11.7.117 Join the conversation about herbicide weed resistance in episode 46 entitled, “The Challenge That Will Not Wait”. Drew Lyon, extension weed specialist at Washington State University and Scott Yates, director of communications and producer relations for the Washington Grain Commission discuss the evolving challenge, including how natural selection—a concept first raised by Charles Darwin about evolution—can be applied to weeds. Lyon believes farmers must use all the tools in their toolbox, including targeted tillage, to successfully overcome herbicides that are no longer effective.