Weed Management Handbook

clodinafop (Discover NG, NextStep NG)

Rate 0.05 to 0.063 lb ai/A (12.8 to 16 oz/A). Methylated seed oil may be added with clodinafop at 2 pints/100 gal of spray volume mixture.

Time Apply to winter wheat from the 2-leaf to preboot stage. Do not apply to winter wheat in the fall. Apply to wild oat with one to six leaves on the main stem, and to Italian ryegrass with one to five leaves on the main stem.

imazamox (Beyond)

Clearfield wheat only

Rate 0.031 to 0.047 lb ai/A (4 to 6 oz/A Beyond)

2,4-D (several trade names)

Rate 0.5 to 1.4 lb ae/A

Time Apply when grain is in the hard dough stage, and the green color is gone from stem nodes.

Remarks Controls weeds that will interfere with harvest, and suppresses perennial weeds. Preharvest interval is 7 days.

clopyralid (Stinger)

Rate 0.094 to 0.125 lb ae/A (0.25 to 0.33 pint/A Stinger)

Time Apply from 3-leaf up to early boot stage of winter wheat growth. Apply to actively growing weeds. Only weeds emerged at the time of application will be affected.

Remarks To control perennial weeds such as Canada thistle, use the 0.33 pint/A rate.

flumioxazin (Valor EZ)

Rate 0.0637 lb ai/A (2.0 oz/A Valor EZ)

sulfosulfuron (Outrider)

Rate 0.031 lb ai/A (0.67 oz/A product) plus 0.5% nonionic surfactant

Time Spring, postemergence to wheat and quackgrass up to the jointing stage of growth.

Remarks Apply in early spring when quackgrass has recovered from cold weather, when most foliage is green, not red or purple.

Summer fallow and postharvest

clopyralid (Stinger and other trade names)

Rate 0.125 to 0.250 lb ae/A (0.33 to 0.66 pint/A Stinger)

Time Apply to actively growing weeds from rosette up to bud stage.

Remarks Only weeds emerged at time of application will be affected.

Summer fallow or postharvest

2,4-D amine (various trade names)

Rate 1.0 to 2.0 lb ae/A

Time Apply when weeds are in the bud to early bloom stage or while in good vegetative growth.

2,4-D (various trade names)

Rate 0.5 lb ae/A

Time Apply when grain is in the dough stage.

Remarks To control weeds that will interfere with harvest or to suppress perennial weeds.

Caution Do not apply to fields underseeded to legumes. Do not graze treated grain field within 14 days after treatment.

glyphosate (various trade names)

Rate 33 to 75% solution (2 to 12 quarts formulated herbicide + 1 gal water)

Time Ropewick after volunteer rye heads and is 6 inches above wheat, but before wheat heads.

Remarks Apply at least 35 days before harvest.