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Updated Dicamba Information

The USEPA has approved revised labels for Engenia (EPA Reg. No. 7969-345), FeXapan (EPA Reg. No. 352-913), Tavium (EPA Reg. No. 100-1623), and Xtendimax (EPA Reg. No. 524-617). The manufacturers of these dicamba products voluntarily agreed to the additional requirements for their products.

Please note this is not an exhaustive list of label changes for each dicamba product. ODA encourages all applicators to study and note all requirements detailed for each specific product. For questions, please contact the ODA Pesticide and Fertilizer Regulation Section.

The changes include:

Previous Labeling — Applicators must follow the current labeled directions for use. These new labels supersede all prior labels for these products. Applicators must obtain a copy of the registrant’s new label and must have that label in their possession at the time of use.
Certified Applicator Requirement — Only certified applicators may purchase and apply the products. Those operating under the supervision of a certified applicator may no longer purchase or apply. Additionally, anyone who mixes, loads, or cleans dicamba application equipment, must become a certified applicator.
Dicamba/Auxin-Specific Training — Prior to applying these products in the 2019 growing season and each growing season thereafter, all applicators must complete dicamba or auxin-specific training. The applicator must complete annual dicamba or auxin-specific training provided by one of the registrants of a dicamba product approved for in-crop use with dicamba-tolerant crops. For an updated list of approved trainings, please visit our training page.
Increased Recordkeeping Requirements —  Private and Commercial applicators are required to maintain application records as outlined in OAC 901:5-11-10.  This information must be generated on the day of application and retained for 3 years.  In addition to Ohio’s recordkeeping requirements, the new dicamba labels also require applicators to record within 72 hours (previously 14 days): 
Sensitive Area Awareness Clean-out of Spray System Buffer Distance Calculation
Application Timing Air Temperature Nozzle Selection
Receipt of Purchase Proof of Training Start & Finishing Times
Planting Date Tank Mix Partners Product Labels
Wind Speed & Direction    
Temperature Inversions — Applications may only be made from 1 hour after sunrise until 2 hours before sunset.
Post-emergence Application Window — For dicamba-tolerant soybeans, you can only apply from planting through 45 days after planting or up until R1 (first bloom), whichever comes first.
Sensitive Crops/Areas — Applicators must be aware that the wind direction may vary during the application. If wind direction shifts such that the wind is blowing toward neighboring sensitive crops or residential areas, stop the application. Sensitive crops/areas include, but are not limited to, non-dicamba tolerant soybeans and cotton, tomatoes and other fruiting vegetables (EPA crop group 8), fruit trees, cucurbits (EPA crop group 9), grapes, beans, flowers, ornamentals, peas, potatoes, sunflower, tobacco, other broadleaf plants, and including plants in a greenhouse.
Endangered Species — Fields that exist in counties that may harbor certain endangered terrestrial dicot plant species will require a 110' downwind buffer and a 57' buffer on all other sides of the field. Applicators must consult http://www.epa.gov/espp/ for Endangered Species Protection Bulletins. Currently in Ohio, only Erie and Ottawa counties have endangered species protection areas for the Lakeside Daisy.
Wind Speed — Applications may only occur when wind speeds are between 3-10 miles per hour at boom height.
Spray System Equipment Clean-out — Spray equipment must be thoroughly cleaned before and after applications. The triple rinse procedure includes cleaning tanks, pumps, lines, filters, screens and nozzles with a strong detergent based sprayer cleaner.