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Australian Herbicide Resistance Initiative

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What is AHRI?


Welcome to The Australian Herbicide Resistance Initiative (AHRI) homepage! Before you dig into all our publications and podcasts, you might be wondering who we are and what we do. AHRI was a GRDC initiative which launched in 1998 under the guidance of Professor Stephen Powles. In 2018, we celebrated 20 years of GRDC funding, operating as a research group out of the University of Western Australia. You can get a great overview of what we’re all about by watching the video on the right. You can also learn more in this Outlooks on Pest Management article here.

Blog: AHRI insight
Ryegrass resists Sakura® the same way wheat does

Wed, 8 Sep 2021

The Sakura rugby team were formidable. They would turn up to play every game at the Ryegrass Cricket Ground (RCG – also known as the G) and win every game for ten years in a row. They were better in the wet than the dry, but regardless of conditions they were never beaten. Having no opposition every game perhaps had something to do with it! Then one day they turned up for their usual game, feeling relaxed, until they realised they had an opposition, the GSTs. The GSTs were huge (think a team of Jonah Lomu’s) and there were about…

Featured Publication
Publications Pyroxasulfone-Resistant Annual Ryegrass (Lolium rigidum) Has Enhanced Capacity for Glutathione Transferase-Mediated Pyroxasulfone Conjugation

Tue, 7 Sep 2021

The herbicide pyroxasulfone was widely introduced in 2012, and cases of evolved resistance in weeds such as annual ryegrass (Lolium rigidum Gaud.) and tall waterhemp [Amaranthus tuberculatus (Moq.) Sauer] have started to emerge.


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