Palmer amaranth could be the next glyphosate resistance weed problem for Ontario farmers. University of Arkansas weed scientist Jason Norsworthy calls it “pigweed on steroids.” Norsworthy, who first saw glyphosate-resistant palmer amaranth in Arkansas in 2006, says the weed can grow two to three inches a day after it reaches four inches tall. “You can… Read More
Tag: Jason Norsworthy
Palmer amaranth (Amaranthus palmeri) is known by some as “careless weed,” as negligent management quickens its already hasty invasiveness. It can also be incredibly difficult to control — a characteristic that has only worsened in the last few years, as its resistance to multiple-herbicide groups continues to evolve. According to The International Survey of Herbicide… Read More