a Volatility Reduction Agent or VRA) be tank mixed with OTT dicamba products prior to all applications to control volatility.
  • Requiring a downwind buffer of 240 feet to protect sensitive areas, and 310 feet in areas where listed species are located. (IFCA Note:  To clarify, Illinois has 18 endangered species counties, see this map.  In these counties the downwind buffer to protect sensitive areas will be 310 feet and 57 feet on all other sides of the field.  All labels will still have a "do not spray" if sensitive crops are downwind.)
  • Prohibiting OTT application of dicamba on soybeans after June 20.
  • Prohibiting OTT application on dicamba soybeans if the air temperature at the field at the time of application is over 85 degrees, or if the National Weather Service's forecasted high temperature for the nearest locations for the day of applicaiton exceeds 85 degrees.  Refer to the Local National Weather Service forecasts at
  • The ability to use hooded sprayers to reduce the downwind buffer size.  A buffer of 110 feet can be used in counties not deemed to have endangeres species, and a buffer of 240 feet within counties that are designated as having endangered species.
The new labels are posted under the "Labels, Forms & Other Resources" link on this site.  

If you have questions about dicamba use, contact the Illinois Fertilizer & Chemical Association at 309-827-2774.