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18th Australasian Weeds Conference (2012)

"Developing Solutions to Evolving Weed Problems"

The Sebel and Citigate Albert Park, Melbourne, Victoria, Australia.
8-11 October 2012.
Peer-reviewed proceedings edited by Valerie Eldershaw.
Published by Weed Society of Victoria Inc.
ISBN 978-0-646-58670-0

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Sources and spread of new weeds

In the footsteps of cows. Using technology to predict new weed incursions
Scott Charlton, Robyn Henderson and Michael Michelmore   pp. 1-4
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Predicting the dispersal of hawkweeds (Hieracium aurantiacum and H. praealtum) in the Australian Alps
Roger Cousens, Felix Heydel, Katherine Giljohann, Oliver Tackenberg, Mohsen Mesgaran and Nicholas Williams   pp. 5-8
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Weeds of tropical Australia: how do they get here?
Barbara M. Waterhouse and Andrew A. Mitchell   pp. 9-12
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Parthenium incident in the Pilbara, Western Australia: how is this 'a good news story'?
Anna-Marie Penna and Martin MacFarlane   pp. 13-16
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Mikania micrantha H.B.K. - a potential and economical threat to global biodiversity with special emphasis on Indian context
Achyut Kumar Banerjee and Anjana Dewanji   pp. 17-20
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Weed management in aquatic systems

Ecology of the submersed aquatic weed Cabomba caroliniana in Australia
Tobias O. Bickel   pp. 21-24
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Rotorua lakes weed cordons – a freshwater biosecurity tool
Hamish Lass   pp. 25-29
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Herbicide control of submerged bog moss (Mayaca fluviatilis Aubl.)
Barbara A. Madigan and Joseph S. Vitelli   pp. 30-33
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Surveying salvinia (Salvinia molesta) and para grass (Urochloa mutica) on a floodplain system in Northern Australia
Daniel McIntyre   pp. 34-36
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Water hyacinth (Eichhornia crassipes (Mart.) Solms) seed longevity and the implications for management
Paul R. Sullivan and Rod Wood   pp. 37-40
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Potential new herbicides for submerged aquatic weeds in Victoria
Tony M. Dugdale, Trevor D. Hunt, Daniel Clements and Kym Butler   pp. 41-44
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Weed management for biodiversity conservation

Manipulating shrub cover on Victorian fuelbreaks to reduce weed invasion
Robin J Adair and Kym L. Butler   pp. 45-48
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Spatial prioritisation for management of gamba grass (Andropogon gayanus) invasions: accounting for social, economic and environmental values
Vanessa M. Adams and Samantha Setterfield   pp. 49-52
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Chasing the lion''s tail. The value of program review: a case study from the management of Leonotis nepetifolia (L.) R.Br. in Rinyirru (Lakefield) National Park
John R. Clarkson, A. (Tony) C. Grice and Colin Dollery   pp. 53-56
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Control of wards weed (Carrichtera annua) on rare species translocation sites at Westonia in the eastern wheatbelt of Western Australia
Bob Dixon   pp. 57-58
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Managing native grasslands to minimise invasion by Chilean needle grass (Nassella neesiana)
Ian G. Faithfull, Colin Hocking and David A. McLaren   pp. 59-62
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Management of orange hawkweed in New South Wales
Jo Caldwell, Mark A. Hamilton, Peter J. Turner, Stephen B. Johnson and Genevieve Wright   pp. 63-64
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Thomson Aberfeldy Demonstration Site - a strategic weed project. Implementing Victoria''s biosecurity approach to pest management on public land
Penny Gillespie, Rebecca James and Sally Lambourne   pp. 65-66
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Growth and control of Chilean flame creeper (Tropaeolum speciosum)
Trevor K. James, Clayson Howell and Anis Rahman   pp. 67-70
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Management recommendations for invasive Scotch broom (Cytisus scoparius L.) in Australia and USA depend on invasion stage, demographic targets and management cost
Natalie Z. Kerr, Peter W.J. Baxter and Yvonne M. Buckley   pp. 71-72
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Identification of the invasive weeds, camel melon, prickly paddy melon and colocynth in Australia – a morphological and molecular approach
Razia S. Shaik, David Gopurenko, Geoffrey E. Burrows, Nigel A.R. Urwin, Brendan J. Lepschi, Shane M. Hildebrand and Leslie A. Weston   pp. 73-77
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Invasive weed control in grassy ecosystems
Steve Taylor   pp. 78-80
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Wildfire stimulates boneseed germination 8.5 years after adult plants cleared
Keith Briden and Kate G. McAlpine   p. 81
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White weeping broom (Retama raetam) control on Yorke Peninsula
Ken Rudd   pp. 82-83
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Evaluation of weed management outcomes

An annual cycle of review and planning for weed management by a mining company in Northern Australia
Cherie Gellert   pp. 84-87
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Spread, specificity and initial impact of the white-smut fungus Entyloma ageratinae on mistflower in Australia
Louise Morin, Melissa Piper, Andrew White and Shon Schooler   pp. 88-90
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Managing a Weed of National Significance for the conservation of a Critically Endangered Species: challenges and trade-offs
Paul O. Downey, Justin Hurley Ley, Nicole Sykes, and William B. Sea   p. 91
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Eradication: lessons learnt from 17 years of the National Siam Weed Eradication Program
Mick Jeffery   pp. 92-95
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New technology

Gorse control using ultra low volumes of herbicides and unmanned aerial vehicles
John Moore   pp. 96-98
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The Weed Seed Wizard: have we got a solution for you!
Sally C. Peltzer, Alex Douglas, Art Diggle, George Wyatt and Michael Renton   pp. 99-102
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The design and the development of a hyperspectral unmanned aircraft mapping system for the detection of invasive plants
Remy L. Dehaan, Leslie A. Weston and Rod Rumbachs   pp. 103-107
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A new method for assessing herbicide damage in weeds
William B. Sea, Nicole Sykes and Paul O. Downey   pp. 108-111
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Development of a custom weed mapping application for annual weed surveys by a mining company in the Northern Territory of Australia
Daniel McIntyre   pp. 112-115
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Weed management for biodiversity conservation

Let's get strategic: an invasive plant prioritisation process for DEC WA
Kellie Passeretto and Nisha Powell   pp. 116-119
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Implementation of strategic weed management for biodiversity conservation in protected areas of New South Wales
Peter J. Turner, Leonie K. Whiffen, Ruth Armstrong and Mark A. Hamilton   pp. 120-121
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Metsulfuron-methyl impact on native vegetation in the Daintree lowlands, far-north Queensland, Australia
Hugh J. Spencer   pp. 122-125
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Rotoroa Island - Integrated weed management for biodiversity outcomes
Jo Ritchie   pp. 127-130
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Declines and rots

A preliminary investigation of prickly acacia dieback (Acacia nilotica ssp. indica)
Ahsanul Haque, Victor Galea, Ken Goulter, Andrew Bissett and Rieks D. van Klinken   pp. 131-134
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Bulb rot in live Allium triquetrum by Pectobacterium carotovorum subsp. carotovorum
Parsa Tehranchian, Robin Adair and Ann C. Lawrie   pp. 135-141
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Effect of season on the efficacy of artificial inoculation of Nigrospora oryzae in Sporobolus fertilis
David Officer, Sethu Ramasamy and Ann C. Lawrie   pp. 142-145
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Blackberry decline: a major disease of Rubus anglocandicans in south-west Australia
Sonia Aghighi, Lee Fontanini, Paul B. Yeoh, Giles E. St.J. Hardy, Treena I. Burgess and John K. Scott   pp. 146-149
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Investigations into natural serrated tussock (Nassella trichotoma) die-back events observed in Tasmania and NSW
David McLaren and Julio Bonilla   pp. 150-153
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Keynote

Weed management to optimise seabird habitat in the Phillip Island Nature Park
Jarvis Weston   p. 154
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Weed management in grazing systems

Alternative herbicides for flupropanate resistant serrated tussock
Charles Grech, Tamara Threlfall, Masha Fridman and David McLaren   pp. 155-158
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Effect of 10 years of organic dairy farming on weed populations
Kerry C. Harrington, Mark A. Osborne and Peter D. Kemp   pp. 159-162
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Hymenachne headaches: addressing management issues associated with a conflict species
Craig C. Magnussen   pp. 163-165
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Putting fireweed on the front burner: improving management and understanding impact
Brian M. Sindel, Michael J. Coleman and Ian J. Reeve   pp. 166-169
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Improving regional adoption of weed control: a case study
Peter J. Berney, Brian M. Sindel, Michael J. Coleman, Graham R. Marshall, Ian J. Reeve and Paul E. Kristiansen   pp. 170-173
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Allelopathic effect of canola on annual ryegrass
M. Asaduzzaman, Min An, James E. Pratley, David J. Luckett and Deirdre Lemerle   pp. 174-177
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Assessment of flupropanate tank mixtures: compatibility with other herbicides
Charles Grech, Tamara Threlfall and David McLaren   pp. 178-180
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Allelopathic potential of Amaranthus viridis L. against annual ryegrass
Shamima Sultana and M. Asaduzzaman   pp. 181-183
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Glyphosate resistance symposium

Management of glyphosate resistant weeds in non-agricultural areas
Jenna Malone, Anthony Cook, Hanwen Wu, Abul Hashem and Christopher Preston   pp. 184-186
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Policy and planning

Meeting objectives of the Australian Weeds Strategy through collaborative management of icon weed species: from the national to the local level
Hillary Cherry, Peter J. Turner, Nicole Strehling and Drew English   pp. 187-190
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Assessing new Weeds of National Significance candidates
Bertie R. Hennecke   pp. 191-194
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Economic tools ≠ policy actions. Why benefit cost analyses are not a policy panacea for weedy but commercially valuable plant species
Stephen B. Johnson   pp. 195-198
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Aligning policy and practice - managing WoNS in the South Australian context
Shauna Potter, Greg Patrick and Justine Drew   pp. 199-202
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Environmental impact on biocontrol agents and secondary chemistry of Paterson''s curse (Echium plantagineum)
Paul A. Weston, Leslie A. Weston and Shane Hildebrand   pp. 203-207
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Buffel grass in South Australia - development of pest plant policy
Tim Reynolds   pp. 208-210
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Weed management in grazing systems

Management of flaxleaf fleabane (Conyza bonariensis) in lucerne pastures
H. Wu and E. Koetz   pp. 211-214
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Control options for annual grass weeds in New Zealand high country pastures
Katherine Tozer, Catherine Cameron and Grant Edwards   pp. 215-218
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Silage for managing weed seeds
Rex Stanton, John Piltz, Craig Rodham and Hanwen Wu   pp. 219-221
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Finding needles in a haystack: an investigation of a non-destructive method to detect the seeds of Chilean needle grass (Nassella neesiana (Trin. & Rupr.) Barkworth) in round hay bales
Sandra Weller, Singarayer Florentine, Graeme Ambrose, Charles Grech and David McLaren   pp. 222-223
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Weed management in cropping systems

Herbicide cross resistance in Bromus diandrus and B. rigidus populations across south-eastern Australia
Peter Boutsalis, Christopher Preston and Gurjeet Gill   pp. 224-228
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The risks of resistance evolving to glyphosate in Australian non-agricultural weed management systems
Andrew Storrie, John Cameron and Mark Congreve   pp. 229-232
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Modelling the effectiveness of glyphosate resistance prevention strategies in Australian sub-tropical farming systems
David Thornby, Jeff Werth and Steve Walker   pp. 233-236
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Glyphosate resistance in barnyard grass (Echinochloa colona)
Hoan Nguyen Thai, Jenna Malone, Peter Boutsalis and Christopher Preston   pp. 237-240
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Weed species present in cereal crops in southern New South Wales
John C. Broster, Eric A. Koetz and Hanwen Wu   pp. 241-244
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Weed detecting technology: an excellent opportunity for advanced glyphosate resistance management
Tony Cook   pp. 245-247
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Strategic tillage reduces emergence of key sub-tropical weeds
Andrew R. McLean, Michael J. Widderick and Steven R. Walker   p. 248
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Local government's role in weed management

Yarra Ranges Council: creating partnerships that really work
Gaye Gadsden   pp. 249-251
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Local government is a vital cog in the weed management engine: lessons learnt in New South Wales
Stephen B. Johnson, Heather Apps, Paula Bosse, Doug Campbell, Ann Herbert, Geoff Hudson, Rosanna Luca, Reece Luxton, Megan Power, Terry Schmitzer and Wendy Thorsborne   pp. 252-255
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Occurrence of glyphosate resistant annual ryegrass (Lolium rigidum) on fence lines of South Australian cropping fields
Patricia Adu-Yeboah, Christopher Preston, Peter Boutsalis and Gurjeet Gill   pp. 256-258
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Eradication theory and practice

Rapid response to the discovery of olive hymenachne (Hymenachne amplexicaulis (Rudge) Nees) on Rinyirru (Lakefield) National Park
John R. Clarkson, A. (Tony) C. Grice and Lisa A. Still   pp. 259-262
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Overcoming weed eradication challenges in the Indian Ocean Territories
Jonathan Dodd and Andrew W. Reeves   pp. 263-266
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Designing a detection experiment: tricks and trade-offs
Cindy E. Hauser, Joslin L. Moore, Katherine M. Giljohann, Georgia E. Garrard and Michael A. McCarthy   pp. 267-272
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Does the tolerance of weeds to herbicide change with elevated levels of CO2?
Paul O. Downey, Tanya I. Lenz, William B. Sea, William Higgisson, Guillaume Lavier, P. Waryszak and Michelle R. Lieshman   pp. 273-274
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Weed management in cropping systems

Modelling the effects of ecology, management and genetics on the evolution of herbicide resistance with PERTH
Michael Renton, Ken Flower, Roberto Busi, David Thornby, Michael Airey, Sudheesh Manalil, Art Diggle and Stephen Powles   pp. 275-278
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Non-chemical options for managing the seed bank of glyphosate resistant weeds
Michael J. Widderick, Andrew R. McLean and Steven R. Walker   pp. 279-280
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Effects of stress on efficacy of pinoxaden on oats
Trevor Klein, Garth Wickson and Paul Chatfield   pp. 281-282
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Community involvement

Landscape sustainability through blackberry management: emerging roles for the Community-Led Approach and the Victorian Blackberry Taskforce?
Lyn Coulston, Michael Reid and Brian Furze   pp. 283-286
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Using a local management zoning framework to foster a management continuum. Is the 'big four' a defeatist mindset and are there alternatives at a local and regional level?
Travis Sydes   pp. 287-292
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Why don't they manage their weeds? 'Behaviour Change' research
Karen Alexander, Julie Thompson, Marianne Sawyer and Rosalie Cooper   pp. 293-294
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A Community Led Approach for the management of widespread pests in Victoria
Shane Herbertson   pp. 295-296
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Keynote

Messages and metaphors: is it time to end the 'war on weeds'?
John Dwyer   pp. 297-305
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Food security for a 9 billion population: more R&D for weed control will be critical
Rachel E.C. McFadyen   pp. 306-309
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CAWS Oration: Sustained control of plant invaders requires our sustained public outreach
Richard N. Mack   pp. 310-316
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Further development of the National Weed Risk Management Protocol
Bruce Auld, Stephen Johnson, Nigel Ainsworth, Sarah Brunel, Steve Csurhes, Paul Downey, Keith Ferdinands, Martin Hannan-Jones, Bertie Hennecke, Paul Keese, Darren Kriticos, David Low, Christine Munday, F. Dane Panetta, Andrea Robold, Samantha Setterfield, Jackie Steele, Karen Stewart and John Virtue   pp. 317-319
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Containment: the state of play
A.C. Grice, J.R. Clarkson, M.H. Friedel, H.T. Murphy, C.S. Fletcher and D.A. Westcott   pp. 320-324
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Genetic risk assessment to complement weed risk assessment in the selection and management of perennial species for agricultural systems in southern Australia
Christine Munday, Karen Bettink, Margaret Byrne and Lynley Stone   pp. 325-328
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The impact of emergence time on silverleaf nightshade (Solanum elaeagnifolium) development and growth
Xiaocheng Zhu, Hanwen Wu, Rex Stanton, Harsh Raman, Deirdre Lemerle and Geoffrey Burrows   pp. 329-332
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Classical biological control

Effects of pine oil, sugar and covers on germination of serrated tussock (Nassella trichotoma) and kangaroo grass (Themeda triandra) in a pot trial
David A. McLaren, Masha Fridman and Julio Bonilla   pp. 333-335
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The viability, pathogenicity and potential impact of the lantana rust Prospodium tuberculatum
Natasha Riding, Elizabeth L. Snow and Michael D. Day   pp. 336-338
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The release of Plectonycha correntina, a leaf feeding beetle for the biological control of Madeira vine
Elizabeth L. Snow, William A. Palmer and K.A.D. Wilmot Senaratne   pp. 339-342
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Variation in Septocyta ruborum and its potential for biological control of European blackberry
Robin J. Adair, Janita Baguant and Ann C. Lawrie   pp. 343-346
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Biological control agents are observed on Mimosa pigra six and 12 years after their release in the Northern Territory, Australia
Natasha Burrows and Bertrand Lukitsch   pp. 347-348
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The establishment of the clearwing moth for horehound control in South Australia
Susan Ivory   pp. 349-350
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Observations on the distribution of the spear thistle gall fly Urophora stylata and thistle receptacle weevil Rhinocyllus conicus in south eastern Australia
Tom Morley   pp. 351-352
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Attempts to establish the boneseed leaf buckle mite in Australia for the biological control of boneseed
Tom Morley, John Ireson and Susan Ivory   pp. 353-355
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Preliminary investigations of the Mimosa pigra dieback phenomenon
Aniline Sacdalan, Victor Galea, Ken Goulter, Louis Elliot and Rieks D. van Klinken   pp. 356-358
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Prioritising Victorian government investment into weed biocontrol
Greg Lefoe and Nigel Ainsworth   pp. 359-360
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Biological control of crofton weed on Lord Howe Island
Louise Morin, Ruth Aveyard and Sue Bower   p. 361
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Understanding weed distributions

A spatial and temporal explicit model to compare the effectiveness and cost of serrated tussock (Nassella trichotoma) management on public land
Ratnapriya Gajaweera, Jackie Steel, Franz Mahr, Rodney Jones, Charles Grech and Jean-Phillippe Aurambout   p. 362
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Weed R&D issues

Potential distribution of Chloris truncata (windmill grass) in relation to climate and soils
Pippa J. Michael, Paul B. Yeoh and John K. Scott   p. 363
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Mimosa pigra seed bank remains significant 10 years after stand removal: further investigation on a floodplain in northern Australia
Bertrand Lukitsch and Louis Elliott   pp. 364-366
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Emergence of four weed species in response to rainfall and temperature
Michelle Keenan and Jeff Werth   pp. 367-368
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Potential distribution of Rapistrum rugosum (turnip weed)
Pippa J. Michael, Paul B. Yeoh and John K. Scott   pp. 369-372
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Genetic variation in invasive populations of sea rocket (Cakile maritima) in southern coastal habitats of Australia
Sara Ohadi, Peter K. Ades, Roger D. Cousens and Rebecca Ford   pp. 373-374
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Sea spurge, Euphorbia paralias, ecological assessment and testing of potential biological control agents
John K. Scott, Mireille Jourdan, Louise Morin, Bruce L. Webber, Paul B. Yeoh, Susan K. Ebeling and Roger Cousens   p. 375
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Introduced stipoid grasses - biological control and identification

Biological control of Chilean needle grass (Nassella neesiana, Poaceae) in Australasia. Application to Release
Freda E. Anderson, Lucrecia Gallego, Ramon M. Sánchez, Jane Barton and David A. McLaren   pp. 376-377
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Investigations into micro-morphological discrimination of vegetative Mexican feather grass, Nassella tenuissima from serrated tussock, Nassella trichotoma and other stipoid species
Sylwia E. Solarska, David A. McLaren and Charles J. Grech   pp. 378-381
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