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Group 2 , 4

AUTHORITY® ASSIST HERBICIDE

Use Authority® Assist herbicide as your foundational herbicide to control summer annual weeds like lambsquarters, pigweed, nightshade and kochia, and suppress foxtail, fall panicum, nutsedges and other invasive grasses.

Quick Facts

  • Multiple modes of action.
  • Excellent grass control.
  • Very soluble so it works well with light rain.
  • No pH restrictions, so there’s low risk for carryover to corn.
  • Complements low-cost, pre-grass herbicide in conventional soybean weed management programs.

Active ingredients

  • Sulfentrazone*
  • Imazethapyr*  

APPROVED FMC TANK MIX PRODUCTS FOR SELECT HERBICIDES

* Authority Assist herbicide contains 4 pounds of active ingredient per gallon of product (3.33 pounds a.i. of sulfentrazone and 0.67 pound a.i. of imazethapyr).

Product Overview

Small-seeded broadleaf weeds and grasses can steal yields from soybeans. Apply Authority Assist herbicide with Grass Assist as your foundation herbicide. It lowers the hammer on glyphosate-tolerant summer annual weeds like lambsquarters, pigweed, nightshade and kochia, as well as suppresses foxtail, fall panicum, nutsedges and other invasive grasses.

Crops

Authority Assist herbicide is registered for use on peanuts only in the following states: AL, AR, GA, LA, MS, NC, SC, TN and VA. 

Always refer to the product label for an official listing of crop usage, restrictions and precautions.

Full crop listing

  • Peanuts
  • Soybeans

State Registration


  • Alabama
  • Arkansas
  • Colorado
  • Delaware
  • Georgia
  • Idaho
  • Illinois
  • Indiana
  • Iowa
  • Kansas
  • Kentucky
  • Louisiana
  • Maryland
  • Michigan
  • Minnesota
  • Mississippi
  • Missouri
  • Montana
  • Nebraska
  • New Hampshire
  • New Jersey
  • North Carolina
  • North Dakota
  • Ohio
  • Oklahoma
  • Pennsylvania
  • South Carolina
  • South Dakota
  • Tennessee
  • Texas
  • Virginia
  • West Virginia
  • Wisconsin

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