New research provides insights into annual ryegrass control options for Canola farmers

New research provides insights into annual ryegrass control options for Canola farmers

February 26, 2021

Annual ryegrass is a major weed of crops across southern Australia and has evolved resistance to many of the herbicides making management in canola challenging.

New research by Dr. Christopher Preston from the University of Adelaide has examined the efficacy of different herbicide strategies in TruFlex/Clearfield canola compared to TruFlex, Clearfield, Clearfield/TT and TT to determine the best management practices for annual ryegrass control.

Presented at the GRDC Perth updates in February 2021, the research and field trials found:

  • Stacked tolerance in canola offers multiple options and timing to control annual ryegrass.
  • Good early weed control is essential to reducing weed numbers in crop.
  • Resistance to the imidazolinone herbicides is present in most annual ryegrass populations making strategies reliant on these herbicides ineffective.

Read the full research paper (PDF) and GRDC presentation (PowerPoint) for complete trial data, full findings, results and conclusions.

Contact the author: Dr Christopher Preston, University of Adelaide, Ph: 0488 404 120 or email: chritstopher.preston@adelaide.edu.au

Acknowledgments: This research was funded by Bayer CropScience and Pacific Seeds.

View presentation made as part of the GRDC 2021 Perth Updates.

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