diflufenzopyr + dicamba (Overdrive)
Rate 0.175 to 0.35 lb ae/A (4 to 8 oz/A)
Time Apply to actively growing plants.
Remarks For improved uptake if weeds are under moisture or temperature stress, use a nonionic surfactant or a methylated seed oil.
Caution Do not plant any crop within 30 days of application. Do not exceed 10 oz/A of Overdrive per season.
Site of action (diflufenzopyr) Group 19: inhibits indoleacetic acid transport; (dicamba) Group 4: synthetic auxin
Chemical family (diflufenzopyr) semicarbazone; (dicamba) benzoic acid
glyphosate or clopyralid (Stinger or Transline) or picloram (Tordon)
Remarks Reported to control this plant, although data are lacking in the Pacific Northwest. Follow label instructions.
Site of action (glyphosate) Group 9: inhibits EPSP synthase; (clopyralid and picloram) Group 4: synthetic auxin
Chemical family (glyphosate) none generally accepted; (clopyralid and picloram) pyridine
Bugloss, annual (Anchusa arvensis) and small or common (Anchusa officinalis)
Remarks Although PNW data are preliminary, initial data indicate that 2,4-D and 2,4-D + dicamba may provide some control when applied prior to flowering and mixed with nonionic surfactant.
Site of action (2,4-D, dicamba) Group 4: synthetic auxin
Chemical family (2,4-D) phenoxy acetic acid; (dicamba) benzoic acid