2,4-D LV ester
Rate 2 lb ae/A
Time Apply at the early bud stage to actively growing plants.
Remarks Several species of lupine are poisonous to livestock.
Caution Do not graze until plants dry up after application. Avoid drift to sensitive crops.
Site of action Group 4: synthetic auxin
Chemical family Phenoxy acetic acid
metsulfuron (Escort)
Rate 0.9 oz ai/A (1.5 oz/A)
Time Apply to actively growing plants.
Remarks Use a surfactant to increase effectiveness. Spray to wet.
Caution Apply only to non-crop sites.
Site of action Group 2: acetolactate synthase (ALS) inhibitor
Chemical family Sulfonylurea
picloram (Tordon)
Rate 0.25 to 0.5 lb ae/A
Time Apply to actively growing lupine at the early bud stage.
Remarks Several species of lupine are poisonous to livestock.
Caution Most formulations are restricted-use herbicides. Do not graze until plants dry up after spray applications. See label for grazing restrictions. Do not contaminate water. Potatoes, beans, and many other crops are very sensitive to picloram. Do not use in diversified cropping areas. For rates above 0.5 lb ae/A (1 quart/A), apply only as a spot treatment not to exceed 25% of a landowner's acreage in a given watershed in a single season. Avoid drift to sensitive crops.
Site of action Group 4: synthetic auxin
Chemical family Pyridine