Trade name(s) Roundup, Rodeo, Kleenup, Accord, Honcho, E-Z-Ject, Jury, Mirage, Protocol, Rattler, Ruler, Silhouette, Glypro, Glyphomax, AquaNeat, Touchdown, Glyphosate, Durango, RT Master, and many others
Manufacturer(s) Monsanto Co., Dow AgroSciences, Syngenta, DuPont, and others
Formulation(s) 1.23, 2, 3, 3.7, 4, 4.17, 4.75, and 5 lb/gal acid equivalent; 64.9% and 85% acid equivalent soluble powder.
Remarks A nonselective translocated herbicide with no apparent soil activity. Rain within 6 hours after application may reduce effectiveness. Glyphosate translocates to roots and rhizomes of perennial weeds. Complete control may require retreatment. Low-volume applications are most effective.
Water solubility 12,000 ppm
Storage conditions Store between -20° and 120°F.
Acute toxicity LD50 - 5,400 mg/kg
Action in plant Inhibits three amino acids and protein synthesis.
Site of action Group 9: inhibits EPSP synthase
Chemical family None generally accepted
Koc Average is 24,000 mL/g (estimated)
Joe DeFrancesco
Revised March 2013
Boysenberry; Loganberry; blackberries (Marion, Evergreen and other cultivars); and red and black raspberries
BLACKBERRIES AND RASPBERRIES—Site Preparation
glyphosate (numerous product names)
Rate Consult labels
Ed Peachey
Revised March 2013
(Note: Some clones may be sensitive to certain herbicides)
GRAPES—Weed and Vegetation Management
General strategy Vegetation management in vineyards is determined by site-specific environmental factors. Weed competition and interference must be minimized within the row while trafficability and soil conservation are required between rows (see Section L.Vegetation Management in Orchards, Vineyards, and Berries in this handbook).
Ed Peachey
Revised March 2013
Pome fruits: apples and pears
Stone fruits: apricots, peaches, nectarines, cherries, prunes, plums
Nuts: hazelnuts, walnuts, and chestnuts
Quick Reference Guide to Herbicides Labeled for Use in Fruit and Nut Crops
Don Morishita
Revised March 2013
Note All rates listed are stated as broadcast equivalent (i.e., the amount that would be required for weed control if broadcast sprayed between rows as well as in the row). If sugar beet herbicides are applied in a band, the amount required for 1 acre of beets can be calculated as: broadcast equivalent x (band width ÷ distance between rows).
SUGAR BEETS—Annual Grass and Broadleaf Weeds
cycloate (Ro-Neet SB)
Pamela J.S. Hutchinson
Revised March 2013
POTATOES—Volunteer Grain, Weed, or Grass Cover Crop Control before Planting Potatoes
carfentrazone (Aim EC)
Rate Up to 0.031 lb ai/A (2 fl oz Aim EC)
Time Apply before potatoes have been planted.
Rick Boydston
Revised March 2013
MINT—Annual Grass and Broadleaf Weeds in New Plantings and Established Crop
sulfentrazone (Spartan 4F)
Rate 0.14 to 0.375 lb ai/A (4.5 to 12 fl oz/A product)
Rick Boydston
Revised March 2013
HOPS—Annual Grass and Broadleaf Weeds
flumioxazin (Chateau WDG)
Rate 0.19 lb ai/A (6 oz product).
Time Apply to dormant hops January thru March in a 1- to 1.5-foot band to each side of the hop row. Rain following application will improve preemergence weed control.
Ed Peachey
Revised March 2013
CORN—Herbicide-resistant Corn
Herbicide-resistant field corn is now commonly grown in the Pacific Northwest. There are four major types of herbicide resistant corn: some that are genetically engineered; and some that are developed by genetic selection of tolerant corn individuals and/or varieties. Failure to apply the correct herbicide to the correct crop will result in serious injury to the corn. Refer to the appropriate herbicide label for guidelines on how to use each product on herbicide-resistant corn.
Dan Ball
Revised March 2013
CANOLA—Annual Grass and Some Broadleaf Weeds
ethalfluralin (Sonalan)
Rate 0.56 to 0.938 lb ai/A (1.5 to 2.5 pints/A Sonalan HFP)
Time Apply preplant and incorporate following label instructions.
Caution Do not exceed labeled rates because crop may be injured. Do not graze crop grown in treated soil.
Tim Prather
Revised December 2012
2,4-DB (Butyrac or Butoxone)
Rate 0.5 lb ae/A
Time Apply after trefoil has at least two true leaves.
Remarks Controls certain annual broadleaf weeds in new stands. Weeds should be small at the time of application.
