Geranium, shiny (Geranium lucidum) and herb Robert (Geranium robertianum)

Remarks Although PNW data are preliminary, glufosinate, glyphosate, imazapic, imazapyr, metsulfuron, sulfometuron, and triclopyr + 2,4-D gave promising results in initial trials.

Site of action (imazapyr, imazapic, metsulfuron, sulfometuron) Group 2: acetolactate synthase (ALS) inhibitor; (glyphosate) Group 9: inhibits EPSP synthase; (triclopyr, 2,4-D) Group 4, synthetic auxin; Group 10: glutamine synthase inhibitor

Chemical family (imazapyr, imazapic) imidazolinone; (metsulfuron, sulfometuron) sulfonylurea; (glyphosate) none generally accepted; (2,4-D) Phenoxy acetic acid; (triclopyr) Pyridine; (glufosinate) Phosphinic acid