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Personal profile

Personal profile

After graduating from the University of Adelaide with a BAppSc (Ag) (Hons), John completed a Masters Degree at CSU investigating herbicide resistance in wild oats in southern NSW. Since then he has participated in several herbicide resistance projects including herbicide resistance to knockdown herbicides and herbicide resistance in weeds of rice.

John manages the CSU Herbicide Resistance Testing Service and is involved in several of the Graham Centre's Integrated Weed Management research projects.

Research Interests

  • Integrated weed management (MLA)
  • Collaboration with University of Western Australia, Australian Herbicide Resistance Initiative (GRDC)
  • Rice weeds Resistance Testing (RIRDC)
  • Weed management in southern region mixed farming systems – strategies to combat herbicide resistance (GRDC)


John gives occasional lectures on herbicide resistance.

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Research Output

  • Open Access
  • 9 Downloads (Pure)

    A quarter of a century of monitoring herbicide resistance in Lolium rigidum in Australia

    Broster, J., Pratley, J., Ip, R., Ang, K. & Seng, J., 25 Mar 2019, In : Crop and Pasture Science. 70, 3, p. 283-293 10 p.

    Research output: Contribution to journalArticle

  • 3 Citations (Scopus)

    Chaff lining: A recently developed low cost harvest weed seed control method for Australian cropping systems

    Broster, J., Rayner, A., Ruttledge, A. & Walsh, M. J., 2019.

    Research output: Other contribution to conferenceAbstract

  • 1 Citation (Scopus)


    Outstanding paper 2018 - Weed Technology journal

    Michael J Walsh (Recipient), Broster, John (Recipient) & Stephen B. Powles (Recipient), 2019



    • 1 Internal HDR Supervision

    PhD "Seed contamination in Australian sheep by barley grass: an analysis of prevalence, economic impact and management"

    Leslie Weston (Examiner), Kelly, J. (Examiner), Jane Quinn (Examiner), Panos Loukopoulos (Examiner), John Broster (Examiner) & Karl Behrendt (Examiner)

    03 Mar 201530 Apr 2020

    Activity: Supervision/Examination/MentoringInternal HDR Supervision

    Press / Media

    Kimba Grains Research Update to inform Upper EP growers

    John Broster


    3 items of Media coverage

    Press/Media: Press / Media

    Quick, test your winter weed escapes

    John Broster


    1 item of Media coverage

    Press/Media: Press / Media

    Survey reveals extent of herbicide resistance in summer weeds

    John Broster


    1 item of Media coverage

    Press/Media: Press / Media

    Extent of herbicide resistance in summer weeds revealed

    John Broster


    1 item of Media coverage

    Press/Media: Press / Media

    Herbicide resistance on the rise in SA’s South-East, Mallee

    John Broster


    1 item of Media coverage

    Press/Media: Press / Media