Alyssum, hoary (Berteroa incana)

2,4-D amine

Rate Broadcast treatment: 3 to 4 lb ae/a

Time Apply in spring to rosettes prior to bolting.

Remarks Repeated applications will be needed to fully control plants arising from the seedbank.

Caution Avoid drift to sensitive crops.

Site of action Group 4: synthetic auxin

Chemical family Phenoxy acetic acid

metsulfuron (Escort and others)

Rate 0.5 oz ai/a (0.5 to 1 oz/a)

Time Apply in spring to rosettes prior to bolting.

Remarks Add 0.25% by volume of nonionic surfactant to spray mixture. Application sites differ between products; consult labels.

Caution Avoid contacting sensitive crops. Apply only to pasture, rangeland, and non-crop sites.

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

Chemical family Sulfonylurea