Common Ragweed is one of the three major glyphosate-resistant weeds in the Northern Plains. University of Minnesota-North Dakota State University Extension Sugarbeet Agronomist Tom Peters says the timing of herbicide application could make all the difference. “Our most important herbicide is called Stinger and Stinger is still working, but one of my messages is to make sure that we keep weed size under two inches.” Application rates make up the other half of the equation. “Weed control’s not the area to save money,” said Peters. “Especially with weeds like ragweed that if it goes to seed, that seed can be viable for 20 years. We’ve got to get out there early and we have to use the appropriate rates.”
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