Weed Science at the University of Kentucky

The Weed Science Program is within the department of Plant and Soil Sciences, located in the College of Agriculture, Food and Environment at the University of Kentucky. The focus of our work is weed management in agronomic crops, pastures and roadsides of Kentucky.

Weed Science News

  • March 3, 2016

    The presence of Palmer amaranth (Amaranthus palmeri) and waterhemp (Amaranthus tuberculatus [syn rudis]) was limited except for a few localized areas of west Kentucky prior to the year 2000. Between 2005 and 2010 isolated problems with control of these Amaranthus species with glyphosate in grain crops began to develop and were reported in counties in west Kentucky adjacent to major rivers including the Mississippi, Ohio, Cumberland, and Green Rivers.

  • Common lambsquarter
    February 4, 2016

    LAWRENCE, Kan. — Today the Weed Science Society of American (WSSA) announced that new and updated educational materials for both weed scientists and the general public are now available for free download from the Society’s website.

    Free fact sheet on types of weeds

  • map
    November 12, 2015
    Glyphosate-resistant Palmer amaranth (Amaranthus palmeri) and waterhemp (Amaranthus tuberculatus) continue to spread across Kentucky. Initially these pigweed species were thought to be present primarily in the west end of the state (Purchase area and along the lower Ohio River region), but have now been found in over 50 counties throughout Kentucky. These sightings would indicate that Palmer amaranth and waterhemp continues to be a growing threat to grain crop production within the state.