University of Illinois weed scientists discover two new mutations that make PPO-inhibitor-resistant Palmer amaranth more complex than previously defined.
Iowa is home to 17 different species of herbicide-tolerant weeds, with the most troublesome probably waterhemp, giant ragweed and marestail.
Farmers are facing a growing number of resistant weeds across the country, and it turns out there's a reason you get surprised.
Troublesome weed that's the scourge of the south has found its way into the Midwest.
Stopping, and preventing, weed resistance is possible, provided you follow a few basic tactics.