Kentucky

University of Kentucky Weed Science: https://weedscience.ca.uky.edu/

 

Herbicide resistant weeds in Kentucky

Updated November, 2016. Source: www.weedscience.org – Kentucky

Reading this list: Each weed with herbicide resistant populations in this state is listed. Underneath each species is a list of the unique resistant biotypes of that weed in the state, according to the herbicide group(s) they are resistant to.

Smooth pigweed

  • Group 2
  • Group 5

Johnsongrass

  • Group 1
  • Group 2

Horseweed

  • Group 9

Italian ryegrass

  • Group 1
  • Group 2

Giant ragweed

  • Group 9

Common ragweed

  • Group 9

Waterhemp

  • Group 9

Palmer amaranth

  • Group 9

Common chickweed

  • Group 2