The extent of herbicide resistance in ryegrass and wild oats in NSW and Qld

John Broster, Allison Chambers, Adam Jalaludin, Michael J. Widderick, Michael J Walsh

Research output: Other contribution to conferenceAbstractpeer-review


Herbicide resistant weeds are a major impediment to grain growers across the Australian cropping regions. Since resistance was first reported in ryegrass and wild oats in Australia in the 1980s the extent of resistance in these weeds has increased.Knowledge of the extent of resistance in a region is important in designing suitable extension messages to manage resistance. Random seed collection surveys for annual ryegrass and wild oats were conducted across the northern cropping region (NSW and QLD) with the aim of establishing the frequency of herbicide resistance in these species to commonly used herbicides. Approximately 1000 paddocks were surveyed with annual ryegrass and wild oats occurring in 68 and 56% of paddocks, respectively.
Original languageEnglish
Publication statusPublished - 2018
Event21st Australasian Weeds Conference (2018) - Novotel Sydney Manly Pacific, Sydney, Australia
Duration: 09 Sep 201813 Sep 2018 (conference proceedings) (conference program)


Conference21st Australasian Weeds Conference (2018)
Abbreviated titleWeed biosecurity - Protecting our future
OtherThe Weed Society of New South Wales Inc., on behalf of the Council of Australasian Weed Societies Inc., will be hosting the 21st Australasian Weeds Conference in the popular Sydney beach side suburb of Manly from 9 - 12 September 2018.  An assortment of field trips will be hosted on Thursday 13 September 2018.
This biennial conference carries on a long tradition of bringing the weed management community together to discuss new developments and share information about cutting-edge and best weed management practices.
The conference attracts over 250 delegates from across Australasia and globally.  Delegates will come together to network with peers, engage with industry sponsors, listen and participate in presentations and field trips on a variety of topics including; 
- New technologies in weed management.
- Biological, mechanical, and chemical weed control and research.
- Herbicide resistance.
- Weeds of crops and pastures.
- Environmental weeds and Weeds of National Significance.
Internet address


Dive into the research topics of 'The extent of herbicide resistance in ryegrass and wild oats in NSW and Qld'. Together they form a unique fingerprint.

Cite this