If you suspect that your plants may be infected with blueberry rust please call
Biosecurity Tasmania on 1800 084 881.
Blueberry rust in TasmaniaBlueberry rust was found on a North-West property in August 2016 and was identified on two smaller nearby properties in March 2017. Blueberry rust was detected on one property in the Kentish Municipality in October 2017. As part of ongoing surveillance undertaken by the Department, blueberry rust was detected on a fifth property in May 2018.
Because of the low likelihood of success of eradication, the scale of the current incursion, the impact on growers of an eradication effort and other factors, a management strategy has been implemented focussed on reducing the risk of movement of the disease and working with local industry to meet requirements to enable ongoing market access where blueberry rust import requirements are in place.
The ongoing surveys are part of this program.
The Department will continue to work closely with blueberry industries in coming months as well as interstate authorities to maintain future domestic market access.
Scientific assessment of current strategy
A regulated containment strategy is currently in place in response to the detection of blueberry rust in Tasmania.
Based on feedback from growers, the Department has undertaken a scientific assessment of potential treatments of blueberry rust to identify if any treatments were currently available that might enable eradication of the disease to be attempted based on the Tasmanian situation.
The assessment involved consulting with the Tasmanian Institute of Agriculture (TIA), the NSW Department of Primary Industries (NSW DPI) as well as Biosecurity Tasmania plant health specialists.
The scientific assessment by TIA concluded that the rust pathogen could not be eradicated from the State. The advice from NSW DPI was that they would not recommend defoliation on a commercial scale as it had no technical basis as a response technique.
Based on those assessments, the Department will continue to implement the regulated containment strategy and working with growers to enable ongoing market access.
Containment is a recognised response to pest and disease incursions that focusses on limiting movement of the disease and putting in place the requirements to enable ongoing market access.
- The containment response includes:
Strict quarantine measures on infected properties;
- Regular inspections of infected properties to ensure compliance with quarantine requirements;
- Ongoing surveillance of properties to provide confirmation of properties free of disease; and
- Working with industry to ensure good on farm hygiene at non-infected properties to reduce the risk of infection.
The Department will also continue to review relevant scientific information that becomes available that may inform its ongoing approach to the disease.
Download the documents
Scientific advice prepared by TIA on blueberry rust in Tasmania (128Kb)
Advice from NSW DPI - defoliation and blueberry rust (89Kb)
Review of the Current DPIPWE Response to Blueberry Rust (331Kb)
What is blueberry rust?
Blueberry rust (Thekopsora minima) is a serious disease of blueberries that causes extensive defoliation and may cause plant death on plants with severe infections.
Blueberry rust is a fungi and is classified under Tasmania's
Plant Quarantine Act 1997 as a List A disease.
What to look for:
- Initial small yellow, chlorotic leaf spots on upper surface of young leaves
- Lesions turn rust/brown coloured and enlarge as the infection progresses (Fig 1.)
- Yellow-orange powdery pustules develop on the underside of leaves (Fig 2.)
- Similar pustules may also appear on blueberry fruit (Fig 3.)
- Premature leaf drop and defoliation
(Click to enlarge images)
When do symptoms first appear?
In the field, the symptoms appear on leaves by mid-season at any growth stage of plants and on fruits by late season.
How does blueberry rust spread?
The disease spreads by airborne spores mainly via wind. In glasshouse environments, spores can be carried by people, on clothing for example, when walking past and contacting plants.
What to do if you suspect you have an unusual plant disease.
It's very important that you not disturb or move the plant. Care should also be taken to ensure that any clothes or equipment do not become contaminated.
You should, as soon as possible, phone the plant disease hotline on
1800 084 881 and report the symptoms noticeable on the plant.
Ways you can protect your crops
Adopt a range of farm biosecurity measures that will assist in protecting your property from the entry and spread of pests and diseases. Farm biosecurity is a shared responsibility, and that of every person visiting or working on your property.
- Ensure you and your staff are aware of plant diseases, and are familiar with symptoms
- Disease identification information should be on-site and be easily accessible to all staff and visitors
- Limit the access of people (visitors and staff) onto your property
- Disinfect all equipment/vehicles that move off-site and return to operate on the property
- Implement a hygiene protocol for essential visitors (contractors, suppliers, etc)
- Restrict all non-business vehicles from entry onto the property
- Minimise or allocate specific staff who might come in contact with host material
- Source plant material from known professional growers with good accreditation
- Inspect imported blueberry host material prior to introduction to your property
For detailed information, together with a range of farm biosecurity resources that will assist in protecting your property – and livelihood – visit the Farm Biosecurity Program website (the Program is a joint initiative of Animal Health Australia (AHA) and Plant Health Australia (PHA).
DPIPWE will continue to work with industry in efforts to control and contain blueberry rust in Tasmania. Market access for the 2017/2018 season has now been finalised for those businesses wanting to export to Victoria and South Australia.
Businesses that wish to export fruit to Victoria and South Australia will need to register, registration details and further infomation on business requirements can be obtained by contacting the Domestic Trade and Industry Liaison Officer via the email link at the base of this page.
The Department and Fruit Growers Tasmania will work together to develop a Farm Hygiene Program for berry growers.
Funding has been made available to Fruit Growers Tasmania (FGT) to Implement the program, which will be targeted to blueberry growers. The aim of this program is to assist small growers, in particular, to adapt operations and protect their farms from a range of pests and diseases and to support them in management for market access requirements.
Who to contact
Market access information: Domestic Trade & Liaison Officer (Plant Biosecurity) Tel: (03) 6777 2160
Fruit Growers Tasmania Tel (03) 6169 2059 firstname.lastname@example.org
What has occurred
State wide surveys were undertaken during the 2016/17 season, with an extra focus on export business, these crops and fruit were inspected to meet market access requirements.
What will happen in future seasons?
Continued state wide surveys of blueberry growing properties will be required each season. Three complete surveys will be required each year with at least two being within the cropping season.
Remember if you suspect that your plants may be infected with blueberry rust please call
Biosecurity Tasmania on 1800 084 881.