Weeds

Weeds pose a serious risk for primary producers as they can impact on market access and agricultural production.

In 2006/07, each Western Australian agricultural business spent an average of $29 376 ($341 million total) on weed control (Australian Bureau of Statistics).

Weed control is a shared responsibility between landholders, grower groups, biosecurity groups and the Department of Primary Industries and Regional Development.

To protect WA’s agriculture, the department:

  • works with landholders, grower groups, community groups and biosecurity groups
  • regulates weeds under the Biosecurity and Agriculture Management Act 2007
  • provides a weed identification service
  • provides a predictive simulation tool called weed seed wizard
  • provides information on weed control, crop weeds, regulated/declared plants and herbicides
  • contributes to social science through weedwatcher.

For advice on weeds search our website, the Western Australian Organism List or contact our Pest and Disease Information Service (PaDIS).

For diagnostic services, please contact our Diagnostic Laboratory Services.

Articles

  • In 2021 the Department is conducting over 300 research trials across the state from Kununurra in the north to Esperance in the south.

  • This series of video tutorials has been produced to provide advice about the best ways to monitor and sample crops to diagnose and overcome constraints to crop production.

  • Management of weeds, disease and nitrogen nutrition are ongoing challenges that limit yield potential.

  • Oats are more competitive with weeds than most other crops but weed control is still critical, particularly in hay crops as weeds can cause downgrading or rejection of export hay.