Authority® XL Herbicide

Long-Lasting Residual Control of Small- and Large-Seeded Broadleaf Weeds

Apply Authority® XL herbicide in the spring to start fields off clean and take control of weeds like marestail, waterhemp, lambsquarters and ragweed. It's the ultimate long-lasting residual to manage glyphosate-resistant weeds and protect fields through summer.

Authority XL herbicide is also ideal as an early fall burndown after harvest to control winter annuals.

  • Allows for earlier planting in no-till soybeans
  • Helps increase yield potential by keeping fields free of weeds
  • Facilitates more timely Roundup® herbicide applications in Roundup Ready® soybeans
  • Reduces selection pressure for glyphosate- and ALS- tolerant weed biotypes
  • Extends weed spectrum and burndown when weeds have already emerged when added to Roundup and/or 2,4D LVE herbicides

“The first thing that really impressed me with Authority XL herbicide was the residual. We put it down…and we'd have a clean slate to start our crop with and would continue to keep the field clean until it was close to canopy.”

Ben Kirchhoff, Blackburn, MO

Ben Kirchhoff Testimonial

Authority XL Herbicide Performance

Authority® XL Herbicide Weed Spectrum

Controls
  • Carpetweed
  • Chickweed**
  • Cocklebur*
  • Copperleaf, Hophornbeam
  • Copperleaf, Virginia
  • Florida beggarweed
  • Jimsonweed
  • Kochia
  • Lambsquarters
  • Mallow, Venice
  • Marestail
  • Morningglory
    • Annual
    • Ivyleaf
    • Entireleaf
    • Pitted*
    • Smallflower
    • Tall
  • Mustard, wild
  • Nutsedge, purple
  • Nutsedge, yellow
  • Pigweed
    • Palmer amaranth
    • Redroot
    • Smooth
    • Spiny amaranth
  • Poinsettia, wild
  • Prickly sida (teaweed)
  • Purslane, common
  • Ragweed, common
  • Ragweed, giant*
  • Russian thistle
  • Senna, coffee
  • Smartweed (annual)
  • Spurge, spotted
  • Sunflowers, wild
  • Velvetleaf
  • Waterhemp

Suppresses
  • Barnyardgrass
  • Burcucumber
  • Crabgrass
  • Foxtail, species
  • Goosegrass
  • Johnsongrass, seedling
  • Mexicanweed
  • Panicum, Texas and fall
  • Sicklepod
  • Signalgrass, broadleaf

*Weed species which can germinate deep in the soil, such as pitted morningglory, cocklebur and giant ragweed or other weeds, such as nutsedge, which may emerge at various times during the growing season, may require cultivation or a follow-up application of postemergence herbicides.

**To deliver enhanced control the addition of Roundup or 2,4-D herbicides are recommended.