Keystone® herbicide

Keystone® herbicide is for corn growers who value the consistent performance that acetochlor and atrazine has provided over the years and that need the added small seeded broadleaf weed control that Keystone provides.

Keystone is a dependable, soil-applied herbicide that delivers consistent control of a wide spectrum of grasses and broadleaf weeds, including foxtails, barnyardgrass, crabgrass, waterhemp, lambsquarters, pigweeds, nightshade and many more.

Unlike some competitive products, Keystone can be integrated with other herbicides such as Hornet® WDG, to enhance its one-pass control and is supported by Dow AgroSciences team of crop protection experts.
Benefits
  • Excellent control of annual grasses
  • Effective control of small-seeded broadleaf weeds
  • Requires only 1/4 inch of rain for activation
  • Can be applied from early preplant to early postemergence
  • Fits conventional, reduced till and no-till corn production systems
  • Can be used alone or in combination with many pre and postemergence corn herbicides
Crops
  • Corn (All Types)
  • Corn, Field
  • Corn, For Seed
  • Corn, Glufosinate-ammonium Tolerant
  • Corn, Imidazolinone Tolerant
  • Corn, Pop
  • Corn, Silage
  • Corn, Sweet
  • Crops, Unspecified
  • No-tillage Systems
  • Reduced Tillage System
  • Weeds
    • Barnyardgrass/Watergrass (Echinochloa crus-galli)
    • Beggarweed, Florida (Desmodium tortuosum)
    • Carpetweed (Mollugo verticillata)
    • Cocklebur (Xanthium spp.)
    • Crabgrass (Digitaria spp.)
    • Crowfootgrass (Dactyloctenium aegyptium)
    • Cupgrass, Southwestern (Eriochloa gracilis)
    • Cupgrass, Woolly (Eriochloa villosa)
    • Foxtail, Giant (Setaria faberi)
    • Foxtail, Green (Setaria viridis)
    • Foxtail, Robust Purple (Setaria viridis var. robusta-purpurpea)
    • Foxtail, Robust White (Setaria viridis var. robusta-alba)
    • Foxtail, Yellow (Pennisetum glaucum)
    • Galinsoga (Galinsoga spp.)
    • Goosegrass (Eleusine indica)
    • Jimsonweed (Datura stramonium)
    • Johnsongrass, Seedling (Sorghum halepense)
    • Kochia (Kochia scoparia)
    • Lambsquarters (Chenopodium spp.)
    • Lambsquarters, Common (Chenopodium album)
    • Lambsquarters, Triazine Resistant (Chenopodium spp.)
    • Millet, Foxtail (Setaria italica)
    • Millet, Wild-proso/Proso Millet, Volunteer (Panicum miliaceum)
    • Morningglory (Ipomoea spp.)
    • Nightshade, Black (Solanum nigrum)
    • Nightshade, Hairy (Solanum sarrachoides (S. villosum))
    • Nutsedge, Yellow (Cyperus esculentus)
    • Panicum, Browntop (Panicum fasciculatum)
    • Panicum, Fall (Panicum dichotomiflorum)
    • Panicum, Texas (Panicum texanum)
    • Pigweed (Amaranthus spp.)
    • Pigweed, Redroot (Amaranthus retroflexus)
    • Pigweed, Triazine Resistant (Amaranthus spp.)
    • Purslane, Common (Portulaca oleracea)
    • Pusley, Florida (Richardia scabra)
    • Pusley, Florida (Antennaria spp.)
    • Ragweed, Common (Ambrosia elatior)
    • Ragweed, Common/Short (Ambrosia artemisiifolia)
    • Ragweed, Giant (Ambrosia trifida)
    • Rice, including Red Rice (Oryza sativa)
    • Sandbur, Field (Cenchrus incertus (C. pauciflorus))
    • Shattercane (Sorghum bicolor)
    • Sicklepod (Cassia obtusifolia (Senna obtusifolia))
    • Sida, Prickly/Spiny (Sida spinosa)
    • Signalgrass, Broadleaf (Brachiaria platyphylla)
    • Smartweed (Polygonum spp.)
    • Sprangletop, Red (Leptochloa filiformis)
    • Sunflower, Common/Wild (Helianthus annuus)
    • Velvetleaf (Abutilon theophrasti)
    • Velvetleaf, Triazine Resistant (Abutilon theophrasti)
    • Waterhemp (Amaranthus spp.)
    • Waterhemp, Tall (Amaranthus tuberculatus)
    • Waterhemp, Triazine Resistant (Amaranthus spp.)
    • Weeds, Unspecified ()
    • Witchgrass (Panicum capillare)
    State Registrations
    Teal
    Available in State
    Gray
    Not Available in State
    • Alabama
    • Arkansas
    • Colorado
    • Connecticut
    • Delaware
    • Georgia
    • Iowa
    • Idaho
    • Illinois
    • Indiana
    • Kansas
    • Kentucky
    • Louisiana
    • Massachusetts
    • Maryland
    • Maine
    • Michigan
    • Minnesota
    • Missouri
    • Mississippi
    • Montana
    • North Carolina
    • North Dakota
    • Nebraska
    • New Jersey
    • New Mexico
    • New York
    • Ohio
    • Oklahoma
    • Pennsylvania
    • Rhode Island
    • South Dakota
    • Tennessee
    • Texas
    • Utah
    • Virginia
    • Vermont
    • Washington
    • Wisconsin
    • West Virginia
    • Wyoming