Australian Herbicide Resistance Initiative (AHRI)



AHRI Snapshots is a podcast which provides info on what we do at AHRI 

Our researchers work out of the University of Western Australia, next to the beautiful Swan River in WA’s capital, Perth.

If you’d like to listen and subscribe to our podcast via iTunes, click here. If you don’t have iTunes, but would like to listen to all the podcasts in a playlist, click here

Latest podcast

Listen to Podcasts

Managing wild oats in Western Canada and Australia

Usually, we only have a podcast come out every fortnight, but with the exciting news of Hugh Beckie being announced as the new AHRI Director (commencing in July 2018), we thought it might be fitting to release this interview we did about wild oats when he was here in Perth.


How do weed population models affect predictions of herbicide resistance evolution?

Former AHRI researcher, Dr Gayle Somerville, has developed a new spatially-explicit model called SOMER. She examined how changing the following factors affected the predicted evolution of resistance: the degree of spatial resolution used in the model; whether resistance was semi-dominant or fully-dominant; distances of pollen and natural seed dispersal; and inadvertent collection and grain harvester weed seed dispersal (GHWSD). Learn more in this podcast!


Ecology of brome grass and ryegrass and how to manage them

Dr Catherine Borger from the Department of Primary Industries and Regional Development talks about one of the GRDC projects she’s working on. The project, run by Dr Gurjeet Gill from the University of Adelaide is looking closely at a range of weed species to find out more about the basic ecological facts about them. Take a listen to the podcast to learn more about brome grass and annual ryegrass.


The effect of soil pH on weeds

Recently Jessica Strauss caught up with Department of Primary Industries and Regional Development Principal Research Officer Dr Abul Hashem to talk about research he and Dr Catherine Borger have done on the interaction between soil pH, weeds and crops. Soil acidity limits productivity on approximately 50% of Australia’s agricultural land and several important weed species have a competitive advantage over broadacre crops on soils where the surface soil pH level is less than 5.5 or the subsurface pH is less than 4.8. Learn more by listening to the podcast!


CSIRO’s Dr Cathryn O’Sullivan explains how weeds can manipulate the nitrogen cycle

Wild radish in flower

Research by Cathryn O’Sullivan from CSIRO is showing that some weeds release chemicals from their roots that slow down the bacteria that are essential to the nitrogen cycle, retaining nitrogen in the ammonium form that weeds can potentially take up faster than crop plants. Take a listen to the podcast with Cathryn to learn more.


Weed biology of sowthistle with Michael Widderick

Sowthistle is the kind of weed which can be a pain all-year-round. It’s particularly problematic for farmers in the North-Eastern part of the country. Jessica Strauss talks to Principal Research Scientist from the Queensland Department of Agriculture and Fisheries, Michael Widderick, about the strengths and weaknesses of this weed and how to manage it effectively, based on Michael and other’s research. Take a listen!