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Potato cyst nematode

About PCN I DPI management program I Management zones I On-farm hygiene I PCN detection at Thorpdale I Media releases I Reporting

Latest information
PCN detection at Thorpdale: Interim arrangements for interstate movement of potatoes
Thorpdale potatoes set to be exported interstate (Ministerial media release)
The Warragul Plant Protection District was declared in May 2008.

About potato cyst nematode (PCN)

Potato cyst nematode (PCN) is a microscopic, worm-like organism which feeds on the roots of potatoes, tomatoes and other plants of the Solanaceae family. It lives in the soil and can easily be spread by the movement of host plants or the soil attached to plants, bulbs, advanced trees and agricultural equipment.
PCN can reduce crop yields, increase production costs and result in trade restrictions for potatoes.
PCN is not a human health issue.
Further details can be found in the PCN Information Note.

To view this document you will need a copy of Adobe Acrobat, available from the Adobe website (external link).

PCN cysts on roots
PCN cysts can survive for many years on soil or organic matter

DPI management program

DPI's role in PCN management is based on:
  • establishing controls and advising on practices to limit the spread of PCN to unaffected districts and from affected districts
  • improving the knowledge of PCN distribution in risk areas
  • developing effective legislation
  • developing state and regional market access programs
  • improving industry awareness of PCN issues.
DPI works closely with Victorian potato industry groups and other stakeholders in conducting the PCN management program.
PCN control road sign
PCN management zones in Victoria

Three Plant Protection Districts (PPDs) have been declared to prevent the entry of PCN into the specified areas:
Warragul PPD (2008)
Brochure (PDF 632KB)
Map (PDF 1.4MB)
Media release (PDF 43KB)
Order (PDF 178KB)
Colac-Otway PPD (2006)
Brochure (PDF 1.5MB)
Map (PDF 503KB)
Order (PDF 19KB)
Portland PPD (2005)
Brochure (PDF 566KB)
Map (PDF 927KB)
Order (PDF 74KB)

Three Control Areas (CAs) have been declared by Order (PDF 44KB) to prevent the spread of PCN from the following areas:
Gembrook CA
Map (PDF 270KB)
Koo Wee Rup CA
Map (PDF 341KB)
Wandin CA
Map (PDF 533KB)

PCN has also been detected in other metropolitan areas, see overview map (PDF 119KB).

For information about the conditions of movement of plant materials, soil, machinery and other equipment into or out of PCN management zones, please contact DPI Plant Standards on (03) 8371 3500 or email plant.standards@dpi.vic.gov.au

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On-farm hygiene for PCN management

To reduce the risk of spreading PCN, on-farm hygiene practices need to be followed with respect to vehicles, people and used machinery and equipment.


PCN detection at Thorpdale October 2008

Interstate movement of potatoes (December 2008)
DPI Plant Standards and its interstate counterparts have negotiated interim arrangements for the interstate movement of potatoes (PDF 1.4MB). These arrangements apply to potatoes sourced from within 20km of the Thorpdale PCN detection and will be effective until 31 May 2009.

See also Ministerial media release:
Thorpdale potatoes set to be exported interstate

Updates
Tuesday, 2 December - PCN News 6
Wednesday, 19 November - PCN News 5
Wednesday, 12 November - PCN News 4
Wednesday, 5 November - PCN News 3
Tuesday, 28 October - PCN News 2
Thursday, 23 October - PCN News 1

See also media releases:
Promising start in efforts to control potato pest
Potato cyst nematode detected in Gippsland

Monday, 20 October
A suspected detection of PCN was found at Thorpdale during routine soil testing required by Victoria's certified seed potato scheme. The detection was confirmed as being PCN (Globodera rostochiensis) at DPI's Knoxfield diagnostic laboratory on Thursday, 16 October.

DPI convened a meeting with potato industry leaders in the Thorpdale region on Friday morning (17 October) to develop a joint strategy.

The implications of the detection, and the likely actions, were outlined at a later meeting of local potato growers and community leaders on Friday afternoon, with emphasis on the interstate market access situation for both seed and commercial potatoes. The meeting was well attended and growers were supportive of the proposed VFF/DPI/industry approach.

At this stage, no potato plant material or equipment used in potato production may be moved interstate from an area of 20km radius around the detection site, in accordance with interstate requirements - see the map (PDF 235KB). However, DPI has drafted interstate entry conditions for Thorpdale potatoes based on risk analysis. These will be presented to interstate quarantine managers later this week, as well as to the rest of the Victorian industry.

A soil surveillance program will also be undertaken to determine if and/or where the pest has spread in the district, which could be the basis for allowing trade to re-open.

PCN was most likely present in the paddock where it was detected before the current owners purchased the paddock. The current owners have not engaged in any practices to cause a build-up of the pest, nor breached any quarantine regulation.


Media releases
Thorpdale potatoes set to be exported interstate (PDF 38KB) 17/12/08
Promising start in efforts to control potato pest (PDF 38KB) 14/11/08
Potato cyst nematode detected in Gippsland (PDF 45KB) 17/10/08
Potato Plant Protection Districts - a reminder (PDF 41KB) 18/06/08


Reporting
If you suspect you may have PCN on your property, please contact DPI Plant Standards on freecall 1800 084 881 or email plant.standards@dpi.vic.gov.au





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