Authority® First DF Herbicide

Spring Preemergence Treatment or Fall Application Treatment for a Clean Start in the Spring

Authority® First DF Herbicide offers ultimate preemergence control of glyphosate-resistant broadleaf weeds in soybeans. It also serves as the foundation preemergence herbicide for Roundup Ready® soybeans. Authority First DF herbicide exhibits excellent crop tolerance for preplant application up to three days after soybean planting. It may be tank mixed with other preplant herbicides for broader-spectrum broadleaf and grass control.

  • Residual broadleaf foundation for soybean weed control for an early, clean start
  • Dual mode of action helps prevent development of resistant weed populations
  • Preemergence soil herbicide program offers dual action to get fields off to a clean start
  • Effective in no-till, minimum-till and conventional-tillage soybeans for maximum flexibility
  • Outstanding residual start for a Roundup Ready® Soybean program to help maintain yield potential

“Authority First DF Herbicide is an extremely popular product for those guys doing a lot of ridge till and no-till with those seeing marestail issues…growers are raving about the level of control.”

Gail Stratman

Gail Testimonial

Authority First DF Herbicide Performance

Authority® First DF Herbicide Weed Spectrum

Broadleaf Weed Control and Suppression
  • Amaranth, palmer
  • Amaranth, spiny
  • Mustard, wild
  • Nightshade, eastern black
  • Nightshade, hairy
  • Nightshade, silverleaf
  • Pigweed:
    • Redroot
    • Smooth
    • Tumble
  • Poor Joe
  • Purslane, common
  • Pusley, Florida
  • Ragweed, common**
  • Ragweed, giant**
  • Senna, coffee
  • Sida, prickly (teaweed)
  • Smartweed, Pennsylvania
  • Smellmelon
  • Spurge, spotted
  • Starbur, bristly
  • Sunflower, common**
  • Thistle, Russian
  • Velvetleaf
  • Waterhemp, tall
  • Anoda, spurred
  • Begggarweed, Florida
  • Carpetweed
  • Cocklebur, common
  • Copperleaf, hophornbeam
  • Croton, tropic
  • Daisy, American
  • Dayflower, common
  • Galinsoga, hairy
  • Groundcherry, clammy
  • Groundcherry, cutleaf
  • Horsweeed (marestail)**
  • Jimsonweed
  • Kochia
  • Ladysthumb
  • Lambsquarters, common
  • Mallow, Venice
  • Mexicanweed
  • Morningglory:
    • Entireleaf
    • Ivyleaf
    • Palmleaf
    • Pitted*
    • Purple
    • Red
    • Smallflower
    • Tall

Grass Weed Control and Suppression
  • Barnyardgrass*
  • Broadleaf signalgrass
  • Crabgrass, large
  • Crabgrass, smooth
  • Crabgrass, southern*
  • Crowfootgrass*
  • Foxtail, giant*
  • Foxtail, green
  • Foxtail, yellow*
  • Goosegrass
  • Johnsongrass, seedling*
  • Orchardgrass
  • Panicum, fall
  • Panicum, Texas

*Indicates suppression or partial control only.

**Will not control ALS-resistant biotypes of these weed species.