Missouri: Dicamba – 5 Requirements to Know Before You Purchase, Use

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The Missouri Department of Agriculture issued 24c Special Local Need labeling of Engenia, Xtendimax, and Fexapan in order to minimize the potential for off-target movement of dicamba, the active ingredient.  24c labeling is in addition to the full Section 3 federal label for these products. 

A certified applicator must possess and read both labels.  Engenia, Xtendimax, and Fexapan are the only registered products for dicamba-tolerant soybeans and dicamba-tolerant cotton.

This information is taken from the Department of Agriculture’s website with the addition of training information from University of Missouri Extension.

Engenia, Xtendimax, and Fexapan are restricted use products and under the MO 24c labeling are for sale to and use ONLY by certified applicators.  Non-certified applicators are prohibited from applying these products.

Mandatory synthetic auxin herbicide training for certified applicators prior to the purchase and/or use of these products.  Training options include web-based training or in-person training.  Web-based training is self-paced.  In-person training sessions will run from 9:00 a.m. to 11:30 a.m.  The fee for training both web and in-person is $30.  Advanced registration is required for in-person training.  Dates and locations for in-person training:

To register for web-based or in-person training or for more information, go to here. For questions about in-person training, call the MU Conference Office at 573-882-4349.

  1. Certified applicators must complete an online Dicamba Notice of Application form daily, prior to application.  The application form can be found here.
  2. These products cannot be applied before 7:30 a.m. or after 5:30 p.m.
  3. Cutoff dates are as follows:
    1. Use of ENGENIA, XTENDIMAX and FEXAPAN in dicamba-tolerant soybeans and dicamba-tolerant cotton is prohibited after June 1, 2018, in the following southeast Missouri counties: Dunklin, Pemiscot, New Madrid, Stoddard, Scott, Mississippi, Butler, Ripley, Bollinger and Cape Girardeau.
    2. Use of ENGENIA, XTENDIMAX and FEXAPAN in dicamba-tolerant soybeans and dicamba-tolerant cotton is prohibited after July 15, 2018, in all remaining Missouri counties.

More information on synthetic auxins from MU Weed Science here.

MO Department Agriculture links to the 24c labels.


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