blog posts Experts sound alarm on herbicide resistance: For some weeds, we may have no good chemical options Jan 31, 2018 11:15 am by Country GuideIllinois in the News Share on Facebook Tweet Email Images Country Guide (Jan. 30) Adam Davis, a professor of crop sciences at Illinois, says Palmer amaranth and waterhemp have gone beyond mere 'hard-to-control weed' status Share on Facebook Tweet Email