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Dr. Joseph C. Neal —
IXth International Bioherbicide Group Workshop

The IXth International Bioherbicide Group (IBG) Workshop on February 8, 2009, was conducted as a satellite conference of the Weed Science Society of America (WSSA) / Southern Weed Science Society (SWSS) joint meeting in Orlando, FL.   We hope that conducting this workshop in conjunction with the WSSA annual meeting facilitated the exchange of information among biological control researchers and “traditional” weed scientists; and fostered a greater understanding of the role biological control may play in weed management systems for agroecosystems and public lands.  The workshop was facilitated and supported by a conference grant from the US Department of Agriculture.

In addition to the volunteer presentations at the IBG workshop, a field tour of weed biocontrol sites Monday February 9th was organized by Dr. Jim Cuda of the University of Florida and the local Cooperative Extension staff. Tuesday February 10th the WSSA sponsored symposium:  "Plant Pathogens and Biological Control of Weeds: A Symposium in Honor of Dr. R. Charudattan" was a huge success.

Abstracts and Papers

Abstracts submitted through the WSSA on-line registration system are published in the on-line WSSA abstracts. Printed copies of the IBG Workshop Proceedings were distributed at the workshop. An pdf version of the proceedings is avaliable through this link.


Time Title and Authors
link to presentation Welcome and recognition of sponsors -- Graeme Bourdot and Joe Neal
9:00 Efficacy of biological control of grassy weeds using Curvularia eragrostidis in the field trials,  Y. Zhu, T. Gao, J. Wang, Y. Lu, S. Qiang*; Nanjing Agricultural University, Nanjing, China
9:15 Evaluation of bioherbicidal control of tropical signalgrass, Urochloa subquadripara,  Y. M. Shabana*, C. Stiles, R. Charudattan A. Abou Tabl,  J. White, University of Florida, Gainesville, FL, Valdosta State University, Valdosta, GA  USA
9:30 Screening fungal pathogens of Microstegium vimineum as potential biocontrol agents. L. C. Walker*, J. C. Neal, L. P. Tredway; North Carolina State University, Raleigh, NC  USA
9:45 The Model of Conidia Production in Helminthosporium spp., Biological Agents for Grassy Weeds Control. K. Yamaguchi*; Minami Kyushu University, Takanabe-cho, Japan
10 - 10:30 Discussion and Break
10:30 A search for a root-pathogen of Cirsium arvense in New Zealand G. W. Bourdot*  B. Skipp, G. Hurrell, D. Saville; AgResearch Limited, Christchurch, New Zealand, AgResearch Limited, Palmerston North, New Zealand, Saville Statistical Consulting Limited, Christchurch, New Zealand
10:45 Root Colonization and Environmental Fate of the Bioherbicide Pseudomonas fluorescens BRG100,  S. M. Boyetchko*, C. Hanson, R. K. Hynes, D. Korber; Agriculture and Agri-Food Canada, Saskatoon, SK, Canada, University of Saskatchewan, Saskatoon, SK, Canada
11:00 Herbicide- deleterious rhizobacterial interactions in Velvetleaf weed control.,  R. Zdor*; Andrews University, Berrien Springs, MI  USA
11:15 Using Gene Fusions to Study Cyanogenesis in a Weed Deleterious Rhizobacterium,  M. M. Biswas*, R. Zdor, C. Miller; Andrews University, Berrien Springs, MI  USA
11:30 Discussion
1:15 Evaluation of Alternaria alternata as a potential biocontrol agent for field bindweed (Convolvulus arvensis),   Ehsan Zeydali, Alireza Koocheki, Nader Azadbazht1, Mohammad H. Rashed and Reza Ghorbani*,  Lorestan Res. Inst. of Agric.& Natural Resources, Khoramabad, and Ferdowsi Univ. of Mashhad, Mashhad, Iran
1:30 Fungal toxins and other natural metabolites for management of parasitic weeds,  M. Vurro*, A. Boari; National Research Council, Bari, Italy
1:45 Pathogenic Mechanisms of Vulculic Acid Produced by Nimbya alternantherae, M. Xiang*, L. Fan, Z. Jiang, Y. Zeng; Zhongkai University of Agriculture and Engineering, Guangzhou, China, South China Agricultural University, Guangzhou, China
2:00 Surfactants affect the efficacy of Alternaria cassiae controlling sicklepod seedlings, R. A. Pitelli*, C. F. Franco, F. M. Claudia; University of  State of Sao Paulo, Jaboticabal, Brazil
2:15 Discussion and break
2:45 Potential of Cassida rubiginosa as a biological control agent for Cirsium arvense, Ghorbanali Assadi, Reza Ghorbani, Mohammad H. Rashed and Hossein Sadeghi; Ferdowsi Univ. of Mashhad, Mashhad, Iran
3:00 Native Phytopathogens as Biocontrol Agents:  Problems and Potential in the Management of Invasive Exotic Species, K. Jayachandran*, K. G. Shetty; Florida International University, Miami, FL  USA
3:15 Media Studies on Myrothecium roridum Tode (IMI 394934); a Potential Biocontrol Agent for Water Hyacinth, Okunowa Wahab Oluwanisola, G.O. Gbenle, A. A. Osuntoki, and A. A. Adekunle, University of Lagos, Nigeria
3:30 Bioherbicide development against water hyacinth: the story so far and the hopes for the future, R. W. Barreto*, D. J. Soares, E. M. Inokuti; Universidade Federal de Viçosa, Viçosa, MG, Brazil
3:45 Status of Phoma macrostoma, a bioherbicide for broadleaved weed control in turfgrass,   K. L. Bailey*, S. Falk, S. Lombardo; Agriculture & Agri-Food Canada, Saskatoon, SK, Canada, The Scotts Company, Marysville, OH  USA
4:00 Discussion
4:30 Business Meeting


A reception for IBG delegates was sponsored by Novozymes Biologicals, The Scotts Company and SePRO Corporation.