Australian Herbicide Resistance Initiative

Meet the team

Meet the people behind the science

Learn more here

Crop Protection Forum

The details for the 2020 forum will be released later this year.

Stay tuned!

Blog: AHRI Insight

Bringing you the need-to-know in herbicide resistance with our fortnightly newsletter, AHRI insight.

All AHRI Insights


Encouraging more crop, less weeds sustainably through a wide range of research activities.

Research page


Sometimes, words just aren’t enough. Check out our range of videos covering HWSC methods, resistance management, keynote presentations and more.

All videos


The AHRI Snapshots podcast focuses on researchers and their stories.

Find out more by subscribing and listening to the podcast below.

Listen to AHRI Snapshots here

Sign up for our newsletter & get access to short & sharp insights into the world of more crop, less weeds


We respect your email privacy

ahri insight.png

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
Hoe, hoe, hoe and away weeds go!

Mon, 18 May 2020

How many hours did you spend out in the paddock with a chipping hoe when you were a kid? Do you still carry one in every ute? Chances are you know how effective they are; but wouldn’t mind if you never had to use one again! Australia has an unfortunate habit of claiming world-firsts in new species for the herbicide resistance lists. Fortunately, we have also been leaders in the development of new tools to help combat the problem. Enter: the revolutionary new chipping hoe! The latest of these developments is the world’s first site-specific mechanical weeder.

Featured Publication
Publications Interactions between crop sequences, weed populations and herbicide use in Western Australian broadacre farms: findings of a six-year survey

Wed, 13 May 2020

Six years of survey data taken from 184 paddocks spanning 14 million ha of land used for crop and pasture production in south-west western Australia were used to assess weed populations, herbicide resistance, integrated weed management (IWM) actions and herbicide use patterns in a dryland agricultural system. Key findings were that weed density within crops was low, with 72% of cropping paddocks containing fewer than 10 grass weeds/m2 at anthesis.

Grains Research and Development CorporationWeed smartDiversity Era logo