ABOUT GRAPE PHYLLOXERA
Of the pests and diseases endemic to Australia, one of the greatest biosecurity threats to vineyards in South Australia is Grape phylloxera (Daktulsphaira vitifoliae). This tiny insect pest destroys grapevines and ornamental vines by feeding on their roots. Almost 75% of vines in South Australia are susceptible to attack. Once vines are infested, they will die within six years. There is no eradicative treatment, so infested vineyards must be replanted on phylloxera-resistant or tolerant rootstock. This is a costly exercise at around $60,000/hectare, and replanted vines will take about three years to produce a crop and longer to mature.
For more information on phylloxera lifecycle, how it spreads, signs of infestation in the vineyard and more, click on the ‘About Grape Phylloxera’ fact sheet.
Not all grape phylloxera are equal. There have been several hundred genetic strains of phylloxera documented worldwide, with Australia identifying 83 endemic strains. Click here for more information on strains.
Where is phylloxera in Australia and where is it not?
Phylloxera at present, is confined to regions in Victoria and New South Wales. South Australia, Western Australia, Northern Territory and Tasmania are designated ‘phylloxera-free’.
For policy, regulatory and management purposes, our wine regions are classified into Phylloxera Management Zones according to evidence of phylloxera presence, absence or unknown (untested) status:
- Phylloxera Exclusion Zones (PEZ) – a whole state or part thereof, recognised to be free of phylloxera.
- Phylloxera Risk Zones (PRZ) – an area of unknown phylloxera status (but never detected).
- Phylloxera Infested Zones (PIZ) – an area known to have phylloxera.
Movement of items (e.g. equipment, grapevine material and soil) that could potentially transfer phylloxera from one place to another are tightly controlled between these areas.
To confirm the Phylloxera Management Zone (PMZ) your vineyard is in, either refer to the Phylloxera Management Zones in Australia map or use our interactive maps tool to choose your wine region and find out which PMZ it’s in.
Farm-gate hygiene practices
There are a number of simple activities you can carry out to reduce the likelihood of a phylloxera incursion in your vineyard. Refer to our Farm-gate hygiene section.
Additional information on phylloxera and farm-gate hygiene can be found in a range of articles below:
Pest and Disease
- WBM – Wine Business Magazine Phylloxera Strains Matter May/June 2017
- Daily Wine News Phylloxera Spreads North in the Yarra Valley 5 May 2017
- Grapegrower and Winemaker Magazine Vigilance Required in Phylloxera Fight Feb 2017
- WBM – Wine Business Magazine Phylloxera Jan/Feb 2017
- Weekly times Vineyard biosecurity: Call to arms to rid state of phylloxera 7 September 2017
- Grapegrower and Winemaker Can you tick these 10 boxes? August 2017
- Murray Pioneer Vintage and hygiene 15 Mar 2017
Field detection project
To find out more about our current ‘DNA testing for early and accurate detection’ project, click here.
Featured photo courtesy of Agriculture Victoria (Rutherglen)