AWC proceedings:   previous

20th Australasian Weeds Conference (2016)

Pan Pacific Hotel, Perth, Western Australia.
11-15 September 2016.
Peer-reviewed proceedings edited by Rod Randall, Sandy Lloyd and Catherine Borger.
Published by Weeds Society of Western Australia
ISBN 978-0-646-96031-9

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Biosecurity

Do as I say, not as I do: benchmarking weed hygiene practices across NSW
Sonia Graham, Nick Gill, Rebecca Cross, Viveka Simpson and Eli Taylor   p. 1
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Do new weeds introduced from outside New Zealand still pose a threat to our farmers?
T.K. James, M.R. McNeill and P.D. Champion   p. 2
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Growing our biosecurity culture for property and landscape resilience
Belinda J. Callanan   p. 3
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Control of tropical soda apple: five years on
Reece Luxton, Rod Ensbey and Elissa van Oosterhout   p. 4
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Can a plant's cultural status and weed history provide a generalised weed risk score?
Roderick P. Randall   pp. 5-12
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Stevia ovata - not so sweet
Melissa J. Setter, Stephen D. Setter, Simon J. Brooks and Shane D. Campbell   pp. 13-16
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Many eyes on the prize: the role of citizen scientists in active weed surveillance
Melinda J. Laidlaw, Ailsa Holland and Gordon Guymer   pp. 17-19
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Introductions at what cost? Can insurance provide a new tool to manage weed incursions at the border?
Susie Hester and Paul Downey   p. 20
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Biological-based weed management, past successes and future opportunities
Andy W. Sheppard   p. 21
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Habitat and landscape associations of sea spurge (Euphorbia paralias L.) invasion of coastal dunes across NSW
Ben Gooden, Liam Kelly, Peter J. Turner and Kris French   p. 22
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Eradication in the tropics: constantly changing and adapting
Mick Jeffery and Simon Brooks   pp. 23-27
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Emerging environmental weed issues for Western Australia
Greg J. Keighery   p. 28
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Incorporating passive surveillance into management of weeds
Oscar Cacho and Susie Hester   p. 29
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Weed invasions and native plant extinctions: a six-threshold framework
Paul O. Downey and David M. Richardson   p. 30
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IWM non-chemical control methods

Long term impact of harvest weed seed destruction on annual ryegrass
Catherine P.D. Borger and Glen P. Riethmuller   pp. 31-35
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Use of cover crops as weed management tools in sugarcane fallow
Emilie F. Fillols and Timothy N. Staier   p. 36
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Annual ryegrass seed set reduced by desiccation and swathing of canola
Glen P. Riethmuller, Abul Hasham and Catherine P.D. Borger   p. 37
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Harvest weed seed control: the influence of harvester set up and speed on efficacy in south-eastern Australia wheat crops
John C. Broster, Michael J. Walsh and Allison J. Chambers   pp. 38-41
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IWM

Influence of annual ryegrass seed retention height on harvest weed seed control (HWSC) and harvest efficiency
Michael J. Walsh, John C. Broster, Charlotte Aves and Stephen B. Powles   pp. 42-45
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Narrow row spacing suppresses weeds more effectively than wide row spacing in mungbean
Bhagirath Singh Chauhan   p. 46
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The economics of tactical mechanical weed control in broadacre farming systems
James Hagan, Andrew Zull, Michael Widderick and Steven Davies   p. 47
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Field evaluation of Australian wheat genotypes for competitive traits and weed suppression
James M. Mwendwa, William B. Brown, Shamsul Haque, Graeme Heath, Hanwen Wu, Jane C. Quinn, Jeffrey D. Weidenhamer and Leslie A. Weston   pp. 48-53
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Metribuzin tolerance of wheat varieties
Harmohinder S. Dhammu, Mario F. D'Antuono and David F. Nicholson   p. 54
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WoNS and other weeds

Social factors influencing landholder management of silverleaf nightshade
Vaughan Higgins, Karen Herbert, Phillip Bowden, Hanwen Wu and Karl Behrendt   pp. 55-58
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Weed management priorities of lifestyle rural landholders
Nicholas Gill, Natalia Adan, Shaun McKiernan and Laurie Chisholm   p. 59
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A national program to improve awareness and adoption of best management practice for silverleaf nightshade control
Karen Herbert, Hanwen Wu, Phillip Bowden, Karl Behrendt and Vaughan Higgins   pp. 60-63
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Silverleaf nightshade (Solanum elaeagnifolium) - field research on biology and management in South Australia
John W. Heap   p. 64
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Integration of chemical control and burning practices for the management of gamba grass (Andropogon gayanus) in northern Australia
Rowena J. Eastick   pp. 65-68
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Weed management of legacy mine sites in the Northern Territory
Daniel L. McIntyre   pp. 69-71
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Weed control

Are root exudation or rainfall on treated plants likely causes of pasture damage after wiper application of herbicides?
Kerry C. Harrington, Hossein Ghanizadeh, Clyton Moyo, Peter D. Kemp and Han (J.P.J.) Eerens   pp. 72-75
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Management of emerging weeds in the western region: fleabane (Conyza bonariensis (L.) Cronquist) and sowthistle (Sonchus oleraceus L.)
Mohammad Amjad and Abul Hashem   p. 76
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Invasion curve

Unpacking the 'invasion curve': a discussion and workshop session
Hillary Cherry   p. 77
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Impact reduction and asset protection
Bruce A. Auld and Stephen B. Johnson   pp. 78-81
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Wattle we do about wattles?

An integrated view of the invasive Acacia longifolia (Andrews) Willd. in Portugal: from impacts to biocontrol
Elizabete Marchante, Fco. Alejandro Lopez-Nunez, Ruben Heleno, Helena Freitas, John Hoffmann and Helia Marchante   p. 82
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A matter of perspective: associations between Acacia and rhizobia across three spatial scales
Elizabeth M. Wandrag, Christina Birnbaum and Metha M. Klock   p. 83
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Do soil microbes drive Acacia species invasion in non-native ranges in Australia?
Christina Birnbaum   p. 84
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The ecology and determinants of successful invasion by a native Australian tree Acacia longifolia subsp. longifolia (sallow wattle) in south-eastern Australia
Samantha Barron, Singarayer Florentine, Nick Schultz, Per Milberg, Michael Tausz, Marie Keatley and Ryan Duffy   p. 85
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Sydney golden wattle (Acacia longifolia (Andrews) Willd.) on the south coast
John Moore   p. 86
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Temperature-induced variations in gas exchange and chlorophyll-a fluorescence of invasive Acacia mangium and two co-occurring tropical heath forest species (Dillenia suffruticosa and Buchanania arborescens) in Brunei Darussalam
Kushan U. Tennakoon, Quang-Vuong Le, M.H. Ibrahim, Faizah Metali and Rahayu S. Sukri   p. 87
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Herbicide resistance

Resistance to glyphosate found in feathertop Rhodes grass populations (Chloris virgata Sw.) in Australia
The D. Ngo, Peter Boutsalis, Christopher Preston and Gurjeet Gill   p. 88
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In vivo and in vitro application of a mutagen to induce herbicide resistance in Sri Lankan rice (Oryza sativa L.) varieties
Sachini I. Ekanayaka, Shyama R. Weerakoon, S. Somarathne, O.V.D.S.J. Weerasena and Tara D. Silva   pp. 89-92
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Investigation of herbicide resistance in Indian hedge mustard (Sisymbrium orientale L.)
Hue Thi Dang, Christopher Preston, Jenna Malone, Peter Boutsalis and Gurjeet Gill   p. 93
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Herbicide resistance management and tillage reforms in the rice-wheat cropping systems of South Asia
R.K. Malik, Virender Kumar and Andrew McDonald   p. 94
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What drives practice change? Influence, not information
Peter Newman, Lisa Mayer and Brogan Micallef   p. 95
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First case of glyphosate resistance in Tridax procumbens
Jingbo Li, Qin Yu and Stephen Powles   p. 96
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Herbicide metabolic resistance gene discovery in Lolium rigidum Gaudin using RNA-sequencing
Heping Han, Qin Yu, Susana Gonzalez, Roland Beffa and Stephen B. Powles   p. 97
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Pyroxasulfone (Sakura) resistance mechanism
R. Busi, A. Porri and S.B. Powles   p. 98
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Trifluralin resistance in Lolium rigidum Gaudin
Jinyi Chen, Qin Yu, Heping Han and Stephen Powles   p. 99
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Controlling patches of glyphosate-resistant weeds: is victory possible?
Tony Cook and Bhagirath S. Chauhan   pp. 100-104
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Antagonistic and synergistic effect of 2,4-D on herbicides of different sites of action in weed control
Jingbo Li, Heping Han, Qin Yu and Stephen Powles   p. 105
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It's time for new thinking about herbicide resistance
Andrew Storrie, Peter Boutsalis and John Broster   p. 106
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Investigation of glufosinate resistance mechanisms in Eleusine indica (L.) Gaertn.
Adam Jalaludin, Qin Yu, Roland Beffa and Stephen B. Powles   p. 107
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Survey of glyphosate resistance in common sowthistle (Sonchus oleraceus) across the Australian Northern Grains Region
Annie W. van der Meulen, Michael Widderick, Tony Cook, Bhagirath S. Chauhan and Kerry Bell   p. 108
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Understanding the mechanisms of triallate resistance in annual ryegrass
Mahima Krishnan, Peter Boutsalis and Christopher Preston   p. 109
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Mechanism and inheritance of resistance to clethodim in Lolium rigidum populations from Australia
Rupinder K. Saini, Jenna M. Malone, Gurjeet S. Gill and Christopher Preston   p. 110
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Keynote address

Pathogens for weed biological control: a solid past towards a rosy future?
Louise Morin   p. 111
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GWAC sessions

Why has resistance evolved more slowly to pre-emergent herbicides than to post-emergent herbicides?
Gayle J. Somerville, Stephen B. Powles, Michael Walsh and Michael Renton   p. 112
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Improving IWM practice of emerging weeds in the Western Region
Abul Hashem, Mohammad Amjad and Catherine Borger   p. 113
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Non-chemical tactics for improved control of key northern region weeds
Michael J. Widderick, Andrew R. McLean, Michelle D. Keenan and Bhagirath S. Chauhan   p. 114
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Application tech - apps and software

AgPest
Katherine N. Tozer, Colin Ferguson and Trevor K. James   pp. 115-117
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Search and destroy: a new tool in the war on weeds
Clayson J. Howell and Stu Cockburn   pp. 118-119
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ARM software for weed research management
Steven R. Gylling   p. 120
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MyWeedWatcher: mapping weeds in Western Australia
Tamrika Lanoiselet, Miriam Sanchez, Neil Steventon, Steve Collins, Scott Carmichael, Alex Bergin, Sandy G. Lloyd and David Hill   p. 121
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Weed seeds

Current perspectives on the impact of weed seed contamination in sheep
Jane E. Kelly, Jane C. Quinn, Panayiotis Loukopoulos, Sharon G. Nielsen, Paul Weston, John C. Broster and Leslie A. Weston   pp. 122-126
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Wind assisted dispersal of seeds not adapted for flight
Jillian K. Hetherington   p. 127
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Can herbicides affect seed dormancy and viability of flaxleaf fleabane (Conyza bonariensis (L.) Cronquist)
Hanwen Wu, Adam Shepherd, Md Asaduzzaman and John Broster   pp. 128-132
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Weed impacts

A stinking problem: novel control solutions and threat mitigation for invasive Passiflora foetida in the Kimberley and Pilbara
Bruce L. Webber, Paul B. Yeoh, Jana Z. Coletti, Raphael K. Didham, Vicki Long, David Pozzari, John Tomich, John K. Scott, Ruchira Somaweera, Tracy Sonneman and Stephen J. van Leeuwen   p. 133
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Recovery of the endangered rainforest herb Isoglossa eranthemoides following weed management in northeast New South Wales, Australia
Barbara Stewart and Annette McKinley   p. 134
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The landscape ecology of para grass (Urochloa mutica) on a monsoonal wetland of Kakadu National Park, NT Australia
James M. Boyden, Penny Wurm, Guy Boggs, Karen E. Joyce and Peter Bayliss   p. 135
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WoNS (mimosa, opuntoids, bitou bush and blackberry)

Pairing biological control species: cochineal insects Dactylopius (Hemiptera: Dactylopiidae) with prickly pears Opuntia (Cactaceae) within the South Australian Adelaide and Mount Lofty Ranges
Henry C. Rutherford   p. 136
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Improving the effectiveness of the release strategy for the array of Dactylopius tomentosus biotypes for the biocontrol of Cylindropuntia species by using DNA analysis
Peter K. Jones, Jane Oakey, Michael D. Day and Joseph S. Vitelli   pp. 137-140
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Eradication of wheel cactus from WA: setting priorities to achieve outcomes
Kay Bailey   p. 141
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Progress towards eradication of bitou bush, Chrysanthemoides monilifera subsp. rotundata in Western Australia
John K. Scott, Kathryn L. Batchelor and Bruce L. Webber   pp. 142-145
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Landscape transformations following blackberry decline in the south-west of Western Australia: successful restoration or back to blackberry?
Paul B. Yeoh, Lee Fontanini, Jenny A. Carley, Andy T. Russell, Kathy E. Dawson, John K. Scott, Caroline Y.M. Delaisse and Bruce L. Webber   pp. 146-151
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Genetics

Chloroplast genome of serrated tussock (Nassella trichotoma): structure and evolution
Aisuo Wang, Hanwen Wu and David Gopurenko   pp. 152-156
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Introduction of Paterson's curse (Echium plantagineum) to Australia - unravelling the story by DNA sequence analysis
Xiaocheng Zhu, David Gopurenko, Dominik Skoneczny, Brendan J. Lepschi, Mark A. Spencer, Geoff M. Gurr, Ragan M. Callaway, Miguel Serrano and Leslie A. Weston   pp. 157-161
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Herbicide effectiveness under elevated CO2
Paul O. Downey, Tanja I. Lenz, Pawel Waryszak and Michelle R. Leishman   p. 162
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Hawkweed - surveillance and sniffer dogs

Hawkweed (Hieracium spp.) surveillance: development of a targeted and robust plan for the Victorian Alps
Angela Constantine, Cindy E. Hauser, Keith Primrose and Neil Smith   p. 163
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It takes a village: detection dogs, partnerships and volunteers aid hawkweed eradication in mainland Australia
Hillary Cherry, Angela Constantine, Keith Primrose, Cindy Hauser and Kirsten Tasker   pp. 164-170
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Designing detection experiments: three more case studies
Cindy E. Hauser, John Weiss, Gurutzeta Guillera-Arroita, Michael A. McCarthy, Katherine M. Giljohann and Joslin L. Moore   pp. 171-178
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Early incursion management

Support tools for making better investment decisions about early invaders
Kate Blood and Bec James   pp. 179-182
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Dealing with 'new' alien plants: risk assessment and risk management
F. Dane Panetta   pp. 183-189
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Drones, UAVs and remote sensing

UAVs and machine learning for classification of Parkinsonia aculeata L., and planning for integration into weed management activities
Sam Atkinson, Joshua Kelcey, Harriet Davie and Susanna Beech   p. 190
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Unmanned helicopter system for miconia weed surveys
Torsten Merz, Stefan Hrabar, Farid Kendoul and Mick Jeffery   pp. 191-194
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Evaluating the Object-based Image Analysis (OBIA) approach for mapping African lovegrass (Eragrostis curvula (Schrad.) Nees) in the Bega Valley, NSW, Australia
Laurie A. Chisholm, Christopher J. Owers and Nicholas Gill   p. 195
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Using EO-1 Hyperion satellite hyperspectral imagery to detect the pasture weed Paterson's curse (Echium plantagineum L.) in southern Western Australia
Daniel L. McIntyre and Robert J. Corner   pp. 196-199
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Keynote addresses

A decade of weed surveys across south-eastern Australia - changes in herbicide resistance levels and identification of new cases of resistance
Peter Boutsalis, Christopher Preston and Gurjeet Gill   p. 200
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Breaking Bad - 10 years into a projected 30 year weed eradication program on World Heritage Listed Lord Howe Island
Susan M. Bower   pp. 201-208
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Weed potential and assessment

A risk-based approach for prioritising the threat of exotic weeds to Australia
Sandra Parsons, Alexander Brazenor and Bertie Hennecke   p. 209
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Introducing non-indigenous plants to the Western Australian rangelands - what can weed risk assessment contribute?
Christine Munday, Margaret Byrne, Geoff Moore and Clinton Revell   p. 210
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Weed risk assessment in countries with porous borders: a case study in Bhutan
Dorjee, Stephen B. Johnson, Anthony Buckmaster and Paul O. Downey   p. 211
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The weed potential of Erica species for Tasmania and other areas of southern Australia
Michael R. Noble   p. 212
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Innovative field nurseries to assess weed risk in the rangelands of Western Australia
Geoff A. Moore and Clinton Revell   pp. 213-217
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Weed surveying and mapping in urban and urban-fringe bushland: the Hobart experience
Adam Muyt   pp. 218-222
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Chilean needle grass (Nassella neesiana) control - the ACT experience
Steve Taylor, Jenny Conolly and Ani Gruber   pp. 223-227
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Mexican feather grass (Nassella tenuissima) control - the ACT experience
Jenny Conolly and Steve Taylor   pp. 228-231
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Determining hybrids between invasive and native Carpobrotus N.E.Br. species in South Australia: field, morphological and molecular insights
Michelle Waycott, Hellmut Toelken, Ed Biffin, Korjent Van Dijk, Chris Brodie, Jessica Burdon, Ainsley Calladine, Kat Ticli, Chelsea Tothill, Helen Vonow and Jürgen Kellermann   p. 232
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Biological control

Prospects for the biological control of Jatropha gossypiifolia: Stomphastis sp. as a potential agent from South America
Dianne B.J. Taylor and Kunjithapatham Dhileepan   pp. 233-236
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The Jatropha webber (Sciota divisella): a potential biological control agent for Jatropha gossypiifolia (bellyache bush) from India
Elizabeth L. Snow, Kunjithapatham Dhileepan and Dianne B.J. Taylor   pp. 237-240
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Host suitability testing of a gall forming fly Polymorphomyia basilica Snow (Diptera: Tephritidae), a potential biological control agent of Siam weed Chromolaena odorata (L.) R.M.King & H.Rob. (Asteraceae) in South Africa
Nontembeko Dube and Costas Zachariades   p. 241
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Biological control of parthenium weed: field collection and redistribution of established biological control agents
Jason T. Callander and Kunjithapatham Dhileepan   pp. 242-245
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Aquatic weeds

Silt, snags and snapping handbags - managing Cabomba caroliniana in the tropics of the Northern Territory
Thomas Price and Christopher Collins   pp. 246-249
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The need for innovation in aquatic weed management
Marcus R. Girvan   p. 250
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Cyperus rotundus L.: an ancient food staple but now designated the world's worst weed
John Dwyer   pp. 251-254
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Modelling

Using 'WeedSearch' to assess the feasibility of eradicating 34 high-risk invasive plant species in Queensland
Steve Csurhes   pp. 255-257
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Recreating the invasion of exotic conifers in New Zealand
Clayson J. Howell   pp. 258-262
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Green alien space invaders: adding the spatial dimension to weed population models
Michael Renton   p. 263
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Use of social media for sharing invasive species information

Use of social media for sharing invasive species information
Kate Blood   pp. 264-267
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Herbicides, adjuvants and additives

Paradigm™ Arylex™ Active, a new post-emergent, broadleaf herbicide for use in winter cereals
Peter Nott   p. 268
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Rinskor™ active - a new herbicide for rice weed control in Australia
Gregory S. Wells and Malcolm Taylor   pp. 269-271
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Rexade™ Arylex™ Active, a new post-emergence herbicide for control of grass and broadleaf weeds in wheat
Peter Nott   p. 272
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Increasing the efficiency of herbicides for management of dense infestations of wilding conifers
Carol A. Rolando, Stefan F. Gous, Robyn Gaskin and David Horgan   p. 273
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Biological control

Synergism between synthetic herbicides and Nigrospora oryzae (Berk. & Broome) Petch for the inundative biocontrol of pampas in New Zealand
Stanley E. Bellgard, Chantal M. Probst and Von W. Johnson   pp. 274-278
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Should we be concerned about rust-resistant biotypes of Hypericum androsaemum L. (tutsan) in south-eastern Australia?
Robin J. Adair, Huw Evans and Michaela Jones   pp. 279-282
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Is dieback in invasive plants due to a loss of protective microorganisms, or encounters with new pathogens?
Tracey V. Steinrucken, Andrew Bissett, Jeff R. Powell, Rieks D. van Klinken, Anil K.H. Raghavendra and Matteo Garbelotto   p. 283
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WoNS (rubbervine and parthenium)

Developing additional herbicide control options for rubber vine (Cryptostegia grandiflora R.Br.)
Shane D. Campbell and Dannielle A. Brazier   pp. 284-287
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Morpho-physiological responses of two Australian biotypes of parthenium weed (Parthenium hysterophorus L.) to soil moisture stress
Ali A. Bajwa, Bhagirath S. Chauhan and Steve W. Adkins   pp. 288-290
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Parasitic weeds

Eradication of red witchweed - it is never going to be easy!
Peter J. Austin, Daniel C. Stampa and Steve Csurhes   p. 291
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Operation witch hunt: conjuring eradication of the parasitic red witchweed plant with trickery and potions
Joseph S. Vitelli, Anna M. Williams, Natasha Riding, Annerose A. Chamberlain, Peter Austin and Dan Stampa   pp. 292-295
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Sterile holoparasite Cuscuta australis R.Br. (dodder) spread and its physiological impact on hosts in tropical Brunei Darussalam
Kushan U. Tennakoon, Quang-Vuong Le, Faizah H. Metali, Rusydinnah Buntar and Jay F. Bolin   p. 296
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Sucking the lifeblood out of major invasive weeds in Australia
Robert M. Cirocco, José M. Facelli and Jennifer R. Watling   p. 297
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Weeds on islands

One size does not fit all! Complex issues in managing the weed flora of the Torres Strait Islands
Barbara M. Waterhouse   p. 298
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Managing weeds for restoration of seabird habitat on Penguin Island, Western Australia
Kate Brown, Grazyna Paczkowska and Aurelie Labbe   p. 299
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Generating insight to underpin improved weed management and consequent protection of Aboriginal sites on the Burrup Peninsula
Vicki Long, Ben Fitzpatrick, David Pozzari, Bruce L. Webber, Paul B. Yeoh and Craig Bonney   p. 300
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Legislation and policy

Evaluating the implementation of declared pest policies - new ideas for enhancing public value
Michaela Heinson   pp. 301-303
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Marathon weed management: How can we effectively connect weed research with policy planning and on-ground action for long-term NRM results?
Keith B. Ferdinands, Samantha A. Setterfield and Jonathan Vea   pp. 304-307
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Relative effort calculation as a guide for regional weed investment
Scott A. Charlton   p. 308
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Why the polluter pays principle is not a policy panacea for weedy but commercially valuable plant species either
Stephen B. Johnson   pp. 309-312
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New and revised plant declarations in South Australia
David A. Cooke, Michaela A. Heinson and John G. Virtue   pp. 313-316
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Poster presentations

The risk of Acer pseudoplatanus (sycamore maple) to plant biodiversity in the Blue Mountains, New South Wales
Robin J. Adair, Huw Evans, Michaela Jones and Trish Kidd   p. 317
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Chemical and physical methods of controlling wild radish in lupins
Mohammad Amjad, Abul Hashem and Glen Riethmuller   p. 318
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Training and nudging weed practitioners towards better on-ground results
Kate Blood and Bec James   p. 319
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Assessing weed risk at the local scale
Kate Blood, F. Dane Panetta and Bec James   p. 320
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Increasing foliar herbicide options for controlling Clidemia hirta (L.) D.Don
Simon J. Brooks, Stephen D. Setter, Kirsty L. Gough and Melissa J. Setter   pp. 321-325
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Narrow row spacing suppresses weeds more effectively than wide row spacing in mungbean
Bhagirath Singh Chauhan   p. 326
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Oats tolerance to grass selective herbicides
Harmohinder S. Dhammu   p. 327
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Interaction of shallow seeding and herbicides in wheat
Harmohinder S. Dhammu   p. 328
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Arid land invasive weed Salvia verbenaca L. (wild sage): investigation into seedling emergence, soil seedbank, allelopathic effects, and germination
R.L. Fisher, S.K. Florentine and M.E. Westbrooke   pp. 329-331
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Metazachlor (Butisan TM Herbicide): new herbicide for the control of annual ryegrass (Lolium rigidum Gaud.) and other weeds in canola (Brassica napus L.) in Australia
Ian Francis and Marco Montagna   p. 332
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Evaluation of fitness cost associated with different EPSPS variants in Eleusine indica
Heping Han, Martin M. Vila-Aiub, Adam Jallalulin, Qin Yu and Stephen B. Powles   p. 333
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Emerging summer weeds are spreading far and wide within Western Australian Grainbelt - a GRDC Survey
Abul Hashem, Catherine Borger, Mohammad Amjad, Cameron Wild, Alex Douglas, Sally Peltzer, John Moore, Harmohinder Dhammu, Barbara Sage, Paul Bartlett, Mario D'Antuono and Greg Doncon   p. 334
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Can narrow row spacing in cotton reduce impact of weeds on crop yield?
Nadeem Iqbal, Steve Adkins and Bhagirath S. Chauhan   p. 335
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Performance of alternative herbicides to glyphosate on weeds in glyphosate-tolerant cotton
Nadeem Iqbal, Steve Adkins and Bhagirath S. Chauhan   p. 336
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Buffel grass (Cenchrus ciliaris L.), an early invader in Victoria
Bec James, Kate Blood and Ruth Raleigh   pp. 337-338
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Towards maximum utilization of the noxious root parasitic weeds, Striga spp.
Masaki Kuse, Reem Gaddal, Abdel Gabar Babiker and Yukihiro Sugimoto   p. 339
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Central Highlands Eden - Working along the invasive species curve continuum
Sally Lambourne and Mark Edmonds   p. 340
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Combination of Arylex (halauxifen-methyl) + fluroxypyr for broadleaf weed control in winter cereals and fallow
Christopher O. Love, Colin L. Plater, Michael D. Lines, Gregory S. Wells and Peter J. Nott   pp. 341-346
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Investigations into the effects of elevated carbon dioxide and drought on the growth and physiology of carpet weed (Galenia pubescens Eckl. & Zeyh.)
Ako H. Mahmood, Singarayer K. Florentine, Nimesha Fernando, Wendy Wright, Grant Palmer, David McLaren and Jim Sillitoe   pp. 347-350
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Factors affecting the germination ecology of turnip weed (Rapistrum rugosum) in the Northern Grain Region of Australia
Sudheesh Manalil and Bhagirath Singh Chauhan   p. 351
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Saflufenacil (Sharpen WG Herbicide): new crop topping herbicide for the control of seed set of wild radish (Raphanus raphanistrum L.) in wheat (Triticum aestivum L.)
Marco Montagna and Ian Francis   p. 352
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Metabolic profiling for benzoxazinoids in weed-suppressive and early vigour wheat genotypes
James M. Mwendwa, Paul A. Weston, Inge Fomsgaard, Bente B. Laursen, William B. Brown, Hanwen Wu, Greg Rebetzke, Jane C. Quinn and Leslie A. Weston   pp. 353-357
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Effects of the invasive grass Andropogon gayanus Kunth (gamba grass) on soil nitrogen dynamics and the soil microbial community
Natalie A. Rossiter-Rachor, Karen Gibb, Levente Bodrossy, Bronwyn Holmes, Damien McMaster and Samantha A. Setterfield   pp. 358-362
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Managing Mimosa pigra in Kakadu National Park: 30 years of flood, sweat and cheers
Samantha Setterfield, Damien McMaster, Calvin Murakami, Frederick Hunter, Buck Salau and Anthony Mann   p. 363
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Practicality of the suicidal germination approach for controlling Striga hermonthica (Delile) Benth.
Yukihiro Sugimoto, Hiroaki Samejima, Abdel Gabar Babiker, Hirosato Takikawa and Mitsuru Sasaki   p. 364
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Risks and impacts of environmental weeds to Vietnam's forests
Tuyet T.A. Truong, Margaret E. Andrew, Giles Hardy, Bernard Dell and Thu Q. Pham   p. 365
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Detoxication of acetochlor phytotoxicity for rice induced by 5-methoxypsoralen
Lifeng Wang, Lifeng Hu, Xiaomao Zhou, Qiong Peng, Zuren Li, Lianyang Bai and Chenzhong Jin   p. 366
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Aggregating weed data to improve on-ground outcomes for management: a case study in the Pilbara
Bruce L. Webber, Kathryn L. Batchelor, Stephen J. van Leeuwen and John K. Scott   p. 367
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The exceptional success achieved with biological control of Cylindropuntia fulgida (Engelm.) F.M.Knuth var. mamillata (Schott ex Engelm.) Backeberg using the cochineal, Dactylopius tomentosa Costa (Cholla biotype), in South Africa
Travor Xivuri, Helmuth Zimmermann, Hildegard Klein and Pierre van den Berg   p. 368
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Metabolic herbicide resistance gene discovery in wild oat
Qin Yu, Heping Han, Lianyang Bai and Stephen Powles   p. 369
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