Glyphosate-resistant Palmer amaranth has been confirmed for the first time in Nebraska.
Greg Kruger, University of Nebraska cropping systems specialist, says Palmer amaranth populations taken from fields in southwest Nebraska have shown various levels of glyphosate resistance.
“This is the first time that we’ve found it in Nebraska. We seem to be kind of on the northern and western corner of where this particular problem has been reported to this point,” Kruger says.
Palmer amaranth has been present in southern Nebraska for some time and glyphosate has been effective in controlling it. But Kruger says farmers will now have to be more diligent in the way they manage the weed.
“Those guys that don’t have it and are dealing with Palmer amaranth should certainly take preventative steps to managing it,” he says, “and those guys that are managing glyphosate resistance should definitely take every caution that they can to make sure they’re doing a thorough job of cleaning out those fields so that the problem doesn’t blow up on them.”
Palmer amaranth continues to cause significant problems in the Mid-South and has rapidly spread throughout the Midwest. Nebraska is the 26th state to report glyphosate-resistant Palmer amaranth.
Source: www.brownfieldagnews.com