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 Agriculture and Food, Western Australia (DAFWA).

To protect Western Australia’s agriculture DAFWA:

  • 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.

If you need advice on weeds please search our website, Western Australian Organism List or contact our Pest and Disease Information Service (PaDIS).

For diagnostic services, please contact our AGWEST Plant Laboratories.

Articles

  • 10 August 2015

    The most accurate way to estimate the weed population of a paddock is to count the number of plants in an area of known size at a number of locations.

  • 3 September 2015

    In-crop weed competition causes losses costing around $1 billion per annum for Western Australia (WA).

  • 18 February 2015

    One-off soil inversion results in the complete burial of the water repellent topsoil in a layer typically at a depth of 15 to 35cm, and brings to the surface a layer of wettable subsoil. Inversion

  • 18 January 2016

    Herbicides play a vital role in integrated weed management programs.

  • 4 February 2016

    Herbicides can be applied by a variety of means including boom sprayers, aerial spraying, misters, blanket wipers, rope wick applicators, weed seekers and back-pack sprayers.

  • 22 February 2016

    Annual ryegrass (Lolium rigidum) is one of the most serious and costly weeds of annual winter cropping systems in southern Australia.

  • 10 August 2015

    In Western Australia (WA) competition from seven to ninety capeweed plants/square metre (m2) in a wheat crop can reduce crop yield by 28 to 44% and net return by 25 to 76%.

  • 24 November 2015

    Barley grass is a common name for Hordeum glaucum and H. leporinum.

  • 19 August 2015

    Herbicide resistance is the inherited ability of an individual plant to survive a herbicide application that would kill a normal population of the same species.

  • 3 February 2016

    Windmill grass (Chloris truncata) is a native species and is the tenth most common summer weed species in the Western Australian wheatbelt.

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