Kurt Vollmer, Weed Management Specialist | kvollmer@umd.edu
University of Maryland Extension
Results from the 2022 Maryland Weed Control Trials are now available. These trials evaluate crop injury (PHYGEN) and herbicide efficacy (CONTRO) for certain weed species. This data can be used to compare herbicide options crops including corn, soybean, and wheat. Each metric is based on a visual assessment on a 0 to 100% scale with 0 being no control/injury and 100 being complete control/plant death. Products with a control rating less than 55% offer poor to no weed control. Growers should use caution when selecting an herbicide program based on one year of data as environmental conditions and weed populations can vary across locations. A copy of this report can be accessed at https://extension.umd.edu/sites/extension.umd.edu/files/2023-07/2022%20Weed%20Control%20Results_FINAL.pdf or by using the QR code to the right, or by calling your local extension office for a copy. For more information on how to interpret this report, contact Dr. Kurt Vollmer (kvollmer@umd.edu).
