Rue, African (Peganum harmala)

glyphosate

Remarks Reported to control this plant, although data are lacking in the Pacific Northwest. Follow label instructions.

Site of action Group 9: inhibits EPSP synthase

Chemical family None generally accepted

imazapyr (Arsenal)

Rate 0.75 to 1 lb ae/a or as a 1% solution with methylated seed oil adjuvant

Time Apply to actively growing foliage after plants bolt and through the fall.

Remarks Always add the appropriate surfactant.

Caution Before using, note crop rotation restrictions.

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

Chemical family Imidazolinone

metsulfuron (Escort)

Rate 1.2 oz ai/a (2 oz/a)

Time Apply to actively growing plants.

Remarks Using a nonionic or silicone surfactant increases effectiveness.

Caution Apply only to non-cropland sites.

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

Chemical family Sulfonylurea