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Authority First

Quick Facts

  • Residual broadleaf foundation for soybean weed control
  • Dual mode of action helps prevent development of resistant weed populations
  • Effective in no-till, minimum-till and conventional-tillage
  • Outstanding residual start for a Roundup Ready® or conventional program
Type Title Download
SDS 2012-04-19 download PDF
Specimen Label 08-02-13 download PDF
Supplemental Label Reduced Rate Application Rates for Soybeans download PDF

Registered States:

AL, AR, DE, GA, IA, IL, IN, KS, KY, LA, MD, MI, MN, MO, MS, NC, ND, NE, NH, NJ, OH, OK, PA, SC, SD, TN, TX, VA, WI, WV

  • Soybeans
Broadleaf Weeds
  • Amaranthes
  • Beggarweed
  • Carpetweed
  • Common Cocklebur
  • Common Purslane
  • Common Ragweed
  • Common Sunflower
  • Copperleaf, Hophornbeam
  • Croton, Tropic
  • Daisy
  • Dayflower
  • Eastern Nightshade
  • Florida Beggarweed
  • Galinsoga
  • Giant Ragweed
  • Ground Cherry
  • Hairy Nightshade
  • Jimsonweed
  • Kochia
  • Ladysthumb
  • Lambsquarters
  • Marestail
  • Mexicanweed
  • Morningglory
  • Nightshades
  • Palmer Amaranth
  • Pennsylvania Smartweed
  • Pigweed, Redroot
  • Poorjoe
  • Prickly Sida
  • Purslane
  • Pusley
  • Ragweeds
  • Russian Thistle
  • Senna
  • Sicklepod
  • Smellmellon
  • Smooth Pigweed
  • Spiny Amaranth
  • Spurge
  • Spurred Anoda
  • Starbur
  • Teaweed
  • Thistle
  • Tumble Pigweed
  • Velvetleaf
  • Venice Mallow
  • Waterhemp
  • Wild Mustard
Grass Weeds
  • Barnyardgrass
  • Broadleaf Signalgrass
  • Crabgrass
  • Crabgrass, Large
  • Crabgrass, Smooth
  • Crowfootgrass
  • Foxtail Species
  • Foxtail, Giant
  • Foxtail, Green
  • Foxtail, Yellow
  • Goosegrass
  • Johnsongrass, Seedling
  • Orchardgrass
  • Panicum, Fall
  • Panicum, Texas
Sedges
  • Annual Sedge
  • Nutsedges
  • Purple Nutsedge
  • Yellow Nutsedge
Performance Data
Resources

Authority First Fact Sheet

Learn how Authority First can improve product performance, increase yields and improve your bottom line.

Authority First

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

Fall/Spring Burndown and Residual Weed Control on Soybeans

Best management practices on marestail, waterhemp, ragweeds, and other glyphosate resistant weeds

Manage Weed Resistance and Maximize Yield Using Authority First and Authority MTZ

University research shows the value of controlling weeds with Authority First and Authority MTZ DF to maximize yield