DDLS - Seed testing and certification

DDLS Seed Testing and Certification (formally AGWEST Plant Laboratories) is a service area under the DAFWA Diagnostic Laboratory Services (DDLS) - an amalgamation of DAFWA plant and animal laboratory and inspection services.

DDLS provides effective and efficient laboratory capacity, inspection, policy input, research and testing for early diagnosis of notifiable diseases and verification for market access importation protocols for the state's agricultural industries.


  • 28 September 2016

    Almost all of WA citrus fruit is sold in the local market. Fruit has been sent to export markets since 2015 and is increasing.

  • 6 January 2015

    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

  • 6 January 2015

    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.

  • 22 December 2014

    The most common mite pest of strawberry crops is two-spotted mite (Tetranychus urticae), also known as spider mite or red-spider mite.

  • 15 December 2014

    Thrips are small slender insects (1.2mm long by 0.1mm), just visible to the naked eye.

  • 21 March 2016

    Potato virus Y (PVY) is an aphid-borne virus that causes yield losses and tuber quality defects in commercial potato crops.

  • 30 March 2016

    Potato leafroll virus (PLRV) causes a disease of potatoes worldwide and is endemic in Western Australia.

  • 25 November 2016

    Western Australia has in place conditions for the importation of seeds to avoid the introduction of pest and diseases into the State. This page summarises seed import requirements and conditions as

  • 16 June 2014

    Dryland salinity is an increasing problem across the Australian landscape and salt can also be a problem in gardens.

  • 27 January 2017

    Weather damage in barley is a common problem worldwide including the south coast of Western Australia (WA) where it is associated with the late spring/early summer rains.

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