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Authority® 480 herbicide / West is now registered for use on wheat.

Group 14

Authority® 480 herbicide / West

When you apply pre-emergent Authority® 480 herbicide, it’s because you’re after kochia and you mean business. But it’s not like the other weeds can just jump out of the way. Yes: Authority 480 herbicide controls kochia with powerful, extended Group 14 activity to protect peas, flax, and other crops. It also targets redroot pigweed, lamb’s-quarters, cleavers and wild buckwheat.

Quick Facts

  • Controls your toughest, yield-robbing broadleaf weeds. 
  • Apply pre-plant or pre-emergence to control weeds early and gain extra yield. 
  • Group 14 mode of action for managing weed resistance. 
  • Soil applied.
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Product Overview

Authority 480 herbicide is a powerful, flexible pre-emergent Group 14 herbicide that provides extended activity on challenging weeds like kochia, redroot pigweed, lamb’s-quarters, wild buckwheat and cleavers. Authority 480 herbicide can be tank-mixed with glyphosate.

As a Group 14, Authority 480 herbicide is active on the following resistant weeds: redroot pigweed (Groups 2 and 5), lamb’s-quarters (Group 2), cleavers (Groups 2 and 4), kochia (Groups 2, 4, 5 and 9) and wild buckwheat (Group 2).

One small case of Authority 480 herbicide treats 128 acres to 172 acres, with a convenient liquid formulation, compared to 80 acres for one large tote of competitive granular herbicide.


Check out the most common crops this product is used on and the pests it fights against.

Full crop listing

  • Chickpea
  • Field Peas
  • Flax
  • Soybeans
  • Faba Bean
  • Sunflower
  • Tame Mustard
  • Asparagus
  • Mint
  • Strawberry
  • Horseradish
  • Brassica Head and Stem
  • Brassica (cole) Leafy Vegetables
  • Tomatoes
  • Tree Nuts
  • Grapes
  • Berries
  • Apple
  • Wheat


  • Alberta
  • Saskatchewan
  • Manitoba
  • British Columbia

Product Specifications

Tech Specs

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Registered and Supported Tank Mixes: Nu-Image and other imazethapyr products. 

Trial Data

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Authority Comparison
authority cleavers
authority kochia
authority redroot pigweed


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