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Septoria spot on external orange fruit surface showing characteristic small spots

Septoria spot of citrus: declared pest

28 November 2013

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.

Typical symptoms of Fusarium crown rot in strawberry

Crown and root rot diseases of strawberries

13 January 2014

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

Severe powdery mildew infection on strawberry

Powdery mildew of strawberries

13 January 2014

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.

Bowl full of single flowers in shades of red, mid pink and light pink with a darker eye.

Downy mildew of impatiens

30 April 2014

Downy mildew is caused by a fungus which has been affecting impatiens in Western Australia since 2007 after being found in Victoria the previous year.

Septoria spot on external orange fruit surface showing characteristic small spots. Photo © NSW Department of Primary Industries.

Septoria spot of citrus: pest data sheet

25 February 2014

Septoria spot of citrus (Septoria citri) is an exotic disease to Western Australia. It is a serious pest that causes fruit blemishes, affecting saleability for the fresh fruit market.

Symptoms of Citrus black spot on oranges

Citrus black spot: declared pest

2 April 2014

Citrus black spot (Guignardia citricarpa) is a fungal disease of citrus trees that can affect external fruit quality. This disease is not known to occur in Western Australia.

Pink disease on citrus stem. The white and pink material shown is the fungus which has produced an encrusted growth on the stem.

Pink disease of citrus: declared pest

1 May 2014

Pink disease (Erythricium salmonicolor) is a serious pest of citrus that can affect entire limbs and/or kill trees. This pest is not known to occur in Western Australia.

Erythricium salmonicolor growth on citrus stem showing the white-pink-grey coloured hyphal mass

Pink disease of citrus: pest data sheet

1 May 2014

Pink disease (Erythricium salmonicolor) is an exotic pest to Western Australia. It is a serious disease of citrus than can result in yield losses due to limb and tree death.

Fruit symptoms of dry rot. Photo courtesy of Dr Roger Shivas, DPIF 2005.

Dry rot of citrus: declared pest

29 May 2014

Dry rot (Eremothecium coryli) is a serious pest of citrus that can affect fruit palatability and citrus rootstock seed production. This pest is not known to occur in Western Australia.

Fruit symptoms of dry rot. Photo courtesy of Dr Roger Shivas, DPIF 2005.

Dry rot of citrus: pest data sheet

29 May 2014

Dry rot (Eremothecium coryli) is an exotic pest to Western Australia.

Net type net blotch has thin brown streaks that often cross with a net like appearance

Managing net-type net blotch of barley in Western Australia

13 December 2012

Net-type net blotch is a fungal disease that can reduce yield and grain quality of barley crops.

Yellow sigatoka

Diseases of bananas in the Ord River Irrigation Area

26 February 2014

The ORIA is free of major banana diseases found in the Northern Territory and Queensland, such as Panama disease and black sigatoka.

Plant with purple stems and dark green leaves covered with a bright yellow powder-like fungus.

Myrtle rust: a threat to Western Australia

8 April 2014

Myrtle rust is a serious disease that attacks and kills many plants belonging to the Myrtaceae family including eucalypts, bottlebrushes, paperbarks and peppermint trees.

Grape leaf infected with Phomopsis viticola showing the characteristic yellow halos surrounding black spots

Phomopsis viticola: prohibited disease

6 June 2014

Phomopsis cane and leaf spot is caused by the fungus Phomopsis viticola which is a prohibited organism in Western Australia.

Yellow spot appears as tan elongated lesions with yellow margins, with leaf dying back from tip

Managing yellow spot and septoria nodorum blotch in wheat

5 December 2013

Leaf spot diseases affecting wheat in Western Australia are septoria nodorum blotch, yellow spot and septoria tritici blotch.

Black background with one bunch of black grapes and one bunch of green grapes on vine leaves.

Table grape growing, non commercial

26 February 2014

This article outlines the non commercial growing of table grapes.

Close up of young wheat plant showing yellow leaf spot disease

Are early fungicide applications effective for yellow spot and septoria nodorum blotch in the low rainfall zone 2014 trial report

26 September 2014

Previous research in high rainfall zones or above average seasons has shown that in cases where leaf spot disease levels are high very early, fungicide application at or before first node (Z31) is

Close up of sclerotinia stem rot in canola

Fungicide timing for control and yield loss from sclerotinia sclerotiorum in canola 2014 trial report

26 September 2014

For successful management of sclerotinia stem rot in most years it is critical to target fungicides at early stage of bloom (20-30%), but optimal timing can vary depending on the season, in particu

Pathologist in laboratory in front of microscpoe holding apple covered with fungal spores

DDLS - Plant pathology services

20 November 2013

DDLS - Plant pathology is a service area under the Department of Primary Industries and Regional Development's Diagnostic Laboratory Services (DDLS).

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Managing sclerotinia stem rot in canola

6 January 2014

Sclerotinia stem rot is a fungal disease of canola, that can cause significant yield losses exceeding 20% under conducive conditions.  Initially only common in parts of the northern wheatbelt, it i

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