Remarks Although PNW data are preliminary, foliar-applied imazapyr and cut-stem treatments of imazapyr, picloram, or triclopyr + 2,4-D gave good results in initial trials.
Site of action (imazapyr) Group 2: acetolactate synthase (ALS) inhibitor; (2,4-D, picloram, triclopyr) Group 4: synthetic auxin
Chemical family (imazapyr) imidazolinone; (2,4-D phenoxy acetic acid; (picloram, triclopyr) pyridine