Trade name(s) several
Manufacturer(s) Albaugh, Loveland Products
Formulation(s) 2 and 4 lb/gal soluble and emulsifiable concentrates formulated as amine salts, sodium salts, and esters.
Remarks A postemergence, selective, translocated phenoxy herbicide. Material is less phytotoxic to some crops.
Water solubility 825 ppm
Storage conditions Amine formulations are relatively stable, but esters depend on emulsifying system. Read each product label carefully.
Acute toxicity LD50 - 800 mg/kg
Action in plant Mimics natural plant hormones.
Site of action Group 4: synthetic auxin
Chemical family Phenoxy acetic acid
Koc Average is 110 mL/g for the acid, 1000 mL/g (estimated) for the butoxyethyl and isooctyl esters, and 20 mL/g (estimated) for the dimethylamine salt
Tim Prather
Revised March 2012
Total vegetation control with soil-residual herbicides is a process in which the addition of chemicals renders the soil unfit for plant growth. Soil-residual herbicides do not kill all animal and microbiological life in the soil.
Keep the following in mind when using soil-residual herbicides:
Tim Prather
Revised December 2009
Controlling undesirable plants on rangeland is an important part of an overall range management program. Undesirable plants use space, moisture, and nutrients that could be put to better use producing forage for grazing animals. Poisonous plants are an additional threat to animal health and productivity.
Andrew Hulting
Revised March 2013
Serious weed management issues in pastures are a symptom of a problem with the crop or site. These problems can include grazing methods, fertilization programs, forage species selection, and irrigation or water management.
Tim Miller
Revised September 2012
PEAS (GREEN OR ENGLISH)—General Weed Management Strategy
Peas are drilled in closely spaced rows early in spring, which limits weed emergence and species diversity. Most growers apply herbicides to suppress or eliminate weed competition, or potential contamination of harvested product. Subsequent crop rotations during the same season limit herbicide choices to those exhibiting brief soil residuals.
PEAS (GREEN OR ENGLISH)—Stale Seedbed Method
Andrew Hulting
Revised December 2012
CLOVERS—Red, White, Crimson, and Arrowleaf
Preplant
benefin (Balan DF)
Rate 1.2 to 1.5 lb ai/A (2 to 2.5 lb/A Balan DF)
Time Before planting clover, benefin must be incorporated into the top 2 to 3 inches of the seedbed.
Tim Prather
Revised December 2012
FORAGE ALFALFA—Annual Grass and Broadleaf Weeds in Establishing New Seedings
benefin (Balan DF)
Rate 1.2 to 1.5 lb ai/A (2 to 2.5 lb/A)
Time Apply to a clean, clod-free soil surface before planting, and incorporate 2 to 3 inches deep within 4 hours after application.
Tim Prather
Revised December 2012
2,4-D amine (several trade names)
Rate 0.7 to 2 lb ae/A
Time Depends on weeds to be controlled. Apply to grass when annual and biennial broadleaf weeds are small and actively growing, and established perennials are at bud stage, unless label indicates otherwise.
Andy Hulting and Ed Peachey
Revised December 2012
The Conservation Reserve Program (CRP) is designed to control erosion, improve water quality and enhance wildlife habitat on environmentally sensitive land by planting permanent crops. A combination of desirable plants including trees, grasses, legumes, and shrubs must be planted and maintained for the duration of the contract which usually runs for 10 to 15 years. CRP land may not be harvested or grazed by domestic animals except under emergency circumstances following natural disasters or certain other managed conditions.
Don Morishita and Drew Lyon
Revised December 2012
SPRING WHEAT—Preplant and Preemergence Weed Control
carfentrazone (Aim EC, Aim EW)
Rate 0.008 to 0.031 lb ai/A (0.5 to 2 fl oz Aim EC or EW)
Time Apply before, during, or after grain has been planted.
Andrew Hulting
Revised September 2012
WINTER WHEAT—West of the Cascades—Preplant Broadleaf Weed Control
saflufenacil (Sharpen powered by Kixor herbicide)
Rate 0.022-0.044 lb ai/A (1.0-2.0 oz/A Sharpen)
