• The world's first CoAXium® barley variety
  • Tolerant to Aggressor® (Group 1) herbicide
  • Derived from popular variety Compass
  • Mid season maturity, slightly later than Compass, similar to RGT Planet
  • Wide adaptation but particularly suited to low-medium rainfall or Mallee type environments
  • Agronomically very similar to Compass
  • Has entered the Grains Australia malt accreditation program but is currently deliverable as Barley/Feed

Breeders comments

Titan AX is the first barley variety in the world to carry tolerance to Aggressor® herbicide (Group 1, Quizalofop-P-Ethyl), which allows growers to control susceptible populations of barley grass, brome grass, annual ryegrass, wild oats and other grass weeds in the barley phase of the rotation; offering an alternative to Clearfield® technology which growers have relied on for some time now.

Opportunistically discovered by Eyre Peninsula farmer Shannan Larwood in 2010, and further developed by the University of Adelaide, this novel herbicide tolerance trait has been bred into a range of widely adapted, high yielding backgrounds by the University of Adelaide and AGT; with Titan AX being the first variety to be released.

Titan AX (tested as AGTB0325) is derived from widely adapted and popular variety Compass, a plant type that particularly lends itself to low-medium rainfall or Mallee style environments where early vigour and longer straw is preferred; and where lodging is less of an issue. However, AGT data suggests that Titan AX performs consistently well across a range of growing conditions and therefore should be a suitable option for all growers that see value in tolerance to Aggressor® herbicide.

Titan AX has been accepted into the Grains Australia malt accreditation program, with stage 2 malt evaluation planned for 2024. Titan AX is deliverable into the Barley/Feed grade.

For full details download the Titan AX fact sheet

Crop safety when using Aggressor® herbicide - tech sheet

Controlling volunteer CoAXium® barley - tech sheet

Aggressor® herbicide - full permit label

Aggressor® herbicide - safety data sheet

Using Aggressor® herbicide - tech sheet

CoAXium® Barley Production System

Titan AX has been specifically developed to carry tolerance to Aggressor® herbicide. Aggressor® is a Group 1 Quizalofop-P-Ethyl herbicide, offering post-emergent knockdown of major grass weeds including brome grass, barley grass, annual ryegrass, wild oats, and volunteer wheat and barley (non-Aggressor® tolerant only).

Aggressor® herbicide has a wide application window and flexibility to be mixed with herbicides to control broadleaf weeds, with no carryover on soil or grain residue issues. Distribution of Aggressor® herbicide and the CoAXium® stewardship program is administered by Sipcam.

Visit www.coaxium.com.au for more information.

Seed Availability

Commercial quantities of Titan AX may be available through AGT Affiliates, or your local retailer.

Titan AX is able to be traded between growers upon the completion of a License Agreement as part of AGT’s Seed Sharing™ initiative.


Titan AX is protected by Plant Breeders Rights (PBR) and all production (except seed saved for planting) is liable to an End Point Royalty (EPR), which funds future plant breeding.

Titan AX growers will be subject to a Growers License Agreement that acknowledges that an EPR of $4.55/tonne + GST has to be paid on all production other than seed saved for planting.

CoAXium™ Barley trait purity testing service

If you require confirmation that your seed source is pure for the CoAXium™ trait (Aggressor™ AX herbicide tolerance) you can obtain a DNA-based PCR test on your seed sample.

To arrange your test please contact Intertek (the service provider).

Name: Rino Donato
Email: agritech.australia@intertek.com
Phone (office): +61 8 8301 1900
Mobile: +61 457 732 550

Please note there is a cost for this service, and you will be required to supply a clean 100g sample of your seed. Expected turnaround time is 1 month.
As a reminder, using Aggressor™ AX herbicide on your CoAXium™ barley every year is best practice to maintain purity of the CoAXium™ trait.