Marestail is a herbicide-resistant weed found across the Midwest. The weed typically begins its growing season in the fall, survives over winter and is still present in spring. It can also start its growing season in spring. So, burndown applications are important for controlling marestail, especially because it’s capable of reducing soybean yield by up to 80%.1
1Integrated Crop Management News and Iowa State University Extension and Outreach 2021. 2020 Summary of Herbicide Evaluations for Marestail (Horseweed) Control in Soybeans. https://crops.extension.iastate.edu/cropnews/2021/02/2020-summary-herbicide-evaluations-marestail-horseweed-control-soybean
2Integrated Crop Management News and Iowa State University Extension and Outreach 2017. Fall Marestail (Horseweed) Management. https://crops.extension.iastate.edu/cropnews/2017/10/fall-marestail-horseweed-management
3Penn State Extension 2017. Marestail (Horseweed) Management. https://extension.psu.edu/marestail-horseweed-management
4Nebraska Institute of Agriculture and Natural Resources 2016. Fall is Optimal for Marestail Management. https://cropwatch.unl.edu/2016/fall-optimal-marestail-management
The transgenic soybean event in Enlist E3® soybeans is jointly developed and owned by Corteva Agriscience LLC and MS Technologies, L.L.C. Enlist Duo® and Enlist One® herbicides are not registered for sale or use in all states or counties. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your area. Enlist Duo and Enlist One herbicides are the only 2,4-D products authorized for use with Enlist® crops. Consult Enlist herbicide labels for weed species controlled. Elevore®, EverpreX®, Kyber™, Resicore® and SureStart® II are not registered for sale or use in all states. Resicore and SureStart II are not available for sale, distribution or use in Nassau and Suffolk counties in the state of New York. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your state. Consult the label before purchase or use for full details. Always read and follow label directions.