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

  • Downy mildew of grapevines can cause serious crop loss if weather conditions are favourable.

  • Bunch rots of grapes are widespread in Western Australia and reduce yield and quality. Weather conditions and control strategies influence the severity of losses which can vary between vineyards.

  • Sclerotinia shoot rot is caused by the fungus Sclerotinia sclerotiorum.

  • 'Crop-topping' is the late application of herbicides to prevent weed seed-set.

  • Spray-topping is a very effective method for managing annual grass seed set in pastures.

  • Spray-topping or pasture topping is the application of a sub-lethal rate of herbicide when grasses are coming into head and flowering.

  • In Western Australia's Mediterranean-type climate, the survival of pests and diseases over summer is often critical in determining pest outbreaks and disease epidemics in broadacre crops.

  • Roly poly, also known as prickly saltwort or tumbleweed (Salsola australis), is a native species found throughout Australia.

  • Downy mildew, caused by Plasmopara viticola, is a major disease of grapevines that originates from North America.

  • Eutypa dieback is caused by the fungus Eutypa lata which is a prohibited organism in Western Australia. It is a major trunk disease of grapevines that reduces yields and kills the vine.

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