Pests, weeds & diseases

Pests, weeds and diseases pose a serious risk for primary producers as they can impact on market access and agricultural production.

To reduce the impact of pests, weeds and diseases, the Department of Primary Industries and Regional Development:

  • works with landholders, grower groups, community groups and biosecurity groups.
  • provides diagnostic services and information on prevention, management and treatment.
  • provides biosecurity and quarantine measures to prevent introduction, and to eradicate or manage current pests.

For advice on pests, weeds and diseases 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

  • Keeping olive trees well-fed and adequately watered is the best initial defence against pests and diseases, since vigorous trees are better able to withstand attack and less likely to suffer long-t

  • Various insects and mites can damage native plants in home gardens. A description of some of the more important insect pests is given here, together with general methods for control.

  • Downy mildew is caused by a fungus which has been affecting impatiens in Western Australia since 2007 after being found in Victoria the previous year.

  • If azalea foliage or flowers are being spoiled by lace bug or petal blight, preventative action – taken at the right time of year – can ease the problem.

  • Cypress canker or conifer die-back is a serious disease of exotic conifers that is common in Perth.

  • Emerging leaves are distorted and discoloured; leaf blades become cupped and crinkly

    Glyphosate is a systemic knockdown herbicide that is used extensively for brown fallow, summer weed or pre-seeding weed control, or selective weed control in glyphosate resistant crops.

  • Uniformly affected plants with pale leaf blotches

    Group F herbicides are registered for selective control of wild radish, wild mustard and wild turnip in cereals, legume crops and legume pastures. Canola is less affected than brassica weeds

  • Work to close the 170km Yilgarn gap has begun, marking a significant milestone in upgrading the State’s historic barrier fence.

  • Various insects, nematodes and mite pests can damage tomato crops in the home garden and nematodes, russet mites and budworms can be especially destructive. The plants can be damaged at all stages

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