If you have experienced dicamba drift related damage, please complete the Dicamba Damage Survey. The Minnesota Department of Agriculture (MDA) may use this information to help evaluate the impact of dicamba use in Minnesota. Please note that if you wish to request an MDA investigation, you will also need to complete the pesticide misuse complaint form or call the Pesticide Misuse Complaint line at 651-201-6333.
Dicamba is a selective, systemic, and plant growth regulator herbicide used to control preemergence and postemergence broadleaf weed control in corn and a variety of other food and feed crops, and in residential areas. In 2016, the United States of Environmental Protection Agency (EPA) conditionally approved the postemergence use of certain new dicamba products on dicamba tolerant (DT) soybeans. Previously, dicamba was registered for only preplant and pre-harvest applications to non-DT soybeans.
The active ingredient, dicamba is a highly volatile chemical that can damage non-target plant species through spray drift and/or volatilization. Misuse of dicamba products may cause unintended impacts such as serious damage to non-DT soybeans, other sensitive crops, and non-crop plants. New dicamba products are considered less volatile than previously registered dicamba products. Regarding use on DT soybeans, the EPA registration of XtendiMax and FeXapan will expire on November 9th, 2018 whereas Engenia registration will expire on December 20th, 2018. The Minnesota registration will expire on December 31st, 2017. The MDA will be closely reviewing the information collected during 2017 growing season to make decision on dicamba registration for the year of 2018.
Despite the conditional approval of new dicamba products with drift reduction agents and use restrictions in place prior, high numbers of physical drift and volatilization complaints from dicamba use have been reported in Minnesota and other parts of the US. Reports of crop damage have been received in MN that appear to be related to the use of certain dicamba products. Compliance concerns related to the use of dicamba products have also been received in MN.
The MDA investigates properly filed chemical misuse complaints. Inspectors are able to get on site and diagnose damage based on symptomology, collect records, and collect samples for laboratory analysis. Complaints must be put in writing according to the state law. To register a complaint please complete the Pesticide Misuse Complaint Form.