New Jersey

Weed Science Contacts in New Jersey:

Thierry Besancon – Assistant Extension Specialist in Weed Science

Rutgers University Extension – Commercial Agriculture:

Herbicide resistant weeds in New Jersey

Updated November, 2016. Source: Mark VanGessel, University of Delaware; – New Jersey

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 5 resistance

Livid amaranth

  • Group 2

Smooth crabgrass

  • Group 1


  • Group 9

Common ragweed

  • Group 9

Palmer amaranth

  • Group 9