Abstracts, The Canadian Phytopathological Society annual meeting, London, Ontario, 2001

Abstract

Transformation of apple for enhanced resistance to fire blight. M. Afunian, P.H. Goodwin, and D. Hunter. Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada; and (D.H.) Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, Vineland Station, ON L0R 2E0, Canada. Aerobiology of Uncinula necator on grapes: relationship between air-borne conidia and disease development. R. Bacon, B. Talbot, and O. Carisse. Horticultural Research and Development Centre, Agriculture and Agri-Food Canada, 430 Gouin Boulevard, Saint-Jean-sur-Richelieu, QC J3B 3E6, Canada; and (B.T.) Département de biologie, Universitéde Sherbrooke, 2500 Université, Sherbrooke, QC J1K 2R1, Canada. Geldanamycin producing strains as biocontrol agents against common scab of potato. J. Beauséjour, S. Agbessi, and C. Beaulieu. Centre d’étude et de valorisation de la diversitémicrobienne, Département de biologie, Universitéde Sherbrooke, Sherbrooke, QC J1K 2R1, Canada. Survival of black pepper plants in soil infected with Fusarium solani f. sp. piperis and amended with extracts or residues of Piper aduncum. R.L. Benchimol, J.C. Sutton, C.N. Bastos, and M. Dias-Filho. Empresa Brasileira de Pesquisas Agropecuaria Amazônia Oriental, C.P. 48, Belém, PA, Brazil; (J.C.S.) Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada; and (C.N.B.) CEPLAC-SUPOR, C.P. 1801, Belém, PA, Brazil. Localization of hydrogen peroxide in the interaction of Cladosporium fulvumand tomato.S. Borden and V.J. Higgins. Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, ON M5S 3B2, Canada. Epidemiology of fire blight in raspberry. P.G. Braun and P.D. Hildebrand. Atlantic Food and Horticulture Research Centre, Agriculture and Agri-Food Canada, 32 Main Street, Kentville, NS B4N 1J5, Canada. Detection of quantitative trait loci for common bunt resistance. W. Cao, S. Fox, and R. Knox. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, Central Experimental Farm, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada; (S.F.) Crop Development Centre, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada; and (R.K.) Semiarid Prairie Agricultural Research Centre, Agriculture and Agri-Food Canada, P.O. Box 1030, Swift Current, SK S9H 3X2, Canada. Evaluation of caulosphere microorganisms for the biological control of Nectria apple cankers. O. Carisse, A. Ouimet, and J. Bernier. Horticultural Research and Development Centre, Agriculture and Agri-Food Canada, 430 Gouin Boulevard, Saint-Jeansur- Richelieu, QC J3B 3E6, Canada. Inhibition of Venturia inaequalis ascospore production by Microsphaeropsis ochracea as a function of pseudothecial development. O. Carisse and D. Rolland. Horticultural Research and Development Centre, Agriculture and Agri-Food Canada, 430 Gouin Boulevard, Saint-Jean-sur-Richelieu, QC J3B 3E6, Canada. Relationship of bean seed infection with anthracnose to disease development and seed microflora. K.F. Chang, Y. Yang, R. Conner, S.F. Hwang, and R.J. Howard. Crop Diversification Centre South, SS4, Brooks, AB T1R 1E6, Canada; (Y.Y.) Crop Protection Institute, Tianjin, China; (R.C.) Cereal Research Centre, Agriculture and Agri-Food Canada, Morden, MB R6M 1Y5, Canada; and (S.F.H.) Alberta Research Council, Vegreville, AB T9C 1T4, Canada. Mating type genes in Colletotrichum graminicola from Agrostis palustris. F. Chen, T. Hsiang, and P.H. Goodwin. Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada. Use of green fluorescent protein to study the infection of plants by Colletotrichum destructivum and Colletotrichum orbiculare. N. Chen, P.H. Goodwin, and T. Hsiang. Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada. A comparative study on the execution of hypersensitive cell death during host and nonhost disease resistance. R. Christopher- Kozjan and M.C. Heath. Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, ON M5S 3B2, Canada. Dye injection for predicting pesticide movement in soil beds. A.S. Csinos, J.E. Laska, and S. Childers. Department of Plant Pathology, University of Georgia, Tifton, GA 31794, U.S.A.; and (S.C.) Dow AgroSciences, Indianapolis, IN 46268-1054, U.S.A. Distribution and characterization of xanthomonads causing bacterial-spot disease on tomato in southern Ontario in 2000. D.A. Cuppels and T. Ainsworth. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada. Expression of round-leaved mallow (Malva pusilla) glutathione S-transferases following infection by Colletotrichum gloeosporioides f. sp. malvae. J.D. Dean, P.H. Goodwin, and T. Hsiang. Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada. Hypovirulence associated double-stranded RNA in Sclerotinia homeocarpa. F. Deng and G.J. Boland. Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada. Production of an antifungal compound by Cylindrocladium floridanum inhibitory to Trichoderma harzianum. M.T. Dumas, N.W. Boyonoski, and G. Halicki Hayden. Canadian Forest Service, Great Lakes Forestry Centre, P.O. Box 490, Sault Saint Marie, ON P6A 5M7, Canada; and (G.H.H.) Ontario Ministry of Natural Resources, Ontario Forest Research Institute, 1235 Queen Street East, Sault Saint Marie, ON P6A 2E5, Canada. Forecasting and control of alternaria black spot of canola. I.R. Evans and A. Fedko. Alberta Agriculture, 6903–116th Street, Edmonton, AB T6H 4P2, Canada. Leaf-spot diseases of spring wheat in southern Manitoba farm fields under conventional and conservation tillage. J. Gilbert and S.M. Woods. Cereal Research Centre, Agriculture and Agri- Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. A combination of glyphosate and Alternaria cirsinoxia for control of Canada thistle (Cirsium arvense). S. Green and K.L. Bailey. Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada. Potential pathogenic fungi on Orobanche spp. in Jordan. K.M. Hameed and A.-S. Zaineb. Department of Applied Biological Sciences, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan. Nonpathogenic Fusarium oxysporum isolates induce systemic resistance and defense responses against infection by F. oxysporum f. sp. asparagi in asparagus. C.Y. He, T. Hsiang, and D.J. Wolyn. Department of Plant Agriculture, University of Guelph, Guelph, ON N1G 2W1, Canada; and (T.H.) Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada. Method of seedbed preparation affects establishment and stand productivity of alfalfa. S.F. Hwang, B.D. Gossen, G.D. Turnbull, K.F. Chang, and R.J. Howard. Alberta Research Council, Vegreville, AB T9C 1T4, Canada; (B.D.G.) Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada; and (K.F.C., R.J.H.) Crop Diversification Centre South, SS4, Brooks, AB T1R 1E6, Canada. Management of onion white rot on organic soils with soilapplied Allium products. M.D.L.A. Jaime, T. Hsiang, and M.R. McDonald. Department of Plant Agriculture, University of Guelph, Guelph, ON N1G 2W1, Canada; and (T.H.) Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada. Effect of a vesicular arbuscular mycorrhizal fungus on white rot of onions caused by Sclerotium cepivorum Berk. M.D.L.A. Jaime, T. Hsiang, and M.R. McDonald. Department of Plant Agriculture, University of Guelph, Guelph, ON N1G 2W1, Canada; and (T.H.) Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada. Influence of potential rotation crops on Rhizoctonia solani, the causal agent of black scurf of potato. W.H. Johnston and D. Errampalli. Crops and Livestock Research Centre, Agriculture and Agri-Food Canada, Charlottetown, PE C1A 78M8, Canada; and (D.E.) Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, Vineland Station, ON L0R 2E0, Canada. Functional genomics of Phytophthora–plant interactions. S. Kamoun. Department of Plant Pathology, The Ohio State University, Ohio Agricultural Research and Development Center, Wooster, OH 44691, U.S.A. Increase in fruit yield of greenhouse grown cucumber plants inoculated with Fusarium oxysporum f. sp. radicis cucumerinum by composted animal waste. T. Kannangara, R.S. Utkhede, and N.K. Patni. Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, P.O. Box 1000, Agassiz, BC V0M 1A0, Canada. Virulence of isolates of Leptosphaeria maculans from western Canada on Brassica napus differentials. M. Keri, H.R. Kutcher, and S.R. Rimmer. Agriculture and Agri-Food Canada, Box 1240, Melfort, SK S0E 1A0, Canada; and (S.R.R.) Agriculture and Agri- Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada. The infection process of Colletotrichum graminicola on turfgrass leaves. A. Khan and T. Hsiang. Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada. Comparative assessment of temporal relationships between inoculum and environmental parameters and their influence on sclerotinia rot of carrot [Sclerotinia sclerotiorum(Lib.) de Bary]. C. Kora, M.R. McDonald, and G.J. Boland. Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada; and (M.R.M.) Department of Plant Agriculture, University of Guelph, Guelph, ON N1G 2W1, Canada. Artificial neural networks to discriminate five diseases of potato tubers using solid-phase microextraction fibers to trap and gas chromatography to fingerprint volatiles. A.C. Kushalappa, L.H. Lui, C.R. Chen, and B. Lee. Department of Plant Science and (C.R.C.) Department of Food Science and Agriculture Chemistry, Macdonald Campus, McGill University, 21111 Lakeshore Road, Sainte-Anne de Bellevue, QC H9X 3V9, Canada; and (B.L.) Food Research and Development Centre, Agriculture and Agri-Food Canada, 3600 Casavant Boulevard West, Saint- Hyacinthe, QC J2S 8E3, Canada. Spray application methods to maximize sclerotinia stem rot control in canola with foliar fungicide. H.R. Kutcher and T.M. Wolf. Agriculture and Agri-Food Canada, Box 1240, Melfort, SK S0E 1A0, Canada; and (T.M.W.) Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada. Molecular phylogeny and detection of Synchytrium endobioticum, the causal agent of potato wart. C.A. Lévesque, S.N. de Jong, L.J. Ward, and S.H. De Boer. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada; and (L.J.W., S.H.D.B.) Canadian Food Inspection Agency, Centre for Animal and Plant Health, 93 Mount Edward Road, Charlottetown, PE C1A 5T1, Canada. Effectiveness of Clonostachys rosea against Botrytis cinerea in stems of hydroponic greenhouse tomato. W. Liu, J.C. Sutton, R. Huang, and N. Owen-Going. Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada; and (R.H.) AMCO Farms Inc., Leamington, ON N8H 3W1, Canada. Surface response models to predict potato tuber infection by Fusarium sambucinumfrom duration of wetness and temperature, and dry rot lesion expansion from storage time and temperature. L.H. Lui and A.C. Kushalappa. Department of Plant Science, McGill University, 21111 Lakeshore Road, Sainte-Anne de Bellevue, QC H9X 3V9, Canada. Genetic and physical mapping of the Avr1a avirulence gene in Phytophthora sojae. T. MacGregor, Y. Cui, M. Gijzen, B. Tyler, and M. Bhattacharyya. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada; (B.T.) Department of Plant Pathology, University of California, Davis, CA 95616, U.S.A.; and (M.B.) G303 Agronomy Hall, Iowa State University, Ames, IA 50011–1010, U.S.A. Development of methods for screening bean (Phaseolus vulgaris L.) for resistance to white mold [Sclerotinia sclerotiorum (Lib.) de Bary]. A. Madariaga, R. Hall, G.J. Boland, K.P. Pauls, T.E. Michaels, and R.A. Robinson. Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada; and (K.P.P., T.E.M., R.A.R.) Department of Plant Agriculture, University of Guelph, Guelph, ON N1G 2W1, Canada. Inheritance of avirulence in the wheat leaf rust fungus Puccinia triticina. B. McCallum and B. Mulock. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. The reaction of 28 wheat cultivars and lines to infection with Claviceps purpurea. J. Menzies, C. Saramaga, and F. Matheson. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Suppressive soils to potato silver scurf: selection and characterization. M. Michaud, C. Martinez, R.R. Bélanger, and R.J. Tweddell. Horticultural Research Center, UniversitéLaval, Sainte-Foy, QC G1K 7P4, Canada. Localization of mRNAs encoding cell wall degrading enzymes in wheat infected with wheat streak mosaic virus. J. Myslik and A. Nassuth. Department of Botany, University of Guelph, Guelph, ON N1G 2W1, Canada. Gene expression during different growth phases of the vascular wilt pathogen Verticillium dahliae. M.J. Neumann and K.F. Dobinson. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada. Possible evolution of tuber ringspot necrosis strains (PVYNTN) from regional prevailing strains of tobacco veinal necrosis (PVYN). X. Nie and R.P. Singh. PRC, Agriculture and Agri-Food Canada, P.O. Box 20280, Fredericton, NB E3B 4Z7, Canada. Genomic efforts to study the interactions between Fusarium graminearum and its cereal hosts. T. Ouellet, L. Harris, and N. Tinker. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada. Impact of leaf wetness frequency and duration on the accuracy of Venturia inaequalis ascospore maturation models. V. Philion and O. Carisse. Institut de recherche et de développement en agroenvironnement, Saint-Hyacinthe, QC J2S 7B8, Canada; and (O.C.) Horticultural Research and Development Centre, Agriculture and Agri-Food Canada, 430 Gouin Boulevard, Saint- Jean-sur-Richelieu, QC J3B 3E6, Canada. Breaking the linkage between the Wsm1 gene for resistance to wheat streak mosaic virus and the J15 (SCAR) DNA marker: evidence for unexpected recombination between alien and wheat chromatin. M. Pradhan and S. Haber. Department of Plant Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada; and (S.H.) Cereal Research Centre, Agriculture and Agri- Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Fusarium wilt of field-grown muskmelon in British Columbia. Z.K. Punja, M. Parker, and J.F. Elmhirst. Department of Biological Sciences, Centre for Environmental Biology, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada; and (J.F.E.) British Columbia Ministry of Agriculture and Food, 1767 Angus Campbell Road, Abbotsford, BC V3G 2M3, Canada. Host-specific phytotoxic protein and development of alternaria leaf spot on American ginseng. H. Quayyum, M. Gijzen, and J.A. Traquair. Department of Plant Sciences, University of Western Ontario, London, ON N6A 5B7, Canada; and (M.G., J.A.T.) Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada. Functional genomics of Phytophthora sojae: identification of a necrosis-inducing peptide by a heterologous expression assay. D. Qutob, M. Gijzen, and S. Kamoun. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada; (D.Q.) Department of Microbiology and Immunology, University of Western Ontario, London, ON N6A 5C1, Canada; and (S.K.) Department of Plant Pathology, The Ohio State University, Ohio Agricultural Research and Development Center, Wooster, OH 44691, U.S.A. Molecular markers for race T33 of loose smut in durum wheat. H.S. Randhawa and S.L. Fox. Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada. Pasmo disease in flax: impact on yield and potential control methods. K.Y. Rashid. Cereal Research Centre, Agriculture and Agri-Food Canada, Morden, MB R6M 1Y5, Canada. Molecular analysis provides evidence for sexual reproduction of Mycosphaerella graminicola in Saskatchewan. M. Razavi and G.R. Hughes. Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada. The relationship between molecular and pathogenic variability in a population of Mycosphaerella graminicola, cause of Septoria tritici leaf blotch of wheat. M. Razavi and G.R. Hughes. Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada. A protocol for the extraction of DNA from thick-walled fungal spores residing in soil. R.D. Reeleder and W. Hickey. Southern Crop Protection and Food Research Centre, Agriculture and Agri- Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada; and (W.H.) Department of Soil Science, University of Wisconsin– Madison, Madison, WI 53706, U.S.A. Neem tree products and their potential as organic pesticides. E. Riga, P.A. Abbasi, K.L. Conn, and G. Lazarovits. Southern Crop Protection and Food Research Centre, Agriculture and Agri- Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada. Potential for biocontrol of Sclerotinia sclerotiorum on canola. S. Savchuk, W.G.D. Fernando, and P.S. Parks. Department of Plant Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada. Cold tolerance of mycelium from four different genotypes of Phytophthora infestans. R.S. Shaw and W.W. Kirk. Department of Botany and Plant Pathology, Michigan State University, East Lansing, MI 48824, U.S.A. Use of glacial marine clay in integrated pest management of fruit crops. P.L. Sholberg and J. Boulé. Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC V0H 1Z0, Canada. Acetic acid vapour: treatment procedures and possible uses in agriculture. P.L. Sholberg, T. Shephard, and L. Moyls. Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC V0H 1Z0, Canada. Elevated pseudomonad numbers in the rhizosphere of two year continuous wheat compared with wheat following breakcrops. B.J. Smith and J.A. Kirkegaard. Commonwealth Scientific and Industrial Research Organisation, Plant Industry, P.O. Box 1600, ACT 2601, Australia. Reduction of potato scab in four Ontario fields with ammonium lignosulfonate soil amendment. N. Soltani, P.A. Abbasi, K.L. Conn, E. Riga, and G. Lazarovits. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada. Effect of temperature on early stem colonization in Verticillium dahliae infected tomato. A. Stankiewicz and J. Robb. Department of Molecular Biology and Genetics, University of Guelph, Guelph, ON N1G 2W1, Canada. Pesticide use and world food production: risks and benefits. G.R. Stephenson. Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada. Reverse-transcription polymerase chain reaction based detection of rupestris stem pitting associated virus within field- grown grapevines throughout the year. S. Stewart and A. Nassuth. Department of Botany, University of Guelph, 50 Stone Road East, Guelph, ON N1G 2W1, Canada. Comparative virulence of chlorosis-inducing races of Pyrenophora tritici-repentis. S.E. Strelkov, L. Lamari, R. Sayoud, and R.B. Smith. Department of Plant Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada. Virulence analysis of stripe rust (Puccinia striiformis) of wheat and barley in western Canada. H. Su, R.L. Conner, R.J. Graf, and A.D. Kuzyk. Crop Science Section, Lethbridge Research Centre, Lethbridge, AB T1J 4B1, Canada; and (R.L.C.) Cereal Research Centre, Agriculture and Agri-Food Canada, Morden, MB R6M 1Y5, Canada. Volatile fatty acids in liquid swine manure kill Verticillium dahliae microsclerotia. M. Tenuta, K.L. Conn, and G. Lazarovits. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada. Impact of agriculture on soil biology: emerging issues. E. Topp. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada. Relationships between Xanthomonas campestris pv. vitians population size, bacterial leaf spot of lettuce severity, and leaf age. V. Toussaint, C.E. Morris, and O. Carisse. Department of Plant Science, McGill University, 21111 Lakeshore, Sainte-Anne de Bellevue, QC H9X 3V9, Canada; (C.E.M.) Institut national de la recherche agronomique d’Avignon, B.P. 94, 84143 Montfavet CEDEX, France; and (O.C.) Horticultural Research and Development Centre, Agriculture and Agri-Food Canada, 430 Gouin Boulevard, Saint-Jean-sur-Richelieu, QC J3B 3E6, Canada. Evaluation of different methods to test fungicide resistance in Botrytis squamosa. M. Tremblay, B.G. Talbot, and O. Carisse. Horticultural Research and Development Centre, Agriculture and Agri-Food Canada, 430 Gouin Boulevard, Saint-Jean-sur- Richelieu, QC J3B 3E6, Canada; and (B.G.T.) Département de biologie, Universitéde Sherbrooke, 2500 Université, Sherbrooke, QC J1K 2R1, Canada. Environmental losses and human exposure to agricultural chemicals. H.M. van Es. Department of Crop and Soil Sciences, Cornell University, Ithaca, NY 14853-1901, U.S.A. Spatial analysis of white mold infection in soybean using canopy reflectance. B. Vigier. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON K1A OC6, Canada. Inoculum production and biology of the fungal pathogen Valdensinia heterodoxa, a potential biological control agent for salal. S. Vogelgsang, S.F. Shamoun, and R.E. Countess. Canadian Forest Service, Pacific Forestry Centre, 506 W Burnside Road, Victoria, BC V8Z 1M5, Canada. Soil-drench treatment with Trichoderma and fungicides to control fusarium root rot of coneflower. H. Wang, K.F. Chang, S.F. Hwang, G.D. Turnbull, and R.J. Howard. Alberta Research Council, Vegreville, AB T9C 1T4, Canada; and (K.F.C., R.J.H.) Crop Diversification Centre South, SS4, Brooks, AB T1R 1E6, Canada. Policy options to account for the environmental costs and benefits of agriculture. A. Weersink. Department of Agricultural Economics and Business, University of Guelph, Guelph, ON N1G 2W1, Canada. Dependency of barley cultivars on arbuscular mycorrhizal fungi. L.J.C. Xavier, S.M. Boyetchko, and D.A. Derksen. Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada; and (D.A.D.) Agriculture and Agri-Food Canada, Box 1000A, R.R. No. 3, Brandon, MB R7A 5Y3, Canada. The challenges and rewards of quality assurance at Philom Bios. J. Xie, M. Leggett, G. Holloway, A. Yuskiw, and T. Pike. Philom Bios, No. 318, 111 Research Drive, Innovation Place, Saskatoon, SK S7N 3R2, Canada. Biological control of root rots in field pea. A.G. Xue. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, K.W. Neatby Building, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada. Genetic and chemical control of rhizoctonia seedling blight of white bean (Phaseolus vulgaris). K. Yasmin and R. Hall. Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada. Transformation of Botrytis cinerea with a green fluorescent protein gene. H. Yu, X.Z. Li, J.C. Sutton, T. Zhou, Y.D. Wei, and J. Gong. Food Research Program, Agriculture and Agri-Food Canada, Guelph, ON N1G 5C9, Canada; (J.C.S.) Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada; and (Y.D.W.) University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada. Spore release and dispersal gradients of Mycosphaerella pinodes in field pea. J.X. Zhang, W.G.D. Fernando, and A. Xue. Department of Plant Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada; and (A.X.) Cereal Research Centre, Agriculture and Agri-Food Canada, Morden, MB R6M 1Y5, Canada. Random amplified polymorphic DNA analysis of dedikaryotized isolates of Typhula phacorrhiza. S.G. Zhao, W.Z. Liu, and T. Hsiang. Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada.