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. No news on the registration for FeXapan yet, but registration for this product would be possible since the XtendiMax registration has been approved. Corteva will likely provide more information on the status of FeXapan.
The main, new points in the product registrations and labels are outlined below, and also explained in the USEPA press release.
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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.
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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 29 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.)
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Prohibiting OTT application of dicamba on soybeans after June 30 and cotton after July 30. (IFCA Note: The cutoff date in Illinois in 2020 was June 20, later extended to June 25).
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The ability to use hooded sprayers to reduce the downwind buffer to 110 feet.
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Simplifying the label and use directions so that growers can more easily determine when and how to properly apply dicamba.
The new labels are posted under the "Labels, Forms & Other Resources" link on this site.
Dicamba-specific training will AGAIN be required for anyone applying dicamba in 2021. We expect classes will be offered on-line and in webinars.
As soon as training is available we will provide the links to the training on this site.
If you have questions about dicamba use, contact the Illinois Fertilizer & Chemical Association at 309-827-2774.