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Group 14 , 15

Authority® Supreme herbicide / East

Your next line of defence against grassy weeds, broadleaf weeds and resistance in soybeans - Authority® Supreme herbicide. Delivering consistent, long-lasting pre-emergent control of grassy and broadleaf weeds in IP and herbicide-tolerant soybeans, Authority Supreme herbicide also provides highly effective resistance management with Group 14 and 15 chemistries.

Quick Facts

  • Pre-plant/pre-emergent extended control of grassy and broadleaf weeds 
  • Consistent performance on tough to control weeds
  • Multiple rate options: lower rate in herbicide-tolerant soybeans for critical early season weed control or higher rate for longer, extended weed control
  • Multiple modes of action for resistance management

Product Overview

Authority Supreme herbicide has long lasting residual control of key grass and broadleaf weeds. Its Group 14 and 15 chemistries help to slow the development of resistant weeds, including Group 2, 5 and 9 resistant weeds. Authority Supreme herbicide fits both herbicide-tolerant and Identity-Preserved (IP) soybeans and comes in a convenient, easy to use, liquid formulation.

Flexible rate options allow for a setup treatment or an extended control application. 


Full crop listing

  • Soybeans
  • Field Peas
  • Chickpea


  • New Brunswick
  • Newfoundland and Labrador
  • Nova Scotia
  • Ontario
  • Prince Edward Island
  • Quebec

Product Specifications

Tech Specs

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Registered and Supported Tank Mixes:

Authority Supreme herbicide can be mixed with one or more herbicide products, provided that the tank mix product labels do not prohibit such mixing. Tank mix Authority Supreme herbicide with labelled rates of glyphosate (that are registered for the same uses).

Crop Rotation:

Rotational Crop

Replant Interval (Months)







Corn, Field


Field pea










Spring and durum wheat


Sugar beets




Winter wheat



Application Information:

Application early (pre-plant) increases activation potential by spring showers. Post-seed application should be considered in higher disturbance situations. Apply at 10 gal/ac for maximum soil coverage, using medium to coarse droplets. For extended residual treatment, apply at 33 or 40 ac/jug, based on timing and soil characteristics. For setup treatment, apply at 50 ac/jug.  Apply with or without glyphosate. Apply with glyphosate if weeds are actively growing. Authority Supreme herbicide controls weeds germinating within soil barrier. Apply only once per 12 month period.

Rates and packaging: 2 x 8 L jugs per case. Each 8 L jug treats 33, 40 or 50 acres per jug.

Water volume: 10 gal/ac provides best uniform soil coverage with medium to coarse droplet sizes.

Rainfastness: N/A

Tank mixtures: Fill spray tank one-half to two-thirds full with water. With agitator operating, add the recommended amount of ingredients using the WAMLEGS order.


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When it comes to weed control in soybeans, Authority Supreme herbicide delivers powerful, extended pre-plant or pre-emergent control of a wide spectrum of tough broadleaf and grassy weeds. Authority Supreme herbicide is a top choice for soybean growers in both IP and herbicide tolerant systems. As a Group 14 and 15 product, Authority Supreme herbicide is a great solution for weeds resistant to Groups 2, 5 and 9 -- and a smart way to delay further resistance.

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