Henbane, black (Hycocyamus niger)

dicamba (Banvel)

Idaho only

Rate 0.125 to 0.375 lb ai/a (1 to 3 pints/a Banvel)

Time Apply when plants are in rosette stage of growth. Use higher rates when treating dense or tall vegetative growth.

Remarks This is a Sandoz Agro, Inc. 2(ee) recommendation for use only within Idaho.

Caution Avoid drift to sensitive crops.

Site of action Group 4: synthetic auxin

Chemical family Benzoic acid

metsulfuron (Escort and others)

Rate Escort: 0.3 to 0.45 oz ai/a (0.5 to 0.75 oz/a)

Time Apply to actively growing plants.

Remarks Using a nonionic or silicone surfactant will increase effectiveness. Application sites differ between products; consult label.

Caution Apply only to pasture, rangeland, and non-crop sites.

Site of action Group 2: acetolactate synthase (ALS) inhibitor

Chemical family Sulfonylurea

picloram (Tordon)

Rate 0.25 to 0.5 lb ai/a (1 to 2 pints/a Tordon)

Time Apply in spring when actively growing before full bloom, or in late summer.

Remarks Tank mix 1 lb ae/a of 2,4-D with the lower rate of picloram.

Caution Most formulations are restricted-use herbicides. Do not apply if circumstances favor movement from treatment site.

Site of action Group 4: synthetic auxin

Chemical family Pyridine