January 10, 2023
AHRI 2022 wrap-up: a year in review
Written by: Jessica Scholle From all of us at AHRI, Happy New Year! As we start a fresh new year, we wanted to take this…
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News
mechanisms
January 17, 2022
AHRI 2021 Wrap-Up
Written by: Jessica Scholle Despite the challenges COVID-19 presented in 2021, our researchers continued their research and published throughout the year. From the identification of…
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News
August 11, 2021
Mixtures rock! Next level resistance testing tells a big story
Written by: Peter Newman AHRI insight has a bit of a twist this edition. Peter Newman composed and performed a rap. You can check out…
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AHRI Insight
April 13, 2021
A new glyphosate resistance mechanism with similarities to cancer drug resistance
AHRI researchers have identified a new glyphosate resistance mechanism which has similarities to cancer drug resistance in humans.
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AHRI Insight
March 31, 2021
2,4-D synergises metribuzin
Synergy between herbicides is rare, but extremely sort after and this synergy is often claimed but it takes a specific research technique to confirm the synergy. Australian farmers and agronomists have previously observed synergy between phenoxy herbicides (2,4-D) and PSII herbicides (Group C / Group 3 herbicides such as metribuzin) and now we know why, thanks to this new AHRI research.
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AHRI Insight
February 15, 2021
World first: glyphosate resistant capeweed
We’re blowing up our most valuable herbicides on the least productive part of the farm.
Fencelines, roadsides, drainage areas, etc.
AHRI researchers, Dr Yaseen Khalil and Dr Mike Ashworth and others have confirmed the world’s most recent addition to the growing list of glyphosate resistant weeds: capeweed.
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AHRI Insight
February 1, 2021
We’ve cracked the P450 code
About 35 years ago a ryegrass population that had been sprayed several times with Hoegrass® (Diclofop) became resistant to that herbicide and cross resistant to Glean (chlorsulfuron) before Glean® or any other ALS herbicide had ever been used in Australia.
P450 enzymes were suspected to be the cause of this cross resistance but it has taken until now to get the definitive evidence.
A very patient group of researchers led by Heping Han from AHRI, including researchers from Bayer and Zheijiang University in China have identified the P450 gene responsible for cross resistance to herbicides of at least five modes of action.
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AHRI Insight
December 18, 2020
AHRI 2020 Wrap Up
Despite the challenges 2020 presented, there continued to be excellent research which was published throughout the year. In this post we have collated our top five most read AHRI insights and our top five most listened to podcasts for 2020.
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December 1, 2020
The herbicide mixture is greater than the sum of herbicides in the mix
AHRI researcher, Dr Roberto Busi is no philosopher, but he has recently published some significant research that shows that Aristotle knew a thing or two about herbicide resistance despite being born over 2000 years before the first herbicide. Amazing! The message from this research – never assume that a herbicide mixture will fail even if there is resistance to both components of the mix.
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AHRI Insight
November 3, 2020
2,4-D antagonises glyphosate, especially in glyphosate resistant weeds
Some recent research by a former AHRI researcher Jingbo Li and others shows that glyphosate resistance changes this. They studied two populations of barnyard grass with relatively low-level glyphosate resistance and found that when 2,4-D Amine or Ester was added to the tank with glyphosate, barnyard grass control was greatly reduced. They went on to discover that this is due to an effect on uptake and translocation.
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AHRI Insight
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