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Nelson, Eric Bronson
Cornell Faculty Member
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Positions
- Professor, Plant Pathology and Plant-Microbe Biology (PPPMB), College of Agriculture and Life Sciences (CALS)
The focus of my program is on disease ecology in both agricultural and natural ecosystems, with emphasis on the soil ecology of oomycete pathogens.
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Affiliations
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- David R. Atkinson Center for a Sustainable Future (ACSF) Faculty Fellow
Research
research overview
- My research program focuses on the ecology of plant pathogens and the diseases they cause in both agricultural and natural ecosystems. The goal of our work in natural ecosystems is to understand the role of soil pathogens in plant community dynamics, especially plant invasions. We take advantage of plant-soil feedback theory to serve as a framework for our specific studies. Currently, my lab is exploring the ecology of oomycete pathogens in wetland ecosystems invaded by Phragmites australis and the potential mechanisms by which these pathogens spillback to native plants, reducing their competitiveness, and facilitating the success of invasive species. We are also exploring ways in which invading plants interact with pathogen-suppressive rhizosphere microbial communities to promote invasive success in non-native ranges. The goal of our work in agricultural systems is to understand the mechanisms by which organic soil amendments suppress soilborne diseases caused by oomycetes in the genus Pythium.
research activities
principal investigator on
co-principal investigator on
area(s) of concentration/expertise
other area(s) of concentration/expertise
- Invasive Plant Species, Fungal Ecology
keywords
- Disease Ecology
- Invasive Species
- Microbial Ecology
- Soil Biology
submitted impact statement
Publications
individual publications
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academic article
- Microbial-induced carbon competition in the spermosphere leads to plant pathogen and disease suppression in a municipal biosolids compost. Phytopathology. 102:588-596. 2012
- Reduction of weed seedling emergence by pathogens following incorporation of green crop residue.. Weed Research. 52:467-477. 2012
- Seed-colonizing bacterial communities associated with the suppression of Pythium seedling disease in a municipal biosolids compost. Phytopathology. 102:478-489. 2012
- Fungus gnat feeding and mechanical wounding inhibit Pythium aphanidermatum infection of geranium seedlings. . Phytopathology. 99:1421-1428. 2009
- Differential interference with Pythium ultimum sporangium activation and germination by Enterobacter cloacae in the corn and cucumber spermospheres. Applied and Environmental Microbiology. 74:4285-4291. 2008
- Seed-colonizing microbes from municipal biosolids compost suppress Pythium ultimum damping-off on different plant species. Phytopathology. 98:1012-1018. 2008
- Temporal release of seed exudate fatty acids and their sugar-regulated degradation by Enterobacter cloacae. Applied and Environmental Microbiology. 74:4292-4299. 2008
- Relationships among soilborne bean seedling diseases, Lablab purpureus L. and maize stover residue management, bean insect pests, and soil characteristics in Trans Nzoia district, Kenya . Applied Soil Ecology. 35:107-119. 2007
- Diversity of Peronosporomycete (oomycete) communities associated with the rhizosphere of different plant species. Microbial Ecology. 51:36-50. 2006
- Bacterial communities associated with creeping bentgrass in soil and sand root zones. USGA Turfgrass and Environmental Research Online (TERO). 3:1-19. 2005
- Diversity and biology of the dollar spot organism, Sclerotinia homoeocarpa, and its implications. USGA Turfgrass and Environmental Research Online (TERO). 4:1-9. 2005
- Phylogenetic and morphological analyses of Pythium graminicola and related species. Journal of General Plant Pathology. 71. 2005
- Biological control of soilborne diseases: Important concepts from a model system. Acta Horticulturae. 635:115-130. 2004
- Microbial dynamics and interactions in the spermosphere. Annual Review of Phytopathology. 42:271-309. 2004
- Rootstock genotype and orchard replant position rather than soil fumigation or compost amendment determine tree growth and rhizosphere bacterial community composition in an apple replant soil. Plant and Soil. 264:247-260. 2004
- Compost-induced suppression of Pythium damping-off is mediated by fatty acid metabolizing seed colonizing microbial communities. Applied and Environmental Microbiology. 69:452-460. 2003
- Differential inactivation of seed exudate stimulants of Pythium ultimum sporangium germination by Enterobacter cloacae influences biological control efficacy on different plant species. Applied and Environmental Microbiology. 69:1114-1120. 2003
- Abstract: Evaluation of turfgrass phytonematode population distributions on a New York State putting green. Phytopathology. 91. 2001
- Fatty acid competition as a mechanism by which Enterobacter cloacae suppresses Pythium ultimum sporangium germination and damping-off. Applied and Environmental Microbiology. 66:5340-5347. 2000
- Methods for assessing the structure of soil microbial communities. Applied Soil Ecology. 15:25-36. 2000
- Differential suppression of cucumber damping-off caused by Pythium aphanidermatum, P. irregulare, and P. myriotylum in composts at different temperatures. Plant Disease. 83:356-360. 1999
- Ecological studies of transformed Trichoderma harzianum strain 1295-22 in the rhizosphere and on the phylloplane of creeping bentgrass. Phytopathology. 88:129-136. 1998
- Factors affecting colonization of germinating seeds by Enterobacter cloacae. Microbial Ecology. 36:101-110. 1998
- Inactivation of seed exudate stimulants of Pythium ultimum sporangium germination by biocontrol strains of Enterobacter cloacae and other seed-associated bacteria. Soil Biology and Biochemistry. 30:183-192. 1998
- Presence of Pythium species in Gypsophila nurseries in Israel. Dappe Meda 2. October:68-69. 1998
- Extracted fatty acids from Gossypium hirsutum stimulatory to the seed rotting fungus, Pythium ultimum. Phytochemistry. 46:77-82. 1997
- Improving the biocontrol efficacy of Trichoderma harzianum 1295-22 for controlling foliar phases of turfgrass diseases by spray applications. Plant Disease. 81:1132-1138. 1997
- Microbial inoculants for the control of turfgrass diseases. International Turfgrass Society Research Journal. 8 (Part 1):791-811. 1997
- Biological control of turfgrass diseases with a rhizosphere competent strain of Trichoderma harzianum. Plant Disease. 80:736-741. 1996
- Control of turfgrass diseases with a rhizosphere competent strain of Trichoderma harzianum. Plant Disease. 80:736-741. 1996
- Microbial properties of composts that suppress damping-off and root rot of creeping bentgrass caused by Pythium graminicola. Applied and Environmental Microbiology. 62:1550-1557. 1996
- Nutritional factors affecting responses of sporangia of Pythium ultimum to germination stimulants. Phytopathology. 84:677-683. 1994
- Role of colonization in biocontrol: Studies with Enterobacter cloacae. Plant Science. 101:83-89. 1994
- A miniaturized and rapid bioassay for the selection of soil bacteria suppressive to Pythium blight of turfgrasses. Phytopathology. 82:206-210. 1992
- Molecular approaches for understanding biological control mechanisms in bacteria: Studies of the interaction of Enterobacter cloacae with Pythium ultimum. Canadian Journal of Plant Pathology. 14:106-114. 1992
- Suppression of dollar spot on creeping bentgrass/annual bluegrass turf with top-dressings amended with composts and organic fertilizers. Plant Disease. 76:954-958. 1992
- Identification and comparative pathogenicity of Pythium spp. from roots and crowns of turfgrasses exhibiting symptoms of root rot. Phytopathology. 81:1529-1536. 1991
- Introduction and establishment of strains of Enterobacter cloacae in golf course turf for the biological control of Dollar Spot. Plant Disease. 75:510-514. 1991
- Exudate molecules initiating fungal responses to seeds and roots. Plant and Soil. 129:61-73. 1990
- Comparative germination of culture-produced and plant-produced sporangia of Pythium ultimum in response to seed exudates and exudate components. Phytopathology. 79:1009-1013. 1989
- Biological control of Pythium seed rot and pre-emergence damping-off of cotton with Enterobacter cloacae and Erwinina herbicola applied as seed treatments. Plant Disease. 72:140-142. 1988
- Enhancement of Trichoderma-induced biological control of Pythium seed rot and pre-emergence damping-off of peas. Soil Biology and Biochemistry. 20:145-150. 1988
- Rapid germination of sporangia of Pythium species in response to volatiles from germinating seeds. Phytopathology. 77:1108-1112. 1987
- Attachment of Enterobacter cloacae to hyphae of Pythium ultimum: Possible role in the biological control of Pythium pre-emergence damping-off. Phytopathology. 76:327-335. 1986
- Colonization of the rhizosphere by biological control agents applied to seeds. Phytopathology. 76:60-65. 1986
- Effects of fungal antagonists and compost age on suppression of Rhizoctonia damping-off in container media amended with composted hardwood bark. Phytopathology. 73:1357-1462. 1983
- Fungal populations in container media amended with composted hardwood bark suppressive and conductive to Rhizoctonia damping-off. Phytopathology. 73:1450-1456. 1983
- The role of microorganisms in the suppression of Rhizoctonia solani in composted hardwood bark container media. Phytopathology. 73:274-278. 1983
- Factors affecting suppression of Rhizoctonia solani in container media. Phytopathology. 72:275-279. 1982
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article
- Non-target effects of fungicide applications on microbial populations of putting greens. USGA Green Section Record. :9-12. 2006
- Biological control of turfgrass diseases 2003
- Biological control of turfgrass diseases 2003
- Compost-induced suppression of turfgrass diseases. Part 1 2002
- Microbial mechanics of compost-induced suppression. Part 2 2002
- What are those microbes? 2001
- The continuing Pythium root rot problem in the Northeast 2000
- Do Biocontrols and pesticides mix? 1999
- Establishing and trafficking new bentgrass putting greens 1999
- Gray leaf spot: A potential threat to perennial ryegrass and tall fescue 1999
- Using Biological Control Strategies for Turf. Grounds Maintenance. . 1999
- Compost amendments for turfgrass disease control. AllGro Update. 3:2-3. 1998
- Current Status of U.S. Turfgrass Pathology Research. Turfgrass Trends. 7:10-15. 1998
- Disease Resistance in Bentgrasses Cultivars. Turfgrass Trends. 7:1-12. 1998
- Managing snow mold diseases: Typhula blight and Microdochium patch 1998
- Turfgrass patch diseases: The El Niño connection 1998
- Turfgrass pesticides and biological disease control: Are they compatible? 1998
- Understanding seed treatments for turfgrass establishment 1998
- Biological Control of Turfgrass Diseases: Today’s Technology Offers Much Promise. Golf Course Management. :60-69. 1997
- Maximizing disease control with fungicide applications: Part 7. Making sense out of fungicide efficacy tests. Turfgrass Trends. . 1997
- Microbiology of Turfgrass Soils. Grounds Maintenance. . 1997
- Subsurface algae in turfgrass soils: Both friend and foe. Turfgrass Trends. 6:5-8. 1997
- The turfgrass pathology program 1997
- Turfgrass seedling treatments for the control of Pythium diseases and the improvement of stand establishment. Turfgrass Trends. 6:8-13. 1997
- Controlling snow mold 1996
- Enhancing biological disease control with composts 1996
- Enhancing turfgrass disease control with organic amendments. Turfgrass Trends. 5:1-15. 1996
- Maximizing disease control with fungicide applications: Part 1. The basics of turfgrass fungicides. Turfgrass Trends. 5:10-17. 1996
- Maximizing disease control with fungicide applications: Part 2. Behavior in soil. Turfgrass Trends. 5:5-11. 1996
- Maximizing disease control with fungicide applications: Part 3. Plant and pathogen factors affecting fungicide efficacy. Turfgrass Trends. 5:1-7. 1996
- Maximizing disease control with fungicide applications: Part 4. Plant and pathogen factors affecting fungicide efficacy. Turfgrass Trends. 5:10-15. 1996
- Maximizing disease control with fungicide applications: Part 5. Plant and pathogen factors affecting fungicide efficacy. Turfgrass Trends. 5:1-5. 1996
- Maximizing disease control with fungicide applications: Part 6. Plant and pathogen factors affecting fungicide efficacy. Turfgrass Trends. 5:15-18. 1996
- Biological control of plant parasitic nematodes affecting turfgrasses. Turfgrass Trends. 4:17-20. 1995
- Biological control of turfgrass diseases - Using nature to advantage. Green Master. . 1995
- Diagnosis of root and crown diseases of turfgrass. Turfgrass Trends. 4:13-15. 1995
- Diagnosis of turfgrass diseases: The art and the science. Turfgrass Trends. 4:1-11. 1995
- Identification of unknown turfgrass pathogens: Koch's Postulates. Turfgrass Trends. 4:11-12. 1995
- Nematode disorders of turfgrasses: How important are they?. Turfgrass Trends. 4:1-16. 1995
- Nontarget effects of fungicide applications. Turfgrass Trends. 5:1-9. 1995
- The microbiology of turfgrass soils 1995
- Turfgrass diagnostic laboratories in the United States and Canada. Turfgrass Trends. 4. 1995
- A taxonomic history of Dreschlera and Pyrenophora. Turfgrass Trends. 3:10-11. 1994
- Biological controls: Promising new tools for disease management. Turfgrass Trends. 3. 1994
- Dreschlera and Pyrenophora leaf-spotting diseases. Turfgrass Trends. 3. 1994
- Environmental leadership is an opportunity. Turfgrass Trends. 3:14-15. 1994
- Future trends in turfgrass research: Science and technology. Turfgrass Trends. 3:9-14. 1994
- Getting the most from fungicides. Grounds Maintenance. . 1994
- How to minimize leaf spot and melting-out damage. Turfgrass Trends. 3:7-9. 1994
- Is Pythium really a fungus?. Turfgrass Trends. 4:11-15. 1994
- Naming cool- and warm-season Pythium diseases. Turfgrass Trends. 4:8-9. 1994
- Process is the key to disease-suppressive composts. Turfgrass Trends. 3:4-6. 1994
- Pythium diseases of turfgrasses: An overview. Turfgrass Trends. 4:1-7. 1994
- Recognizing and managing Summer Patch 1994
- The disease triangle and the disease cycle. Turfgrass Trends. 4:8-9. 1994
- The microbiology of turfgrass soils: More than meets the eye. Turfgrass Trends. 3. 1994
- Disease resistance of bentgrasses 1993
- Factors affecting propagule germination in two Pythium species pathogenic to turfgrasses 1993
- Microbial basis of disease suppression in composts applied to golf course turf 1993
- Organic source effects on disease suppression and physical stability of putting green rootzone mixes 1993
- Pythium root rot disease 1993
- Snow mold diseases 1993
- The utilization of aqueous compost fermentation extracts for the suppression of turfgrass pathogens 1993
- The utilization of aqueous compost fermentation extracts for the suppression of turfgrass pathogens 1993
- Biological Control of Diseases on Golf Course Turf. Monthly Golf Management. July. 1992
- Biological Control of Diseases on Golf Course Turf. USGA Green Section Record. 30:11-14. 1992
- Biological Control: Promises and Realities in Turfgrass Disease Management. Golf Course Management. :78-90. 1992
- Biotechnology: The future of the turfgrass industry. Turfgrass Trends. 1:14-15. 1992
- Late summer leaf spots and leaf blights. Turfgrass Trends. 1. 1992
- Maximizing fungicide performance 1992
- Patch disease control strategies 1992
- Pythium root rot: A growing problem on high maintenance turf. Turfgrass Trends. 1:1-4. 1992
- Soil: What is it anyway?. Turfgrass Trends. 1:11. 1992
- Soil: a biological resource worth managing. Turfgrass Trends. 1:11. 1992
- Summer patch: The biology and conditions that favor its growth. Turfgrass Trends. 1:1-5. 1992
- The state of turfgrass research. Turfgrass Trends. 1:12-13. 1992
- Understanding fungicides. Turfgrass Trends. 1:5. 1992
- Biology and control of Pythium root and crown rot diseases 1991
- Disease control 1991
- The Development of Microbial Fungicides for Turfgrass Disease Management 1991
- Emerging Disease Control Technologies. Lawn Care Industry. . 1990
- Pythium Complex Spreads. Northern Turf Management. 1:1-38. 1990
- Pythium root rot damages high quality turfgrass. Espaces Vert. . 1990
- The Advent of Biological Controls for Turfgrass Disease Management 1990
- Preventing Pythium Blight. Turf. 1:20-21. 1988
- Pythium Root Rot Damages High Quality Turfgrass 1988
- Composted bark controls soil pathogens of plants. Ohio Report. 67:7-10. 1982
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chapter
- Rhizosphere regulation of preinfection behavior of oomycete plant pathogens. Microbial Activity in the Rhizosphere. 311-343. 2006
- Biological Control of Oomycete and Fungal Pathogens. Encyclopedia of Plant and Crop Science. 137-140. 2004
- Biological control of turfgrass diseases. Advances in Plant Disease Management. 19-51. 2003
- Microbial strategies for the biological control of turfgrass diseases. Fate of Turfgrass Chemicals and Pest Management Approaches. 342-352. 2000
- Microbial mechanisms of biological disease control. Turfgrass Biotechnology. 55-92. 1997
- Applications of recombinant DNA technology for the management of soilborne diseases. Management of Soilborne Diseases. 65-99. 1996
- Biological control of turfgrass diseases. Integrated Pest Management for Turfgrass and Ornamentals. 409-427. 1994
- Mechanisms of protection of seed and seedlings by biological seed treatments: Implications for practical disease control. Seed Treatment: Progress and Prospects, BCPC Monograph No. 57. 283-292. 1994
- Mechanisms of protection of seeds and seedlings by biological seed treatments: implications for practical disease control. Seed Treatment, Progress and Prospects. 383-392. 1994
- Bacterial metabolism of propagule germination stimulants as an important trait in the biocontrol of Pythium seed infections. Biological Control of Plant Diseases: Progress and Challenges for the Future. 353-357. 1992
- Biological Control of Turfgrass Diseases. Compendium of Turfgrass Diseases. 82-83. 1992
- Pythium Diseases. Compendium of Turfgrass Diseases. 43-46. 1992
- Current limits to biological control of fungal phytopathogens. Handbook of Applied Mycology, "Soil and Plants". 327-355. 1990
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conference paper
- Association of fungus gnats with oomycetal plant pathogens.. IOBC/WPRS Bulletin. 1-4. 2008
- Carbon competition as a mechanism of Pythium damping-off suppression in a municipal biosolids compost. Phytopathology, Supplement. 2008
- Characterization of seed-colonizing bacterial communities associated with the suppression of Pythium damping-off in a municipal biosolids compost. Phytopathology, Supplement. 2008
- Differential interference with fatty acid degradation and Pythium ultimum sporangium activation by seed exudate sugars explains biocontrol failure of Enterobacter cloacae. Phytopathology, Supplement. 2008
- Modification of seed exudates by seed-colonizing microbes from vermicompost alters pre-infection behavior of Pythium aphanidermatum zoospores. Phytopathology, Supplement. 2008
- Interactions between Enterobacter cloacae and Pythium ultimum in the spermosphere is influenced by temporal seed exudation dynamics. Phytopathology. 2006
- Biological Control of Turfgrass Diseases. Proc., University of Massachusetts Conference "Focusing on Biological Control for the Green Industry". 91-103. 1997
- Organic lawn disease control. Proc., 27th Annual Professional Turf and Landscape Conference. 40-46. 1995
- Genetic complementation of a biocontrol-negative mutant of Enterobacter cloacae reveals a potential role of pathogen stimulant inactivation in the biological control of Pythium seed rots. Improving Plant Productivity with Rhizosphere Bacteria, Proc., 3rd International Plant Growth Promoting Rhizobacteria (PGPR) Workshop. 135-137. 1994
- Potential for biological control of turfgrass diseases. Proc., Michigan Turfgrass Conference. 75-84. 1992
- Pythium root rot - Another new disease. Proc., Michigan Turfgrass Conference. 119-122. 1992
- Annual bluegrass (Poa annua) biocontrol with Xanthomonas campestris pv MSU. Proc., 53rd Annual NYS Pest Management Conference. 26-30. 1991
- Are there alternative pest control methods: Biological control of diseases. Rutgers Turfgrass Proceedings. 11-15. 1991
- Exudate molecules initiating fungal responses to seeds and roots. Proc., 14th Beltsville Symposium: The Rhizosphere and Plant Health. 197-209. 1991
- Perspectives on the biology and control of Pythium root and crown rot. Rutgers Turfgrass Proceedings. 37-39. 1991
- The use of biological controls in turfgrass disease management. Proc., 53rd Annual NYS Pest Management Conference. 3-4. 1991
- Utilization of compost- and antagonist-amended top-dressings as a fungicide alternative for the control of turfgrass diseases. Proc., 51st Annual NYS Pest Management Conference. 1. 1989
- Okra stand establishment. Proc., Arkansas State Horticultural Society. 15-20. 1985
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document part
- Effect of fungus gnat Bradysia impatiens (Diptera: Sciaridae) feeding on 2008
- Molecular characterization of rhizosphere bacterial communities in Pythium-suppressive soils 1999
- Rhizosphere bacterial communities associated with hydroponic lettuce: Potential role in biological control of Pythium 1999
- Silicon impact on the growth and disease severity of creeping bentgrass. 136. 1998
- Biological and integrated control of turfgrass diseases using Trichoderma harzianum 1997
- Differential suppression of cucumber damping-off among three Pythium species in composts at different temperatures. 254-255. 1997
- Fatty acid uptake and beta-oxidation by Enterobacter cloacae is necessary for seed rot suppression of Pythium ultimum 1997
- Identification of Pythium species isolated from Gypsophila paniculata and other hosts in Israel. 250. 1997
- Compost-induced changes in soil microbial communities affecting the suppression of soilborne plant diseases 1996
- Fatty acid metabolism in Enterobacter cloacae: Role in biological control in Pythium 1996
- A limited period of susceptibility to Pythium infection 1994
- Biological control of Pythium graminicola and other soilborne pathogens of turfgrass with actinomycetes from composts 1994
- Biological control of Pythium, Rhizoctonia, and Sclerotinia incited diseases of turfgrass with Trichoderma harzianum (1295-22) 1994
- Germination of Pythium oospores in response to turfgrass seed and root exudates 1994
- Isolation of a gene from Enterobacter cloacae that affects biological control of Pythium ultimum seed rot 1994
- Loss of biological control ability in an Enterobacter cloacae mutant unable to catabolize linoleic acid 1994
- Suppression of Pythium graminicola root rot and damping-off of creeping bentgrass with composts of different origins and levels of maturity 1993
- Biological control of annual bluegrass (Poa annua var. reptans) with Xanthomonas campestris pv. poannua 1992
- Nutrient deprivation affects responses of Pythium ultimum sporangia to germination stimulants 1992
- Production of non-volatile and volatile inhibitors of Pythium ultimum sporangium germination and mycelial growth by strains of Enterobacter cloacae 1992
- Relationship between the biological control of Pythium seed and seedling disease and adherence to fungal structures by the bacterium Enterobacter cloacae 1992
- Genetic analysis of traits important for the biological control of Pythium seed rots by Enterobacter cloacae 1991
- Metabolism of Pythium sporangium germination stimulants by Enterobacter cloacae and other soil bacteria 1991
- Application of top-dressings amended with composts and organic fertilizers for the suppression of Brown Patch on a creeping bentgrass putting green 1990
- Comparative germination of culture-produced and plant-produced sporangia of Pythium ultimum in response to seed exudates and exudate components 1990
- Pith discoloration is correlated with fungal ergosterol content in anthracnose stalk rot of maize 1990
- Use of disease-suppressive top-dressings for the control of Dollar Spot (Sclerotinia homoeocarpa) on a creeping bentgrass putting green 1990
- Biological control of Pythium seed rot and pre-emergence damping-off of cotton with Enterobacter cloacae and Erwinia herbicola applied as seed treatments 1987
- Protection of cotton seedlings against Rhizoctonia solani by bacterial seed treatment 1987
- Germination of sporangia of Pythium species in response to volatiles from germinating cotton seeds 1986
- Addition of food base compounds to biological seed treatments for the improvement of Trichoderma biocontrol activity 1984
- Lectin-mediated attachment of the biocontrol agent Enterobacter cloacae to fungal hyphae: I. Role in fungal growth inhibition 1984
- Lectin-mediated attachment of the biocontrol agent Enterobacter cloacae to fungal hyphae: II. Role in the biological control of Pythium seed rot 1984
- Effects of compost maturity on the induction of suppression to Rhizoctonia damping-off of radish by Trichoderma harzianum 1983
- Induction of suppressiveness to Rhizoctonia damping-off by species of Trichoderma and Gliocladium virens from composted hardwood bark 1982
- The fungus flora of hardwood bark composts suppressive and conducive to Rhizoctonia damping-off 1982
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manual
- Diagnosis and Management of Turfgrass Diseases 2004
- Soil Microbiology 2004
- Diagnosis and Management of Turfgrass Diseases 2003
- Soil Microbiology 2003
- Diagnosis and Management of Turfgrass Diseases 2002
- Diagnosis and Management of Turfgrass Diseases 2002
- Soil Biology 2002
- Soil Microbiology 2002
- Diagnosis and Management of Turfgrass Diseases 2001
- Soil Microbiology 2001
- Turfgrass diseases 2000
- Biological Control of Turfgrass Diseases 1999
- Overview of Turfgrass Disease Management Practices 1999
- Pythium Diseases of Turfgrasses 1999
- Turfgrass diseases 1999
- Turfgrass diseases 1998
- Turfgrass diseases 1998
- Turfgrass diseases 1997
- Turfgrass diseases 1997
- Turfgrass diseases 1996
- Turfgrass diseases 1995
- Turfgrass diseases 1994
- Turfgrass diseases 1993
- Turfgrass diseases 1992
- Turfgrass diseases 1991
- Turfgrass diseases 1990
- Turfgrass diseases 1989
- Turfgrass diseases 1988
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report
- Commercial composts and microbial inoculants 1999
- Current status and future prospects for the biological control of turfgrass diseases. 1-8. 1998
- Determination of disease suppressiveness and soil microbial responses to applications of natural organic fertilizers. 21-25. 1998
- Enhancement of Pythium suppression in turfgrass soils amended with composts. 26-31. 1998
- Evaluation of turfgrass establishment systems for pesticide reduction. 34-37. 1998
- Evaluations of fungicides for control of Pythium root rot on creeping bentgrass. 12-14. 1998
- Evaluations of fungicides for control of dollar spot and copper spot on creeping bentgrass. 9-11. 1998
- Genetic basis of biological control in a bacterium antagonistic to turfgrass pathogens. 47-50. 1998
- Impacts of conventional turfgrass pesticides on the efficacy of compost amendments used for the biological control of turfgrass diseases. 15-20. 1998
- Microbial basis of disease suppression in composts applied to golf course turf. 12. 1998
- Biological Control of Turfgrass Diseases. 177-195. 1997
- Evaluating the Impact of Compost Amendments on Soil Microbial Activity and Nutrient Availability in Beets 1997
- Evaluation of Microbial Inoculants for Turfgrass Disease Control. 43. 1997
- Evaluation of fungicides for control of brown patch on creeping bentgrass. 20-21. 1997
- Evaluation of microbial inoculants for turfgrass disease control. 14-19. 1997
- Genetic basis of biological control in a bacterium antagonistic to turfgrass pathogens. 9-13. 1997
- Genetic basis of biological control in a bacterium antagonistic to turfgrass pathogens. 46-47. 1997
- Impact of composts on disease incidence in vegetable systems. 31-36. 1997
- Nontarget effects of turfgrass fungicides on microbial communities in USGA putting green profiles. 4-8. 1997
- Composts: Soil Application and Effects 1996
- Enhancement of biological disease control in turfgrasses with composts: Impacts of compost amendments on soil microbial communities. 35. 1996
- Genetic basis of biological control in a bacterium antagonistic to turfgrass pathogens. 52-53. 1996
- Genetic basis of biological control in a bacterium antagonistic to turfgrass pathogens. 46-47. 1995
- Biologically-based management of turfgrass pests. 21-33. 1994
- Annual bluegrass control with Xanthomonas campestris pv. poannua, 1992 progress. 51-60. 1993
- Microbial basis of pathogen suppression in compost-based organic fertilizers applied to turfgrasses. 38-50. 1993
- Organic source effects on disease suppression and physical stability of putting green rootzone mixes. 67-74. 1993
- Biological Control of Turfgrass Diseases 1992
- Microbial basis of pathogen suppression in compost-based organic fertilizers applied to turfgrasses. 56-66. 1992
- Suppression of Pythium root rot with top-dressings amended with composts and organic fertilizers, 1991. 104. 1992
- Suppression of Typhula blight with top-dressings amended with composts and organic fertilizers, 1990. 107. 1992
- Suppression of dollar spot with top-dressings amended with composts and organic fertilizers, 1990. 106. 1992
- Biological Control of Brown Patch on a Creeping Bentgrass Putting Green. 108-109. 1991
- Biological Control of Dollar Spot on a Creeping Bentgrass Putting Green. 113-115. 1991
- Biological Control of Red Thread on Perennial Ryegrass. 116. 1991
- Development of a pathogen monitoring system for golf course turf: Population dynamics of turf pathogens in golf course putting greens. 99-107. 1991
- Development of a pathogen monitoring system for golf course turf: Population dynamics of turf pathogens in golf course putting greens. 79-91. 1991
- Evaluation of bentgrass cultivars and fine fescue/bentgrass mixes for disease resistance. 117-118. 1991
- Evaluation of bentgrass cultivars and fine fescue/bentgrass mixes for disease resistance. 92-94. 1991
- Identification and comparative pathogenicity of Pythium spp. from roots and crowns of turfgrasses exhibiting symptoms of root rot. 95-98. 1991
- Microbial basis of pathogen suppression in compost-based organic fertilizers applied to turfgrasses. 95-96. 1991
- Pathogenicity of Root-Infecting Pythium spp. on Creeping Bentgrass (Agrostis palustris) Turf. 110-112. 1991
- Reaction of creeping bentgrass cultivars to Pythium root rot, 1990. 92. 1991
- Suppression of brown patch with top-dressings amended with composts and organic fertilizers, 1989. 90. 1991
- Suppression of dollar spot on creeping bentgrass/annual bluegrass turf with top-dressings amended with composts and organic fertilizers. 93-94. 1991
- Suppression of dollar spot with top-dressings amended with composts and organic fertilizers, 1989. 93. 1991
- Suppression of gray snow mold on creeping bentgrass/annual bluegrass turf with top-dressings amended with composts and organic fertilizers. 90-92. 1991
- Suppression of red thread with top-dressings amended with composts and organic fertilizers, 1989. 101. 1991
- Implementing an IPM program at the Sagamore Resort golf course. 46-48. 1990
- Pythium damping-off of okra cultivars, 1987. 22. 1990
- Utilization of compost- and antagonist-amended top-dressings as a fungicide alternative for the control of turfgrass diseases. 8-16. 1990
- Biological control of Dollar Spot on a creeping bentgrass/annual bluegrass putting green. 68-72. 1989
- Development of IPM strategies for turfgrass. 84-86. 1989
- Evaluation of bacterial antagonists for the biological control of Pythium Blight of turfgrass. 73-77. 1989
- Evaluation of seed-applied biocontrol agents on winter wheat in a site with a history of foot rot diseases, 1988. 54. 1989
- Evaluation of seed-applied biocontrol agents on winter wheat in a site with a history of foot rot diseases, 1988. 54. 1989
- Evaluation of systemic Pythium-selective fungicides for the control of Pythium root rot of turfgrass. 81-83. 1989
- Pythium Root Rot damages high quality turfgrass 1989
- Sensitivity of Pythium species isolated from turfgrass roots to systemic Pythium fungicides. 78-80. 1989
- Biological control of Pythium Blight and Brown Patch of creeping bentgrass. 44-47. 1988
- Identity and pathogenicity of Pythium spp. recovered from creeping bentgrass/annual bluegrass roots. 42-43. 1988
- Control of downy mildew of turnip with fungicide sprays. 90. 1982
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review
- Soilborne Plant Pathogens, by G.W. Bruehl. 289-290. 1995
- Further examination of organic fertilizers/microbial products and their possible role in disease suppression on golf course turfgrass in the Capital District of New York State 2000
- Optimization of application timing and frequency of microbial inoculants for turfgrass disease control 2000
- 1999 Pest Management Recommendations for Commercial Turfgrass 1999
- Compatibility of microbial inoculants with conventional turfgrass pesticides 1999
- Optimization of application timing and frequency of microbial inoculants for turfgrass disease control 1999
- Quantifying disease suppression activity of organic fertilizer/microbial products on golf course turfgrass in the Capital District of New York State 1999
- 1998 Pest Management Recommendations for Commercial Turfgrass 1998
- Evaluation of turfgrass establishment systems for pesticide reduction 1998
- Impacts of conventional turfgrass pesticides on the efficacy of compost amendments used for the biological control of turfgrass diseases 1998
- 1997 Pest Management Recommendations for Commercial Turfgrass 1997
- Impact of composts on disease incidence in vegetable systems 1997
- 1996 Pest Management Recommendations for Commercial Turfgrass 1996
- Enhancement of biological disease control in turfgrasses with composts: Impacts of compost amendments on soil microbial communities 1996
- 1995 Pest Management Recommendations for Commercial Turfgrass 1995
- Home Lawns: Varieties and Pest Control Guide 1995
- 1994 Cornell Recommendations for Commercial Turfgrass Management 1994
- 1993 Cornell Recommendations for Commercial Turfgrass Management 1993
- 1992 Cornell Recommendations for Commercial Turfgrass Management 1992
- 1991 Cornell Recommendations for Commercial Turfgrass Management 1991
- 1990 Cornell Recommendations for Commercial Turfgrass Management 1990
- Turfgrass Diseases 1990
- 1989 Cornell Recommendations for Commercial Turfgrass Management 1989
- Commercial Turf Disease Recommendations for New York State 1989
- 1988 Cornell Recommendations for Commercial Turfgrass Management 1988
- Bacterial pathogens 1988
- Commercial Turf Disease Recommendations for New York State 1988
- Cyst nematodes 1988
- Root knot nematodes: Symptoms, life stages, and control 1988
- Study of plant parasitic nematodes 1988
- Enhancement of seedling emergence and protection from seedling pathogens by pre-germination of cotton seed 1987
- Laboratory Exercises in Plant Pathology 1987
featured in archived article
Teaching
teaching overview
- I teach four courses: PlPa 1100, Symbiotic Associations in Nature, PlPa 4330, Ecology of Infectious Diseases, PlPa 6000 Ecology of Plant Diseases in Natural Ecosystems, and PlPa 6440 Current Topics in Oomycete Biology. In PlPa 110 and PlPa 4330 I teach the ecological relationships between organisms and the environment. My teaching emphasizes critical thinking and inquiry-based learning in an attempt to understand the subject matter within the context of the scientific process. PlPa 6000 and PlPa 6440 are each one credit courses designed primarily for graduate students where we critique primary research papers and discuss current research trends in these disciplinary areas.
teaching activities
- PLPA-6000: Ecology of Plant Diseases in Natural Ecosystems - Spring 2013
- PLPA-7980: Graduate Teaching Experience - Spring 2013
- PLPA-7990: Graduate-Level Thesis Research - Spring 2013
- PLPA-8900: Master's Level Thesis Research - Spring 2013
- PLPA-9900: Doctoral-Level Thesis Research - Spring 2013
- PLPA-2950: Biology of Infectious Disease: From Molecules to Ecosystems - Fall 2012
- PLPA-4330: Disease Ecology - Fall 2012
- PLPA-7980: Graduate Teaching Experience - Fall 2012
- PLPA-7990: Graduate-Level Thesis Research - Fall 2012
- PLPA-8900: Master's Level Thesis Research - Fall 2012
- PLPA-9900: Doctoral-Level Thesis Research - Fall 2012
- PLPA-7980: Graduate Teaching Experience - Spring 2012
- PLPA-7990: Graduate-Level Thesis Research - Spring 2012
- PLPA-8900: Master's Level Thesis Research - Spring 2012
- PLPA-9900: Doctoral-Level Thesis Research - Spring 2012
- PLPA-4330: Ecology of Infectious Diseases - Fall 2011
- PLPA-6440: Special Topics Series - Current Topics in Oomycete Biology - Fall 2011
- PLPA-7980: Graduate Teaching Experience - Fall 2011
- PLPA-7990: Graduate-Level Thesis Research - Fall 2011
- PLPA-8900: Master's-Level Thesis Research - Fall 2011
- PLPA-9900: Doctoral-Level Thesis Research - Fall 2011
Service
outreach overview
- An applied emphasis of my work is in the area of biological control of oomycete diseases and in the biological control of invasive plant species.
service to the profession
- Ecological Society of America Member 2010 -
- International Society for Microbial Ecology Member 2010 -
- The American Phytopathological Society Member 1978 -
- American Phytopathological Society Senior Editor of Phytopathology 1978 - 2009
- NC-125 Regional Committee on Biological Control Committee Member 1998 - 2004
- American Phytopathological Society, Turfgrass Working Group Co-Chair 1996 - 2002
- American Phytopathological Society, Turfgrass Working Group Member 1995 - 2002
- American Phytopathological Society, Diseases of Ornamentals and Turfgrasses Committee Committee Member 1997 - 2000
- American Society for Microbiology Member 1984 - 2000
- 7th International Plant Growth-Promoting Rhizobacteria (PGPR) Workshop Steering Committee Committee Member - 2000
- ESCOP/PMSS Working Group on Biological Control Member 1997 - 1999
- American Phytopathological Society, Turfgrass Pathology Committee Chairperson - 1999
- Eastern Regional Conference on the Ecology of Root-Infecting Microorganisms Steering Committee Committee Member 1990 - 1995
- USDA Biocontrol of Plant Diseases Laboratory Reviewer, Program - 1991
- American Phytopathological Society, Biological Control Committee Committee Member 1987 - 1990
- American Phytopathological Society, Biological Control Committee Chairperson 1988 - 1989
- American Phytopathological Society, Soil Microbiology and Root Disease Committee Committee Member 1986 - 1988
reviewer or editor for
- Biological Control
- Community IPM Review Panel for NYS IPM Program
- Ecology
- Mycologia
- NSF/USDA, IFAFS, Microbial Genome Sequencing Program, Washington, DC
- National Research Initiative Competitive Grants Program, Biological Control Program, Washington, DC
- National Science Foundation
- National Science Foundation
- Ornamentals Review Panel for NYS IPM Program
- Phytopathology
- Phytopathology
- USDA Agriculture and Food Research Initiative (AFRI)
- USDA National Research Initiative Competitive Grants Program; National Science Foundation; U.S. DOE Energy Biosciences Program; U.S.-Israel Binational Agricultural Research & Development Grants Program (BARD); and USDA SBIR Program
Background
education and training
- Ph.D. in Plant Pathology, The Ohio State University 1982
- The Ohio State University 1980
- B.S. in Plant Sciences, Indiana University 1977
awards and honors
Other
college
- CALS
research keyword
- Disease Ecology
- Invasive Species
- Microbial Ecology
- Soil Biology
name prefix
- Dr.