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Tag archive: virus

DAFWA Webinar – Wheat Streak Mosaic Virus with Brenda Coutts

August 2015 Brenda Coutts from DAFWA discusses Wheat Streak Mosaic Virus from symptoms, through risk cycles and onto management options. Summary: Wheat Streak Mosaic Virus (WSMV) infects all cereals and many annual grasses. It is spread by wheat curl mite and is seed-borne. Infection at early growth stages (pre-flowering) can […]

Latest on Canola disease – 2015 GRDC Update papers

Keep up with the latest research information on Canola diseases including BWYV, sclerotinia and blackleg. Below are the take home messages from papers presented at the GRDC Updates in February and March 2015. There were no papers in the Western or Northern regions. Click the paper titles to view the […]

Sunflower Growers Guide to Integrated Disease Management

GRDC Sunflower tips and tricks cover

By Sue Thompson, University of Southern Queensland. A new guide to Successful sunflower production using integrated disease management (IDM) provides information on managing diseases in sunflower within the context of the whole farm rotation. Comprehensive ready reckoner tables allow growers to review the impact that rotational crops will have on […]

BWYV learnings from 2014

Brenda Coutts, DAFWA, talks about the Beet western yellows virus (BWYV) outbreak in canola in South Australia in 2014 at the GRDC updates in Adelaide, February 2015. She outlines management strategies that can help reduce the amount of BWYV. Brenda joined Jenny Davidson (SARDI) and Paul Umina (cesar) as part […]

BWYV: Reducing aphid and virus risk in 2015

In 2014, canola crops across SA, western Victoria and some parts of NSW were severely affected by beet western yellows virus (BWYV) (synonym; turnip yellows virus). Significant rainfall over much of the southern cropping zone in January 2015 has initiated a green bridge, which has the potential to host large […]

Green peach aphid and Beet western yellows virus – update 1 Oct 2014

Green Peach Aphids

As growers in the southern region move closer to the ‘business end’ of the cropping season the true effects of earlier infestations of Green Peach Aphid (GPA) (Myzus persicae) and Beet Western Yellows Virus (BWYV) in canola crops are being realised. The encouraging news is that although early infected South […]

Viruses in pulse crops in the Northern region

Chickpea and other pulse crops in the Northern region can be significantly affected by a range of aphid transmitted viruses as was observed in chickpea crops in 2012 and 2013. The effect of virus infection on plants include stunting, reddening, chlorosis, distortion, shoot tip wilting, reduced yield and grain quality […]

Spread of Beet western yellows virus

BWYV map 2014 Southern Australia

Updated 17/09/2014 Click here to view larger version of the map (559 kb) This map shows the locations of samples which tested positive (red) or negative (blue) for Beet western yellows virus (BWYV) in NSW, SA and Victoria as of 17/09/2014 by closest town.  Below is a map of West […]

Update on BWYV in early infected canola in SA

Early BWYV in canola

These canola crops in the Eudunda area of the Lower North in South Australia were infected with BWYV at the rosette stage. SARDI pathologists and entomologists first visited them in on the 17th of June. In late June the young plants initially dropped all leaves and then started to re-shoot […]

BWYV in Canola – Don McCaffery NSW DPI interview

BWYV slideshow title page

Don McCaffery, Technical Specialist (Pulses and Oilseeds), NSW DPI talks about the beet western yellows virus (BWYV) outbreak in canola. He discusses the spread of the virus in NSW, monitoring for green peach aphid (GPA), considerations for spraying, virus symptoms, potential yield impact and implications for 2015. Growers are advised […]

BWYV in Canola in NSW (workshop slideshows)

BWYV slideshows title page

In 2014 south eastern Australia experienced the right conditions for the growth of green peach aphid (GPA) leading to significant spread of the Beet western yellows virus (BWYV) in canola. These presentations on BWYV in canola and GPA were given at Wagga Wagga, NSW 5 August 2014 by NSW Department […]