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

  • Plants may emerge then curve back into the soil

    Allellopathy is a disorder of germinating plants caused by plant phytotoxins.

  • Roots of affected plants are blackened and brittle and break easily, and are black to the core not just on outer surface.

    Plant root diseases are one of the main factors responsible for poor crop yields.

  • Powdery mildew is a disease which is becoming more prevalent in Western Australian strawberry crops as increasing areas are being grown under high (Haygrove) tunnels.

  • Strawberries are affected by a number of pathogens causing crown and/or root rots.  These diseases are becoming more prevalent for several reasons including the withdrawal of methyl bromide as a so

  • All gardens have a range of permanent soil-borne disease organisms which are usually contained in a balanced environment where organisms, soil conditions, and hosts interact in a complex system.

  • This web article describes the most common diseases of citrus trees and their control using natural or low-toxic methods.

  • Phytophthora root rot is the most common soil-borne disease causing plant death in native cutflower production.

  • The aim of the Western Australian Plant Pathology Reference Culture Collection (WAC) is to preserve plant pathogen isolates while providing pure cultures and genetic materials required for diagnost

  • Septoria spot (Septoria citri) is a serious pest of citrus that can affect external fruit quality. This pest is not known to occur in Western Australia.

  •  Potato spindle tuber viroid can reduce crop yields in potatoes and tomatoes. Use certified disease-free planting material and destroy infected plant material.

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