Testing Indaziflam for Restoring Cheatgrass (Bromus tectorum) Infested Montana Rangelands
By Ben Hauptman, Granite County Extension, Email Ben Hauptman Introduction In summer 2020 the active ingredient indaziflam (RejuvraTM) was approved by the Environmental Protection Agency for use on rangelands, CRP, and natural areas. Indaziflam’s mode of action inhibits cellulose biosynthesis in seedlings, making it an effective pre-emergent herbicide for annuals such as cheatgrass (Bromus tectorum), a non-native winter annual grass. Cheatgrass is the most widespread invasive plant in the western U.S., and it is problematic for many range managers throughout Montana. Ranchers and other land managers in Montana are interested in indaziflam as another tool for controlling cheatgrass. This project…