Australian Herbicide Resistance Initiative
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Linkage Project Awarded to UWA

Congratulations to AHRI’s Dr Stephen Powles, Dr Qin Yu and Dr Heping Han on securing ARC Linkage funding in conjunction with Nufarm. The project Elucidating trifluralin resistance in Australian major weed Lolium rigidum has received:

$358,107 – ARC; $125,075 cash and $245,844 in-kind from the partner organisation Nufarm Australia

This project seeks to identify the biochemical and molecular basis of trifluralin resistance in Lolium populations. Trifluralin is a pre-emergent herbicide used to control crop-infesting weeds and makes a major contribution to Australian grain production through enabling soil-conserving minimum/zero tillage cropping systems.

However, the evolution of resistance to trifluralin in the dominant weed Lolium rigidum now looms, threatening trifluralin sustainability. Fundamental understanding and insights of trifluralin resistance and evolution will assist resistance management, trifluralin sustainability and soil conservation. This will provide significant benefit for Australian grain production.


Blog: AHRI insight
Chickpeas can compete

Wed, 16 May 2018

There are few herbicide options for sowthistle control in chickpea crops, making the perfect recipe for a good ol’ sowthistle blowout. Despite all of this, the latest research by Michael Widderick, Adam McKiernan and Greg Harvey from QDAF with GRDC investment is finding that chickpeas can win the competition against sowthistle if they stack their deck. Growing a chickpea crop at narrow row spacing and high crop density in northern cropping regions can greatly reduce sowthistle seed production without reducing chickpea yield. Click through to find out more!

Featured Publication
Publications Modeling the Impact of Harvest Weed Seed Control on Herbicide-Resistance Evolution

Thu, 17 May 2018

In this modeling work, Gayle Somerville evaluated the value of HWSC in minimising the rate of herbicide resistance evolution.  The modeling clearly showed the benefit of HWSC in minimising resistance evolution.  There is a real benefit in having the diversity tactic of the non-chemical HWSC in minimising the rate of resistance evolution.  HWSC reduces weed numbers over time and helps achieve greater sustainability and longevity of important herbicide resources.

Grains Research and Development CorporationWeed smartDiversity Era logo