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Summary: Giant ragweed is one of the most problematic weeds in the soybean producing areas of the US. Yield losses can approach 100% and development of populations that are resistant to ALS (Group 2), glyphosate (Group 9), and PPO (Group 14) herbicides have created additional challenges for minimizing the yield loss capability of this weed. This presentation will discuss various control methods for minimizing yield losses and weed seed production. It will highlight the importance of proper burndown herbicide selection, postemergence application timing, and the integration of burndown, residual, and postemergence herbicides for effective seasonlong control.
United Soybean Board (USB) farmer-leaders develop and maintain partnerships with U.S. land grant universities and U.S. ag-focused research organizations such as the Plant Management Network to increase the transfer of checkoff-funded applied and practical production research information to U.S. soybean farmers. USB neither recommends nor discourages the implementation of any advice contained herein, and is not liable for the use or misuse of the information provided.