Oklahoma

Herbicide resistant weeds in Oklahoma

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

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.

Kochia

  • Group 2
  • Group 9

Common cocklebur

  • Group 2

Waterhemp

  • Group 2
  • Group 9

Cheat (rye brome)

  • Group 2

Horseweed

  • Group 9