In response to the increasing problem of herbicide resistance in weeds, several agricultural seed and chemical companies have introduced new varieties of corn, soybean and cotton that are tolerant to the synthetic auxin herbicides 2,4-D or dicamba. For example, Dow AgroScience's Enlist trait confers tolerance to 2,4-D in corn, cotton and soybean, while Monsanto's Xtend trait confers tolerance to dicamba in cotton and soybean. While these new tools may help with the management of herbicide-resistant weed species, they require proper stewardship. There are numerous ornamental, vegetable and crop species that are especially sensitive to even low doses of 2,4-D and dicamba; therefore, applicators must be vigilant when spraying these herbicides to prevent off-target movement.
This page provides access to training and resources from University of Missouri Extension Weed Scientists to support proper stewardship of synthetic auxin herbicides. MU Extension offers two options for applicators to complete the federally and state mandated training that is required to purchase and/or use Engenia XtendiMax, or FeXapan. Applicators may attend an in-person training or complete an online course. Select "Events" to view a list of upcoming in-person training sessions. Select "Courses" to view a list of available options to complete the course online.
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News & articles
- Published: Wednesday, Oct. 31, 2018
COLUMBIA, Mo. – The annual University of Missouri Crop Management Conference offers updates on how 2018’s drought-to-downpour growing season affected crops, pests and disease, and provides insights on how trade affects agricultural commodity ...
- Published: Monday, Oct. 22, 2018
COLUMBIA, Mo. – Post-harvest is a good time for producers to review their liability insurance coverage, says University of Missouri economist Ray Massey. Recent issues with dicamba spray drift highlight the need for farmers to understand their ...
- Published: Wednesday, Aug. 8, 2018
COLUMBIA, Mo. – To make better bacon, feed a better soybean. Bryon Wiegand, University of Missouri food scientist, studies the use of Missouri’s high-oleic soybean oil in livestock rations. In a report at Soy Day, Wiegand joined MU faculty ...
- Published: Friday, July 20, 2018
COLUMBIA, Mo. – Researchers from University of Missouri Extension and the MU College of Agriculture, Food and Natural Resources share their work at the July 31 Show Me Soy School at Bay Farm Research Facility near Columbia. The Missouri Soybean ...
Synthetic Auxin Herbicide Applicator Training Program
Attention pesticide companies: If you need to enroll several employees in this course, your employees will have to register separately in their own name and using a unique email address. Separate registration is required for certification and ...
Synthetic Auxin Herbicide Applicator Training Program (Non-Certificate Option)
This self-paced, online course is intended for general audiences who wish to better understand proper application of synthetic auxin herbicides such as 2,4-D and dicamba. This course is for informational purposes only. Participants will not receive a ...