Time Apply as pea tolerance increases, as waxes develop on leaf surfaces.
imazethapyr (Pursuit and others)
Rate 0.0469 lb ai/A (3 fl oz/A Pursuit)
Time Preplant incorporate within 1 week before planting. May apply up to one month before no-till planting.
Remarks Apply only once per year. Do not incorporate deeper than 3 inches. Crop rotation is 18 months for sweet corn, oat and sorghum; 26 months for potato.
maleic hydrazide (Royal MH-30)
Rate 2 lb ai/A (1.33 gal/A)
Time Apply when bulbs are fully mature, with soft necks and five to eight green leaves, or when about 50% of the tops have fallen but are still green.
bromoxynil (Buctril, Broclean, Brox 2EC, or Buctril 4EC)
Idaho and east of the Cascades, dry bulb onions only
Rate 0.25 to 0.38 lb ai/A (1 to 1.5 pints/A) for Buctril, Broclean, and Brox 2EC. Use 0.25 to 0.375 lb ai/A (0.5 to 0.75 pints/A) for Buctril 4EC.
dimethenamid-P (Outlook)
Onions (dry bulb and green), garlic, and dry bulb shallots
Rate 0.56 to 0.84 lb ai/A (12 to 18 fl oz/A) on coarse soils and 0.84 to 0.98 lb ai/A (18 to 21 fl oz/A) in medium-texture or fine soils. May be applied in a single application. Do not exceed 21 fl oz/A per season.
bensulide (Prefar 4-E)
Not for use in Willamette Valley of Oregon; garlic, dry bulb onions and shallots only (Idaho and Oregon only)
Rate 5 to 6 lb ai/A (5 to 6 quarts/A)
clethodim (Select or Prism)
Rate 0.094 to 0.125 lb ai/a (6 to 8 oz/a Select), depending on target weed species and growth stage.
Time Apply to actively growing grass weeds, including annual bluegrass, at growth stages indicated on label.
benefin (Balan)
Lettuce only, direct-seeded and transplanted
Rate 1.2 to 1.5 lb ai/a (2 to 2.5 lb/a Balan)
Time Apply from 10 weeks to just before planting; incorporate within 8 hr by cross-disking or with a power-takeoff rotary tiller.
Rate 0.281 to 0.375 lb ai/A (1.5 to 2 pints/A Broclean)
Time Apply postemergence to weeds less than 4-leaf and 2 inches tall, preferably to weeds in the cotyledon stage.
Remarks Finish treatments before garlic is 12 inches tall. Use higher rate on larger weeds. Can be applied through automated sprinkler irrigation. PHI is 112 days.
