Weed Management Handbook

glyphosate

Rate Up to 1.5 lb ae/A

Time Apply when weeds are actively growing, prior to last cutting in alfalfa stand where crop destruction is acceptable.

glyphosate

Rate 2.25 to 3.75 lb ae/A. For non-sodded quackgrass, use 0.75 to 1.5 lb ae/A. For sodded quackgrass, use 1.5 to 2.25 lb ae/A.

Time Apply preplant to full-grown weeds at least 10 days before planting the crop or as a spot treatment in the crop. Refer to label for growth stage of perennial weeds.

Remarks Use highest rate on field bindweed.

glyphosate

Rate 0.0625 to 0.075 lb ae/A

Time Apply as a spot treatment to actively growing dodder in non-Roundup Ready alfalfa.

Remarks A properly calibrated sprayer is required to make an accurate application.

flumioxazin (Chateau)

Rate 0.6375 lb ai/A (4 oz/A Chateau)

Time Apply preemergence to the weeds.

carfentrazone (Aim EC)

Rate 0.008 to 0.04 lb ai/A (0.5 to 2.5 oz/A Aim EC)

Time Apply in the fall after the alfalfa is dormant or in spring before spring growth.

Remarks Broadcast applications are to be made to dormant alfalfa established for at least 1 year. See the Airm EC label for recommended adjuvants.

clethodim (Select, Select 2EC, Select Max, Section Three, Intensity, or Intensity One)

Rate Select 2EC, or Intensity: use 0.094 to 0.125 lb ai/A (6 to 8 fl oz/A product). Section Three: use 0.094 to 0.24 lb ai/A (4 to 10.5 fl oz/A product). Select Max or Intensity One: use 0.07 to 0.24 lb ai/A (9 to 32 fl oz/A product).

Time Apply to actively growing annual or perennial grasses at stage of grass growth indicated on label.

sethoxydim (Poast or Poast Plus)

Rate 0.19 to 0.47 lb ai/A (1 to 2.5 pints/A Poast)

Time Apply to actively growing annual or perennial grasses at stage of grass growth indicated on label.

clethodim (Select 2EC, Select Max, Section Three, Intensity, or Intensity One)

Rate Select 2EC, or Intensity: use 0.094 to 0.125 lb ai/A (6 to 8 fl oz/A product). Section Three: use 0.094 to 0.24 lb ai/A (4 to 10.5 fl oz/A product). Select Max or Intensity One: use 0.07 to 0.24 lb ai/A (9 to 32 fl oz/A product).

Time Apply to actively growing annual or perennial grasses at the stage of grass growth indicated on label.

2,4-DB (Butyrac 200 or Butoxone)

Rate 0.5 to 1.5 lb ae/A (1 to 3 quarts/A Butyrac 200)

Time Apply postemergence to seedling weeds less than 3 inches tall. See label for size of alfalfa when treating.