A-1 Molecular phylogeny of Phytophthora based on mitochondrial gene sequences. F.N. MARTIN (1) and P. Tooley (2). (1) USDA ARS, Salinas CA, and (2) USDA ARS, Ft. Detrick MD

A-2 Phytophthora polygoni causing leaf spot disease of Rumex dentatus in Nanjing, China. X.B. Zheng (1) and H.H. HO (2). (1) Nanjing Agricultural University, Nanjing, China, and (2) State University of New York, New Paltz

A-3 Problem-based learning for teaching introductory plant pathology. M. B. RILEY. Clemson University, Clemson, SC

A-4 Integrating morphological and molecular characterization of new species of Phytophthora: The case of P. glovera and P. bisheria. Z.G. ABAD and J.A. Abad. North Carolina State University Raleigh

A-5 Identification of the mitochondrial DNA haplotype of Phytophthora infestans in 19th century herbarium specimens. K.J. MAY, J.B. Ristaino, and G.P. Parra. North Carolina State University, Raleigh

A-6 Morphological and molecular characterization of P. bisheria sp. nov. from strawberries. Z.G. ABAD, J.A. Abad. and F.J. Louws. North Carolina State University, Raleigh

A-7 Precocious sporulation in Cercospora zeae-maydis. C.L. LAPAIRE and L.D. Dunkle. USDA ARS, Purdue University, West Lafayette IN

A-8 Phenotypic variability in Cercospora zeae-maydis. L.D. DUNKLE (1) and P.E. Lipps (2). (1) USDA ARS, Purdue University, West Lafayette IN, and (2) Ohio State University, Wooster

A-9 Segregation, aggressiveness, and sexuality in Phaeosphaeria nodorum. Q. Dai (1), E. Arseniuk (2), B.M. Cunfer (3), K. Cui (1) and P.P. UENG (1). (1) USDA ARS, Beltsville MD; (2) Plant Breeding & Acclimatization Institute, Radzikow, Poland; and (3) University of Georgia, Griffin

A-10 Morphological differences between sibling species of Cercospora zeae-maydis and C. sorghi. V.A. BREWSTER and M.L. Carson. USDA ARS, North Carolina State University, Raleigh

A-11 Characterization of Phytophthora phaseoli isolates collected on Delmarva. C.R. DAVIDSON, R.B. Carroll, T.A. Evans, R.P. Mulrooney, and M. Sedegui. University of Delaware, Newark

A-12 Identification and characterization of isolates of Phytophthora infestans using fatty acid methyl ester profiles. R.P. LARKIN and C.L. Groves. USDA ARS, Orono ME

A-13 Cloning of a DHN melanin gene coding for the second HN reductase from Ophiostoma floccosum. H.L. Wang, S.H. KIM, and C. Breuil. University of British Columbia, Vancouver, BC, Canada

A-14 Culture media effects on germination, appressorial formation, and sporulation of Colletotrichum acutatum. A. L. BEHM, M. L. Gleason, L. F. S. Leandro, and S. N. Wegulo. Iowa State University, Ames

A-15 Mating behavior of Magnaporthe grisea isolates causing gray leaf spot (blast) of perennial ryegrass turf. G. VIJI and W. Uddin. Pennsylvania State University, University Park

A-16 Response of potato to individual and combined inoculations with Verticillium dahliae and Pratylenchus penetrans. M. OMER (1), J. Moyseenko (1), A. MacGuidwin (2) and R. Rowe (1). (1) Ohio State University, Wooster, and (2) University of Wisconsin, Madison

A-17 Characterization of pectic enzymes of Colletotrichum gloeosporioides and C. acutatum. J. X. ZHANG (1), H.T. Dou (1), L.W. Timmer (2), and M.A. Ismail (1). (1) Florida Dept. of Citrus, Lake Alfred, and (2) University of Florida, Lake Alfred

A-18 Pectic zymogram analysis of fungal endophytes from tropical orchids of the N.W. of Western Australia. N. ABDUL KARIM (1), K. Sivasithamparam (1), and K. Dixon (2). (1) University of Western Australia, Crawley, WA, Australia, and (2) Kings Park Botanic Gardens & Park Authority, West Perth, WA, Australia

A-19 Mating compatibility within and between genetically distinct subgroups of Colletotrichum acutatum. J.C. GUERBER and J.C. Correll. University of Arkansas, Fayetteville

A-20 Genetic diversity within and between subgroups of Colletotrichum acutatum based on RFLP and sequence analysis of introns of the glutamine synthetase and glyceraldehyde phosphate dehydrogenase genes. B. LIU, J.C. Guerber, and J.C. Correll. University of Arkansas, Fayetteville

A-21 Infectivity and formation of oospores of Phytophthora infestans in the Toluca Valley, Mexico. S.P. Fernández-Pavía (1), N.J. GRÜNWALD (2), and W.E. Fry (2). (1) CEEM/PICTIPAPA, México, and (2) Cornell University, Ithaca NY

A-22 The mycovirus CHV1 disrupts development and protein secretion in Cryphonectria parasitica. P.M. McCABE and N.K. Van Alfen. University of California, Davis

A-23 Characterization of vesicle subsets in CHV1 infected C. parasitica. M. TURINA, P. M. McCabe, A. Prodi, and N. K. Van Alfen. University of California, Davis

A-24 Identification of cercosporin biosynthesis genes in Cercospora zeae-maydis. W.B. SHIM and L.D. Dunkle. USDA ARS, Purdue University, West Lafayette IN

A-25 Role of the hydrophobin cryparin in the biology of the ascomycete. P.K. KAZMIERCZAK (1), D.H. Kim (2), P. McCabe (1) and N.K. Van Alfen (1). (1) University of California, Davis, and (2) Chonbuk National University, Chonbuk, South Korea

A-26 Investigation and characterization of the Mn oxidizing factor from Gaeumannomyces graminis var. tritici. I.A. THOMPSON, D.M. Huber, and D.G. Schulze. Purdue University, Lafayette IN

A-27 Virulence assessment of Chalara elegans on bean leaves and colonization of host tissues. Z.K. PUNJA. Simon Fraser University, Burnaby, BC, Canada

A-28 NADPH does not overcome nitrate inhibition of aflatoxin biosynthesis. M.S. PRICE and G.A. Payne. North Carolina State University, Raleigh

A-29 Genetic diversity of Cercospora beticola in the U.S. and association of molecular markers with tolerance to the fungicide triphenyltin hydroxide. J.WEILAND (1,2), J. Eide (1), V. Rivera-Varas (2), and G. Secor (2). (1)USDA ARS, Fargo ND, and (2) North Dakota State University, Fargo

A-30 The role of melanin in the infection process of Venturia inaequalis. U. Steiner and E.-C. OERKE. University of Bonn, Bonn, Germany

A-31 Characterization of the rice blast pathogen in Egypt. J.C. CORRELL (1), M.R. Sehly (2), F.N Lee (1), T.W. Mew (3), E. Shreve (1), J.C. Guerber (1), Z. Osman (2), and S. Wahsh (2). (1) University of Arkansas, Fayetteville; (2) Rice Research Station, Giza, Egypt; and (3) International Rice Research Institute, Los Banos, Philippines

A-32 Rapid determination of Magnaporthe grisea pathogenicity towards rice. Y. JIA (1) and B. Valent (2). (1) USDA ARS, Stuttgart AR, and (2) DuPont, Wilmington DE

A-33 Evaluation of Erwinia amylovora strains in Turkey for resistance to streptomycin, oxytetracycline and copper. H. BASIM (1), S.B. Ozturk (1), A. Unlu (2), O. Yegen (1), and W. Zeller (3). (1) University of Akdeniz, Antalya,Turkey; (2) Citrus and Greenhouse Research Institute, Antalya, Turkey; and (3) Federal Biological Research Centre Institute for Biological Control, Darmstadt, Germany.

A-34 Nonfunctional tRNA gene in an unusual example of rRNA interoperon sequence heterogeneity in phytoplasma. R.E. DAVIS and E.L. Dally. USDA ARS, Beltsville MD

A-35 Rappini bacterial blight pathogen population declines in infested field soil, but persists in the rhizosphere of the replant crop. N.A. CINTAS (1), S.T. Koike (2), and C.T. Bull (1). (1) USDA ARS, Salinas CA, and (2) University of California, Salinas

A-36 Relative importance of bacteriocin-like genes in antagonism of T3 strains to T1 strains of Xanthomonas campestris pv. vesicatoria. A.P. HERT (1), S. Tudor (2), P.D. Roberts (1), G.V. Minsavage (2), and J.B. Jones (2). (1) University of Florida, Immokalee, and (2) University of Florida, Gainesville

A-37 Xylella fastidiosaare biofilm-forming phytopathogenic bacteria. L.L.R. MARQUES (1), G.P. Manfio (2), D.M. Reid (1), H. Ceri (1) and M.E. Olson (1). (1) University of Calgary, AB, Canada, and (2) Fundação André Tosello, Brazil

A-38 Group 16SrV phytoplasma in diseased alder trees (Alnus glutinosa) in Lithuania. D. VALIUNAS (1), A. Alminaite (1), R.E. Davis (2), J. Staniulis (1), and R. Jomantiene (1). (1) Institute of Botany, Vilnius, Lithuania, and (2) USDA ARS, Beltsville MD

A-39 Presence of tRNA^ala-tRNAile genes in the 16S-23S rDNA spacer sequence and two rrn operons of Xylella fastidiosa. J. CHEN (1), D. Banks (1), R.L. Jarret (2), and J.B. Jones (3). (1) Florida A&M University, Tallahassee; (2)USDA ARS, Griffin, GA; and (3) University of Florida, Gainsville

A-40 Parameters of Serratia marcescens transmission by the squash bug, Anasa tristis. B. BEXTINE (1), A. Wayadande (1), S. Pair (2), B. Bruton (2), F. Mitchell (3), and J. Fletcher (1). (1) Oklahoma State University, Stillwater; (2) USDA ARS, Lane OK; and (3) Texas A&M University, Stephenville

A-41 Yellow vine of cucurbits: Pathogenicity of Serratia marcescens and transmission by Anasa tristis. B. BRUTON (1), J. Brady (2), F. Mitchell (2), B. Bextine (3), A. Wayadande (3), S. Pair (1), J. Fletcher (3), and U. Melcher (3). (1) USDA ARS, Lane OK; (2) Texas A&M University, Stephenville; and (3) Oklahoma State University, Stillwater

A-42 Host range of Clavibacter michiganensis subsp. insidiosus. D.A. SAMAC. USDA ARS, University of Minnesota, St. Paul

A-43 Epidemiological aspects of citrus variegated chlorosis at Rio Grande do Sul State, Brazil. E.A. Rossetto and V. DUARTE. UFRGS, Porto Alegre, RS, Brazil

A-44 Genetic variability of Erwinia carotovora subsp. atroseptica and E. carotovora subsp. carovotovora associated to blackleg in potato fields at Rio Grande do Sul State, Brazil. A.M.R. Oliveira, M.G. Moraes, J.R.P. Silveira, T. Konrad, and V. DUARTE. UFRGS, Porto Alegre, RS, Brazil

A-45 Sequence analysis of a chromosomal fragment of severe strain of western aster yellows phytoplasma. J. RASCOE and M. Shaw. New Mexico Highlands University, Las Vegas

A-46 Effects of Terpene on growth of Xylella fastidiosa. C. J. CHANG (1), B. Zhang (1), and L. Franklin (2). (1) University Georgia, Griffin, and (2) Alpha Gamma Research Inc., Atlanta GA

A-47 Interactions between bacterial lipopolysaccharides and plant pectins. B. VENKATESH and K. Rudolph. Institut für Pflanzenpathologie und Pflanzenschutz der Universitat, Göttingen, Germany

A-48 Genetic diversity and occurrence of sweet potato begomoviruses. P. Lotrakul (1), R.A. VALVERDE (1), C.A. Clark (1), S. Hurtt (2), and M.W. Hoy (1). (1) Louisiana State University, Baton Rouge, and (2) Plant Germplasm Quarantine Unit, Beltsville MD

A-49 Phylogenetic analysis of Prunus necrotic ringspot virus and implications for development of a generalized typing assay. L. Han and R.W. HAMMOND. USDA ARS, Beltsville MD

A-50 Characterization of strawberry mottle virus and Strawberry mild yellow edge potexvirus isolates, and their detection in Fragaria spp. J.R. Thompson (1), C.D. Schoen (2), J.L. Lindner (2), and W. JELKMANN (1). (1) BAA, Dossenheim, Germany, and (2) PRI, Wageningen, Netherlands

A-51 Assessment of cryopreservation for Cucumber mosaic virus eradication in banana (Musa sp.) plantlets. B. Helliot (1), B. Panis (2), M.H. JIJAKLI (1), R. Swennen (2), and P. Lepoivre (1). (1) Gembloux Agricultural University, Gembloux, Belgium, and (2) Katholieke University Leuven, Heverlee, Belgium

A-52 Host range and PCR detection of Citrus Yellow Mosaic Virus. Q. HUANG and J.S. Hartung. USDA ARS, Beltsville MD

A-53 Development of an ELISA-based diagnostic test for Little cherry disease virus. J. Theilmann, R. Reade, J. Mozafari, S. Orban, and D. ROCHON. Agriculture and Agri-Food Canada, Summerland, BC, Canada

A-54 Host range and potential vectors of a Pennsylvania isolate of plum pox virus. V.D. DAMSTEEGT (1), A.L. Stone (1), F.E. Gildow (2), R. Welliver (3), L. Levy (4), and D.G. Luster (1). (1) USDA ARS, Fort Detrick MD; (2) Pennsylvania State University, University Park; (3) Pennsylvania Department of Agriculture, Harrisburg PA; and (4) USDA APHIS, Beltsville MD

A-55 Sequence analysis of PCR products from plum pox virus (PPV)-infected trees: Presence of more than one PPV isolate in an individual tree. J. HAMMOND (1), H. Puehringer (2), A. Da Camara Machado (2), and M. Laimer Da Camara Machado (2) USDA ARS, Beltsville MD, and (2) University of Agriculture, Vienna, Austria

A-56 First report of a spherical virus isolated from Calibrachoa plant. H.-Y. LIU (1), J.L. Sears (1), and R.H. Morrison (2). (1) USDA ARS, Salinas CA, and (2) Sakata Seed America, Inc., Salinas CA

A-57 Complete sequences of plum pox potyvirus isolates from Pennsylvania. V. MAVRODIEVA (1), L. Levy (1), D. Luster (2) and V. Damsteegt (2). (1) USDA APHIS, Beltsville MD, and (2) USDA ARS, Ft. Detrick MD

A-58 Characterization of Croton yellow vein mosaic virus family Geminiviridae. B. MANDAL (1), H. R. Pappu (1) and V. Muniyappa (2). (1) University of Georgia, Tifton, and (2) University of Agricultural Sciences, Bangalore, India

A-59 Second-site revertants in the capsid protein of Cucumber mosaic virus . A.W.E. FRANZ, C. Josefsson, G. Park, and K.L. Perry. Purdue University, West Lafayette IN

A-60 Age-related resistance in bell pepper to Cucumber mosaic virus. H. Garcia-Ruiz and J.F. MURPHY. Auburn University, Auburn AL

A-61 Development of a subgenomic promoter-driven Cucumber mosaic virus-based vector. Y. ZHAO, J. Hammond, and R. W. Hammond. USDA ARS, Beltsville MD

A-62 Engineered resistance to Raspberry bushy dwarf virus in red raspberry. R.R. MARTIN, K.E. Keller (1), and H. Mathews (2). (1) USDA ARS, Corvallis OR, and (2) Exelixis Plant Sciences, Portland OR

A-63 The genetics of virulence of maize streak Mastrevirus. R. EDEMA and D.T. Gordon. Ohio State University, Wooster

A-64 Molecular characterization of venezuelan isolates of poinsettia mosaic virus. M.A. Sanchez (1), L. Rubio (2), O. Carballo (1), M.L. Izaguirre (1), and E. MARYS (1). (1) IVIC, Caracas, Venezuela, and (2) IVIA, Valencia, Spain

A-65 Frequency and location of isolation of Seiridium sp. and Botryosphaeria sp. on leyland cypress in Tennessee. D.R. ASHBURN (1), W.E. Klingeman (2), A.S. Windham (3), C.H. Canaday (4), and M.T. Windham (5). University of Tennessee, Knoxville

A-66 Characterization of Xanthomonas axonopodis pv. citri from Florida and different world areas by BOX and ERIC PCR. J.CUBERO and J.H. Graham. University of Florida, Lake Alfred

A-67 Development of a PCR-based assay for detecting bacterial spot-causing xanthomonads on seed and on diseased tomato or pepper seedlings. D.A. CUPPELS and M. Cowan. Agriculture and Agri-Food Canada, London, ON

A-68 Natural infection of onion seed by Pantoea ananas, the causal agent of center rot disease. R.R. WALCOTT (1), A.C. Castro (1), R.D. Gitaitis (2), and H.F. Sanders Jr. (2). University of Georgia, Athens, and (2) CPES, Tifton GA

A-69 On-site one hour PCR diagnosis of bacterial diseases. N.W. SCHAAD, P. Gaush, E. Postnikova, and R. Frederick. USDA ARS, Fort Detrick MD

A-70 Rapid-cycling brassicas (Brassica rapaL.) for the study of black rot disease. C.J. CHANG and R. Donaldson. University Georgia, Griffin

A-71 Detection of Pseudomonas savastanoi pv. savastanoi from olive trees by membrane Bio-PCR. H. BASIM (1), E. Basim (2) and A. Ersoy (1). (1) University of Akdeniz, Antalya, Turkey, and (2) University of Suleyman Demirel, Isparta, Turkey

A-72 Isolation of Pseudomonas syringae pv. syringae from fenugreek seed. M.L. FOGG (1), R.A. Reedy (1), D.Y. Kobayashi (1), S.A. Johnston (1), and W.L. Kline (2). (1) Rutgers University, New Brunswick NJ, and (2) Rutgers Cooperative Extension, Millville NJ

A-73 Specificity of PCR and ELISA assays for hypovirulent and avirulent Clavibacter michiganensis subsp. michiganensis. W.S. KANESHIRO and A.M. Alvarez. University of Hawaii, Honolulu

A-74 Sampling of combine debris for conducting preliminary regional surveys to detect the presence of Tilletia horrida and T. indica. G.L. PETERSON (1) and K.L. Kosta (2). (1) USDA ARS, Fort Detrick MD, and (2) California Dept. of Food and Agriculture, Sacramento

A-75 Quantitative detection of Trichoderma hamatum 382 by real-time PCR. L. Cotxarrera (1), M. LEWIS IVEY (2), H.A.J. Hoitink (2) and S.A. Miller (2). (1) Universitat de Barcelona, Barcelona, Spain and (2) Ohio State University, Wooster

A-76 Field growth and yield of corn plants from Fusarium verticillioides-infected seed. I. YATES (1), N. Widstrom (2), C. Bacon (1), A. Glenn (1), D. Hinton (1), D. Sparks (3),W. Smart (3), and A. Jaworski (3). (1) USDA ARS, Athens, GA; (2) USDA ARS, Tifton GA; and (3) University of Georgia, Athens

A-77 Relative recovery of fungi involved in the seedling disease complex on cotton across Alabama. A. J. PALMATEER, K. S. McLean, and G. Morgan-Jones. Auburn University, Auburn AL

A-78 Pathogenicity of species of Exserohilum, Bipolaris, and Curvularia from johnsongrass, yellow foxtail, and broadleaf signalgrass on animal-waste application sites. R.G. PRATT. USDA ARS, Mississippi State MS

A-79 Detection of latent Botrytis allii (syn. B. aclada) infections in onion bulbs. M.I. CHILVERS (1), J.J. Dennis (2) F.S. Hay (1), C.R. Wilson (1), and D.A. Metcalf (3). (1) University of Tasmania, Burnie, TAS, Australia (2) Field Fresh Tasmania, TAS, Australia (3) DPIWE, Newtown, TAS, Australia

A-80 Characterization of a Corynespora sp. causing leaf spot of cucumber in green house cultivation in Korea. M.K. Kwon, B.R. Kang, K.C. Kim, and Y.C. KIM. Chonnam National University, Kwangju, Korea

A-81 Management of Pythium root rot in tobacco greenhouses. W.A. GUTIERREZ and T. A. Melton. North Carolina State University, Raleigh

A-82 Aphanomyces euteiches races associated with alfalfa in the midwestern U.S. D.K. MALVICK (1) and C.R. Grau (2). (1) University of Illinois, Urbana, and (2) University of Wisconsin, Madison

A-83 Comparison of two methods for estimating scabby kernels in Fusarium-infected spring wheat. R. DILL-MACKY (1), R.W. Stack (2), and J.V. Wiersma (3). (1) University of Minnesota, St Paul; (2) North Dakota State University, Fargo; and (3) University of Minnesota, Crookston

A-84 Occurrence of stem canker on soybeans in South Dakota. T.E. CHASE and C. Tande. South Dakota State University, Brookings

A-85 Changing composition of Phytophthora sojae races in Minnesota Soils. J.E. KURLE and E.M. El Araby. University of Minnesota, St. Paul

A-86 Occurrence of aflatoxins, fumonisins and the producing fungi in rice (Oryza sativa). H.K. ABBAS (1), R.M. Zablotowicz (1), R.D. Cartwright (2), W. Xie (3), and W.T. Shier (3). (1) USDA ARS, Stoneville MS; (2) University of Arkansas, Little Rock; and (3) University of Minnesota, St. Paul

A-87 A comparison of wounding and nonwounding inoculation techniques on aflatoxin contamination of corn in the field. G. L. WINDHAM and W. P. Williams. USDA ARS, Mississippi State MS

A-88 Reaction of Ptr ToxA-insensitive mutants to Pyrenophora tritici-repentis race 2. T.L. FRIESEN, J.B. Rasmussen, S. Ali, and L.J. Francl. North Dakota State University, Fargo

A-89 Recombinant inbred population of wheat that segregates for tan spot susceptibility. T.L. FRIESEN, J.B. Rasmussen, S. Ali, and L.J. Francl. North Dakota State University, Fargo

A-90 An efficient method for field inoculation of soybean sudden death syndrome caused by Fusarium solani f.sp. glycines. X.B. YANG, P. Lundeen, and M. Uphoff. Iowa State University, Ames

A-91 Field interactions of sudden death syndrome and soybean cyst nematode on near-isogenic soybean lines. T.A. JACKSON, T.L. Niblack, G.S. Smith. University of Missouri, Columbia

A-92 Relationship of seed exudates to pythium resistance in soybean. R. Nanayakkara, G.D. BATES, D.E. Longer, C.S. Rothrock, and J.C. Rupe. University of Arkansas, Fayetteville

A-93 Relative susceptibility of upland cotton cultivars and breeding lines to charcoal rot. T.A. TURINI (1), E.T. Natwick (1) and C.G. Cook (2). (1) University of California, Holtville, and (2) Syngenta Seeds, Victoria TX

A-94 RAPD characterization of Botryosphaeria species with Diplodia anamorphs. D.R. SMITH and G.R. Stanosz. University of Wisconsin, Madison

A-95 Rhizomorph generation by three Armillaria spp. under high O2 availability and saturation. J.D. MIHAIL (1), J.N. Bruhn (1), and T.D. Leininger (2). (1) University of Missouri, Columbia, and 2) Forest Service Southern Hardwoods Lab., Stoneville MS

A-96 Purification of a quinone reductase from the brown rot fungus Gloeophyllum trabeum. W. QI and J. Jellison. University of Maine, Orono

A-97 Ceratocystis species causing deep stain in Canadian softwood logs. P. LOPPNAU (1), C. Morin (2), S. H. Kim (1), C. Breuil (1), and L. Bernier (2). (1) University of British Columbia, Vancouver, BC, Canada, and (2) University of Laval, Quebec, QC, Canada

A-98 First report of pink disease on Eucalyptus and Podocarpus in South Africa. J. ROUX (1), R.N. Heath (1), A. van der Hoef (2) and M.J. Wingfield (1). (1) University of Pretoria, Pretoria, South Africa, and (2) Safcol Research, Sabie, South Africa

A-99 Mycosphaerella species causing Mycosphaerella leaf blotch on Eucalyptus species in South Africa. G.C. HUNTER (1), J. Roux (1), T.A. Coutinho (1), P.W. Crous (2), B.D. Wingfield (1) and M.J. Wingfield (1). (1) University of Pretoria, Pretoria, South Africa, and (2) University of Stellenbosch, Matieland, South Africa

A-100 Ophiostomatoid fungi associated with diseased Schizolobium parahybum. M.M. GELDENHUIS, J. Roux, B.D. Wingfield, Z.W. de Beer, and M.J. Wingfield. University of Pretoria, Pretoria, South Africa

A-101 Ash yellows: A new disease of Fraxinus chinensis in Colombia. H.M. GRIFFITHS (1), E.R. Boa (2), and J.J. Filgueira (3). (1) Cornell University, Ithaca NY; (2) CABI Bioscience, Egham, Surrey, UK; and (3) Universidad Militar de Nueva Grenada, Santa Fe de Bogota, Colombia

A-102 Use of remote sensing and geographic information systems to study the epidemiology of oak wilt. K.S. CAMILLI and D.N. Appel. Texas A&M University, College Station

A-103 Potential use of elevated temperature to eradicate fungi in white oak wood. L.D. DWINELL. USDA Forest Service, Athens GA

A-104 Trench inserts improve trenches for long-term control of oak wilt. A.D. WILSON, D.G. Lester. USDA Forest Service, Stoneville MS

A-105 Satsuma disease survey of Alabama. K.S. MCLEAN, S.L. Burchett, E.J. Sikora, R.C. Ebel, and M. Nesbitt. Auburn University, Auburn AL

A-106 Isolation of Pythium spp. from overseeded bermudagrass and other warm-season grasses in Florida. C.M. STILES (1), L.E. Datnoff (2), and D.J. Mitchell (1). (1) University of Florida, Gainesville, and (2) Everglades Research and Education Center, Belle Glade FL

A-107 Diseases of water spinach (Ipomoea aquatica) in Ontario and California. R.F. CERKAUSKAS (1), S.T. Koike (2), and H.R. Azad (3). (1) Agriculture and Agri-Food Canada, Harrow, ON; (2) University of California, Salinas; and (3) University of California, Riverside

A-108 Effects of Tylenchorhynchus claytoni on creeping bentgrass. N. W. WALKER and D. L. Martin. Oklahoma State University, Stillwater

A-109 Efficient induction of bacterial soft rot using mineral oil. S.-H. Lee and J.-S. CHA. Chungbuk National University, Chungbuk, Korea

A-110 New resistance to plant viruses in pepper. B.B. REDDICK and L.F. Habera. University of Tennessee, Knoxville

A-111 Effects of "Seed" generation on yield and root quality of ‘Beauregard’ Sweetpotatoes. A.D. BRYAN, Z. Pesic-VanEsbroeck, J.R. Schultheis, K.V. Pecota, C. Averre, L. Hix, M.E. Daykin, and G.C. Yencho. North Carolina State University, Raleigh

A-112 Characterization of Pythium species using AFLPs. C.D. GARZON, D.M. Geiser, and G.W. Moorman. Pennsylvania State University, University Park

A-113 Ralstonia solanacearum race 3, biovar 2 isolated from geranium in Wisconsin. L. WILLIAMSON, K. Nakaho, C. Allen, and B. Hudelson. University of Wisconsin, Madison

A-114 Characteristics of hyphoderma gummosis of lemon trees in California. L.J. MARAIS (1), N.V. O’Connell (2), J.A. Menge (1), J.E. Adaskaveg (1) and N. Sakovich (3). (1) University of California, Riverside; (2) University of California, Tulare City, and (3) University of California, Ventura

A-115 Survey of stem and leaf diseases in Maine lowbush blueberry fields (1999-2000). S.L. ANNIS and C.S. Stubbs. University of Maine, Orono

A-116 Use of rep-PCR fingerprinting to compare populations of Erwinia from ornamentals with those found in irrigation and stormwater runoff. D.J. NORMAN, J.M.F. Yuen, L. Reich, and R. Resendiz. University of Florida, Apopka

A-117 Influence of month of inoculation on development of cankers caused by Phytophthora spp. on almond. G.T. BROWNE (1) and M. Viveros (2). (1) USDA ARS, University of California, Davis, and (2) University of California, Bakersfield

A-118 Causal agent and development of bacterial soft rot on Hosta following cold storage. K.W. PARDA, J.L. Williams-Woodward, and R.R. Walcott. University of Georgia, Athens

A-119 Effect of silicon and chlorothalonil on suppression of gray leaf spot in St. Augustinegrass. M.O. BRECHT (1), L.E. Datnoff (2), T.A. Kucharek (1), and R.T. Nagata (2). (1) University of Florida, Gainesville, and (2) Everglades Research and Education Center, Belle Glade FL

A-120 Effects of late-season hardening and fertility on control of Phytophthora root rot in a woody perennial. H.M. Mathers and N.T. TUTTLE. Ohio State University, Columbus

A-121 Relative susceptibility of cucurbit and solanaceous crops to Phytophthora blight. G.J. HOLMES (1), M.E. Lancaster (2), R.J. Rodriguez (3) and R.S. Redman (3). (1) North Carolina State University, Raleigh; (2) North Carolina Coop. Ext. Service, Henderson Co.; and (3) Western Fisheries Research Center, USGS, Seattle

A-122 Reproduction of reniform nematode and protease inhibitor concentration in pineapple roots. C. Kelly, B.S. SIPES, and R.E. Paull. University of Hawaii, Honolulu

A-123 Use of calcium oxalate to reduce green mold in the cultivated mushroom, Agaricus bisporus. M.G. ANDERSON, D.M. Beyer, and P.J. Wuest. Pennsylvania State University, University Park

A-124 Evaluation of Puccinia lagenophorae as a biocontrol agent for Senecio madagascariensis in Hawaii. E.M. Killgore (1), M. Ramadan (1), and D.E. GARDNER (2). (1) Hawaii Dept. of Agriculture, Honolulu, and (2) University of Hawaii, Honolulu

A-125 Comparison of six isolates of Peronospora tabacina for ability to produce putative resting structures. E.P. HEIST, W.C. Nesmith and C.L. Schardl. University of Kentucky, Lexington

A-126 Importance of Eutypa lata and occurrence of other Diatrypaceous fungi in northern California vineyards. F.P. TROUILLAS, P.E. Rolshausen, and W.D. Gubler. University of California, Davis

A-127 Characterization of Phytophthora infestans collected in Maine, 1999-2000. C.L. GROVES and E.R. Champaco. USDA ARS, Orono ME

A-128 Effects of altered rainfall patterns on Puccinia dioicae infecting goldenrod. S.P. DENDY (1), B.M. Broeckelman (1), K.A. Garrett (1), P.A. Fay (1), and H.M. Alexander (2). (1) Kansas State University, Manhattan, and (2) University of Kansas, Lawrence

A-129 Biological control of cogongrass (Imperata cylindrica) with fungal pathogens. C.B. YANDOC and R. Charudattan. University of Florida, Gainesville

A-130 Epidemiological components related to fitness contribute to the host specificity of Phytophthora infestans populations in Brazil. N. D. Suassuna, L.A. Maffia, and E.S.G. MIZUBUTI. University Federal de Viçosa, Brazil

A-131 Fungi associated with water hyacinth (Eichhornia crassipes) in South Africa. A. DEN BREEYEN. ARC-PPRI, Stellenbosch, South Africa

A-132 Development of bacterial leaf spot of lettuce and dynamics of Xanthomonas campestris pv. vitians in relation to weather conditions. V. TOUSSAINT (1,2), C.E. Morris (3), T.C. Paulitz (1,4), and O. Carisse (2). (1) McGill University, Ste. Anne de Bellevue, PQ, Canada; (2) Agriculture and Agri-Food Canada, St. Jean sur Richelieu, PQ, Canada; (3) INRA d’Avignon, France; and (4) USDA ARS, Pullman WA

A-133 Characteristics of drip-irrigated soils that may contribute to charcoal rot of melon in Arizona. C. NISCHWITZ, M.W. Olsen, S. Rasmussen, and R.J. Frye. University of Arizona, Tucson

A-134 Relative within-field distribution patterns of beet necrotic yellow vein virus and beet soilborne mosaic virus. F. WORKNEH, E. Villanueva, and C.M. Rush. Texas Agricultural Experiment Station, Bushland

A-135 Structural attributes of soil microbial communities associated with different potato cropping systems. R.P. LARKIN. USDA ARS, Orono ME

A-136 Prediction of stem rust infection severity in perennial ryegrass, based on overnight and post-sunrise degree-hours of moisture duration. W.F. PFENDER and S.G. Seguin. USDA ARS, Corvallis OR

A-137 Impact of accuracy and precision of site-specific estimates of weather data in the midwestern USA on simulated performance of disease-warning systems. S.N. WEGULO, M.L. Gleason, K.-S. Kim, S.E. Taylor, and K.J. Koehler. Iowa State University, Ames

A-138 Symptom production in roots of hydroponic pepper inoculated with various Pythium isolates. T.N. OWEN-GOING, J.C. Sutton, H. Yu, and B. Grodzinski. University of Guelph, Guelph, ON, Canada

A-139 Further insight into the causal agent(s) of upright dieback of cranberry. N.J. CATLIN and F.L. Caruso. University of Massachusetts, East Wareham

A-140 Incidence and association between two spatially aggregated foliar diseases of cucumber in North Carolina. S.M. EL-ALLAF and T.B.Sutton. North Carolina State University, Raleigh

A-141 Inference about diversity estimates: Confidence intervals and statistical comparisons. K.A. GARRETT. Kansas State University, Manhattan

A-142 Genetic diversity of streptomycete populations associated with two prairie soil plots. S.D. LEE, L.L. Kinkel and D.A. Samac. University of Minnesota, St. Paul

A-143 Spatial patterns of antibiotic inhibition and resistance among Streptomycetes from prairie soils. A.L. DAVELOS, L.L. Kinkel, and D.A. Samac. University of Minnesota, St. Paul

A-144 The economic potential of silicon for sustainable rice production. J. Alvarez and L. DATNOFF. University of Florida, Belle Glade

A-145 Differences in the leaf colonization pattern of two bacterial species. S. SABARATNAM and G.A. Beattie. Iowa State University, Ames

A-146 Differential gene expression in dimorphism and pathogenesis in Ustilago maydis. M.D. GARCIA-PEDRAJAS, D.L. Andrews and S.E.Gold. University of Georgia, Athens

A-147 The role of protein phosphatase 2a in dimorphism, mating and pathogenicity in Ustilago maydis. J.D. EGAN and S.E. Gold. University of Georgia, Athens

A-148 Stylosanthes guianensis plants transformed with a rice chitinase gene confer resistance to Rhizoctonia foliar blight disease. S. KELEMU (1), H. Guixi (2), and G. Segura (1). (1) Centro Internacional de Agricultura Tropical, Cali, Colombia, and (2) Chinese Academy of Tropical Agricultural Sciences, Danzhou City, China

A-149 High throughput phenomics platform for genome-wide gene function. R. HEINIGER, C. Lo, M. Tanzer, A. Skalchunes, B. Darveaux, M. Giagnacova, S. Mahanty, G. Nelson, K. Peoples, K. Adachi, S. Frank, T. Dezwaan, M.V. Montenegro-Chamorro, W. Zhang, L. Hamer and J. Shuster. Paradigm Genetics, Inc., Research Triangle Park NC

A-150 Phage-display peptides that disrupt developmental progression of Phytophthora species. J.G. Laskey, S. Bishop-Hurley, S.A. MOUNTER, J.T. English, and F.J. Schmidt. University of Missouri, Columbia

A-151 Identification and characterization of genes responsible for dimorphism in Ustilago maydis. K.E. SNYDER, D.L. Andrews, M.D. García-Pedrajas, and S.E. Gold. University of Georgia, Athens

A-152 Chitinase and beta-1,3-glucanase expression patterns in soybeans with partial resistance to Phytophthora root rot. K. LUCE, J. English, and A. Karr. University of Missouri, Columbia

A-153 Resistance mechanisms in potato to Phytophthora infestans. A.B.R. PETERSON and R. Hammerschmidt. Michigan State University, East Lansing

A-154 Using ToRuG to dissect host responses to knot infection. J. SCHAFF, E. Scholl and D. Bird. North Carolina State University Raleigh

A-155 Corn stunt spiroplasma interaction with insects and plants. P. Geiss, W. Styer and S. HOGENHOUT. Ohio State University, Wooster

A-156 Measuring replication slippage frequencies in the avrBs2 gene of Xanthomonas campestris pv. vesicatoria. M.E. Hoyos and W. GASSMANN. University of Missouri, Columbia

A-157 Diversity of antibiotic inhibitory activity within Streptomycetes isolated from soil associated with native prairie plants. A.A. Wick (1), K.L. MOGEN (1), and L.L. Kinkel (2). (1) University of Wisconsin, River Falls, and (2) University of Minnesota, St. Paul

A-158 Spiroplasma citri adhesion related protein SARP1: Localization and conservation in S. citri strains and other spiroplasmas. M. BERG, A. Wayadande, B. Joshi, U. Melcher, and J. Fletcher. Oklahoma State University, Stillwater

A-159 Molecular analysis of Erwinia pyrifoliae isolated from Korea. S.J. Baek, D.H. Park, S.G. Choi, J.H. Hur, and C.K. LIM. Kangwon National University, Chunchon, Korea

A-160 The influence of plant genotype on the antagonistic activity of Pseudomonas fluorescens 2-79 to take-all and on changes in the composition of the rhizosphere specific microbial communities on wheat. H.G. Diab El-Arab and R.A. SIKORA. University of Bonn, Germany

A-161 Characterization by pulsed-field gel electrophoresis of Pseudomonas savastanoi pv. savastanoi strains western mediterrenean region of Turkey. E. BASIM (1) and H.Basim (2). (1) University of Suleyman Demirel, Isparta, Turkey, and (2) University of Akdeniz, Antalya, Turkey

A-162 Identification of Pseudomonas savastanoi pv. savastanoi, olive knot pathogen, by polymerase chain reaction. H. BASIM and A. Ersoy. University of Akdeniz, Antalya, Turkey.

A-163 DNA sequence and genetic analysis of the tabtoxin pathogenicity island of Pseudomonas syringae. T.G. Kinscherf (1) and D.K. WILLIS (2). (1) University of Wisconsin, Madison, and (2)USDA ARS, Madison WI

A-164 Characterization of Erwinia amylovora strains in Turkey by RAPD-PCR. A. UNLU (1) and H. Basim (2). (1) Citrus and Greenhouse Research Institute, Antalya, Turkey, and (2) University of Akdeniz, Antalya, Turkey

A-165 Evidence for a type III secretory pathway in the biocontrol bacterium Stenotrophomonas maltophilia strain C3. R.M. REEDY and D.Y. Kobayashi. Rutgers University, New Brunswick NJ

A-166 Cloning and mutational analysis of a gene, dctA, encoding a dicarboxylic acid transport protein from a biological control bacterium Pseudomonas chlororaphis O6. Y.C. KIM (1) and A.J. Anderson (2). (1) Chonnam National University, Kwangju, Korea, and (2) Utah State University, Logan

A-167 Sensor kinase GacS regulates production of quorum sensing factors, secondary metabolites, and root colonization in Pseudomonas chlororaphis O6. Y.C. Kim (1), K.Y. SEONG (1), and A.J. ANDERSON (2). (1) Chonnam National University, Kwangju, Korea, and (2) Utah State University, Logan

A-168 The involvement of nitric oxide radical in the hypersensitive reaction between tomato cells and Ralstonia solanacearum avirulent strain. H.F. NI (1) and D.D.S. Tzeng (2). (1) Chiayi Agricultural Experiment Station, Chiayi, Taiwan, ROC, and (2) National Chung Hsing University, Taichung, Taiwan, ROC

A-169 A xanthomonad pathogenic to Papaver somniferum under field conditions. N.W. SCHAAD and E. Postnikova. USDA ARS, Ft Detrick MD

A-170 Study of exopolysaccharides involvement in the interaction E. amylovora-serratine P. A. Cheggour, H.M. JIJAKLI, and P. Lepoivre. Gembloux Agricultural University, Gembloux, Belgium

A-171 Antifungal biocontrol activity of a streptomycetous rhizobacterium from tomato. S. SABARATNAM (1), A.N. Starratt (2), and J.A. Traquair (2). (1) Iowa State University, Ames, and (2) Agriculture and Agri-Food Canada, London, ON

A-172 Biocontrol of gray leaf spot (blast) of perennial ryegrass by Bacillus lentimorbus. G. VIJI and W. Uddin. Pennsylvania State University, University Park

A-173 Characterization of antagonistic rhizobacteria to control Meloidogyne incognita and Fusarium oxysporum on tomato. R. HAUSCHILD, F.M. Mwangi, B. Olzem, and R.A. Sikora. University Bonn, Bonn, Germany

A-174 Bioprotection and stimulation of aroids with phylloplane bacteria. A.M. ALVAREZ and C.Y. Mizumoto. University Hawaii, Honolulu

A-175 Isolation of bacteriophage of Agrobacterium tumefaciens from soil and surface water. C.G. EAYRE. USDA ARS, Fresno CA

A-176 Evaluation of allium products for the management of onion smut. C. Hoepting, T. Hsiang and M.R. MCDONALD. University of Guelph, Guelph, ON, Canada

A-177 Interrelationship of temperature, flower development, and biocontrol of fire blight of pome fruit. P.L. PUSEY. USDA ARS, Wenatchee WA

A-178 Evaluation of wheat cultivars for ability to induce microbe-mediate control of apple replant disease. Y. H. GU and M. Mazzola. USDA, Wenatchee WA

A-179 Influence of wheat cultivation on genetic composition of fluorescent pseudomonad populations from apple replant soils. Y. H. GU and M. Mazzola. USDA ARS, Wenatchee WA

A-180 Comparative analysis of three techniques for monitoring populations of introduced 2,4-diacetylphloroglucinol-producing pseudomonads in the rhizosphere of wheat. B.B. Landa (1), H. de Werd (1), B.B. McSpadden Gardener (1,2), and D.M. WELLER (1). (1) USDA ARS, Washington State University, Pullman, and (2) Ohio State University, Wooster

A-181 Pre- and post-harvest application of antagonistic yeasts for the control of grey and blue mold: efficacy and monitoring. D. De Clercq, C. Dickburt, P. Lepoivre, and M.H. JIJAKLI. Gembloux Agricultural University, Gembloux, Belgium

A-182 Differential biological control of Pythium aphanidermatum on bentgrass cultivars by microbial inoculants. M.A. KARP and E.B. Nelson. Cornell University, Ithaca NY

A-183 Development of a decision aid to optimize biocontrol of fire blight. K.B. JOHNSON, T.L. Sawyer and V.O. Stockwell. Oregon State University, Corvallis

A-184 An in situ, culture-independent approach to examine substrate competition of soil microorganisms for discovery biological control agents. B. YIN, J.A. Menge, E. Pond, and J. Borneman. University of California, Riverside

A-185 A DNA array approach for analysis of microbial communities using oligonucleotide fingerprinting of ribosomal RNA genes. L. VALINSKY (1), L. Scupham (1), G. Della Vedova (2), M. Chrobak (1), T. Jiang (1), A. Figueroa (1), J. Hartin (1), B. Yin (1), and J. Borneman (1). (1) University of California, Riverside, and (2) Universita degli Studi di Milano, Bicocca, Milano, Italy

A-186 Selection of an antibiotic deficient mutant of Pseudomonas fluorescens A506. T.N. TEMPLE (1), V.O. Stockwell (1), K.B. Johnson (1), and J.E. Loper (1,2). (1) Oregon State University, Corvallis, and (2) USDA ARS, Corvallis OR

A-187 Antimicrobial and alleopathic effect of 3-methylthiopropanoic acid produced by a PGPR strain 60-2G, Enterobacter intermedium. K.Y. SEONG, Y.C. Kim, B.H. Cho, K.Y. Kim, and K.H. Park. Chonnam National University, Gwangju, Chonnam, South Korea

A-188 Role of cytochrome c maturation genes in survival of Pseudomonas fluorescens in the citrus rhizosphere and biological control of Phytophthora parasitica. P.E. RICH, E. Glickmann, and D.A. Cooksey. University of California, Riverside

A-189 Antibacterial effect of essential oil produced by Rosa damascane on Xanthomonas axonopodis pv. vesicatoria. E. BASIM (1) and H. Basim (2). (1) University of Suleyman Demirel, Isparta, Turkey, and (2) University of Akdeniz, Antalya, Turkey

A-190 Leaf disk assay for the selection of biocontrol microorganisms for control of black pod on cacao. J.H. BOWERS (1), P.R. Tondje (2), K P. Hebbar (3), and R.D. Lumsden (1). (1) USDA ARS, Beltsville MD; (2) IRAD, Yaounde, Cameroon; and (3) M&M Mars, Inc., Beltsville MD

A-191 Valine excreting isolate of Pseudomonas syringae pv. tagetis exhibits enhanced virulence against houndstongue (Cynoglossum officinale). N.K. ZIDACK, K. Tiourabaev, A.L. Pilgeram, B.J. Jacobsen, and D.C. Sands. Montana State University, Bozeman

A-192 Evaluation of antibacterial activity of some plant oils against Agrobacterium tumefaciens. F.M. HASSANEIN and F.H. Abd El-Aziz. Plant Pathology Institute, Alexandria, Egypt

A-193 The effects of temperature and pH on the growth of Asian pear pathogen, Erwinia pyrifoliae. R. Shrestha, J.H. Hur, and C.K. LIM. Kangwon National University, Chunchon, Korea

A-194 Elicitation of ISR by a non-pathogenic phyllosphere-inhabiting bacterium. R.L. BARGABUS, N.K. Zidack, B.J. Jacobsen, and J.E. Sherwood. Montana State University, Bozeman

A-195 Activity of benomyl for control of postbloom fruit drop of citrus caused by Colletotrichum acutatum. N.A.R. PERES (1), N. L. Souza (1), S. Zitko (2) and L.W. Timmer (2). (1) Sao Paulo State University, Botucatu, SP, Brazil, (2) and University of Florida, Lake Alfred

A-196 Field efficacy of a commercial soil surfactant against Phytophthora root rot of citrus. C.J. MICKLER, J.E. Adaskaveg, and M.E. Stanghellini. University of California, Riverside

A-197 Sensitivity of Phytophthora phaseoli isolates to mefanoxam. J.D. DOMINIAK, T.A. Evans, R.P. Mulrooney, R.B. Carroll, and C.R. Davison. University of Delaware, Newark

A-198 Fungicide evaluation for the control of downy mildew on baby lima bean. J.D. Dominiak, R.P. MULROONEY, T.A. Evans, and R.B. Carroll. University of Delaware, Newark

A-199 Tiered system for fungicide discovery. J.A. FUGIEL (1), K. Lee (1), D.F. Heiman (1), P.D. Petracek (1), J.L. McGowen (2), L.M. Traphagen (2), U. Warrior (2), D.J. Burns (2), and P. Warrior (1). (1) Valent Biosciences Corporation, Long Grove IL, and (2) Abbott Laboratories, Abbott Park IL

A-200 The efficacy of prophylactic and curative applications of Iprovalicarb to control downy mildew of grapevine. C. BÜCHE (1), B. Huber (1), K. Löffel (1), G. Bleyer (1), M. Riemann (1), G. Hänßler (2), H. Merabet (2), I. Häuser-Hahn (2) and H.-H. Kassemeyer (1). (1) Staatl. Weinbauinstitut, Freiburg, Germany, and (2) Bayer AG, Leverkusen, Germany

A-201 Antiviral activity of chalcones against potato virus X. C.J. FRENCH (1) M. Bouthillier (1) M. Bernardy (1) and G.H.N.Towers (2). (1)Agriculture and Agri-Food Canada, Summerland, BC, and (2) University of British Columbia, Vancouver, BC, Canada

A-202 Crop profiles of pest management for U.S. agriculture: A searchable database on the World Wide Web. S.J. Toth (1), W.F. Burr (2), R.E. Stinner (1), and K.L. SMITH (2). (1) North Carolina State University, Raleigh, and (2) USDA ARS, Washington DC

A-203 Sensitivity and resistance of the Toluca Valley population of Phytophthora infestans to fungicides. N.J. GRÜNWALD (1,2), E. Garay Serrano (2), G. Romero Montes (2), G. Olaya (3), and W.E. Fry (1). (1) Cornell University, Ithaca, NY; (2) CEEM-PICTIPAPA, Conjunto Sedagro, Metepec, Mexico; and (3) Syngenta Crop Protection, Vero Beach FL

A-204 Reduced rates of fungicides for economic control of rice diseases in Arkansas. B.J. DODGEN, R.D. Cartwright, C.E. Parsons, F.N. Lee, E.A. Sutton, and W.J. Ross. University of Arkansas, Little Rock

A-205 Management of false smut disease of rice in Arkansas. C.E. PARSONS, R.D. Cartwright, F.N. Lee, B.J. Dodgen, E.A. Sutton, and W.J. Ross. University of Arkansas, Little Rock

A-206 Comparison of infected soybean seed and bean leaf beetles as inoculum sources for Bean pod mottle virus. J.L. Daniels, G.P. Munkvold, and D.C. MCGEE. Iowa State University, Ames

A-207 Potassium phosphite-Effective chemical tool in the protection of native flora threatened by Phytophthora cinnamomi. B.M. KOMOREK (1), K. Sivasithamparam (1) and B. Shearer (2). (1) University of Western Australia, Perth, WA, Australia, and (2) Dept. of Conservation and Land Management, Perth, WA, Australia

A-208 A comparison of airblast and Proptec rotary atomizer spray technologies. C.C. REILLY (1), K.C. Taylor (2) and M.W. Hotchkiss (1). (1) USDA ARS, Byron GA, and (2) University of Georgia, Byron

A-209 Seed-treatment for control of seedling death of pumpkin caused by Phytophthora capsici. M. BABADOOST and S.Z. Islam. University of Illinois, Urbana

A-210 Wet seed treatment with peroxyacetic acid for the control of bacterial fruit blotch of watermelon. D. HOPKINS (1), C. Thompson (1), J. Hilgren (2), and B. Lovic (3). (1) University of Florida, Apopka; (2) Ecolab Inc., St. Paul MN; and (3) Syngenta Seeds, Inc., Woodland CA

A-211 Reduction of bacterial spot of tomato with foliar applications of ammonium lignosulfonate and potassium phosphate. P.A. ABBASI, N. Soltani, D. Cuppels and G. Lazarovits. Agriculture and Agri-Food Canada, London, ON

A-212 Sensitivity to mefenoxam among isolates of Phytophthora cinnamomi and P. nicotianae from ornamental crops. C.-H. Duan and S.N. JEFFERS. Clemson University, Clemson SC

A-213 Developmental stage of Pythium aphanidermatum influences sensitivity to pyraclostrobin. M.A. KARP, E. Deibert, and E. Nelson. Cornell University, Ithaca NY

A-214 Ozone fumigation of stored grains: Does treatment affect grain quality? F. MENDEZ, D.E. Maier, L.J. Mason, and C.P. Woloshuk. Purdue University. West Lafayette IN

A-215 Identification of soybean sprout rot pathogens and their control with pesticides. H.N. Bae, C.K. Lim and J.H. Hur. Kangwon National University, Chunchon, Republic of Korea

A-216 Herbicidal effect of Plantpro 45 on germination of Portulaca oleracea. P.D. ADAMS and N. Kokalis-Burelle. USDA ARS, Ft. Pierce FL

A-217 Broadcast fumigation controls root-knot of flue-cured tobacco. B.A. FORTNUM and M. PULLEN. Clemson University, Florence SC

A-218 Characterization of potential host barriers to Uncinula necator in developing grape berries. A. FICKE (1), D.M. Gadoury (1), R.C. Seem (1), M.C. Goffinet (1) and I.B. Dry (2). (1) Cornell University, Geneva NY, and (2) CSIRO, Adelaide, SA, Australia

A-219 Phialophora gregata strains pathogenic to resistance allele sources Rbs1 and Rbs3. W. CHEN (1), B.W. Diers (2) and R.L. Nelson (3). (1) Illinois Natural History Survey, Champaign; (2) University of Illinois, Urbana; and (3) USDA ARS, Urbana IL

A-220 Competitiveness and aggressiveness of Xanthomonas axonopodis pv. vesicatoria strains with mutations in the avrBs2 locus. T. WANGSOMBOONSEE and D.F. Ritchie. North Carolina State University, Raleigh

A-221 A detached leaf assay to evaluate the resistance of banana to Mycosphaerella fijiensis. J. MERCIER, W.J. Howie, and P. Balint-Kurti. DNA Plant Technology, Oakland CA

A-222 Inheritance of Septoria tritici blotch resistance in wheat. C.A. MCCARTNEY, A.L. Brule-Babel, and L. Lamari. University of Manitoba, Winnipeg, MB, Canada

A-223 Combining ability of Fusarium head blight resistance from different spring wheat sources. R.W. STACK, R.C. Frohberg, J.M. Hammond, and J.M. Hansen. North Dakota State University, Fargo

A-224 Relative resistance of soybean lines to charcoal rot. S.R. STETINA (1), C.M. Vick (2), M.E. Schmidt (2), and J.S. Russin (2). (1) University of Minnesota, Lamberton, and (2) Southern Illinois University, Carbondale

A-225 Characterization of a corn embryo protein associated with resistance against Aspergillus flavus infection/aflatoxin production. Z.-Y. CHEN (1), R.L. Brown (2), K.E. Damann (1), and T.E. Cleveland (2). (1) Louisiana State University, Baton Rouge, and (2) USDA ARS, New Orleans LA

A-226 Inoculation studies and resistance screening for stem canker on soybean. C.E. GRAVERT (1), S. Li (1), and G.L. Hartman (1,2). (1) University of Illinois, Urbana, and (2) USDA- ARS, University of Illinois, Urbana

A-227 New bean germplasm lines with multiple genes for rust and mosaic resistance. M. PASTOR-CORRALES (1) and J.R. Stavely (2). (1) USDA ARS, Beltsville MD, and (2) Formerly USDA ARS, Beltsville MD

A-228 Development of a protocol for identifying alfalfa, Medicago sativa ssp. sativa reaction to infection by Phoma sclerotioides, causal organism of brown root rot. C.R. HOLLINGSWORTH, F.A. Gray, R.W. Groose, D.W. Koch and T.E. Heald. University of Wyoming, Laramie

A-229 Drought-tolerant maize as sources of resitance to aflatoxin production. K.M. TUBAJIKA and K.E. DAMANN. Louisiana State Agricultural Center, Baton Rouge

A-230 Using norsolorinic acid to screen for aflatoxin resistance in corn. S. A. Bates (1), S. R. Stetina (2), and J. S. RUSSIN (1). (1) Southern Illinois University, Carbondale, and (2) University of Minnesota, Lamberton

A-231 Effects of insect damage on Fusarium ear rot and fumonisin concentration in Bt and non-Bt corn hybrids. M.J. CLEMENTS (1), K.W. Campbell (2), D.G. White (1), C.M. Maragos (3), and C. Pilcher (2). (1) University of Illinois, Urbana; (2) Monsanto Inc., Monmouth IL; and (3) USDA ARS, Peoria IL

M-1 Linking into CMNs: The effects of position and host preference on ecto- and arbuscular mycorrhizal colonization of oak seedlings. A.E. LINDAHL, M. F. Allen, L.M. Egerton-Warburton, J.L. Lansing, and T. Tennant. University of California, Riverside

M-2 Preliminary studies on the spread of the Rust Fungus Puccinia glechomatis in North America. J. BOELLMANN and M. Scholler. Purdue University, West Lafayette IN

M-3 Nitrogen stable isotope ratios in sporocarps of ectomycorrhizal fungi: Influence of phylogenetic and environmental factors. S. A.TRUDELL (1), P.T. Rygiewicz (2), and R.L. Edmonds (1). (1) University of Washington, Seattle, and (2) US Environmental Protection Agency, Corvallis OR

M-4 Ectomycorrhizal fungal diversity in a native oak savannah: An initial view from below ground. P. VOTH, D.L. McLaughlin, and P.B. Reich. University of Minnesota, St. Paul

M-5 Comparison of ectomycorrhizae using RFLPs, hypogeous sporocarps and Cenococcum sclerotia in spruce-fir and northern hardwood forests on Roan Mountain, NC/TN. C.E. BIRD and S.C. McCleneghan. Appalachian State University, Boone NC

M-6 Use of random amplified polymorphic DNA markers to differentiate faba bean genotypes with resistance and susceptibility to Orobanche crenata. H.E. GUTIERREZ and J.O. Kuti. Texas A & M University, Kingsville

M-7 Species richness patterns in symbiotic gut fungi (Trichomycetes). M.J. CAFARO. University of Kansas, Lawrence

M-8 A preliminary report of freshwater ascomycetes from the Great Smoky Mountains National Park. H.A. RAJA and C.A. Shearer. University of Illinois, Urbana

M-9 Evaluation of food-grade dent corn and sweet corn hybrids for susceptibility to Fusarium ear rot and fumonisin production. C. KLEINSCHMIDT (1), J.K. Pataky (1), C.M. Maragos (2), and D.G. White (1). (1) University of Illinois, Urbana, and (2) USDA-ARS, Peoria IL

M-10 Where is the gate to the party?. L. LEBRON (1) , J.D. Lodge (2), S. Laureano (3), and P. Bayman (1). (1) University of Puerto Rico, San Juan, and (2) USDA Forest Service, Luquillo, PR

M-11 Microfungi on Musa acuminata from Mae Hong Son, Thailand. W. PHOTITA (1), S. Lumyong (1), P. Lumyong (2), E.H.C. McKenzie (3), and K.D. Hyde (4). (1) Chiang Mai University, Thailand; (2) Landcare Research, Auckland, New Zealand, and (3) The University of Hong Kong

M-12 Endophytic funci from Zingiberaceae: Alpinia malaccenses. B. BUSSABAN (1), S. Lumyong (1), P. Lumyong (1), E.H.C. McKenzie (2), and K.D. Hyde(3). (1) Chiang Mai University, Thailand, (2) Landcare Research, Auckland, New Zealand, and (3) The University of Hong Kong

M-13 Effects of dissolution of grass cuticle layers. P. WRIGHT. University of Western Australia, Perth, WA

M-14 Evolutionary relationships of Pterula and Deflexula within Agaricales sensu stricto and their relationships with the tricholomataceous attine fungi. A. MUNKACSI and D.J. McLaughlin. University of Minnesota, St. Paul

M-15 Phylogenetic evidence for the monophyly of particular entomogenous Cordyceps and the genus Polycephalomyces. J.F. BISCHOFF (1), R. Sullivan (1), J.F. White Jr., (1), and N.L. Hywel-Jones (2). (1) Rutgers University, New Brunswick NJ, and (2) National Centre for Genetic Engineering and Biotechnology, Rajhadevee, Bangkok, Thailand

M-16 A taxonomic investigation of the genus Mycena (Agaricales, Basidiomycota) in California. B.A. PERRY (1) and D.E. Desjardin (2). (1) Harvard University, Cambridge MA, and (2) San Francisco State University, San Francisco CA

M-17 Systematics of Septobasidium Pat. D.A. HENK and R. Vilgalys. Duke University, Durham NC

M-18 Electrophoretic studies of Fusarium species isolated from onion fields in Egypt. F. NEKOUEI (1), A. El-Zawahry (2), and J.O. Kuti (1). (1) Texas A&M University, Kingsville, and (2) Assiut University, Egypt

M-19 A preliminary study of Hydnellum (Thelephoraceae Basidiomycota) using morphological and pigment characteristics. S. WESTMORELAND and T.J. Volk. University of Wisconsin, La Crosse

M-20 Contrasting phylogeographic pattern in Florida endemic lichen fungus Cladonia perforata and its photobionts. R. YAHR (1) and P.T. Depriest (2). (1) Duke University, Durham NC, and (2) Smithsonian Institution, Washington DC

M-21 Cryphonectria cubensis represents a new genus comprised of three species. M. VENTER, M.J. Wingfield, and B.D. Wingfield. University of Pretoria, Pretoria, South Africa

M-22 Panmixia in the false-truffle Hymenogaster sublilacinus (Basidiomycota, Cortinariaceae) rejects the persistence hypothesis of conifer biogeography in the Great Basin. S. ALBEE-SCOTT and R. Fogel, University of Michigan, Ann Arbor

M-23 Detecting migration using multilocus genotypes and its effects on gene flow in populations of Rhizoctonia solani Kuhn AG-3 from potato in North Carolina. P.C. CERESINI (1), H.D. Shew (2), R. Vilgalys (3), U.L. Rosewich (4), and M. Cubeta (5). (1) UNESP, FEIS, Department Biologia, Ilha solteira, SP, Brazil; (2) North Carolina State University, Raleigh; (3), Duke University, Durham NC; (4) USDA ARS, St. Paul MN; and (5) North Carolina State University, Plymouth

M-24 Lentinus tigrinus is a circum-global species. E.A. GRAND, R.H. Petersen, and K.W. Hughes. University of Tennessee, Knoxville

M-25 Preliminary systematic and ecological observations of Rocky Mountain alpine species of Laccaria. T.W. OSMUNDSON and C.L. Cripps. Montana State University, Bozeman

M-26 Evolution of filamentous Ascomycetes inferred from multiple-gene-analyses. R. LINDEMUTH, N. Wirtz, I. Schmitt, and H.T. Lumbsch. Universitaet Essen, Germany

M-27 Biological species of Costa Rican collybioid agarics. J.L. MATA and R.H. Petersen. University of Tennessee, Knoxville

M-28 Phylogeny of biological species of Polyporus subg. Polyporellus. D. KRUEGER, K.W. Hughes, and R.H. Petersen. University of Tennessee, Knoxville

M-29 Population genetics of dogwood anthracnose fungus (Discula destructiva Redlin). N. ZHANG and M. Blackwell. Louisiana State University, Baton Rouge

M-30 Cloning and functional characterization of the Cla4 homologue in Magnaporthe grisea. L. Li and J.R. XU. Purdue University, West Lafayette IN

M-31 Adaptation in long-term cultures of Schizophyllum commune. T.A. CLARK and J.B. Anderson. University of Toronto, Canada

M-32 Characterization of an extracellular, cellulosome enclosed endoglucanase purified from Chaunopycnis spp. E.A. LEWIS, R. Sullivan, J.F. White Jr. Rutgers University, New Brunswick NJ

M-33 Antifungal activity of extracts from osage orange Maclura pomifera fruits. J.O. KUTI and H.B. Konuru. Texas A&M University, Kingsville

M-34 Physiology, zoospore behavior, and enzyme production of Batrachochytrium dendrobatidis, a chytrid pathogenic to amphibians. J.S. PIOTROWSKI, S.L. Annis, and J.E. Longcore. University of Maine, Orono

M-35 Arbuscular mycorrhizal fungal species composition, richness and abundance in the Phoenix metropolitan area. J.R. COUSINS, S.A. Whitcomb and J.C. Stutz. Arizona State University, Tempe

M-36 Ophiostomatoid fungi associated with Tetropium spp. (longhorn beetles) in Atlantic Canada. K. JACOBS (1), K.A. Seifert (1), K.A. Harrison (2), and T. Kirisits (3). (1) ECORC Agriculture Canada, Ottawa, Canada; (2) NRC Canadian Forest Service Fredericton, NB, Canada; and (3) Universitat fur Bodenkultur Wien, Vienna, Austria

M-37 A new identification key for the common Aspergllus species. M.A. Klich. USDA ARS, New Orleans LA

M-38 A new species of Ascomycetes from Mexico. M. C. Gonzalez (1), R.T. Hanlin (2), A.E. Glenn (2), and M. Ulloa (1). (1) Instituto de Biologia, UNSM, Mexico, and (2) University of Georgia, Athens

M-39 Carbon source-enhanced axenic growth of Cronartium quercuum f. sp. fusiforme. A.M. DINER, Southern Institute of Forest Genetics, Saucier MS

M-40 Analysis of differential gene expression in soybean roots in response to Fusarium solani infection by microarrays. M.J. IQBAL (1), T. Maguire (2), K. Meksem (1), S. Yegashi (1), V. Njiti (1), J. Shultz (1), P. Gresshoff (2), and D.A. Lightfoot (1). (1) Southern Illinois University, Carbondale, and (2) University of Queensland, Brisbane, Australia.

M-41 The integrated genetic and physical map of soybean: Toward a functional, high-density disease resistance gene map. M.J. IQBAL (1), K. Triqitayakorn (1), H.B. Zhang (2), J. Schultz (1), K. Meksem (1), and D.A. Lightfoot (1). (1) Southern Illinois University, Carbondale, and (2) Texas A&M University

M-42 Multiple evolutionary origins of Cordyceps (Clavicipitales) within the ascomycotina radiation: Evidence from 5.8S rDNA and ITS region sequence analysis. Y.Q. CHEN, N. Wang, H. Zhou, and L.H. Qu. Zhongshan University, Guangzhou, People’s Republic of China

M-43 Biosystematics of the myxomycete Badhamia gracilis. J. CLARK (1) and E.F. Haskins (2). (1) University of Kentucky, Lexington, and (2) University of Washington, Seattle

M-44 Clethra barbinervis in the Ericales forms arbuscular mycorrhizae. M. KUBOTA (1), T.P. McGonigle (2) and M. Hyakumachi (1). (1) Gifu University, Japan, and (2) Idaho State University

M-45 Determination of the anamorph of Cordyceps sinensis inferred from the analysis of the ribosomal DNA internal transcribed spacers and 5.8S rDNA. Y.Q.CHEN, L.H. Qu, and H. Zhou. Zhonshan University, Guangzhou, People’s Republic of China

M-46 Recycling of spent grains from beer and ethanol production into media for mushroom production. M. HARBIN and T. Volk. University of Wisconsin, La Crosse

M-47 An analysis of trehalose, glycerol and mannitol accumulation during heat and salt stress in a salt marsh isolate of Aureobasidium pullulans. A.P. TORZILLI (1) and J.R. Managbanag (2). (1) George Mason University, Fairfax VA, and (2) American Type Culture Collection, Manassas VA

M-48 rDNA and tef1-alpha DNA sequences resolve members within Trichoderma sect. Trichoderma. S.L. DODD and G.J. Samuels. USDA ARS, Beltsville MD

M-49 The transcription factor Ste12 homologue is not involved in appressorium formation in Magnaporthe grisea. G. PARK (1), J.R. Xu (1), and J.E. Hamer (2). (1) Purdue University, West Lafayette IN, and (2) Paradigm Genetics, Research Triangle Park NC

M-50 Ascomycetes from north temperate lakes and bogs in Wisconsin. P.M. FALLAH (1) and C.A. Shearer (2). (1) Environmental Microbiology Laboratory, Daly City CA, and (2) University of Illinois, Urbana

M-51 Biodiversity of saprobic fungi occurring on Proteaceae in the Cape Floral Kingdom of South Africa. S. LEE and P.W. Crous. University of Stellenbosch, South Africa

M-52 Effect of storage depth and fungal infection on viability and germinability of Sporobolus cryptandrus. J. HERRERA and S.A. Hayes. Truman State University, Kirksville MO

M-53 The gene for the determinant step in ergot alkaloid synthesis by Neotyphodium coenophialum and other grass endophytes. C.L. SCHARDL, C. Machado, and J. Wang. University of Kentucky, Lexington

M-54 A discussion of lesser-known and complex laboratory techniques for the efficient revival, propagation, and preservation of fungal cultures. A.N. PHILLIPS. American Type Culture Collection, Manassas VA

M-55 Phylogenetic relationships of Xylobolus and allied genera based on ITS1-5.8S-ITS2 sequences. H.S. JUNG and Y.W. Lim. Seoul National University, Korea

M-56 Using a Geographic Information System to characterize the distribution patterns of slime molds in Hawaii. A.R. Swanson and F.W. Spiegel. University of Arkansas, Fayetteville

S-1 Morphological and molecular taxonomy of Longidorus occurring in Arkansas. W. YE and R.T. Robbins. University of Arkansas, Fayetteville

S-2 A database management system for nematode taxonomists. W. YE and R.T. Robbins. University of Arkansas, Fayetteville

S-3 Distribution and control of Cytospora canker of cottonwood trees in Wyoming. E.E. EWART, F.A. Gray and K.L. Panter. University of Wyoming, Laramie

S-4 Functional analysis of a nematode induced cell cycle gene, cdc2a, through antisense and cosuppression. E. PLOVIE, E. Huyck, and G. Gheysen. Ghent University, Ghent, Belgium

S-5 Phylogenetic relationships of an undescribed species of Globodera from Portugal and two Punctodera species based on ribosomal DNA sequence data. A. SABO (1), L.G.L. Reis (2), E. Krall (3), M. Mundo-Ocampo (4), and V. R. Ferris (1). (1) Purdue University, West Lafayette IN; (2) Estação Agronómica Nacional, Portugal (3) Institute of Zoology and Botany, Tartu, Estonia; and (4) University of California, Riverside

S-6 Molecular barcodes for soil nematode identification. R.M. FLOYD, A. Papert, and M.L. Blaxter. University of Edinburgh, Edinburgh, Scotland

S-7 Analysis of genetic variation among isolates of Meloidogyne hapla. Q. LIU, C. Gleason, and V.M. Williamson. University of California, Davis

S-8 Effect of the rhg1 gene on life cycle of the soybean cyst nematode. Y. H. LI, S. Y. Chen, N. D. Young, and J. H. Orf. University of Minnesota, St. Paul

S-9 Characterization of inbred lines of Heterodera glycines. A. L. COLGROVE and T. L. Niblack. University of Missouri, Columbia

S-10 Changes in nematode community structure after the application of plant amendments. I.A. ZASADA and H. Ferris. University of California, Davis

S-11 New technologies for integrated management of the sugar beet nematode, Heterodera schachtii. H.J. SMITH, F.A. Gray, D.W. Koch, J.M. Krall, and L.J. Held. University of Wyoming, Laramie

S-12 Morphological and molecular characterization of a new Steinernema sp. from China. G.C. CUTLER (1), S.P. Stock (2), and J.M. Webster (1). (1) Simon Fraser University, Burnaby, BC, Canada, and (2), University of California, Davis

S-13 Identification of Meloidogyne incognita genes by differential display on infected roots. T. TYTGAT, I. Vercauteren, J. De Meutter, G. Gheysen and A. Coomans. Universiteit Gent, Gent, Belgium

S-14 Changes in lipid content of soybean cyst nematode juveniles. J.M. Wells, M.N. Lacouture, and P.M. TEFFT. St. Joseph’s University, Philadelphia PA

S-15 In situ characterization of an adipokinetic hormone-like gene in root-knot nematode. S. BEKAL and K. N. Lambert. University of Illinois, Urbana

S-16 Detection and isolation of a potential analog of the Mi gene from the peanut accession GKP 10602 (Arachis diogoi Hoehne) using degenerate primers. I.F. BENDEZU and J.L. Starr. Texas A&M University, College Station

S-17 Characterization of a mutant involved in Mi-1 -mediated resistance to root-knot nematodes in tomato. I. KALOSHIAN and O. Martinez de Ilarduya. University of California, Riverside

S-18 Field response of transgenic and non-transgenic cotton varieties to the reniform nematode. K.S. MCLEAN (1), G.W. Lawrence (2), W.S. Gazaway (1), A. J. Palmateer (1) and J. R. Akridge (1). (1) Auburn University, Auburn AL, and (2) Mississippi State University, Mississippi State

S-19 Effect of resistant soybean lines with PUSCN14 on populations of soybean cyst nematode. J. FAGHIHI (1), R.A. Vierling (2), V.R. Ferris (1) and J.M. Ferris (1). (1) Purdue University, West Lafayette IN, and (2) Purdue University, West Lafayette IN

S-20 Soybean yield and Heterodera glycines population dynamics in the midwestern U.S. and Ontario, Canada. N. ATIBALENTJA (1), G.R. Noel (2), P.A. Donald (3), H. Melakeberhan (4), T.R. Anderson (5), S. Chen (6), J. Faghihi (7), J.M. Ferris (7), C.R.Grau (8), D.E. Hershman (9), A.E. MacGuidwin (8), T.L. Niblack (3), R.D. Riggs (10), W.C. Stienstra (6), G. Tylka (11), and T. Welacky (5). (1) University of Illinois, Urbana; (2) USDA-ARS, Urbana IL; (3) University of Missouri, Columbia; (4) Michigan State University, East Lansing; (5) Agriculture and Agri-Food Canada, Harrow, ON; (6) University of Minnesota, Waseca; (7) Purdue University, West Lafayette IN; (8) University of Wisconsin, Madison; (9) University of Kentucky, Princeton; (10) University of Arkansas, Fayetteville; and (11) Iowa State University, Ames

S-21 Establishing a Prunus rootstock evaluation site on land with no history of short life or peach production. A.P. NYCZEPIR, W.R. Okie, and T.G. Beckman. USDA ARS, Byron GA

S-22 Hot water and ozone treatments of Easter lily for management of lesion nematode, Pratylenchus penetrans. D.D. GIRAUD (1), B.B. Westerdahl (2), L.J. Riddle (3), C.E. Anderson (2), and A. Pryor (4). (1) University of California, Eureka; (2) University of California, Davis; (3) Easter Lily Research Foundation, Brookings OR; and (4) SoilZone, Inc., Davis CA

S-23 Identification of nematode-antagonistic compounds from fungi. S.L.F. MEYER, J.K. Nitao, and D.J. Chitwood. USDA ARS, Beltsville, MD

S-24 Reduction of soil populations of soybean cyst nematode Heterodera glycines by crop rotation with non-hosts and varietal resistance. T.W. WELACKY (1), T.R. Anderson (1), and A.U. Tenuta (2). (1)Agriculture and Agri-Food Canada, Harrow, ON, and (2) Ontario Ministry of Agriculture, Food and Rural Affairs, Ridgetown College, Ridgetown, ON, Canada

S-25 Multiple cropping systems for nematode management. K.-H. WANG and R. McSorley. University of Florida, Gainesville

S-26 TerraPy, a plant health promoting agent with nematode control potential. J. HALLMANN (1), J. Mulawarman (1), D. Bell (2), B. Kopp-Holtwiesche (2), and R.A. Sikora (1). (1) Institut fur Pflanzenkrankheiten, Bonn, Germany, and (2) Cognis Deutschland GmbH, Henkelstrasse, Dusseldorf, Germany

S-27 Control of soybean cyst nematode Heterodera glycines with lime-stabilized municipal biosolids. T.W. WELACKY (1) and E. Topp (2). (1) Agriculture and Agri-Food Canada, Harrow, ON, and (2) Agriculture and Agri-Food Canada, London, ON

S-28 Cover crops for Rotylenchulus reniformis management on pineapple. K.-H. WANG, B.S. Sipes, and D.P. Schmitt. University of Hawaii, Honolulu

S-29 Soil texture and the efficacy of Steinernema riobrave against Diaprepes abbreviatus. L.W. DUNCAN, J.G. Genta, and J. Zellers. University of Florida, Lake Alfred

S-30 Timing application of Steinernema feltiae on tomato plants to suppress Meloidogyne incognita. E.E. PEREZ and E.E. Lewis. Virginia Polytechnic Institute and State University, Blacksburg

S-31 Differences in cotton yield, root growth, and Rotylenchulus reniformis following deep soil fumigation. A.F. ROBINSON (1), C.G. Cook (2), J.M. Bradford (1), A.C. Bridges (1), and J. Bautista (1). (1) USDA-ARS, College Station TX, and (2) Syngenta, Inc.

S-32 Evaluation of systemic and nonsystematic nematicides for the control of the root-knot nematode, Meloidogyne javanica. A. Farahat, S. AL-REHIAYANI, and M. Belal. King Saud University, Al-Qassim Branch, Saudi Arabia

S-33 Interaction between the reniform nematode and thrips on Mississippi cotton. W.O. PRICE, G.W. Lawrence, and J.T. Reed. Mississippi State University, Mississippi State

S-34 Effect of container on soybean cyst nematode race tests and indices on the differentials. R.D. RIGGS and L. Rakes. University of Arkansas, Fayetteville

S-35 Studies of the acquisition, retention, and transmission of tobraviruses by virus-vector (Para)Trichodorids. E. Karanastasi (1), S.A. MacFarlane (1), U. Wyss (2), and D.J.F. BROWN (1). (1) Scottish Crop Research Institute, Invergowrie, Dundee, Scotland, and (2) Kiel University, Kiel, Germany.

S-36 Abnormal males of Heterodera glycines from roots of resistant soybean cultivars. M. DAROCHA, T. Anderson and T. Welacky. Agriculture and Agri-Food Canada, Harrow, ON

S-37 Sporulation of Hirsutella minnesotensis growing from second-stage juveniles of Heterodera glycines. S.F. LIU and S.Y. Chen. University of Minnesota, Waseca

S-38 Reniform nematode reproduction on soybean in tests conducted in 2000. R.T. ROBBINS, L. Rake, L.E. Jackson, E.E. Gbur, and D.G. Dombek. University of Arkansas, Fayetteville

S-39 Nematodes associated with hop (Humulus lupulus L.) production in Tasmania. F. HAY (1), S. Pethybridge (1), G. Leggett (2), and L. Sherriff (2). (1) University of Tasmania, Burnie, TAS, Australia, and (2) Australian Hop Marketers, Hobart, TAS, Australia

S-40 TEM observations of root-knot nematode rectal gland cells and related tissues. D. Orion (1), W.P. WERGIN (2), C.A. Murphy (2), and D.J. Chitwood (2). (1) Volcani Center, Bet-Dagan, Israel, and (2) USDA ARS, Beltsville, MD

S-41 Online course in plant pathology. J.P. BOND (1), W.P. Bond (2), and E.O. Bond (2). (1) Southern Illinois University, Carbondale, and (2) Southeastern Louisiana University, Hammond