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AIFST Fresh Produce Food Safety Summit
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Carabid beetles as sustainability indicators
Clubroot - Nursery Access
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Clubroot - Nursery Response
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Hangzhou Foods
IPM - approach to Potato crops
IPM - approach to practice change
IPM - Potato/Tomato Psyllid
Lettuce Anthracnose Management
Native Plants - Food Safety
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NY9406 Downy Mildew on seedlings - factsheet
NY9406 Downy Mildew on seedlings - report
NY9406 Downy Mildew on seedlings - review
NY97011 Downy Mildew on seedlings - extension
NY97011 Downy Mildew on seedlings - notes
Parsley Disease Handbook
Parsnip Variety Trials
Phytochemical composition of food
Phytochemicals and Healthy Foods
Reclaimed water - risk model
Reclaimed water use in Victoria
Recycled Water Quality - Lettuce
Sclerotina - Lettuce Conference 2002
Strategies for Control of Root Rot in Apiaceae Crops
Summer Root Rot in Parsley
Thrips & Viruses
Tobamoviruses
Vegetable Disease Program
Vegetable Diseases in Australia
Vegetables Viruses
VG00013 Leek Diseases
VG00016 Environmental Performance
VG00026 IPM Eggplant & Cucumber
VG00031 Peas - downy mildew & collar rot
VG00031 Peas - Downy Mildew - metalaxyl resistance
VG00034 Capsicum & Chillies - weed control
VG00044 Clubroot - Applicator design
VG00044 Clubroot - Chemical control
VG00044 Clubroot - Implementing a control strategy
VG00044 Clubroot - Managing outbreaks
VG00044 Clubroot - Nutritional amendments
VG00044 Clubroot - Strategic application
VG00044 Clubroot – Introduction
VG00044 Clubroot – Limes and liming
VG00044 Clubroot – Prevention & Hygiene
VG00044 Clubroot – Understanding Risk
VG00044 Total Clubroot Management
VG00048 Alternate fungicides for sclerotinia control
VG00048 Brassica green manure conference paper 2004
VG00048 Brassica Green Manure Update 16
VG00048 Brassica Green Manure Update 18
VG00048 Diallyl Disulphide - DADS - trials
VG00048 Lettuce - Sclerotinia biocontrol
VG00048 Lettuce Sclerotina - Biocontrols
VG00058 Pea - Collar Rot
VG00069 Cucumber & Capsicum diseases
VG00084 Beetroot for Processing
VG01045 Bunching Vegetables - disease control
VG01049 Compost - Benefits
VG01049 Compost - Choosing a Supplier
VG01049 Compost - Getting Started
VG01049 Compost - Introduction
VG01049 Compost - Safe Use
VG01049 Safe Use of Poultry Litter
VG01082 Broccoli Adjuvant Poster
VG01082 Broccoli Head Rot
VG01096 Article - White Rot research
VG01096 Integrated Control of Onion White Rot
VG01096 Poster - Alternative fungicides
VG01096 Poster - Diallyl Disulphide - DADS
VG01096 Poster - Trichoderma biocontrol
VG01096 Poster - Trichoderma optimisation
VG01096 White Rot - Spring Onions
VG02020 Capsicum - Sudden Wilt
VG02035 Capsicum - virus resistance
VG02105 Vegetable Seed Dressing Review
VG02118 White Blister
VG03003 Lettuce - Varnish Spot
VG03092 Lettuce - Shelf Life
VG03100 Retailing Vegetables - Broccolini®
VG04010 Maximising returns from water
VG04012 Hydroponic lettuce - root rot
VG04013 Brassica White Blister
VG04013 White Blister - Control Strategies
VG04013 White Blister - Race ID
VG04013 White Blister - Risk Forecasting
VG04013 White Blister - Symptoms
VG04013 White Blister - Workshop Notes
VG04014 Better Brassica
VG04014 better brassica - roadshow model
VG04014 better brassica - workshop notes
VG04014 Clubroot Guidebook
VG04014 Clubroot Poster
VG04015 Benchmarking water use
VG04016 Celery leaf blight - Poster
VG04016 Celery Septoria
VG04019 Nitrate & Nitrite in Leafy Veg
VG04021 Vegetable Seed Treatment
VG04025 Parsley Root Rot
VG04059 Diagnostic test kits
VG04061 White Blister - alternative controls
VG04061 White Blister - Workshop 2007
VG04062 Beetroot Study Tour
VG04067 IPM - Lettuce Aphid
VG05007 Onion White Rot - post plant fungicides
VG05008 IPM - Cultural Controls
VG05014 IPM - Native vegetation pt1
VG05044 IPM - Consultants Survey
VG05044 IPM - Grower Survey
VG05044 IPM - Lettuce Aphid Trials
VG05044 IPM - Lettuce Disease Poster
VG05044 IPM - Predatory Mites
VG05044 IPM - Project Summary
VG05045 Parsnip Canker
VG05051 Climate Change
VG05053 Rhubarb Viruses
VG05068 Baby Leaf Salad Crops
VG05073 Mechanical Harvesting
VG05090 Green Bean - Sclerotinia
VG05090 Rhizoctonia Groups
VG06014 Revegetation for thrip control
VG06024 IPM - Native vegetation pt2
VG06046 Parsley Root Rot
VG06047 Celery - Septoria Predictive Model
VG06066 LOTE Grower Communications
VG06086 IPM - Potential & Requirements
VG06087 IPM - Lettuce Aphid
VG06087 IPM - Toxicity testing
VG06088 IPM - Lettuce Aphid trials
VG06092 Pathogens - Gap Analysis
VG06092 Pathogens of Importance - poster
VG06140 Beetroot - colour quality
VG07010 Systemic aquired resistance
VG07015 Curcubit field guide
VG07070 Conference Notes 2008
VG07070 Foliar diseases
VG07070 Nitrogen & lettuce diseases
VG07070 Predicting Downy Mildew on Lettuce
VG07070 White Blister - Chinese Cabbage
VG07070 White Blister - Cultural Controls
VG07070 Workshop Notes - 2008
VG07070 Workshop Notes - 2010
VG07125 IPM - soilborne diseases
VG07126 Biofumigation oils for white rot
VG07126 New approaches to sclerotina
VG07127 White Blister - Alternative Controls
VG08020 Optimising water & nutrient use
VG08026 Pythium - field day
VG08026 Pythium - workshop 2010
VG08026 Pythium control strategies - overview
VG08107 - Carbon Footprint - workshop
VG08107 - Carbon Footprint part 1 - definitions
VG08107 - Carbon Footprint part 2 - issues
VG08107 - Carbon Footprint part 3 - calculators
VG08107 - Carbon Footprint part 4 - estimate
VG08107 - Carbon Footprint part 5 - users
VG08107 - Carbon Footprint part 6 - options
VG08426 Parsnip - Pythium Notes 2010
VG09086 Evaluation of Vegetable Washing
VG09159 Grower Study Tour- Spring Onions & Radish
VG96015 Carrot Crown Rot
VG96015 Carrot Defects - Poster
VG97042 Export - Burdock, Daikon and Shallots
VG97051 Pea - ascochyta rot
VG97064 Greenhouse Tomato and Capsicum
VG97084 Green Bean - white rot
VG97103 Celery Mosaic Virus
VG98011 Carrot - Cavity Spot
VG98048 Lettuce - Adapting to Change
VG98083 Lettuce - rots & browning
VG98085 GM Brassicas
VG98093 Microbial hazards - review
VG98093 Safe vegetable production
VG99005 Quality wash water
VG99008 Clubroot - rapid test
VG99016 Compost and Vegetable Production
VG99030 Globe Artichokes - value adding
VG99054 Onions - Theraputic Compounds
VG99057 Soil Health Indicators
VG99070 IPM - Celery
Victorian soil health
VN05010 Folicur - alternative carriers
VN05010 Onion White Rot - Fungicides
VN05010 Onion White Rot - summary
VX00012 Metalaxyl breakdown
VX99004 Clean & Safe Fresh Vegetables
Whitefly & Viruses
Contact Details
Vegetable Growers Association of Victoria

Mail Box 111,
Melbourne Markets

542 Footscray Rd,
West Melbourne, VIC, 3003

Tel: 03 9687-4707
Fax: 03 9687-4723
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VG06014 Revegetation for thrip control

Horticulturalists on the Northern Adelaide Plain continue to experience serious crop losses due to Tomato Spotted Wilt Virus (TSWV).

A key source of TWSV are the pest thrips including Western Flower Thrip (Frankliniella occidentalis) which transmit the virus are exotic weeds which infest land around horticultural production facilities in the region.

In addition, the region has a degraded natural landscape and there is a serious lack of commercial incentives to improve biodiversity in the area. By 1889 exotic weeds had infested parts of the region and remaining woodlands in the Angle Vale and Virginia areas were cleared for market gardens after World War I.

Previous research, has shown that TSWV vectoring thrips are rare on a range of native broadleaf plants and grasses. In addition, a number of potentially beneficial arthropods were present on native plants in the region.

Here we build on these findings by examining how key insect species interact with native plants and nearby crops, in attempts to understand how we can manipulate the environment at a property scale, to suppress/enhance specific insect species.

As part of this project we established native revegetation plots near several horticultural production facilties in the region.

This report details the research and extension undertaken in this project and covers the key findings, industry implications and recommendations.

Author : Glenys Wood

Testing the recovery of plant refuges
Download 440kb

Key Findings :

  • Key findings confirm that judicious placement of select endemic plant species near horticultural facilities has potential for positively impacting on pest management and is likely to be more effective than traditional bare-earth buffers.

  • A new parasitic wasp (Ceranisus sp.) was identified that has been shown to efficiently parasitise western flower thrips in culture. This wasp is closely associated with the saltbush Rhagodia parabolica and may also use native thrips species as an alternative host.

  • We have also identified a Telenomus sp. wasp sampled from native vegetation that parasitises the well known pest Nysius vinitor, the Rutherglen bug. These wasps are likely candidates for delivering biological control of both of these wide spread pests.

  • Breeding of a lacewing generalist predator Micromus tasmaniae is shown to be associated with a native grass, Austrodanthonia linkii, suggesting this will be key species for manipulating M. tasmaniae populations at property scale.

    Indications are that different endemic plant species will become important for different crops to enhance/suppress particular beneficial/pest species.

Important parasitic wasps were found in the vegetation at these sites
Top - saltbushes - Rhagodia parabolica and Enchylaena tomentosa
Bottom - native grass - Austrodanthonia linkii

Key Findings (cont) :

  • Growers investing in native plant refuges to enhance natural enemy populations should see this as a marketing opportunity rather than simply another expense.

  • At property scale, select native plants used in the context of best practice Integrated Pest Management systems, can contribute to suppression of western flower thrips and subsequent reduction of TSWV is possible.

  • Feedback from growers on the NAP indicates that the benefits of native vegetation are well understood. Therefore grower acceptance of these principles has increased with time, however large-scale adoption remains the key to positioning the industry to achieve significant benefits.

  • Growers must be willing to be proactive in increasing the level of integration of non chemical controls. Reduced efficacy and tolerance of chemical use for pest control will have long term consequences industry wide. In the current economic climate, integrating new technologies that increase agricultural sustainability by reducing losses generated by pests, disease and pesticide use are urgently required for the industry to move forward.

SEE ALSO :

VG05014  Native Vegetation and Pest Control - part 1 (2006)

Download 306 kb  VegeNote : Native Vegetation and Pest Control (2008)

Acknowledgements :

Special thanks go to Nick Stevens for his valued contribution to identifying our parasitoids. Thanks to consultants Mr Bill Doyle (botanist) and Mr Mario Niesingh (revegetation provider - Environmental Revegetation Australia) for assistance and advice on planting native plants.

We would also like to thank members of the ‘Revegetation at property scale’ project management team Tony Burfield, Domenic Cavallaro, Bill Doyle, Gavin Limbert and Stacee Brouwers for their considerable knowledge, advice and practical support towards the delivery of the project on the Northern Adelaide Plains.

Thank you also to the vegetable growers and their families Mr Thien Vu and Mr Dino Mussolino who kindly hosted two of our on-farm trials in Virginia, and for the constant support provided by the Virginia Horticulture Greenhouse Modernisation Project.

To the City of Playford revegetation staff, Green Corps and the Youth Conservation Council for planting hundreds of native plants.

Special thanks to Liz Millington, Anthony Fox, and Jeanette Chapman for working so tirelessly with us to close the gap between Horticulture and Natural Resources Management on the Northern Adelaide Plains.

We thank all SARDI Entomology Unit staff who generously provided a diverse range of support over the previous 6 years.

This project has been facilitated by the South Australian State Government, Rural Industries Research and Development Corporation (RIRDC), Virginia Horticulture Centre, The City of Playford and Horticulture Australia Limited (HAL) in partnership with AUSVEG through the National Vegetable Research and Development Levy.

The Australian Government provides matched funding for all HAL’s R&D activities.


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