Lambsquarters, common
Common lambsquarters developed resistance to Group 5 herbicides (triazines) very early on in the history of herbicide resistance. It was first confirmed in the US in 1975 infesting corn, soybean, and nurseries. The species is very common throughout many regions of the US.
Herbicide resistant populations:
- Group 5
Locations of resistant populations:
Delaware, Illinois, Iowa, Maryland, Michigan, Minnesota, Kentucky, Pennsylvania, Tennessee, North Carolina, Virginia
Resources:
Common Lambsquarters – Weed ID Guide – University of Missouri
Lambsquarters Fact Sheet – HRAC
Management of Triazine Resistant Lambsquarters and Pigweed – Penn State University
Control of Lambsquarters in Corn and Soybean in Ohio – Ohio State University