South Dakota

South Dakota State University Extension:

https://www.sdstate.edu/agronomy-horticulture-plant-science/sdsu-extension-agronomy-horticulture-and-plant-science

Herbicide resistant weeds in South Dakota

Updated November, 2016. Source: Paul Johnson, South Dakota State University; www.weedscience.org – South Dakota

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 sunflower

  • Group 2

Common ragweed

  • Group 9

Wild oat

  • Group 1
  • Group 2
  • Group 1 + 2

Waterhemp

  • Group 9

Horseweed

  • Group 9

Palmer amaranth

  • Group 9