Tennessee

University of Tennessee Extension: https://extension.tennessee.edu/Pages/ANR-CED.aspx

Southern Integrated Pest Management Center: http://www.sripmc.org/

 

Herbicide Resistant Weeds in Tennessee

Updated Oct. 2016. Source: www.weedscience.org – Tennessee

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.

Goosegrass

  • Group 3
  • Group 9

Common cocklebur

  • Group 2
  • Group 17

Palmer Amaranth

  • Group 2
  • Group 3
  • Group 9
  • Group 2 + Group 9
  • Group 9 + Group 14

Johnsongrass

  • Group 1

Common lambsquarters

  • Group 5

Horseweed/marestail

  • Group 9

Italian ryegrass

  • Group 1
  • Group 9

Giant ragweed

  • Group 9

Tall waterhemp

  • Group 2
  • Group 9

Annual bluegrass

  • Group 3
  • Group 9