First cases of glyphosate and paraquat resistant ryegrass in WA
March 31, 2022
For the first time in Western Australia, annual ryegrass from a cropped paddock was found to be resistant to glyphosate and paraquat.
Farmanco Agronomist Consultant Brent Pritchard gives some context on how this resistance evolved in the field.
AHRI Senior Research Fellow Dr Roberto Busi presents the preliminary results he obtained in recent glasshouse trials, which aimed to characterise the resistance.
Roberto will conduct two field trials in 2022. He explains what treatments he is planning to test, including different double knocks options.
The webinar was hosted by WeedSmart western extension agronomist, Peter Newman.
Topics covered include:
- History of the paddocks where the two cases of dual resistance were found
- Results of pot trials (resistance tests done in the glasshouse)
- Plans for field trials
Related Articles
View all
Podcast
S11E6: Regional Update – Joe Koch, Flinders Ranges, SA
Joe and his family run a mixed "crops and chops" operation in separate high and low rainfall zones. With a rare wet start under their belts, they've been faced with higher numbers of ryegrass, barley grass, marshmallow weed, capeweed and milk thistle! Read More...
Webinar
Fighting Fleabane!
Replay this webinar for a cross-country look at what is and isn’t working for fleabane control in each growing region. Read More...
Podcast
S11E4: Regional Update – Will Woolcock, Emerald, QLD
Will gives advice on fallow and in-crop chemistry and cautions growers against an over-reliance on glyphosate and glufosinate. He'd recommend looking into strategic tillage and crop rotations! Read More...
Webinar
Rise of the Machines: How to Invest in the Right Spray Technology for You!
Join our next webinar to find out what you should be considering before investing in new spray tech! Read More...
Podcast
S11E3: Regional Update – Paul Ackland, Arthurton, SA
In this episode of Regional Update we're joined by Paul "Chippa" Ackland, senior agronomist at Central Ag Solutions in Arthurton SA. Following a very hot summer, some much needed March rain has brought out ryegrass and cape weed germination on the Yorke Peninsula. Read More...
Podcast
S11E2: Regional Update – Angus Roberts, Dandaragan, WA
Since attending WeedSmart Week in 2022, Angus and his family have adopted all of the Big 6 weed control strategies. Read More...