A-1 A differential medium for discriminating between Drechslera bromi and D. tritici-repentis. S. ALI and L. J. Francl. North Dakota State University, Fargo

A-2 AFLP analysis of Claviceps africana isolates causing sorghum ergot in the U.S. and other countries. P. W. Tooley (1), E. D. Goley (1), M. M. Carras (1), and N. R. O'Neill (2). (1) USDA ARS, Ft. Detrick MD, and (2) USDA ARS, Beltsville MD

A-3 Seed transmission and systemic infection by Fusarium subglutinans in maize. A.L. WILKE, C.R. Bronson, and G.P. Munkvold. Iowa State University, Ames

A-4 Vegetative compatibility groups of Fusarium oxysporum f. sp. cepae, the causal agent of Fusairum basal rot of onions, in Colorado . C.E. SWIFT (1), E. Wickliffe (2), and H.F. Schwartz (2). (1) Colorado State University, Grand Junction, and (2) Colorado State University, Fort Collins

A-5 Molecular variability in indian isolates of Fusarium oxysporum f. sp. ciceri. M.P. BARVE (1), D.K. Santra (1), V.C. Sanjay (1), M.P. Haware (2), P.K. Ranjekar (1) and V.S. Gupta (1). (1) Biochem. Sci. Div., Pune, India, and (2) ICRISAT Patancheru, Andhra Pradesh, India

A-6 Variability in Fusarium oxysporum isolates from sugar beet. L.E. HANSON, A. Hill, and L. Panella. USDA ARS, Fort Collins CO

A-7 Laccase production: a common feature in plant-associated Fusarium isolates. S.-.I KWON and A. Anderson. Utah State University, Logan

A-8 Host specialization and cryptic species within Ceratocystis fimbriata. C.J. BAKER (1), A.C. Alfenas (2), and T.C. Harrington (1). (1) Iowa State University, Ames, and (2) Universidade Federal de Vicosa, Vicosa, MG, Brazil

A-9 Double-stranded RNA analysis of Sirococcus isolates from butternut cankers. P. Spaine (1), S. McELREATH (2), and L. Jolley (2). (1) USDA Forest Service, Athens GA, and (2) Clemson University, Clemson SC

A-10 First report of Asperisporium on papaya in Hawaii. R.S. UCHIDA (1), J.Y. Uchida (1), D. Ogata (1), and N. Nagata (2). (1) University of Hawaii, Honolulu, and (2) University of Hawaii, Kahalui, Maui

A-11 Genetic diversity of Fusarium oxysporum f. sp. gladioli isolates based on PCR-amplified DNA fingerprint and ribosomal DNA sequence. R.S. CHEN. National Chiayi University, Chiayi, Taiwan, ROC

A-12 Pectolytic enzymes associated with virulence of Fusarium solani on muskmelon. J.X. ZHANG (1), B.D. Bruton (2), and C.L. Biles (3). (1) Florida Dept. of Citrus, Lake Alfred; (2) USDA ARS, Lane OK; and (3) East Central University, Ada OK

A-13 Genetic structure and population diversity in a North American collection of Monilinia vaccinii-corymbosi. L. WASILWA (1), P.V. Oudemans (1) and J.S. Lehman (2). (1) Rutgers University, Chatsworth NJ, and (2) Otterbein College, Westerville OH

A-14 Recovery of Didymella bryoniae from buried watermelon debris. A.P. KEINATH and V.B. DuBose. Clemson University, Charleston SC

A-15 The S strain of A. flavus in south Texas. P.J. COTTY, R. Jaime-Garcia, and K. Kobbeman. USDA ARS, New Orleans LA

A-16 Population structure of Botryosphaeria dothidea from pistachio and other hosts in California. Z. MA, E.W. A. Boehm, Y. Luo, and T.J. Michailides. University of California, Parlier

A-17 ITS sequence evidence for phylogenetic relationships among leaf rusts on grasses and cereals. M. Abbasi (1), S.B. GOODWIN (2), J.R. Cavaletto (2), and G.A. Hedjaroude (3). (1) Purdue University, West Lafayette IN; (2) USDA ARS, West Lafayette IN; and (3) Tehran University, Iran

A-18 Molecular variability of Phoma medicaginis var. medicaginis. C. CASTELL (1), and D. Samac (2). (1) University of Minnesota, St. Paul, and USDA, University of Minnesota, St Paul

A-19 Evidence for early colonization of grape buds by Uncinula necator. M.R. Rademacher, J. RUMBOLZ, and W.D. Gubler. University of California, Davis

A-20 Early development of Uncinula necator under field conditions. A. Rügner (1), J. RUMBOLZ (2), H.H. Kassemeyer (1), B. Huber (1), G. Bleyer (1), U. Gisi (3), and R. Guggenheim (4). (1) Staatl. Weinbauinstitut, Freiburg, Germany; (2) University California, Davis CA; (3) Syngenta Crop Protection, Stein, Switzerland, (4) University Basel, Basel, Switzerland

A-21 Comparison of North and South American populations of Gibberella zeae. J.I. VARGAS, R.L. Bowden, K.A. Zeller, and J.F. Leslie. Kansas State University, Manhattan

A-22 Changes in population structure of Monilinia fructicola over the course of a single growing season using microsatellite primers. E.W.A. BOEHM, Z. Ma, Y. Luo, and T.J. Michailides. University of California, Parlier

A-23 The complex Tox1 locus of Cochliobolus heterostrophus. S. E. BAKER (1), L. Shi (1), B-Y Li (1), X. Wang (1), O. Yoder (1), G.Turgeon (1,2). (1) Torrey Mesa Research Institute, San Diego CA, and (2) Cornell University, Ithaca NY

A-24 Simultaneous mapping of multiple vic loci in Gibberella fujikuroi MP-A (Fusarium verticillioides). K.A. Zeller (1) J.E. Jurgenson (2) and J.F. LESLIE (1). (1) Kansas State University, Manhattan, and (2) University of Northern Iowa, Cedar Falls

A-25 Distribution and regulation of fusaric acid production in the genus Fusarium. G.A. KULDAU (1), N. Zitomer (1), and C.W. Bacon (2). (1) Pennsylvania State University, University Park, and (2) USDA ARS, Athens GA

A-26 Fusarium verticillioides conidiation, spore germination, and the impact on seedling infection. A.E. GLENN (1), D.M. Hinton (2), and C.W. Bacon (2). (1) University of Georgia, Athens, and (2) USDA ARS, Athens GA

A-27 Pheromone derived peptides from Ustilago hordei competitively inhibit the native activity of the enzyme farnesyltransferase. P. KOSTED and J. Sherwood. Montana State University, Bozeman

A-28 Detection of mycoviruses in Fusarium solani f. sp. glycenes. R.A. MARVELLI (1), D.M. Eastburn (1), and L. Domier (2). (1) University of Illinois, Urbana, and (2) USDA ARS, Urbana, IL

A-29 Population structure of Fusarium oxysporum in tomato production in Florida. J. BAO (1), D. Fravel (1), G. Lazarovits (2), D. Chellemi (3), P. van Berkum (1) and N. O’Neill (1). (1) USDA ARS, Beltsville MD; (2) Agriculture and Agri-Food Canada, London, ON; and (3) USDA ARS, Ft. Pierce FL

A-30 Shot hole disease of 'awa Piper methysticum in Hawaii. J.J. OOKA. University of Hawaii, Kapaa

A-31 Antifungal activity of monoterpenes against Fusarium oxysporum . P. Meleo, D. J. Trently, and K.D. GWINN. University Tennessee, Knoxville

A-32 No correlation between Fusarium head blight in wheat and DON production by cultures of Fusarium graminearum. R.W. STACK, C.E. Wolf-Hall, H.H. Casper and J.M. Hansen. North Dakota State University, Fargo

A-33 The effect of relative humidity on the lesion expansion, sporulation and germination efficiency of Uncinula necator. C. REA and W.D. Gubler. University of California, Davis

A-34 Characterization of a fabavirus isolated from diseased lisianthus. C.C. Chen (1), C.C. Hu (2), and H.T. HSU (3). (1) Taichung District Agricultural Improvement Station, Taiwan; (2) National Chung-Hsing University, Taiwan; and (3) USDA, Beltsville MD

A-35 Complementation for transmission by non-vector whiteflies among tomato-infecting criniviruses. W.M. WINTERMANTEL and A.A. Cortez. USDA ARS, Salinas CA

A-36 Characterization and genome organization of four viruses infecting geranium and their assignment to a new provisional genus in the Tombusviridae family. G. Kinard, M.A. Guaragna, and R. JORDAN. USDA ARS, Beltsville MD

A-37 An SDS gel method for counting protein cysteine residues. L.C. LANE. University of Nebraska, Lincoln

A-38 Chenopodium quinoa as a convenient universal host. L.C. LANE. University of Nebraska, Lincoln

A-39 Alaskan native larspur infected with a plant virus. N. L. ROBERTSON. USDA ARS, Palmer AK

A-40 A tenuivirus is associated with wheat yellow head disease in Kansas. D.L. SEIFERS (1), R. Salomon (2), Y.-M. She (3), S. Haber (4), W. Ens (3), K.G. Standing (3), T.L. Harvey (1), and T.J. Martin (1). (1) Kansas State University, Hays; (2) The Volcani Center, Bet Dagan, Israel; (3) University of Manitoba, Winnipeg, MB, Canada; and (4) Agriculture & Agri-Food Canada, Winnipeg, MB, Canada

A-41 Effects of Bean pod mottle virus and Soybean mosaic virus, alone and in combination, on soybean seed coat mottling. H.A. HOBBS (1), G.L. Hartman (1,2), R. L.Bernard (1), L.L.Domier (1,2), W.L. Pedersen (1), and D.M. Eastburn (1). (1) University of Illinois, Urbana, and (2) USDA ARS, Urbana, IL

A-42 Movement and accumulation of Tomato spotted wilt virus in peanut (groundnut). B. MANDAL, H. R. Pappu, A. K. Culbreath and J.W. Todd. University of Georgia, Tifton

A-43 Single-stranded DNA-binding protein gene in plasmid (pPSA45) isolated from severe strain of western aster yellows phytoplasma. J. RIR-SIMA-AH and M.E Shaw . New Mexico Highlands University, Las Vegas

A-44 A mutualistic relationship between the Mexican bean beetle and bean pod mottle virus. R.O. Musser, S.M. Hum-Musser, and R.C. GERGERICH. University of Arkansas, Fayetteville

A-45 Molecular characterization of Infectious A and B components for Macroptilium mosaic virus. A.M. IDRIS, J. Bird and J.K. Brown. University of Puerto Rico, Rio Piedras, PR

A-46 RNA-binding activities of the Lettuce infectious yellows virus-encoded p32. I.C. LIVIERATOS, T. Tian and B.W. Falk. University of California, Davis

A-47 Transmission of maize streak virus genome monomers to maize kernels by vascular puncture inoculation. M.G. REDINBAUGH. USDA ARS, Ohio State University, Wooster

A-48 A gene from Nicotiana bigelovii selectively suppresses cell death induced during the hypersensitive response of Nicotiana edwardsonii to CaMV infection. J. CAWLY, A. Cole, L. Kiraly, and J. Schoelz. University of Missouri, Columbia

A-49 Distribution and developmental regulation of a putative receptor for TSWV in Frankliniella occidentalis. M. L. ERICKSON (1), S. Kumm (2), A.E. Whitfield (3), R.B. Medeiros (4), T.L. German (3), and D.E. Ullman (3). (1) University of California, Davis; (2) Universitat Halle, Germany; (3) University of Wisconsin, Madison; and (4) Universidade de Brasilia, Brazil

A-50 Response of peanut genotypes to mechanical inoculation by Tomato spotted wilt virus. B. MANDAL (1), H.R. Pappu (1), A.K. Culbreath (1), C.C. Holbrook (2), D.W. Gorbet (3) and J.W. Todd (1). (1) University of Georgia, Tifton; (2) USDA ARS, Tifton GA; and (3) University of Florida, Marianna

A-51 Detection of Phytophthora sojae and Fusarium solani f. sp. glycines from soybean seeds and associated debris. S. LI (1), and G.L. Hartman (1,2). (1) University of Illinois, Urbana, and (2) USDA ARS, Urbana IL

A-52 Real-time fluorescent PCR detection of fungal plant pathogens using the Smart Cycler. R.D. FREDERICK and C.L. Snyder. USDA ARS, Fort Detrick MD

A-53 Improved Bio-PCR test for detection of Acidovorax avenae subsp citrulli in watermelon and cantaloupe seeds. P.S. RANDHAWA (1), S.S. Pannu (1), and N.W. Schaad (2). (1) California Seed & Plant Lab., Inc., Elverta CA, and (2) USDA ARS, Fredrick MD

A-54 Detection of Banana streak virus by IC-PCR-ELOSA. M. Delanoy, M.H. JIJAKLI, and P. Lepoivre. Gembloux Agricultural University, Gembloux, Belgium

A-55 Nandina mosaic virus is closely related to Plantago asiatica mosaic virus. P.L. HUGHES, M.T. Zimmerman, and S.W. Scott. Clemson University, Clemson SC

A-56 Epidemiology of aster yellows diseases in various vegetable crops in Texas. I.-M. LEE (1), R.A. Dane (1), M.C. Black (2), and N. Troxclair (2). (1) USDA ARS, Beltsville MD, and (2) Texas A&M University, Uvalde

A-57 Molecular diagnostics for the field conditions. K. Haymes (1), D. SCOTT (1,2) and C. Thomas. (1) D-Squared BioTechnologies Incorporated, Atlanta GA, and (2) Morehouse College, Atlanta GA

A-58 An immunocapture assay for Pyricularia grisea, causal agent of gray leaf spot (blast) of perennial ryegrass (Lolium perenne) turf. W. UDDIN (1), G. Viji (1), G. L. Schumann (2), and S. H. Boyd (3). (1) Pennsylvania State University, University Park; (2) University of Massachusetts, Amherst; and (3) Hydros Environmental Diagnostics, Falmouth MA

A-59 Current status of the drying syndrome (seca) of olive trees in Argentina. B.A. PEREZ (1), D. Barreto (1,2), D. Docampo (1), L. Otero (1), M. Costilla (3), M. Roca (4), and S. Babbitt (2). (1) INTA, Castelar, Argentina; (2) FAUBA; (3) EEA O. Colombres; (4) SENASA

A-60 Isolation of aster yellows phytoplasma genomic DNA from lettuce. J. ZHANG, S.A. Hogenhout and S.A. Miller. Ohio State University, Wooster

A-61 Wheat stripe rust epidemics and races of Puccinia striiformis f. sp. tritici in the United States in 2000. X.M. CHEN (1,2), M. Moore (2), E.A. Milus (3), D.L. Long (1,4), R.F. Line (2), D. Marshall (5), and L. Jackson (6). (1) USDA ARS, Pullman WA; (2) Washington State University, Pullman; (3) University of Arkansas, Fayetteville; (4) University of Minnesota, St. Paul; (5) Texas A&M University, Dallas; and (6) University California, Davis

A-62 Survey for soybean cyst nematode in southeastern North Dakota. B.D. NELSON and G. Harrington. North Dakota State University, Fargo

A-63 Survey of aphid-borne cucurbit viruses in KwaZulu-Natal, South Africa, and their control using cultural methods. K.R. Cradock (1), M.D. Laing (1) and J.V. DA GRACA (2). (1) University of Natal, Pietermaritzburg, South Africa, and (2) Texas A&M University, Weslaco

A-64 A new virus-associated disease of corn in Minnesota. B.E.L. LOCKHART. University of Minnesota, St. Paul

A-65 Carryover of TMV on tobacco seeds and systemic movement in resistant cultivars. W.A.GUTIERREZ , J.W. Moyer and T.A. Melton. North Carolina State University, Raleigh

A-66 Yield loss and juice quality changes in sugarcane caused by sugarcane yellow leaf virus. M.P. GRISHAM (1), Y.B. Pan (1), B.L. Legendre (2), and M.A. Godshall (3). (1) USDA ARS, Houma LA; (2) Louisiana State University Agricultural Center, Baton Rouge; and (3) Sugar Processing Research Institute, Inc., New Orleans LA

A-67 Powdery mildew caused by Erysiphe pisi on alfalfa in Idaho and Oregon. S.K. MOHAN (1), V.P. Bijman (1), and D.R. Miller (2). (1) University of Idaho, Parma, and (2) ABI Alfalfa Inc., Nampa ID

A-68 Rates of plant-to-seed and seed-to-seedling transmission of Erwinia stewartii in maize. P.M. MICHENER, J.K. Pataky, and D.G. White. University of Illinois, Urbana

A-69 Re-emergence of red root rot of corn in Colorado. T. D. BLUNT (1), B. Ambruzs (2), and W. Brown (1). (1) Colorado State University, Ft. Collins, and (2) Iowa State University, Ames

A-70 Corn as a non-rhizoctonia host in an irrigated system. S. DJONOVIC and W. Brown. Colorado State University, Ft. Collins

A-71 Genetic analysis and pathogenicity tests on the Mycosphaerella blight fungus, Mycosphaerella pinodes. J.X. ZHANG (1), W.G.D. Fernando (1), and A. Xue (2). (1) University of Manitoba, Winnipeg, MB, Canada, and (2) Agriculture and Agri-Food Canada, Morden, MB

A-72 Regression and artificial neural network modeling for the prediction of gray leaf spot of maize. P.A. PAUL and G.P. Munkvold. Iowa State University, Ames

A-73 Identification of molecular markers putatively associated with Stagonospora nodorum blotch resistance in wheat. L.K. HAWKINS (1), S.L. Walker (2), S. Leath (3), and J.P. Murphy (3). (1) USDA ARS, Raleigh NC; (2) Monsanto, Haubstadt IN; and (3) North Carolina State University, Raleigh

A-74 Yield losses due to Rhizoctonia root rot on soybean. C.A. Bradley (1), D.S. MUELLER (2), K.A. Ames (2) and W.L. Pedersen. (2). (1) University of Idaho, Kimberly, and (2) University of Illinois, Urbana

A-75 Evaluation of Quadris applications for control of Rhizoctonia root rot of sugar beets in Nebraska. R.M. HARVESON and R.G. Wilson. University of Nebraska, Scottsbluff

A-76 Effect of Bean pod mottle virus on soybean seed quality. A.D. ZIEMS, L.J. Giesler, G.L. Graef, and L.C. Lane. University of Nebraska, Lincoln

A-77 Yield and growth reductions in winter wheat infected with wheat streak mosaic virus. M.A.C. LANGHAM (1), D.C. Doxtader (1), S.D. Haley (2), S. Kalsbeck (1), R.S. Little (1), and A.M. Ibrahim (1). (1) South Dakota State University, Brookings, and (2) Colorado State University, Fort Collins

A-78 A PCR-based protocol to determine if Sphaeropsis sapinea is present in asymptomatic needles of Austrian Pines. J.L. FLOWERS, J.R. Hartman, and L.J. Vaillancourt. University of Kentucky, Lexington

A-79 The occurrence of Phytophthora cinnamomi on loblolly decline sites in Alabama. A. WEBER (1), J. Jones (1), N. Hess (2), E. Carter (3), and J. Stienman (4). (1) Louisiana State University, Baton Rouge; (2) US Forest Service, Pineville LA; (3) US Forest Service, Auburn University, Auburn AL; and (4) US Forest Service, Ashville NC

A-80 Tip dieback associated with Lasiodiplodia theobromae infection. L.W. JOLLEY and R. L. Hedden. Clemson University, Clemson SC

A-81 Leptographium species and their vectors as components of loblolly pine decline. L. Eckhardt (1), J. JONES (1), N. Hess (2), E. Carter (3), and J. Stienman (4). (1) Louisiana State University, Baton Rouge; (2) US Forest Service, Pineville LA; (3) US Forest Service, Auburn University, Auburn AL; and (4) US Forest Service, Ashville NC

A-82 Occurrence of dsRNA elements in isolates of the pine pathogen, Sphaeropsis sapinea, from diverse geographic sources. J. DE WET (1,2,3), N. Moleleki (1,2,3), O. Preisig (1,2), M.J. Wingfield (1,2) and B.D. Wingfield (1,2,3). (1) Forestry and Agricultural Biotechnology Institute, Pretoria, South Africa; (2) Tree Pathology Co-operative Programme; and (3) University of Pretoria, Pretoria, South Africa

A-83 Detection of decay fungi in phenolic-rich red oak and oriented strand board. C.A. JASALAVICH, A. Ostrofsky and J. Jellison. University of Maine, Orono

A-84 Seasonal and genetic differences between Discula destructiva and Discula species. A.M. SHEER, R.N. Trigiano, A.S. Windham, and M.T. Windham. University of Tennessee, Knoxville

A-85 Detection and identification of fungal pathogens and endophytes of conifer foliage by PCR and dot-blot assays. M. CATAL and G.C. Adams. Michigan State University, East Lansing

A-86 Pine needle rust impact relative to interspecific plant competition and telial host density. J.D. MIHAIL (1), J.N. Bruhn (1), T.R. Meyer (2), and F.W. Bell (2). (1) University of Missouri, Columbia, and (2) Ontario For. Res. Inst., Sault Ste. Marie, Canada

A-87 Black stain root disease centers in pinyon Pine. H.S.J. KEARNS and W.R. Jacobi. Colorado State University, Ft. Collins

A-88 Cartapip, a potential biological agent for sapstain, can be traced in selected geographic areas by PCR-based assays targeting the beta-tubulin gene. S.H KIM (1), S. Schroeder (2), S.W. Lee and C. Breuil (1). (1) University of British Columbia, Vancouver, BC, Canada, and (2) Carl von Ossietzky University of Oldenburg, Germany

A-89 Evidence for direct grape rachis and berry infection by Phomopsis viticola. O. ERINCIK, L.V. Madden, D.C. Ferree, and M.A. Ellis. Ohio State University, Wooster

A-90 Anthracnose of Strawberry I: Early ontogeny of Colletotrichum fragariae. J. Avant (1), K.J. Curry (1), and B.J. SMITH (2). (1) University Southern Mississippi, Hattiesburg, and (2) USDA ARS, Poplarville MS

A-91 Anthracnose of strawberry II: Trophic relationships of Colletotrichum acutatum and C. fragariae. M. Abril (1), K.J. Curry (1), B.J. SMITH (2). (1) University of Southern Mississippi, Hattiesburg, and (2) USDA ARS, Poplarville MS

A-92 Monilinia leaf blight and fruit mummification on mayhaw in Georgia. H. SCHERM. University of Georgia, Athens

A-93 First report of Verticillium longisporium isolated from horseradish roots in Illinois. W. CHEN (1), M. Babadoost (2), M.A. Norton (2), R.M. Skirvin (2), and C.E. Eastman (1). (1) Illinois Natural History Survey, Champaign, IL, and (2) University of Illinois, Urbana

A-94 Morphological and molecular characteristics of Australian, North American and Portuguese isolates of Phomopsis from grapevine. B.X. KILLIGREW (1), B. Rawnsley (2), E.S. Scott (3), and K. Sivasithamparam (1). (1) University of Western Australia, Perth, WA, Australia; (2) South Australian Research and Development Institute, Adelaide, SA, Australia; and (3) University of Adelaide, Adelaide, SA, Australia.

A-95 Fungi associated with replant disorder of peach and plum. L.R. BULLUCK III (1), G.T. Browne (2), and T.J. Trout, (3). (1) University of California, Davis; (2) USDA ARS, University of California, Davis; and (3) USDA ARS, Fresno CA

A-96 First report of powdery mildew on Canada thistle in North America. K.F. CHANG (1), R.J. Howard (1), and S.F. Hwang (2). (1) Crop Diversification Centre South, Brooks, AB, Canada, and (2) Alberta Research Council, Vegreville, AB, Canada

A-97 Fusarium cone tip blight: A new disease of Humulus lupulus. J.C. BIENAPFL (1), C.M. Ocamb (1), R. Klein (2), and M. Nelson (3). (1) Oregon State University, Corvallis; (2) California Pistachio Commission, Fresno; and (3) Washington State University, Prosser

A-98 Population dynamics of Colletotrichum acutatum and C. gloeosporioides causing fruit rots in the southeastern United States as inferred by RAPD analysis. J. CHEN (1), R. Albibi (1), and B.J. Smith (2). (1) Florida A&M University, Tallahassee, and (2) USDA ARS, Poplarville MS

A-99 Progression of rot in stored cranberries. R.O. Olatinwo and A.M.C. SCHILDER. Michigan State University, East Lansing

A-100 Experimental and natural hosts of Itersonilia perplexans. R.J. MCGOVERN (1), H. Horita (2), and T.E. Seijo (1). (1) University of Florida, Bradenton, and (2) Hokaido Ornamental Plants and Vegetables Research Center, Higashi-Takikawa, Takikawa, Hokaido

A-101 Web blight of East India holly fern caused by Rhizoctonia solani. R.T. MCMILLAN JR., T.F. Wood IV, and W.R. Graves. University of Florida, Homestead

A-102 Characterization of Botrytis cinerea from apple for pathogenicity, fungicide resistance and vegetative compatibility. P.L. SHOLBERG, K.E. Bedford, S. Probert, and D. O’Gorman. Agriculture & Agri-Food Canada, Summerland, BC, Canada

A-103 Characterization of fruit infection periods for bacterial spot on peach. C.M. PAGANI (1,2), C. Leoni (2), E. Silvera (3), and D.F. Ritchie (1). (1) North Carolina State University, Raleigh; (2) National Agriculture Research Institute, Uruguay; and (3) University of Uruguay, Garzon, Uruguay

A-104 Control of powdery mildew on gerbera in Hawaii. J.Y. UCHIDA and C.Y. Kadooka. University of Hawaii, Honolulu

A-105 Detection of possible systemic fungicide resistance in Western Australian Monilinia populations. A.D. WHERRETT (1), K. Sivasithamparam (1), and S. Kumar (2). (1) University of Western Australia, Nedlands, WA, Australia, and (2) Agriculture Western Australia, South Perth, WA, Australia

A-106 Evaluation of a combined alternate-row middle spray strategy against peach scab and plum curculio. Z. LAN, H. Scherm, and D.L. Horton. University of Georgia, Athens.

A-107 Impact of application rate and interval on the control of powdery mildew and Cercospora leaf spot on hydrangea with Heritage. A.K. HAGAN, J.W. Olive, J. Stephenson, and M.E. Rivas-Davila. Auburn University, Auburn AL

A-108 Control of Alternaria leaf spot on African marigold with Heritage. A.K. HAGAN, J.R. Akridge, and M.E. Rivas-Davila. Auburn University, Auburn AL

A-109 Modeling sporulation of Phomopsis amygdali on peach. N. LALANCETTE, K.A. Foster, and D.M. Robison. Rutgers University, Bridgeton NJ

A-110 The importance of Inbreeding on selection and gene flow for maintaining genetic variation in Ustilago maydis. C.W. BARNES and J.V. Groth. University of Minnesota, St. Paul

A-111 Epidemiology of Botrytis allii (syn. B. aclada) - onion neck rot. M.I. CHILVERS (1), F.S. Hay (1), C.R. Wilson (1), and D.A. Metcalf (2). (1) Tasmanian Institute of Agricultural Research, University of Tasmania, Burnie, TAS, Australia, and (2) DPIWE, Newtown, TAS, Australia

A-112 New virulent and aggressive strains of Colletotrichum gloeosporioides on Stylosanthes species. S. CHAKRABORTY and R. Perrott. University of Queensland, Brisbane, QLD, Australia

A-113 Uropyxis petalostemonis infecting white prairie clover may be limited by current levels of precipitation in the Kansas tallgrass prairie. K.A. Garrett (1), H.M. Alexander (2), H.U. AHMED (1), and S.P. Dendy (1). (1) Kansas State University, Manhattan, and (2) University of Kansas, Lawrence

A-114 Seasonal patterns of spore release in Phomopsis viticola in grapes. J. ROGERS, A.M.C. Schilder, and R.W. Sysak. Michigan State University, East Lansing

A-115 Green manures influence pathogen inhibitory potential of indigenous antagonist communities in soil. L.L. Kinkel, K.D. Stromberg, J.M. Flor, and E. WIGGINS. University of Minnesota, St. Paul

A-116 Means of dissemination of Fusarium oxysporum f. sp. radicis-lycopersici, the causal agent of Fusarium crown and root rot in tomatoes. Y. Rekah (1), D. Shtienberg (2), and J. KATAN (1). (1) Hebrew University of Jerusalem, Rehovot, Israel, and (2) The Volcani Center, Bet Dagan, Israel

A-117 Spatial distribution of rhizoctonia root rot in direct-seeded barley. T.C. PAULITZ (1), H. Zhang (2) and R.J. Cook (2). (1) USDA ARS, Pullman WA, and (2) Washington State University, Pullman

A-118 Distribution of sudden death syndrome in a furrow-irrigated field. J.C. RUPE and C.B. Becton. University of Arkansas, Fayetteville

A-119 Spore gradients of Gibberella zeae from overwintered inoculum in wheat fields. L. de Luna (1), I. Bujold (2), O. Carisse (2) and T.C. PAULITZ (3). (1) McGill University, Ste. Anne de Bellevue, QC, Canada, and (2) Agriculture and Agri-Foods Canada, St. Jean sur Richelieu, QC; and (3) USDA ARS, Pullman WA

A-120 Genetic diversity of Claviceps africana in Australia. B. Komolong, S. CHAKRABORTY, M. Ryley, and D. Yates. University of Queensland, Brisbane, QLD, Australia

A-121 Local genetic diversity of Gibberella zeae populations from corn stubble, wheat stubble and infected wheat heads. A.M. JAROSZ, J. Schaupp and N Kieu. Michigan State University, East Lansing

A-122 Fusarium head blight: Inoculum detection, disease progress, and environmental influences. L. Osborne, Y. JIN, and R. Kohl. South Dakota State University, Brookings

A-123 Spread of Apergillus parasiticus in corn. K.M. TUBAJIKA and K.E. Damann. Louisiana State University, Baton Rouge

A-124 Temperature effects on development of aerial blight in soybean. P.U. KURUPPU and R.W. Schneider. Louisiana State University, Baton Rouge

A-125 Effects of temperature, wetness duration, and leaf age on infection of strawberry foliage by Phomopsis obscurans. M. NITA, M.A. Ellis, L. L. Wilson, and L. V Madden. Ohio State University, Wooster

A-126 Assessment of the accuracy and precision of site-specific estimates of weather parameters in the Northern Pacific Region of Costa Rica. M.L. GLEASON (1), S.E. Taylor (1), R. Villalobos (3), L.F. Arauz (2), and K.-S. Kim (1). (1) Iowa State University, Ames, IA; (2) University of Costa Rica, San José, Costa Rica; and (3) Instituto Meteorológico Nacional, San José, Costa Rica

A-127 Within-season dynamics of yield loss due to pecan scab fruit infections. K.L. STEVENSON (1) and P.F. Bertrand (2). (1) University of Georgia, Athens, and (2) Rural Development Center, Tifton GA

A-128 A simulation model to predict progress of rice leaf blast severity based on near real-time weather data. K.R. Kim (1), E.W. PARK (1), W.S. Kang (1), S.I. Cho (1), J.I. Yun (2), and H. Hwang (3). (1) Seoul National University, Suwon, Korea, (2) Kyung Hee University, Suwon, Korea, and (3) Sungkyunkwan University, Suwon, Korea

A-129 Rapid movement of inoculum into wounds on tomato fruit. J. A. BARTZ, M. Mahovic, and D. Concelmo. University of Florida, Gainesville

A-130 Vertical distribution and carpogenic germination of pseudosclerotia of Monilinia vaccinii-corymbosi following tillage. H.K. NGUGI and H. Scherm. University of Georgia, Athens

A-131 Management practices for the control of Aspergillus flavus and aflatoxin contamination in stored maize in West Africa. K. HELL, G.A. Ayeni and K.F. Cardwell. International Institute of Tropical Agriculture, Cotonou, Benin

A-132 Response of Fusarium oxysporum f. sp. niveum population to watermelon cultivar resistance, fumigation and biocontrol agent. X.G. ZHOU (1) and K.L. Everts (1,2). (1) University of Maryland, Salisbury, and (2) University of Delaware, Georgetown

A-133 Role of the RGD motif in action of Ptr ToxA. J. RASMUSSEN, S. Meinhardt, W. Cheng, and C. Kwon. North Dakota State University, Fargo

A-134 Cochliobolus heterostrophus and Fusarium graminearum: Evidence for a common virulence factor. S.-W. LU, B. Gillian Turgeon, and O.C. Yoder. Cornell University, Ithaca NY

A-135 Transformation of the leafy spurge pathogen Fusarium oxysporum for expression of green fluorescent protein. M.B. McMahon (1), L.F. YOURMAN (1), A.J. Caesar (2), and D.G. Luster (1). (1) USDA ARS, Ft. Detrick MD, and (2) USDA ARS, Sidney MT

A-136 Analyses of a ketoreductase ORF at the AVR1-MARA locus of Magnaporthe grisea. M.W. HARDING, M. Alejandra Mandel, and M.J. Orbach. University of Arizona, Tucson

A-137 Components of citrus peel selectively stimulate growth of pathogenic Penicillium species. R.R. STANGE and T.G. McCollum. USDA ARS, Fort Pierce FL

A-138 Isolation and analysis of ectomycorrhizal fungal genes coding for proteins interacting with a symbiosis regulated Ras signaling pathway. S. Sundaram, M.J. Hymes, J.R. Brand, and G.K. PODILA. Michigan Technological University, Houghton

A-139 Comparison of two cucumber cultivars to chemical and biological inducers of systemic acquired resistance against Didymella bryoniae. A.B. DA ROCHA, L. Velasquez, and R. Hammerschmidt. Michigan State University, East Lansing

A-140 Uncoupling sequences within CaMV gene VI required for translational transactivation from those that elicit a hypersensitive defense response. K. PALANICHELVAM and J.E. Schoelz. University of Missouri, Columbia

A-141 Ribosome-inactivating proteins inhibit translation of capped and uncapped viral RNAs. J.M. VIVANCO. Colorado State University, Ft. Collins

A-142 Possible heterologous encapsidation in transgenic citrus plants expressing the major capsid protein of citrus tristeza virus. F.M. OCHOA (1), C.L. Niblett (2), and R.F.Lee (1). (1) University of Florida, Lake Alfred, and (2) University of Florida, Gainesville

A-143 Identification of functional proteins encoded by the maize chlorotic dwarf waikavirus genome. R. CHAOUCH (1), K.Willie (2), M.G. Redinbaugh (2), and S.A. Hogenhout (1). (1) Ohio State University, Wooster, and (2) USDA ARS, Ohio State University, Wooster

A-144 Analysis of differential gene expression in soybean roots in response to Fusarium solani infection by microarrays. M. Javed Iqbal (1), T. Maguire (2), K. Meksem (1), S. Yaegashi (1), V. Njiti (1), J. Shultz (1), P. Gresshoff (2), and D. LIGHTFOOT (1). (1) Southern Illinois University, Carbondale, and (2) University of Queensland, Brisbane, QLD, Australia

A-145 Genetic analysis of chitinolytic activity from the biocontrol agent Stenotrophomonas maltophilia strain C3. J.A. BICK, R.M. Reedy and D.Y. Kobayashi. Rutgers University, New Brunswick, NJ

A-146 Isolation and characterization of two symbiosis-regulated genes from ectomycorrhizal fungus Laccaria bicolor. J. Brand, M. Hymes, J. Zheng, S.T. Hiremath, and G.K. PODILA. Michigan Technological University, Houghton

A-147 Characterization of an antifungal ribosome-inactivating protein exuded from root cultures of Phytolacca americana. S.W. PARK and J.M. Vivanco. Colorado State University, Fort Collins

A-148 Hypodermal suberization leads to effective structural barriers in barley roots against Chaetomium globosum invasion. A. REISSINGER and R.A. Sikora. University Bonn, Bonn, Germany

A-149 Inducers of systemic acquired resistance in plants stimulate a systemic cells to cells signal translocation accompanying calcium influx to induce a systemic oxidative burst at remote tissues. K. Sunazaki, M. Yamashita, H. Yoshioka, K. Kawakita, and N. DOKE. Nagoya University, Nagoya, Japan

A-150 Quantification of Magnaporthe grisea in infected leaves using real-time PCR. M. Qi and Y. YANG. University of Arkansas, Fayetteville

A-151 Stability of antifungal peptides in intercellular wash fluid. G.J. BUNKERS (1), Y. Wu (2), J. Liang (1), and J.W. Seale (1). (1) Monsanto Co., St. Louis MO, and (2) Biosource Technologies, Vacaville CA

A-152 Antisense expression of an Arabidopsis plastid omega-3 fatty acid desaturase gene enhances the necrotic lesion formation by TMV infection in transgenic tobacco plants. Y.J. IM, Y.C. Kim, G.C. Chung, K.Y. Seong, and B. H. Cho. Chonnam National University, Kwangju, Korea

A-153 The integrated genetic and physical map of soybean: Toward a functional, high density disease resistance gene map. M. Javed Iqbal (1), K. Triwitayakorn (1), H.B. Zhang (2), J. Shultz (1), K. Meksem (1), and D.A. LIGHTFOOT (1). (1) Southern Illinois University, Carbondale, and (2) Texas A&M University, College Station

A-154 The transformation of cucumber expressing the sense and antisense sequence of acidic chitinase Type III. L. VELASQUEZ, A. da Rocha, and R. Hammerschmidt. Michigan State University. East Lansing

A-155 Molecular and biochemical analysis of the defense response of sugar beet taproots to infection by Rhizoctionia solani. S. NAGENDRAN (1), J. M. Halloin(2), B.G. De Los Reyes (2), and J. M. McGrath (2). (1) Michigan State University, East Lansing, and (2) USDA ARS, East Lansing MI

A-156 Local pH increase during Colletotrichum attack is induced by ammonia secretion. D. PRUSKY, J. L. McEvoy, and W. S. Conway. USDA ARS, Beltsville MD

A-157 Reduction of fumonisin levels in the grain of Bt maize. B. HAMMOND (1) K. Campbell (1), C. Pilcher (1) T. Degooyer (1), A. Robinson (1), D. Melcion (2) B. Cahagnier (2), A. Pietri (3) and G. Piva (3). (1) Monsanto Company, St. Louis, MO; (2) INRA, Nantes, France; and (3) University Cattolica del Sacro Cuore, Piacenza, Italy

A-158 Changing virulence patterns of Uromyces appenidiculatus to the bean cultivar Pinto Olathe from 1981 to 1992 in Nebraska. A.T. ALLEYNE, J. Fenton, J.R. Steadman, K.M. Eskridge and L.A. Sutton. University of Nebraska, Lincoln

A-159 Brassica green manures change the growth in soil of Rhizoctonia solani ZG-5. T. YULIANTI, K. Sivasithamparam, and D. W. Turner. University of Western Australia, Nedlands, WA, Australia

A-160 Galacturonic acid stimulates the antagonistic activity of Ulocladium atrum 385 against Botrytis cinerea sporulation on necrotic strawberry leaf tissues. P. Berto, P. Lepoivre, and M.H. JIJAKLI. Gembloux Agricultural University, Gembloux, Belgium

A-161 Evaluation of fungal antagonists for control of cercospora leaf spot. R. T. LARTEY. USDA ARS, Sidney MT

A-162 Antibiotic properties of a protoplast fusant of Trichoderma virens and T. atroviride. M.H. WHEELER (1), L.E. Hanson (2), R.D. Stipanovic (1), H.J. Williams (3), L.S. Puckhaber (3), and C.R. Howell (1). (1) USDA ARS, College Station; (2) USDA ARS, Ft. Collins CO; and (3) Texas A&M University, College Station

A-163 Evaluation of a fungicide seed treatment and in-furrow application of mefenoxam to control seedling diseases of corn under no-till. W.L. PEDERSEN (1), K.A. Ames (1), D.S. Mueller (1), and C.A. Bradley (2). (1) University of Illinois, Urbana, and (2) University of Idaho, Kimberly

A-164 Evaluation of fungi and bacteria for biological control of Colletotrichum acutatum in vitro and on strawberry leaves. D.J. THORPE, L.F.S. Leandro, M.L. Gleason, and S.N. Wegulo. Iowa State University, Ames

A-165 Preliminary evaluation of biocontrol agents for control of Botryosphaeria blight of pistachio. W. Q. CHEN (1) and T.J. Michailides (2). (1) Northwest Agricultural University, Yangling, Shaanxi, China, and (2) University of California, Parlier

A-166 Beta-1,3-glucans and galacturonic acid enhanced the antagonistic activity of yeasts against apples postharvest rots. C. Dickburt, P. Lepoivre, and M.H. JIJAKLI. Gembloux Agricultural University, Gembloux, Belgium

A-167 Effect of combining biocontrol, heat treatment, and MCP-treatment on the reduction of postharvest decay of 'Delicious' apples. B. LEVERENTZ (1), W.J. Janisiewicz (2), W.S. Conway (1), and R.A. Saftner (1). (1) USDA ARS, Beltsville MD, and (2) USDA ARS, Kearneysville WV

A-168 Role of pyrrolnitrin produced by Burkholderia cepacia in biocontrol of Rhizoctonia stem rot of poinsettia. J. HWANG and D.M. Benson. North Carolina State University, Raleigh

A-169 Resistance of poinsettia cultivars against Rhizoctonia stem rot induced by binucleate Rhizoctonia. J. HWANG and D.M. Benson. North Carolina State University, Raleigh

A-170 Will most phylloplane yeasts out-compete Botrytis cinerea for nutrients? J.W. BUCK. University of Georgia, Griffin

A-171 Biocontrol of rose powdery mildew by Verticillium lecanii is reduced by potassium bicarbonate. F. PONCE, K. Horst, and E. Nelson. Cornell University, Ithaca NY

A-172 Peach rusty spot biological/biorational disease management. L.A. FURMAN, N. Lalancette, and J.F. White. Rutgers University, New Brunswick NJ

A-173 Effect of application method and inoculum form of Beauveria bassiana on Rhizoctonia damping-off in tomato. D. SETH, B.H. Ownley, R. Pereira, and C.H. Canaday. University of Tennessee, Knoxville

A-174 Reduction of Botrytis cinerea sporulation by Clonostachys rosea on rose debris. M.A.B. Morandi, L.A. MAFFIA, E.S.G. Mizubuti, A.C. Alfenas, and J.G. Barbosa. Universidade Federal de Viçosa, Viçosa, MG, Brazil

A-175 Climatic variables affecting the colonization of rose debris by Botrytis cinerea and Clonostachys rosea. M.A.B. Morandi, L.A. Maffia, C. D. Cruz, and E.S.G. MIZUBUTI. University Federal de Viçosa, Viçosa, MG, Brazil

A-176 Pathogen spore vectoring of a biocontrol agent for the suppression of Botrytis cinerea infection. D.W.M. COOK, P.A.G Elmer, and R.A.Hill. HortResearch, Hamilton, New Zealand

A-177 Development of a monitoring method by using RAPD and SCAR markers for two biological control agents of post-harvest diseases: Pichia anomala J121 and Pantoea agglomerans CPA-2. V. Stepien, P. Lepoivre, and M.H. JIJAKLI. Gembloux Agricultural University, Gembloux, Belgium

A-178 Biocontrol of Fusarium head blight of wheat: effect of Tween-80, culture age of antagonist and combining antagonists on disease suppression. N.I. KHAN (1), D.A. Schisler (2), and M.J. Boehm (1). (1) Ohio State University, Columbus, and (2) USDA ARS, Peoria IL

A-179 Evaluation of the curative activity of Serenade against squash powdery mildew, Erysiphe spp under laboratory conditions. C. YUAN, S. O'Brien, and S.R.Flanagan. (1) AgraQuest, Inc., Daivs CA

A-180 Bioassay development for Messenger activity. D. QIU, K. Clayton and Z-M Wei. EDEN Bioscience Corporation, Bothell, WA

A-181 Control of seedling blight in wheat by Bacillus mojavensis. C. W. BACON and D. M. Hinton. USDA ARS, Athens GA

A-182 Sporulation of Trichoderma stromaticum on cacao tissue affected by witches’ broom disease. S. SANOGO (1,3), A. Pomella (2), P.K. Hebbar (3,4), and R.D. Lumsdem (3). (1) University of Maryland, Queestown; (2) Almirante Cacau, Inc., Itabuna, Bahia, Brazil; (3) USDA ARS, Beltsville MD; and (4) M & M Mars, Inc., Hackettstown NJ

A-183 Resistance of Botryosphaeria dothidea from pistachio to a sterol biosynthesis inhibitor tebuconazole. Z. MA, T. J. Michailides, and D. P. Morgan. University of California, Parlier

A-184 In vitro antifungal activity of the wheat puroindoline proteins. C. Balconi and J.E. SHERWOOD. Montana State University, Bozeman

A-185 Acetic acid as a fumigant to reduce fungal storage rots of Japanese squash (Cucurbita maxima). F. HAY (1), R. Mudford (1), K. Clayton-Greene (2), L. Breaden (2), and S. Pethybridge (1). (1) University of Tasmania, Burnie, TAS, Australia, and (2) Forth Farm Produce Pty. Ltd., Forth, Australia

A-186 Vine-decline of melons caused by Monosporascus cannonballus: I. Preplant disease management strategies. M.E. STANGHELLINI (1), D.H. Kim (1), M.M. Waugh (1), K.C. Radewald (1), J. J. Sims (1), H.D. Ohr (1), K.S. Mayberry (2), T. Turini (2), and M.A. McCaslin (3). (1) University of California, Riverside; (2) University of California, Holtville; and(3) TRI-CAL, Inc., Corona, CA

A-187 Vine-decline of melons caused by Monosporascus cannonballus: II. Postplant disease management strategies. D. H. KIM (1), M. E. Stanghellini (1), M. M. Waugh (1), and K. S. Mayberry (2). (1) University of California, Riverside, and (2) University of California, Holtville

A-188 Vine-decline of melons caused by Monosporascus cannonballus: III. Postharvest disease management strategies. K.C. RADEWALD (1), M.E. Stanghellini (1), D.H. Kim (1), M.M. Waugh (1), K. S. Mayberry (2), and T. Turini (2). (1) University of California, Riverside, and (2) University of California, Holtville

A-189 Financial returns with select spray programs for leaf spots and rust of peanut. T.A. KUCHAREK and C.R. Semer. University of Florida, Gainesville

A-190 Control of foliar and soilborne diseases of peanut in Alabama using Headline. H.L. CAMPBELL, A.K. Hagan, and K.L. Bowen. Auburn University, Auburn AL

A-191 Incidence and control of Fusarium head blight in intensive wheat production in western Germany. E.-C. OERKE, A. Meier, U. Steiner, and H.-W. Dehne. University of Bonn, Bonn, Germany

A-192 Dissolution of grass cuticle layers. P.T. WRIGHT. University of Western Australia, Perth, WA, Australia

A-193 Control of pod and stem blight in soybean by Quadris is related to yield enhancement and apparent delay in maturity. R.W. SCHNEIDER, P.U. Kuruppu and C.G. Giles. Louisiana State University, Baton Rouge

A-194 Hot water and sodium carbonate to control postharvest green and blue molds of clementine mandarins. L. PALOU (1), J. Usall (1), J.A. Muñoz (1), J.L. Smilanick (2), and I. Viñas (1). (1) UdL-IRTA, Lleida, Catalonia, Spain, and (2) USDA ARS, Fresno, CA

A-195 Minimum effective concentration of continuously supplied SO₂ to control Botrytis decay of cold-stored table grapes. L. PALOU (1), C.H. Crisosto (1), D. Garner (1), J.L. Smilanick (2), and J.P. Zoffoli (3). (1) University of California, Davis; (2) USDA ARS, Fresno CA; and (3) Pontificia Universidad Católica, Santiago, Chile

A-196 Resistance TO QoI (=strobilurin) fungicides in Pyricularia grisea from perennial ryegrass. P. VINCELLI and E. Dixon. University of Kentucky, Lexington

A-197 Comparison of two strobilurin-based fungicides for control of foliage diseases of vegetable crops. M. MILLER and R. Hernandez. Texas A&M University, Weslaco

A-198 Post-harvest removal of sooty blotch and flyspeck on apples using commercial disinfestants. J.C. BATZER, M.L.Gleason, and F.W. Nutter Jr. Iowa State University, Ames

A-199 Effects of adjuvant chemistry on coverage, absorption, and efficacy of fungicides. D.H. GENT and H.F. Schwartz. Colorado State University, Ft. Collins

A-200 Strobilurin-based fungicides in the management of snow molds. B. SWAN, B. Ambruz, V. Valasco, W. Brown. Colorado State University, Ft. Collins

A-201 Postinfection activity of fungicides against white rust of spinach. M.J. Sullivan and J.P. DAMICONE. Oklahoma State University, Stillwater

A-202 Fungicidal activity of acidic electrolyzed oxidizing water. J.W. BUCK, M. van Iersel, R. Oetting, and Y.-C. Hung. University of Georgia, Griffin

A-203 Evaluation of new chemical management tools for powdery mildew on cantaloupe. M.E. MATHERON and M. Porchas. University of Arizona, Yuma

A-204 Sensitivity of Didymella bryoniae isolates to azoxystrobin. G. OLAYA and A. Holm. Syngenta Crop Protection, Vero Beach FL

A-205 Improved identification of pathogens and fungicide residue using cold field emmission-electron beam analysis. C.R. KRAUSE. USDA ARS, Ohio State University, Wooster

A-206 Sonata, a novel biofungicide for rust control in peppermint. W.R. SLABAUGH (1), J. Calkin (2), and J. Cacka (3). (1) AgraQuest, Inc.; Parma ID, (2) AgSolutions, Inc., Corvallis OR; and (3) Western Farm Service, Rickreall OR

A-207 A sucrose/CaCl2 combination to control decay caused by Botrytis cinerea, Colletotrichum acutatum, and Penicillium expansum. C.O. CHARDONNET (1), C.E Sams (1), W.S. Conway (2), J.R. Mount (1), and F.A. Draughon (1). (1) University of Tennessee, Knoxville, and (2) Beltsville Agricultural Research Center, Beltsville MD

A-208 Influence of select inorganic ions and pH on fungicidal activity of chlorine dioxide in water. W.E. COPES (1), G.A. Chastaganer (2), and R.L. Hummel (2). (1) USDA ARS, Poplarville MS, and (2) Washington State University, Puyallup

A-209 Role of cutting frequency and genetic resistance in prevention of winter injury of alfalfa by the cottony snow mold pathogen. S.F. HWANG (1), D.A. Gaudet (2), G.D. Turnbull (1), K.F. Chang (3) and R.J. Howard (3). (1) Alberta Research Council, Vegreville, AB, Canada; (2) Agriculture and Agri-Food Canada, Lethbridge, Canada; and (3) Crop Diversification Centre South, Brooks, AB, Canada

A-210 Varietal resistance against Xanthomnas campestris pv. manihotis, the causal agent of the cassava bacterial blight. F. WITT , K. Wydra, A. Mavridis, and K. Rudolph. (1) Institute of Plant Pathology, Goettingen, Germany

A-211 Influence of silicon rates and plant growth stages on rice sheath blight development. F. RODRIGUES (1), F. Vale (2), L. Datnoff (1), A. Prabhu (3), G. Korndörfer (4) and L. Zambolim (2). (1) University of Florida, Gainesville; (2) UFV, Viçosa, MG Brazil; (3) EMBRAPA-CNPAF, Santo Antônio de Goiás, GO, Brazil; and (4) UFU-ICIAG, Uberlândia, MG, Brazil

A-212 Incidence and severity of cotton seedling diseases under stale seed-bed production. P.D. COLYER and P.R. Vernon. Louisiana State University, Bossier City

A-213 Effect of burning wheat and barley residues on the survival of Fusarium graminearum and Cochliobolus sativus. R. Dill-Macky and B. SALAS. University of Minnesota, St. Paul

A-214 Wheat cultivation subsequent to Brassica napus seed meal amendment reduces phytotoxicity and enhances growth of apple in orchard replant soils. M. MAZZOLA and D. Funnell. USDA ARS, Wenatchee WA

A-215 Increased severity of Erwinia soft rot on callas in the presence of phosphate. J.A. GRACIA-GARZA (1), T. Blom (2), W. Brown (3), W. Allen (1), and D.P. Roberts (4). (1) Agriculture and Agri-Food Canada, Vineland Station, ON; (2) University of Guelph, Vineland Station, ON, Canada; (3) OMAFRA, Vineland Station, ON, Canada; and (4) USDA ARS, Beltsville, MD

A-216 Differential root exudation of chickpea (Cicer arietinum) on different soils and its role in phosphorus acquisition. J. STEVENS (1), E.J. Veneklaas (2), K.H.M. Siddique (3), M. Bolland (3), and H. Lambers (2). (1) University of Western Australia, WA, Australia; (2) University of Western Australia, WA, Australia; and (3) AGWEST, WA, Australia

A-217 Suppression of Phytophthora blight on annual vinca with phosphite as a phosphorus source. T.J. Banko and C.X. HONG. Virginia Tech, Virginia Beach

A-218 Effect of tillage on leaf spot diseases of spring wheat in Manitoba. J. GILBERT and S.M. Woods. Agriculture and Agri-Food Canada, Winnipeg, MB, Canada

A-219 Seed decay in soil associated with green manure amendments. N. SHORT (1), K. Sivasithamparam (1), R. Gallagher (1), B. Degens (2), and N. Galwey (1). (1) University of Western Australia, Perth, WA, Australia, and (2) Waters and Rivers Commission, WA, Australia

A-220 Influence of formononetin and NaCl on VA-mycorrhizae and fusarium crown and root rot in asparagus. W.H. ELMER. Connecticut Agricultural Experiment Station, New Haven

A-221 The effect of chisel and moldboard tillage on dry bean and soybean root rot caused by Fusarium solani f. sp. phaseoli and Rhizoctonia solani in Minnesota. C. ESTEVEZ DE JENSEN, J.E. Kurle, and J.A. Percich. University of Minnesota, St. Paul

A-222 Planting date effects on tomato spotted wilt in resistant and susceptible peanut cultivars. S.P. McKEOWN (1), J.W. Todd (1), A.K. Culbreath (1), D.W. Gorbet (2), and J.R. Weeks (3). (1) University of Georgia, Tifton; (2) University of Florida, Marianna; and (3) Auburn University, Headland AL

A-223 Reduced fungicide applications for disease management of pumpkin with no-till production. K. L. EVERTS. University of Maryland, Georgetown

A-224 Lesion-causing efficiency of Venturia inaequalis on six apple cultivars. J.M. CLIFFORD and W.E. MACHARDY. University of New Hamsphire, Durham

A-225 Evaluation of food-grade dent corn and sweet corn hybrids for fumonisin production. C.E. KLEINSCHMIDT (1), J.K. Pataky (1), C.M. Maragos (2), and D.G. White (1). (1) University of Illinois, Urbana IL, and (2) USDA ARS, Peoria IL

A-226 Effects of CryIA(b) on Aspergillus ear rot and aflatoxin in commercial corn hybrids. L.M. MAUPIN (1), M.J. Clements (1), S.L. Walker (2), and D.G. White (1). (1) University of Illinois, Urbana, and (2) Monsanto, Haubstadt IN

A-227 Evaluation of hosta cultivars for resistance to crown rot induced by Sclerotium rolfsii var. delphinii. B.A. EDMUNDS, M.L. Gleason, and S.N. Wegulo. Iowa State University, Ames

A-228 Resistance to powdery mildew in Cornus florida. M.T. MMBAGA, I.M. Eujayl, and H. Sheng. Tennessee State University, McMinnville

A-229 Screening melon germplasm for resistance to stem canker (Myrothecium roridum). K.M. CROSBY and M.E. Miller. Texas A&M University, Weslaco

A-230 Development of a greenhouse procedure to screen for tolerance to Sclerotinia in canola. W.G.D. FERNANDO (1) and J. Wu (2). (1) University of Manitoba, Winnipeg, MB, Canada, and (2) Huazong Agricultural University, Wuhan, China

A-231 Influence of mist-irrigation on fusarium head blight and seed characteristics of wheat and barley. C.K. EVANS and R. Dill-Macky. University of Minnesota, St. Paul

A-232 Natural resistance mechanisms in golden-fleshed (Hort16A) kiwifruit against Botrytis cinerea. K. WURMS and D. Lauren. HortResearch, Hamilton, New Zealand

A-233 Silicon-induced cell wall fortification of rice leaves, a cytological mechanism of blast resistance. S. G. KIM, K. W. Kim, and E. W. Park. Seoul National University, Suwon, Korea

A-234 Efficient genetic transformation of citrus for potential resistance to plant pathogenic viruses, bacteria and fungi. Z.N.Yang, C.M. Herron, J.J. Molina, J.V. da Graça, and T.E. MIRKOV. Texas A&M University, Weslaco

A-235 Effect of postharvest calcium treatment on apple fruit decay and polygalacturonase expression by Colletotrichum acutatum. E. PARK (1), J. L. McEvoy (1), B. Leverentz (1), W. S. Conway (1), C. E. Sams (2), and D. Prusky (1). (1) USDA ARS, Beltsville MD, and (2) University of Tennessee, Knoxville

A-236 Changes in the levels and activity of isoforms of aspartic proteinases in potato leaves of two potato cultivars with different degree of field resistance after infection with P. infestans. M.G. GUEVARA, M. Huarte and G.R. Daleo. Universidad Nacional de Mar del Plata, Mar del Plata, Argentina

A-237 Oxycom treatment activates a mitogen-activated protein kinase pathway during resistance responses in plants. K.Y. YANG (1), K.A. Blee (1), S. Zhang (2) and A.J. Anderson (1). (1) Utah State University, Logan, and (2) University of Missouri, Columbia

A-238 Suppressed reproduction of Globodera tabacum solanacearum on disease-resistant cultivars of flue-cured tobacco. C. S. JOHNSON. Virginia Polytechnic Institute and State University, Blackstone

M-1 Evolutionary relationships of fungal motor proteins. C.L. SCHOCH, B.G. Turgeon, O.C. Yoder, and J.R. Aist. Cornell University, Ithaca NY, and Torrey Mesa Research Institute, La Jolla CA

M-2 Slash decay fungi associated with thinning treatments in northern Idaho. J.A. MICALES (1), M.T. Banik (1), and R. Graham (2). (1) USDA Forest Service, Madison WI, and (2) USDA Forest Service, Moscow ID

M-3 Effect of Cordyceps sinensis on the on the proliferation of HeLa cell. D.-H. LEE and H.-W. Kim. University of Seoul, Korea

M-4 Neurospora in western North America: a model system in the backyard. D.L. JACOBSON (1,2), M.M. Barton (2), J.R. Dettmen (2), A.J. Powell (3) G.S. Saenz (3), J.C. Hirsch (3), J.W. Taylor (2), N.L. Glass (2), and D.O. Natvig (3). (1) Stanford University, Stanford CA; (2) University of California, Berkeley; and (3) University of New Mexico, Albuquerque

M-5 Rocky Mountain Alpine Project: Documenting agarics above treeline. C.L. CRIPPS (1), E. Horak (2), and T. Osmundson (1). (1) Montana State University, Bozeman, and (2) Geobotanic Institute ETH, Zurich, Switzerland

M-6 Diversity within Fusarium polyphialidicum. W.H. ELMER (1), D.M. Geiser (2), and R.M. Weseloh (1). (1) Connecticut Agricultural Experiment Station, New Haven, and (2) Pennsylvania State University, University Park, PA

M-7 The ropy-1 mutation disrupts cytoplasmic organization and intracellular motility in mature hyphae of Neurospora crassa. R.W. ROBERSON (1), M. Riquelme (2), D.P. McDaniel (1), and S. Bartnicki-Garcia (2). (1) Arizona State University, Tempe, and (2) University of California, Riverside

M-8 Species delineation in the chytrid genus Powellomyces. A.F. RAGSDALE, J.C. Chambers, P.M. Letcher, and M.J. Powell. University of Alabama, Tuscaloosa

M-9 Mycelial compatibility grouping of Sclerotinia minor populations from lettuce in central California. B.M. WU and K.V. Subbarao. University of California, Salinas

M-10 UV-B irradiation of mycelium of the insect pathogenic fungus Metarhizium anisopliae impairs catalase activity. G.U.L. BRAGA, C.D. Miller, S.-I. Kwon, D.W. Roberts, and A.J. Anderson. Utah State University, Logan

M-11 Phylogenetic distinction of Phomopsis isolates from cucurbits. L.A. CASTLEBURY, D.F. Farr, and A.Y. Rossman. USDA ARS, Beltsville MD

M-12 Optimizing polygalacturonic acid in NP-10 medium to improve Verticillium dahliae recovery from soil. R.G.B. KABIR and K.V. Subbarao. University of California, Salinas

M-13 Air quality in a science building. L.K. HAWKINS and E.A. Brantley. Pennsylvania State University, Mont Alto

M-14 Is there a pantropical freshwater ascomycota? C. A. SHEARER (1), J.L. Anderson (1), and C.M. Pringle (2). (1) University of Illinois, Urbana, and (2) University of Georgia, Athens

M-15 Evaluating management practices for log-grown shiitake production in midwestern agroforestry. J.N. BRUHN, J.D. Mihail, J.J. Wetteroff, Jr., and T.A. Clark. University of Missouri, Columbia

M-16 A new fructicolous trichocomaceous fungus Penicilliopsis pseudocordyceps, the teleomorph of Pseudocordyceps seminicola and P. clavariaeformis. H.-M. Hsieh and Y.-M. JU. Academia Sinica, Nankang, Taipei, Taiwan, Republic of China

M-17 A phylogenetic profile of some Clitopilus species (Agaricales) based on ITS rDNA sequences. T.J. BARONI (1), J-M. Moncalvo (2), and N.J. Krause (1). (1) State University of New York, Cortland, and (2) Duke University, Durham, NC

M-18 Molecular phylogeny of Stemphylium spp. based on ITS and glyceraldehyde-3-phosphate dehydrogenase gene sequences. M.P.S. CAMARA, N.R. O'Neill, and P. Van Berkum. USDA, Beltsville MD

M-19 Molecular variation among species of Verticillium. D.J. WEBER (1), O. Strunnikova (2), and M.A. Typas (3). (1) Brigham Young University, Provo UT; (2) Research Institute for Agricultural Microbiology, St. Petersburg, Russia; and (3) University of Athens, Athens, Greece

M-20 Induction of programmed cell death in MOLT-4 by antitumor 4-acetoxyscirpenediol from the fungus Paecilomyces tenuipes. H.W. KIM (1), D.H. Lee (1), and Y.H. Kim (2). (1) University of Seoul, Seoul, Korea, and (2) Chungnam National University, Taejon, Korea

M-21 The biocontrol technology transfer project. W. DERCKS, (1), A. Keuck (1), R. Schmatz (2), A. Orlicz-Luthardt (3), and F. Hennig (3). (1) FH Erfurt, Erfurt, Germany; (2) Thuringia State Agency of Agriculture, Erfurt-Kuehnhausen, Germany; and (3) Institute for Vegetable and Ornamental Crops, Erfurt-Kuehnhausen, Germany

M-22 German phytomedical society - Working group phytomedicine in horticulture: Project group medicinal plants and spices. W. DERCKS (1), U. Gaerber (2), and J. Gabler (3). (1) FH Erfurt, Erfurt, Germany; (2) Fed. Biol. Res. Centre for Agric. and Forestry, Kleinmachnow, Germany; and (3) Fed. Centre for Breeding Res. on Cultivated Plants, Aschersleben, Germany

M-23 Mushrooms and other fungi of Casuarina forests in the Hawaiian Islands. D.E. HEMMES, (1) and D.E. Desjardin (2). (1) University of Hawaii, Hilo, and (2) San Francisco State University, San Francisco

M-24 Morphological and cultural differentiation of described species of Alternaria from Poaceae. F.M. DUGAN (1) and T.L. Peever (2). (1) USDA-ARS, Pullman WA, and (2) Washington State University, Pullman

M-25 Synergistic bioconversion of oleic acid by Kluyveromyces marxianus and Pseudomonas sp. J.-H. Son, J.K. Huang, K.D. Wells, R.V. GESSNER, and K.C. Keudell. Western Illinois University, Macomb

M-26 Physiological specialization of Puccinia triticina on wheat in Nebraska during 1999 and 2000. J. SCHIMELFENIG, J.E. Watkins, P.S. Baenziger, and K.M. Eskridge. University of Nebraska, Lincoln

M-27 New reports and biogeography of poroid wood-decay fungi in North Carolina. L.F. GRAND and C.S. Vernia. North Carolina State University, Raleigh

M-28 Progress toward a comprehensive picture of tissue invasion in human mycoses. J.P. Ravishankar (1), L. Millward (1), C.M. Davis (1), D.J. Davis (2), S.D. Makselan (2), E. MACDONALD (1), and N.P. Money (1). (1) Miami University, Oxford OH, and (2) College of Mount St. Joseph, Cincinnati OH

M-29 Myxomycetes associated with alpine snowbank habitats in New Zealand. S.L. STEPHENSON (1) and P.R. Johnston (2). (1) Fairmont State College, Fairmont WV, (2) Landcare Research, Auckland, New Zealand

M-30 Within population genetic structure in Cantharellus formosus assessed with microsatellite loci. S.D. DUNHAM (1), T.E. Odell (2), and R.J. Molina (2). (1) Oregon State University, Corvallis, and (2) USDA Forest Service, Corvallis OR

M-31 Digital imaging: A promising tool for mushroom identification. C.B. Fischbein (1), G.M. Mueller (2), P.R. LEACOCK (2), M.S. Wahl, S. Michael (1), and S.E. Aks (3). (1) Illinois Poison Center, Chicago; (2) Field Museum of Natural History, Chicago, IL; and (3) Mercy Medical Center, Chicago, IL

M-32 Leptographium species: Tree pathogens, insect associates and agents of blue-stain. K. JACOBS (1) and M.J. Wingfield (2). (1) Agriculture and Agri-Food Canada, Ottawa, ON, Canada, and (2) University of Pretoria, Pretoria, South Africa

M-33 Assessing virulence and genetic variability of Sphaceloma manihoticola, causal agent of superelongation in cassava, in Brazil and Colombia, using RAMS and AFLP. E. ALVAREZ and J.F. Mejia. Centro Internacional de Agricultura Tropical, Cali, Colombia

M-34 Ultrastructural study on the early stage of cleistothecium development in Emericella nidulans. K.D. SOHN and K.S. Yoon. Kangwon University, Chunchon, South Korea

M-35 Lack of gene flow between populations of Rhizoctonia solani AG-3 from potato and tobacco suggests they constitute genetically distinct groups within AG-3. P.C. CERESINI (1), H.D. Shew (2), R. Vilgalys (3), T. James (3), and M.A. Cubeta (4). (1) UNESP, FEIS, Sao Paulo, Brazil; (2) North Carolina State University; (3) Duke University, Durham NC; and (4) North Carolina State University, Plymouth

M-36 How old is homothallism in Stemphylium? J. HARKNESS, P. Inderbitzin, and M.L. Berbee. University of British Columbia, Vancouver, BC, Canada

M-37 Controlling powdery mildew of roses using a plant extract and foliar fertilizers. E. ALVAREZ, J.L. Claroz, S.P. Cuero, and J.B. Loke. International Center for Tropical Agriculture-CIAT, Cali, Colombia

M-38 Literature survey of the tropical and subtropical Agariceae. K.R. PETERSON. Harvard University, Cambridge MA

M-39 Reduction of Botrytis cinerea sporulation by Clonostachys rosea on rose debris. M.A.B. Morandi, L.A. MAFFIA, E.S.G. Mizubuti, A.C. Alfenas, and J.G. Barbosa, UFV, Brazil

M-40 Stem rust, barberry, and the USDA: History and current status of the berberis quarantine. M. KENNEY. USDA, Jamaica, NY

M-41 Intraspecific variation of Pythium insidiosum based on ITS sequence analysis. A.M. SCHURKO (1), C.A. Levesque (2), N.L. Desaulniers (2), L. Mendoza (3), A.W. De Cock (4), and G.R. Klassen (1). (1) University of Manitoba, Winnipeg, MB, Canada; (2) Agriculture and Agri-Food Canada, Ottawa, ON, Canada; (3) Michigan State University, East Lansing; and (4) Centraal bureau Voor Schimmelcultures, Utrecht, Netherlands

M-42 The influence of guayule extracts on in vitro production of phaseolinone toxin by Macrophomina phaseolina. J.O. KUTI. Texas A&M University, Kingsville

M-43 Development and implementation of PCR assays for the detection of almond pathogens. C.J. BARNETT and J.J. Beck. Syngenta, Inc., Research Triangle Park NC

M-44 Agarics, ants, actinomycetes, and Escovopsis: a 50-million-year-old quadripartite symbiosis. C.R. CURRIE. University of Texas, Austin

M-45 Effect of competition and adverse culture conditions on aflatoxin production by Aspergillus flavus through successive generations. B.W. HORN and J.W. Dorner, USDA ARS, Dawson GA

M-46 PCR assay to detect Batrachochytrium on amphibians and in the environment. F.P. DASTOOR (1), S.L. Annis (1), P. Daszak (2), J.E. Longcore (1), M.S. Jones (3), and E. Muths (4). (1) University of Maine, Orono; (2) University of Georgia, Athens; (3) Colorado Div. of Wildlife, Fort Collins; and (4) USGS-BRD, Fort Collins, CO

M-47 Differences between Laetiporus huroniensis and L. conifericola, two species occurring on conifer in North America. M.T. Banik, J.A. MICALES, and H.H. Burdsall, Jr. USDA, Madison WI

M-48 Nutritional requirements of Hirsutella rhossiliensis.. X.Z. LIU and S.Y. Chen. University of Minnesota, Waseca

M-49 Rusts intercepted at U.S. ports of entry. M. KENNEY. USDA, Jamaica NY

M-50 An evaluation of the fungal ‘Morphospecies’ concept based on ribosomal DNA sequences. K.D. HYDE (1), D.C. LACAP, and E.C.Y. LIEW (1). (1) University of Hong Kong, Hong Kong, China, and (2) Ateneo de Manila University, Philippines

M-51 Biodiversity of nematophagous fungi in Hong Kong. C.K.M. TSUI, K.D. Hyde, and S.F. Chen. University of Hong Kong, Hong Kong, China

M-52 Functional analysis of two genes regulated by the PMK1 MAP kinase pathway in Magnaporthe grisea. C.Y. XUE and J.R. Xu. Purdue University, West Lafayette IN

M-53 Epichloe grass endophytes and their interaction with a symbiotic fly. A. LEUCHTMANN (1) and T.L. Bultman (2). (1) Geobotanisches Institut ETH, Zurich, Switzerland, and (2) Truman State University, Kirksville MO

M-54 A new species of chanterelle and the evolutionary relationships of chanterelles in the Pacific Northwest. S.M. Dunham, T.E. ODELL, and R. Molina. Oregon State University and USDA Forest Service, Corvallis, OR

M-55 Population structure of Israeli Venturia inaequalis. E.W.A. BOEHM (1), S. Freeman (2), E. Shabi (2) and T.J. Michailides (1). (1) University of California, Parlier, and (2) ARO, Bet Dagan, Israel

M-56 Species-specific detection of Monilinia fructicola from California stone fruits and flowers. E.W.A. BOEHM, Z. Ma, and T.J. Michailides. University of California, Parlier

M-57 Biochemical characterization of laccase isozymes of Ganoderma lucidum. E.M. Ko, Y.E. Leem, and H.T. CHOI. Kangwon University, South Korea

M-58 Comparitive diversity of tropical and sub-tropical entomopathogenic fungi. T.F.-N. KWONG. Department of Biology and Chemistry, City University of Hong Kong

S-1 Field screen of soybean cultivars for resistance and tolerance to Rotylenchulus reniformis. A. WESTPHAL (1) and A. Scott (2). (1) Texas Agricultural Extension Service, Weslaco, and (2) Rio Farms Inc., Monte Alto TX

S-2 A strategy for controlling plant parasitic nematodes with a modified Cry6A. K. HALE, J.Z. Wei, and R.V. Arioan. University of California, La Jolla

S-3 Biological soil suppression affects both sexes of Heterodera schachtii. X. GAO and J.O. Becker. University of California, Riverside

S-4 Biological control effectivity of Rhizobium etli G12 towards sedentary and migratory nematodes on various host plants. M. Mahdy, J. HALLMANN, and R. A. Sikora. Institut fur Pflanzenkrankheiten, Bonn, Germany

S-5 Endoparasitic fungal colonist of Rotylenchulus reniformis. K.S. MCLEAN, G.W. Lawrence, A.J. Palmateer, and G. Morgan-Jones. Auburn University, Auburn AL

S-6 Developmental temperature and length of Steinernema feltiae juveniles (Nematoda: Steinernematidae). S. Hazir (1), S. P. STOCK (2), H. K. Kaya (2), A. M. Koppenhofer (3) and N. Keskin (1). (1) University of Hacettepe, Beytepe, Ankara, Turkey; (2) University of California, Davis; and (3) Rutgers University. New Brunswick, NJ

S-7 Virulence of entomopathogenic nematodes to the pecan weevil, Curculio caryae, in the laboratory. D.I. SHAPIRO-ILAN. USDA ARS, Byron GA

S-8 The use of polyacrylamide gel electrophoresis of soluble proteins in the taxonomy of Egyptian heterorhabditid nematodes. M.M.M. ABD-ELGAWAD and M.A. Mohamed. National Research Center, Dokki, Giza, Egypt

S-9 Horizontal and vertical distribution of the reniform nematode. H.K. LEE and G.W. Lawrence. Mississippi State University, Mississippi State

S-10 Screening lectins for specific attachment to virus-vector Paratrichodorus anemones. R. Holeva (1), R. Neilson (1), Q. Chen (1), R. Curtis (2), and D.J.F. BROWN (1). (1)Scottish Crop Research Institute, Invergowrie, Dundee Scotland, and (2) IACR Rothamsted, Harpenden, Herts, England

S-11 The spread of soybean cyst nematode in Ontario, 1987-2000. A. TENUTA (1), Tom Welacky (2), and T. Anderson (2). (1) Ontario Ministry of Agriculture, Food and Rural Affairs, Ridgetown College, Ridgetown, ON, Canada, and (2) Agriculture and Agri-Food Canada, Harrow, ON

S-12 Distribution of soybean cyst nematode races in Illinois. S.R. STETINA (1), J.D. Vest (2), and J.S. Russin (2). (1) University of Minnesota, Lamberton, and (2) Southern Illinois University, Carbondale

S-13 Using soil electrical conductivity to predict the distribution of cotton nematodes. J.D. MUELLER, A. Khalilian, F. J. Wolak, and Y. Han. Clemson University, Clemson SC

S-14 Nematodes in wetland soils of North Carolina. D.A. NEHER (1), M.E. Barbercheck (2), O. Anas (2), and S. El-Allaf (2). (1) University of Toledo, Toledo OH, and (2) North Carolina State University, Raleigh

S-15 A new species of Oscheius (Nematoda: Rhabditida) from Formosan termites (Coptotermes formosanus) and a 28SrDNA molecular phylogeny with related taxa. L.K. CARTA (1), K. Morris (2), and W.K. Thomas (2). (1) USDA-ARS, Beltsville MD, and (2) University of Missouri, Kansas City

S-16 Red food coloring stain: A new, safer procedure for staining nematodes in roots and egg masses on root surfaces. J.A. THIES. USDA ARS, Charleston SC

S-17 Phylogenetic analyses of Meloidogyne SSU rDNA. I.T. DE LEY (1), P. De Ley (1), A. Vierstraete (2), G. Karssen (3), M. Moens (4) and J. Vanfleteren (2). (1) University California, Riverside; (2) University Gent, Gent, Belgium; (3) Plant Protection Service, Wageningen, Netherlands; and (4) Agric. Res. Center, Merelbeke, Belgium

S-18 Species of predatory soil nematodes (Mononchida) from Japan. Z. KHAN and M. Araki. Nat'l Inst. of Agro-Envir. Sciences, Tsukuba, Ibaraki, Japan

S-19 A fungal-feeding nematode in the family Tylenchidae from decomposing rice straw. H. OKADA. Tohoku National Agricultural Experiment Station, Fukushima, Japan

S-20 Optimizing polygalacturonic acid in NP-10 medium to improve Verticillium dahliae recovery from soil. Z. KABIR, R.G. Bhat, and K.V. Subbarao. University of California, Salinas

S-21 Inter-population heterogeneity in Xiphinema diversicaudatum as indicated by stable isotope analyses and 18S sequence data. R. Neilson and D.J.F. BROWN. Scottish Crop Research Institute, Dundee, Scotland

S-22 Digital databases for teaching, research, and extension. U. ZUNKE (1) and J.D. Eisenback (2). (1) University of Hamburg, Hamburg, Germany, and (2) Virginia Tech, Blacksburg

S-23 Molecular diagnostics of virus-vector trichodorid nematodes and their associated Tobacco rattle virus. K. BOUTSIKA, V.C. Blok, M.S. Phillips, S.A. MacFarlane, and D.J.F. Brown. Scottish Crop Research Institute, Invergowrie, Dundee, Scotland.

S-24 Molecular, morphological and thermal characters of Pratylenchus species (Nematoda: Tylenchida) and relatives using the D3 segment of the nuclear LS 28SrRNA gene. L.K. CARTA, A.M. Skantar, and Z.A. Handoo. USDA ARS, Beltsville MD

S-25 All-taxa biodiversity inventory of Great Smoky Mountains National Park. E. C. BERNARD. University of Tennessee, Knoxville

S-26 Meloidogyne partityla: An emerging nematode pest of pecan in New Mexico. S.H. THOMAS, J.M. Fuchs, and A.L. Jacobson. New Mexico State University, Las Cruces

S-27 Host status and susceptibility of Lisianthus to three Meloidogyne species. A.T. PLOEG. University of California, Riverside

S-28 A putative heat-stable nematode resistance gene Mi-9 from Lycopersicon peruvianum is constitutively expressed in leaves and roots. J.C. VEREMIS, I. Kaloshian and P.A. Roberts. University of California, Riverside

S-29 Development of molecular markers for resistance to clover root-knot nematode. C.F. MERCER, B. Barrett, A.G. Griffiths, D.R. Woodfield, and K. Moore. AgResearch Grasslands, Palmerston North, New Zealand

S-30 Comparison of two methods to evaluate soybean for resistance to soybean cyst nematode. L.D.YOUNG. USDA ARS, Stoneville MS

S-31 Field response of mid-south cotton varieties to the reniform nematode. G.W. LAWRENCE, K.S. McLean (2), H.K. Lee (1), and W. Price (1). (1), Mississippi State University, Mississippi State, and (2) Auburn University, Auburn, AL

S-32 Reaction of wheat cultivars to Anguina tritici. S.A. Anwar (1), M.V. MCKENRY (1), A. Riaz (2), and M.S.A. Khan (2). (1) University of California, Riverside, and (2) U.A. Agriculture, Rawalpindi, Pakistan