Ahri Snapshots

Today we’re catching up with Facundo Cortese who has been working out of AHRI alongside Roberto Busi. He recently spoke at the Perth GRDC Crop Updates on how herbicide mixtures and crop competition provide excellent control of annual ryegrass and mitigate herbicide resistance.You can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.

In this week's podcast, we catch up with visiting scholar, Aniruddha Maity, also known as Maity.He's working on the seed biology and ecology of brome, wild barley, wild oat and ryegrass and connecting them with their herbicide resistance. Maity is originally from India and is a PhD candidate at Texas A&M University (@TAMU on Twitter). He's come to AHRI with the Endeavour Leadership Program.You can follow Maity on Twitter here: https://twitter.com/Its_MaityYou can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.

The first resistance to HPPD, also known as Group H, herbicides in wild radish has now been discovered by AHRI researchers led by PhD candidate Huan Lu. Wild radish is just the third weed in the world to evolve resistance to this group of herbicides. In this podcast, we caught up with Huan to learn more about the results published in his paper “Evolution of resistance to HPPD-inhibiting herbicides in a wild radish population via enhanced herbicide metabolism”. You can read the AHRI insight and find the link to the paper here: https://ahri.uwa.edu.au/group-h-hppd-resistant-wild-radish/You can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.

For the first AHRI Snapshots podcast of 2020, we caught up with Associate Professor Ken Flower about a recent paper he co-authored with AHRI Director Hugh Beckie and AHRI’s Agronomy Lead, Mike Ashworth.With glyphosate currently under intense scrutiny worldwide from an environmental and health perspective, the authors of the paper “Farming without glyphosate” contemplated possible scenarios of farming without our most important and popular herbicide.Take a listen to the podcast below to learn more. You can read the paper here:https://ahri.uwa.edu.au/publications/farming-without-glyphosate/You can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.

In our final AHRI Snapshots podcast for 2019, we caught up with AHRI’s Dr Yaseen Khalil about his papers the “Effect of crop residues on interception and activity of prosulfocarb, pyroxasulfone, and trifluralin” and “Pyroxasulfone efficacy for annual ryegrass control is affected by wheat residue height, amount and orientation”. Cindy Benjamin has also written an AHRI insight on these two papers which you can read here: https://ahri.uwa.edu.au/whats-the-sticking-point-better-pre-em-efficacy-in-stubble-retention-systems/You can follow Yaseen on Twitter here: https://twitter.com/ykhalil2013You can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.

Today on AHRI Snapshots, we catch up with Colorado State University Associate Professor, Dr Todd Gaines about metabolism-based glyphosate resistance.Peter Newman recently wrote AHRI insight on this topic. Back in 2011, then Ord River agronomist, Andrew Cripps, was approached by a farmer asking why his Barnyard grass had survived glyphosate.Dr Todd Gaines and Professor Steve Powles visited the northern irrigation region, took samples, and confirmed glyphosate resistance.Recently, further research at AHRI by Chinese researcher Dr Pan Lang, under the direction of AHRI’s Qin Yu, confirmed the world’s first case of metabolism-based glyphosate resistance.Todd shares his experience from back in 2011 and provides some insights into what this discovery means.You can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.

Cesar is partnering with the Australian Herbicide Resistance Initiative (AHRI) and the Centre for Crop and Disease Management (CCDM) to deliver the 2019 Crop Protection Forum. Attendees will learn about the latest research into insecticide, herbicide and fungicide resistance affecting the grains industry. Take a listen to this podcast with Cesar's Jessica Lye and AHRI's Hugh Beckie to find out more about the forum. To get your tickets, visit the website here: https://www.cpf2019.com/You can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.

Cesar is partnering with the Australian Herbicide Resistance Initiative (AHRI) and the Centre for Crop and Disease Management (CCDM) to deliver the 2019 Crop Protection Forum. Attendees will learn about the latest research into insecticide, herbicide and fungicide resistance affecting the grains industry. Take a listen to this podcast with Cesar's Jessica Lye and AHRI's Hugh Beckie to find out more about the forum. To get your tickets, visit the website here: https://www.cpf2019.com/You can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.

Today we catch up with AHRI’s Dr Qin Yu about the paper “Do plants pay a fitness cost to be resistant to glyphosate?” This paper was published earlier this year and is written by Martin Vila-Aiub, Qin Yu and Steve Powles. This paper reviewed the literature to understand the effects of glyphosate resistance on plant fitness as the molecular, biochemical and physiological levels. Dr Qin Yu explains further.You can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.

In this podcast, Cindy Benjamin catches up with Charles Sturt University (CSU) Professor Leslie Weston to get the next instalment on their work. You can read the insight and listen to the podcast on Leslie and her team's earlier work here: https://ahri.uwa.edu.au/crops-are-doin-it-for-themselves/The last podcast focused on cereals, while this one looks at the mechanisms at play in canola.Leslie led a large project at CSU alongside Associate Professor Dr Chris Preston at The University of Adelaide, to investigate several aspects of crop competition.PhD candidate James Mwendwa and the project team conducted field trials at Wagga Wagga comparing the weed-suppressive effect of six hybrid and one open-pollinated canola cultivars, both in-crop and post-harvest, in 2014.The experiment was repeated in 2015, a drier year with much lower weed pressure, using the same cultivars plus two new cultivars. In 2015 and 2016, another site at Condobolin was added to test the same cultivars in a lower rainfall environment.L

For this AHRI Snapshots podcast, we catch up with AHRI and WeedSmart Western Extensions Agronomist, Peter Newman, who wrote one of our latest AHRI insights on the best harvest weed seed control tool for you. He also developed a model which allows you to input your own data to figure out what options you might consider. You can read the insight here: https://ahri.uwa.edu.au/whats-the-cost-of-hwsc-for-you/And you can download the model here: https://ahri.uwa.edu.au/wp-content/uploads/2019/09/Estimated-Cost-of-HWSC-calculator-Sept19-1.xlsxYou can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.

In this podcast, with chatting with AHRI PhD candidate Huan Lu about his paper “Metribuzin resistance in a wild radish population via both psbA mutation and enhanced metabolism”. The authors of this paper are Huan Lu, Qin Yu, Heping Han, Mechelle J. Owen, and Stephen B. Powles.This paper identifies multiple mechanisms: as well as psbA gene mutation there is a non-target site resistance mechanism of enhanced metabolism. In his current studies, Huan Lu is documenting that this non-target site enhanced metabolism resistance endows resistance to other very different herbicides. This information will become available in Huan’s next publication.You can read the AHRI insight on this work here: https://ahri.uwa.edu.au/is-there-an-invisible-gorilla-in-your-paddock/You can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.

Research agronomist John Broster joins us on AHRI Snapshots this week to give an overview of the annual resistance testing report he releases each year through Charles Sturt University. You can find out more about the service here: https://www.csu.edu.au/plantinteractionsgroup/herbicide-resistanceYou can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.

Queensland Government Department of Agriculture, Fisheries and Forestry Principal Research Scientist, Michael Widderick recently visited AHRI in Perth. Michael gave a great overview of his projects and we also discussed opportunities to collaborate with AHRI. Michael's team are working on crop competition (among other projects), focusing on sorghum, pulse crops, and manipulation of crop competitiveness to suppress typically summer emerging weeds in winter crops. There are some similarities with the crop competition work our agronomy team are doing. Michael explains some of the barriers to crop competition adoption in the Northern region. We also discuss how the drought in the Northern region impacts research outcomes.You can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.

Our latest AHRI insight which will be published in the next few days, ‘Crops are doin’ it for themselves’, written by Cindy Benjamin, looks at work around crop competition out of Charles Sturt University. The main project is led by Professor Leslie Weston at CSU and Associate Professor Dr Chris Preston at The University of Adelaide, to investigate several aspects of crop competition. The AHRI Insight delves into just one set of experiments within the broader project, that investigated the ‘impact of crop cultivar on in-crop and post-harvest weed suppression’. Today we’re chatting with Leslie, who will give an overview of this important work.You can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.

Our extension officer Kirrily Condon recently wrote an AHRI insight entitled “Thermal weed control – just hot air, or site-specific reality?” (read it here: https://ahri.uwa.edu.au/thermal-weed-control-just-hot-air-or-site-specific-reality/)which looked at work by a team from the University of Sydney. Guy Coleman and his colleagues reviewed 170 papers, which demonstrated that mechanical weed control options, like tillage, can use significantly less energy than thermal options, like heat, to kill weeds. Herbicide energy use sits somewhere in the middle. We chat with Guy to find out a bit more.You can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.

Today on AHRI Snapshots, we're chatting with AHRI Director Hugh Beckie about the recent AHRI review paper "Herbicide Resistance Management: Recent Developments and Trends". This paper covers recent developments and trends in herbicide-resistant weed management in agronomic field crops. This paper was written by AHRI’s Director Hugh Beckie, Dr Mike Ashworth and Dr Ken Flower and has helped shape the AHRI agronomy program going forward. You can read the paper here: https://ahri.uwa.edu.au/publications/herbicide-resistance-management-recent-developments-and-trends/You can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.

On this week's podcast, we’re chatting with Darling Downs-based consultant from PulseAg Consulting, Kerry McKenzie. He has done work on pulse crop agronomy and the implications for weed competition and he’s going to give us an overview of the results out of the Darling Downs and Emerald trials. Kerry's previous agronomy work has helped inform researchers from the University of Queensland Gulshan Mahajan and ‘Sunny’ Chauhan with ways to give chickpea crops a competitive advantage against annual ryegrass. *NB The audio of some of Kerry's interview is a little bit hard to hear in a few sections as he didn't have access to a landline phone.You can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.

In this edition of AHRI Snapshots, we're chatting with AHRI's Dr Roberto Busi about his GRDC-funded Focus Farms Project which recently wrapped up in March this year. The project was based in the Kwinana Port Zone in Western Australia. Its primary aim was to demonstrate the value of growers testing for herbicide resistance. Roberto gives a great overview of, how the project came about; what he discovered; and how growers can utilise this information. Find out more here: https://ahri.uwa.edu.au/podcast/importance-of-resistance-testing-galvanised-in-grdc-funded-focus-farms-project/You can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.

AHRI PhD student, Jinyi Chen, studied the inheritance of trifluralin resistance with target site resistance in ryegrass. She found that resistance is single gene recessively inherited. This means that both parents must have a copy of the resistance gene for the progeny to be resistant.Recessive resistance inheritance is rare in the world of herbicide resistant weeds. Nearly all other cases of target site herbicide resistance involve semi-dominance.This could be part of the reason why trifluralin resistance in ryegrass was slower to evolve than other types of herbicide resistance. However, there is always more than one resistance mechanism.Jinyi joined us on the podcast one last time before she left for post-grad work in Canada. Take a listen!You can follow AHRI on Twitter here. To learn more about AHRI's research and team, check out the website here.