University of Illinois researchers have discovered another population of waterhemp with resistance to dicamba herbicides.

Co-author of the study Pat Tranel tells Brownfield while it was a low level of resistance, the population had never been sprayed with Dicamba or 2,4D in the past so they did not expect resistance to growth regulator herbicides.

“So it seems to have generalist resistance mechanisms that are not specific to any one herbicide. It really makes resistance management more challenging.

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