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

  • Cavity spot disease reduces the quality of carrots so that they become unacceptable for local and export markets. Information about this disease and its control are provided.

  • Carrots are susceptible to a number of postharvest diseases and disorders, many of which can be controlled by good management in the field and in storage.

  • Cavity spot disease of carrots in Australia is mainly caused by the soil-borne fungus Pythium sulcatum.

  • Carrot leaf blight is a disease commonly found in carrot crops in Western Australia. It is usually caused by the fungus Alternaria dauci and occasionally by A. radicina.

  • Carrot virus Y has been found in carrot crops throughout Australia.