Diseases

Diseases have a detrimental effect on plants and animals and impact on market access and agricultural production. Diseases include micro-organisms, disease agents (bacteria, fungi and viruses), infectious agents, parasites and genetic disorders.

Western Australia is free from some of the world's major agricultural and livestock diseases. Biosecurity measures on your property are vital in preventing the spread of diseases.

The Department of Primary Industries and Regional Development provides:

  • biosecurity/quarantine measures at the WA border to prevent the entry of plant and animal diseases
  • post border biosecurity measures for harmful animal and plant diseases
  • advice on widespread diseases present in the state.

For advice on animal and plant 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

  • Cotyledon infection

    Crops should be monitored for leaf diseases in order to undertake appropriate control measures when first detected and to alter management strategies in subsequent crops that will minimise the impa

  • Waxflower is susceptible to a range of foliar diseases. The main problems which occur in commercial plantations and their control are outlined here.

  • Inspection of the intestines and associated lymph nodes of adult sheep is one of the most sensitive and cost-effective ways of detecting early ovine Johne's disease (OJD) infection on a property.

  • Ovine Johne's disease (OJD) is a slow-moving, progressive disease caused by the bacterium Mycobacterium paratuberculosis.

  • Panama disease Tropical Race 4 (TR4) is considered one of the most destructive diseases of banana plants worldwide.

  • Ovine Johne's disease (OJD) is caused by the bacterium Mycobacterium avium subspecies paratuberculosis (commonly referred to as Mycobacterium paratuberculosis).

  • Ovine Johne's disease (OJD) is a serious wasting disease that affects mainly sheep, and to a lesser extent goats.

  • Lesions near leaf tips cause leaf yellowing and withering.

    Yellow spot is a stubble-borne fungal leaf disease of wheat caused by Pyrenophora tritici-repentis.

  • Yellow-orange pustules are arranged in stripes along the leaf veins.

    Stripe rust is a fungal foliar disease specific to wheat that can cause up to 60% yield loss and reduce grain quality, particularly when susceptible varieties are infected early.

     

  • Irregular, elongated often interveinal leaf blotches with a narrow yellow margin

    A fungal foliar disease caused by Mycosphaerella graminicola (synonym Septoria tritici).

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