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ABSTRACTS of the III International Weed Science Congress ABSTRACTS of the III International Weed Science Congress Foz do Iguassu, Brazil 6 ±11 June 2000 Published by the International Weed Science Society 107 Crop Science Building, Oregon State University Corvallis, Oregon, 97331-3002, U.S.A. ISBN 1-891276-16-6 The production of this program has been sponsored by Novartis. International Weed Science Society Ricardo Labrada President Jonathan Gressel Past President Stephen Duke Vice-President Carol Mallory-Smith Secretary-Treasurer Brazilian Weed Science Society Robinson A. Pitelli President Joao Baptista da Silva Vice-President Dionisio Gazziero Secretary Benedito N. Rodrigues Treasurer III International Weed Science Congress Organizing Committee JoaÄo Baptista da Silva Chairman Ricardo Labrada IWSS President Robinson A. Pitelli SBCPD President Jonathan Gressel International Scienti®c Committee Chairman James D. Riggleman International Finance Committee Chairman Geraldo N. Vilela Host Finance Committee Chairman Maria H. T. Mascarenhas Secretary Steve Duke USA Liaison D. L. P. Gazziero Social Programs Carol Mallory-Smith IWSS Secretary-Treasurer Anne LeÂgeÁre Abstract Editor Daniel Cloutier CD-ROM Producer E. Velini, L.L. Foloni, Jens Streibig Members III International Weed Science Congress SPONSORS* ACP American Cyanamid Aventis BASF Corporation Burch CNPq Dow AgroSciences DuPont Agricultural Products European Weed Research Society FAO FINEP FMC Grif®n Ihara Hokko Kumiai Milenia Monsanto Novartis SEPRO United Agri Products USDA-APHIS USDA-ARS Zeneca * List current as of 28 April 2000 III International Weed Science Congress FOREWORD The abstracts herein are those that were reviewed and accepted by April 5, 2000. It is likely that a few poster contributions were submitted after this date, and thus are not included in this book. Nearly all abstracts were submitted electronically. In spite of certain dif®culties, often related to Web access, more than 70% of the abstracts were submitted through the abstract submission site developed by Allen Press. All others were submitted via e-mail. Abstracts appear in this book according to the program order. Author and subject indexes are found at the end of the book. Both indexes use abstract numbers for referral. Given the number of abstracts submitted and the tight time frame to produce this book, it was impossible to conduct an in-depth review of the abstracts. The abstracts were edited for format and grammar only. However, in this process, I may have inadvertently introduced errors or am- biguities in some abstracts. If this is the case, please accept my most sincere apologies. Ideally, ®nal versions of abstracts should have been veri®ed by authors. Unfortunately, this was impossible, again because of the deadlines with which I had to operate. This collection of abstracts is the work of authors. It is also the work of session organizers and that of the Program Chair, Dr. Jonathan Gressel, who created a coherent and interesting program out of these hundreds of abstracts. But it is also results from the unique contribution of Jeremy Keeler, our site manager at Allen Press, and that of Patrick LeÂvesque in my lab. They both made this book possible and helped me keep that little panic feeling at bay, especially in the last stretches. To all, we owe our most sincere gratitude. This book speaks for itself. The interest in the Third International Weed Science Congress has been outstanding. More than 500 papers were submitted, from all reaches of the planet. Topics covered include nearly all aspects of Weed Science, as it is researched and practised daily, in the high-tech laboratories as well as in the ®elds of smallholder farmers. As I write this, I can foresee that this conference will bring unique opportunities for debate, exchange, and growth for all participants. My wish to each and everyone of you: Carpe diem! Anne LeÂgeÁre ABSTRACT EDITOR Agriculture and Agri-Food Canada Sainte-Foy, QC 5 April 2000 III International Weed Science Congress Main Topics, Sessions and Organizers PROGRAM CHAIR: Jonathan Gressel ALL CONGRESS LECTURES (2±6) Jonathan Gressel 1. WEED BIOLOGY, DYNAMICS AND ECOLOGY Frank Forcella 1.1. Invasion and colonization (7±13) John M. Randall 1.2. Management of seed banks (14±38) Frank Forcella 1.3. Ecophysiology of growth and competition (39±59) Susan Weaver 1.4. Weed dynamics: case studies (60±69) Martin Mortimer 1.5. Community interactions (70±83) Robert Gallagher 1.6. Ecosystem and community dynamics (84±98) Claudio Ghersa 1.7. Molecular/conventional systematics (89±108) Patrick Tranel 2. INTEGRATED WEED MANAGEMENT* Clarence Swanton 2.1. Crop rotation, tillage and intercropping (109±125) Micheal Owen 2.2. Alternative strategies for weed management (126±146) Clarence Swanton 2.W. Decision support systems for IWM (147±152) Deirdre Lemerle *Main Topic Sponsor: NOVARTIS 3. MODELLING PROBLEMS AND SOLUTIONS Martin Kropff 3.1. Modeling crop weed interactions (153±164) Martin Kropff 3.2. Modeling long-term dynamics of weeds (165±171) Cesar Fernandez-Quintanilla 3.3. Modeling herbicide resistance (172±175) Bruce Maxwell 3.4. Modeling spatial distribution/ management implications (176±180) Mark Paice 3.5. Modeling biocontrol effects (181±185) Margaret C. Smith 3.6. Fate of herbicides in the environment (186±194) Allan Walker 3.7. Modeling decision support (195±200) Antonio Berti 4. PHYSICAL CONTROL David Bowran 4.2. Physical impacts on weeds and crops (201±207) David Bowran 5. HERBICIDES* Ken Pallett and Steven Duke 5.1. New global developments (208±217) Les Glasgow 5.2. Natural products as herbicides (218±221) Stephen Duke 5.3. Selectivity (222±236) Hiroshi Matsumoto 5.4. Formulation and adjuvants (237±243) Chester L. Foy 5.5. Interactions (244±250) Jens Streibig 5.6. Mode of action/target sites (251±259) Ken Pallett 5.7. Systemic movement (260±265) Daniel Kleier 5.8. Herbicide dissipation (266±274) Peter BoÈger 5.W.1. After methyl bromide, What? (275±279) James Gilreath 5.W.2. Novel uses of herbicides (280±288) Robert Hoagland *Main Topic Sponsor: DUPONT III International Weed Science Congress 6. HERBICIDE RESISTANCE Dale Shaner and Steve Powles 6.1. New problems and new resistance mechanisms (289±303) Dale Shaner 6.2. Genetics and implications (304±313) Christopher Preston 6.3. Proactive and retroactive management (314±325) Steve Powles 6.4. Resistance risk analysis (326±330) Phil Westra 6.W./7.W. Resistant crops to manage resistant weeds (331) Malcolm Devine 7. HERBICIDE-RESISTANT CROPS Sam Howard and Michael Oelck 7.1. Development of HRC (332±337) Robert Morrison 7.2. Needs for HRC (338±341) Michael Oelck 7.3. New possibilities for cropping with HRC (342±348) Hans Ulrich Ammon 7.4. Introgressions of HRC with weeds (349±352) Carol Mallory-Smith 8. BIOCONTROL Louise Morin 8.1. Classical biocontrol (353±362) Louise Morin 8.2. Impact of classical biocontrol (363±369) John Hoffmann 8.3. Inundative biocontrol using pathogens (370±377) Bruce Auld 8.4. Promising developments in bioherbicide research (378±387) David Sands 8.W. Synergy/Interaction of biocontrol agents with other methods Paul C. Quimby (388±391) 9. LOW INPUT AGRICULTURE Charles R. Riches 9.1. IWM for smallholders (392±398) Charles R. Riches and Joel K. Ransom 9.2. IWM for minimizing dose (399±404) Jose Martin 9.W. Implications of universal adoption (405) Ken Davies 10. NOVEL TOOLS Helmut Walter and Karl Hurle 10.2. Novel tools for the laboratory (406±409) J. Christopher Hall 10.3. Novel tools for the ®eld (410±415) Helmut Walter 10.4. Novel tools for economic analyses (416±418) P. M. Schmitz 11. SITE SPECIFIC WEED MANAGEMENT David A. Mortensen 11.1. Spatial perspectives for integrated management (419±423) Lisa Rew 11.3. Enhancing in-®eld decision-making (424±427) Lori Wiles 12. GLOBAL MOVEMENT AND MANAGEMENT Randy Westbrooks and OF INVASIVE PLANTS* Robert Eplee 12.1. Modes of movement of invasive plants (428±435) Richard Mack 12.2. Quarantine and phytosanitation (436±440) Craig Walton 12.3. New approaches for management (441±446) Randy Westbrook 12.W. Geopolitics of limiting world movement of invasives (447±448) Peter Jenkins *Main Topic Sponsor: USDA-APHIS 13. GLOBAL AQUATIC WEED PROBLEMS R. Charudattan 13.1./.2. Weeds in waterways (449±461) R. Charudattan and R.A. Pitelli 13.3. Eco/Environmental issues with aquatics (462±469) Osvaldo A. Fernandez III International Weed Science Congress 14. COMMUNICATING WEED SCIENCE Steven A. Dewey 14.2. Educating farmers/managers/professionals (470±478) Steven Dewey 14.3. Communicating weed awareness in politicians/public (479±484) K. George Beck 15. SCIENCE OF ENVIRONMENTAL ISSUES Robert L. Zimdahl 15.1. Residue problems (485±497) Anis Rahman 15.2. Risks/bene®ts of herbicides/transgenics (498±504) Gerald R. Stephenson and John L. Hup- patz 15.W. Ethical dimensions (505±506) Robert L. Zimdahl 16. SPOTLIGHTS ON WEED PROBLEMS Ricardo Labrada IN GLOBAL CROPS 16.W.1. Spotlight: Rice (507±517) Albert Fischer 16.W.2. Spotlight: Soybean (518±526) Ribas Vidal 16.W.3. Spotlight: Agroforestry (527±528) Marcos Silveira Bernardes 17. SPOTLIGHTS ON GLOBAL WEEDS* Ricardo Labrada and L.G. Holm 17.W.1. Spotlight: Cyperus spp. (523±532) Jerry Doll 17.W.2. Spotlight: Amaranthus spp. (533±534) Stanislaw Gawronski 17.W.3. Spotlight: Sorghum spp. (535±537) Eduardo Leguizamon 17.W.4. Spotlight: Striga and Orobanche (538±547) Ricardo Labrada 17.W.5. Spotlight: Cynodon dactylon (548±552) Diego Gomez de Barreda * Main Topic Sponsor: FAO Third International Weed Science Congress Foz do IguassuÐ2000 From scarcity to security: a global perspective on weed science and the future food situation (2) TIMOTHY G. REEVES, KENNETH D. SAYRE, PETER R. HOBBS, JOEL K. RANSOM, DENNIS FREISEN, KELLY CASSADAY International Maize and Wheat Improvement Center (CIMMYT), Mexico; [email protected] Whether developing countries encounter food scarcity or food security over the next two decades will depend on many factors.
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