Northeast-Potomac mtg program, Annapolis

American Phytopathological Society

Potomac Division
Program

Joint Meeting of the Potomac and Northeastern Division, APS
Annapolis, MD
March 10-12, 1999

Wednesday, March 10

1:00- 8:00

Registration

1:15-5.00

Cancelled due to previous day's snow: Forest Pathology Tour, Washington, DC, organized by Dale Bergdahl and Bill Macdonald, and led by Rob Defeo and Jim Sherald of the National Park Service. This field trip will provide a unique opportunity to focus on a variety of urban forestry is-sues including site preparation, species selection, and management. Landscaping as-sociated with the FDR and Korean War Veteran Memorials will be the focus of the tour. Additionally, Dutch elm disease management, the threat of elm yellows and other shade tree maladies will be discussed.

1:00-3:00

Extension Update, organized by Erik Stromberg and Norm Lalancette. Thomas Point

3:00-4:00

Industry Update, organized by Roger Kaiser. Thomas Point

2:00-4:00

Cancelled ~~Tour of Beltsville Laboratories, organized by Anne Bird Sindermann~~

5:00-6:00

Executive & Planning Comm., NED; Awards Committee, NED. Thomas Point

7:00-8:00

Social Hour. Atrium

800-9:30

Symposium. Delivery of Information Through New Technologies - Communications in the New Millennium. Organized by David Clement.

The Home and Garden Information Center - an extension program for public outreach - David L. Clement, U. of MD Cooperative Extension.

Diagnostic Web Site for Plants, Landscapes, and Pests - Mary K Malinoski, U. of MD Cooperative Extension.

Integrating Traditional Methods and New Technology for Information Delivery - Jon H. Traunfeld, U. of MD Cooperative Extension.

Communication Technologies for the Future that Utilize the Web and Teleconferencing - Jerry O Donnell, Lucent Technologies.

Thursday, March 11

8:00-noon

Registration

8:15

Welcome and Introductions - Ballroom A
Dr. Henry A. Virts, D. V. M., Maryland Secretary of Agriculture
Dr. James W. Wade, Associate Dean and Associate Director, University of Maryland Cooperative Extension.

8:30-11:00

Symposium: The Relative Value of Molecular Characters in Understanding Fungal Evolution. Organized by Paul Tooley.

The Sum is Greater than its Parts: Inferring a Phylogeny from Combined Datasets. - Linda Kohn, University of Toronto.

Phylogenetic Inferences at the Species Level: Three Case Studies in the Genus Aspergillus." David Geiser, Pennsylvania State University.

Putting the Lichen-Forming and Lichen-Parasitic Fungi in their Place: The Value of Large Molecular Data Sets. Paula DePriest, Smithsonian Institution, Washington, DC.

Molecular and Morphological Criteria for Classification of the Graminicolous Clavicipitaceae. James White, Rutgers University.

11:00-11:45

Contributed Papers

10:00

Evaluation of bactericides for the control of copper-resistant Pseudomonas syringae on tomato in Virginia. ALEXANDER, S. A., (1), Waldenmaier, C. M., (1) and Kim, S. H., (2). (1) Virginia Polytechnic Institute and State Univer-sity, Blacksburg, VA, and (2) Pennsylvania Department of Agriculture, Harrisburg, PA.

10:15

Utilization of rep-PCR in characterizing populations of Clavibacter michiganensis subsp. michiganensis in commercial tomato fields of Michigan. WERNER, N., Hausbeck, M. K., Fulbright, D. W., Michigan State University, East Lansing, MI.

10:30

Differential responses of white and brown Agaricus mushrooms to Trichoderma green mold. M. G. ANDERSON, D.M. Beyer, P.J. Wuest. Dept. Plant Pathology, Pennsylvania State University, University Park, PA 16802.

10:45

Epidemiology and management of gray leaf spot of corn in the U.S. NUTTER, Jr., F. W., (1) and Stromberg, E. L., (2) (1) Iowa State University, Ames, IA, and (2) Virginia Polytechnic Institute and State University, Blacksburg, VA.

11:00

Comparison of weather data collection methods for predicting late blight of potato in Delaware. MULROONEY, R. P., Whalen, J., and Spellman, M. R., University of Delaware, Newark, DE.

11:15

Managing bacterial spot of bell peppers with resistant varieties and copper applications initiated after disease detection. MC GRATH, M. T., Cornell University, Riverhead, NY.

11:30

Noncucurbit hosts of the cucurbit powdery mildew fungus. SHISHKOFF, N., Cornell University, Riverhead, NY.

11:45-1:15

Lunch (on your own)

1:15-2:45

Graduate Student Paper Competition (Potomac and Northeastern Divisions)

1:15

Management of powdery mildew on poinsettia. BYRNE, J. M., and Hausbeck, M. K. Michigan State University, East Lansing, MI. (Northeast)

1:30

Cyanide-resistant respiration and altered virulence in the oak wilt fungus Ceratocystis fagacearum. SHAW, R.S., Bertrand, H., and Fulbright, D.W. Michigan State University, East Lansing, MI. (Northeast)

1:45

Effect of transgene Bt toxin and applications of tefluthrin, azoxystrobin and propiconazole on yield and agronomic characters of near isoline double-cropped corn in Virginia. SFORZA, P.M., Hagood, E. S., and Stromberg, E. L., Virginia Polytechnic Institute and State University, Blacksburg, VA. (Potomac)

2:00

Fruit spot (bird's-eye) development caused by Clavibacter michiganensis subspecies michiganensis on processing tomatoes. MEDINA-MORA, C. M., Bell, J., Hausbeck, M.K., and Fulbright, D. W., Michigan State University, East Lansing, MI. (Northeast)

2:45-3:15

Contributed Papers

2:15

Impact of Verticillium dahliae on eggplant root exudates and Trichoderma spp. populations in poultry compost amended soil. GASKINS, V. L., Philip, E., Karanja, K., Brooks, C., and Morant, M., University of Maryland Eastern Shore, Princess Anne, MD.

2:30

Effectiveness of azoxystrobin and chlorothalonil in control of early blight, anthracnose and powdery mildew of processing and fresh market tomatoes. JOHNSTON, S., Maletta, M., Cowgill, W., Tietjen, W., Manning, T., and Nitzsche, P., Rutgers Agricultural Research & Extension Center Bridgeton, NJ.

2:45

Effects of SI fungicides on red delicious apples. OLSON, B. D., Dow AgroSciences, Geneva, NY.

3:00

Analysis of fire blight epidemics with spatio-temporal distance class analysis. BIGGS, A. R., West Virginia University, Kearneysville, WV.

3:30-4:00

Joint Business Meeting, both divisions

4:00-5:00

Separate Business Meetings, Potomac Division and Northeastern Division

6:00-7:30

Posters. (see listing) Atrium
Industry and APHIS displays. Atrium.

6:30-7:00

Social (same area as posters and displays)

7:30-9:30

Banquet

Friday, March 12

8:30-12:00

Symposium: Advances in the Biology and Management of Gray Leaf Spot (Pyricularia grisea) in Cool-Season Turfgrasses. Organized by Peter Dernoeden

History and Symptomology of Gray Leaf Spot in Perennial Ryegrass Golf Turf in the Mid-Atlantic Region. Dr. Peter Dernoeden, University of Maryland.

Molecular Genetics of Magnaporthe grisea from Various Grasses. Dr. Mark Farman, University of Kentucky.

Epidemiology of Gray Leaf Spot and Host Specificity. Dr. Wakar Uddin, The Pennsylvania State University

Cultural Practices and Germplasm Resistance for Managing Gray Leaf Spot. Dr. Bruce Clarke, Rutgers University.

Fungicidal Management of Gray Leaf Spot of Perennial Ryegrass: Necessity, Efficacy, and Timing. Dr. Paul Vincelli, University of Kentucky.

How Gray Leaf Spot Has Impacted the Golf Industry. Mr. Stanley Zontek, United States Golf Association

Discussion

8:30-11:30

Contributed Papers

8:15

Row spacing as a tool in the management of Sclerotinia white mold in soybeans., PENNYPACKER, B. W., and Risium, M. L., Pennsylvania State University, University Park, PA.

8:30

New rust and mosaic resistant bean germplasm releases in 1998. STAVELY, J. R., USDA-ARS, Beltsville, MD.

8:45

Acrobat MZ for controlling tobacco blue mold: a 3-year summary of field trials., BECKER, C. M., McCullough, J., Walls, F. B., American Cyanamid Co, Romulus, NY.

9:00

Bacillus megaterium: a possible biocontrol organism against Cryphonectria parasitica on American chestnut. GROOME, P., Tattar, T., and Mount, M. S., University of Massachusetts, Amherst, MA.

9:15

Information obtained from E4/E6 ratios in decomposing red spruce sapwood., CONNOLLY, J. H., (1), Jellison, J., (2) and Shortle, W., (3). (1) Husson College, Bangor, ME, (2) University of Maine, Orono, ME, and (3) USDA Forest Service, Durham, NH.

9:30

Suppression of Colletotrichum spp. causing apple bitter rot by calcium salts. BIGGS, A. R., West Virginia University, Kearneysville, WV.

9:45

Characteristics and distribution of the new Carla virus isolated from the potato cv. Red LaSoda. GOTH, R. W., Ellis, P. J., de Villiers, G., Goins, E. W., Wright, N. S., and Ballesteros, M., USDA-ARS, Beltsville, MD.

1:00- 8:00	Registration
1:15-5.00	Cancelled due to previous day's snow: Forest Pathology Tour, Washington, DC, organized by Dale Bergdahl and Bill Macdonald, and led by Rob Defeo and Jim Sherald of the National Park Service. This field trip will provide a unique opportunity to focus on a variety of urban forestry is-sues including site preparation, species selection, and management. Landscaping as-sociated with the FDR and Korean War Veteran Memorials will be the focus of the tour. Additionally, Dutch elm disease management, the threat of elm yellows and other shade tree maladies will be discussed.
1:00-3:00	Extension Update, organized by Erik Stromberg and Norm Lalancette. Thomas Point
3:00-4:00	Industry Update, organized by Roger Kaiser. Thomas Point
2:00-4:00	Cancelled ~~Tour of Beltsville Laboratories, organized by Anne Bird Sindermann~~
5:00-6:00	Executive & Planning Comm., NED; Awards Committee, NED. Thomas Point
7:00-8:00	Social Hour. Atrium
800-9:30	Symposium. Delivery of Information Through New Technologies - Communications in the New Millennium. Organized by David Clement. The Home and Garden Information Center - an extension program for public outreach - David L. Clement, U. of MD Cooperative Extension. Diagnostic Web Site for Plants, Landscapes, and Pests - Mary K Malinoski, U. of MD Cooperative Extension. Integrating Traditional Methods and New Technology for Information Delivery - Jon H. Traunfeld, U. of MD Cooperative Extension. Communication Technologies for the Future that Utilize the Web and Teleconferencing - Jerry O Donnell, Lucent Technologies.

8:00-noon	Registration
8:15	Welcome and Introductions - Ballroom A Dr. Henry A. Virts, D. V. M., Maryland Secretary of Agriculture Dr. James W. Wade, Associate Dean and Associate Director, University of Maryland Cooperative Extension.
8:30-11:00	Symposium: The Relative Value of Molecular Characters in Understanding Fungal Evolution. Organized by Paul Tooley. The Sum is Greater than its Parts: Inferring a Phylogeny from Combined Datasets. - Linda Kohn, University of Toronto. Phylogenetic Inferences at the Species Level: Three Case Studies in the Genus Aspergillus." David Geiser, Pennsylvania State University. Putting the Lichen-Forming and Lichen-Parasitic Fungi in their Place: The Value of Large Molecular Data Sets. Paula DePriest, Smithsonian Institution, Washington, DC. Molecular and Morphological Criteria for Classification of the Graminicolous Clavicipitaceae. James White, Rutgers University.
11:00-11:45	Contributed Papers
10:00	Evaluation of bactericides for the control of copper-resistant Pseudomonas syringae on tomato in Virginia. ALEXANDER, S. A., (1), Waldenmaier, C. M., (1) and Kim, S. H., (2). (1) Virginia Polytechnic Institute and State Univer-sity, Blacksburg, VA, and (2) Pennsylvania Department of Agriculture, Harrisburg, PA.
10:15	Utilization of rep-PCR in characterizing populations of Clavibacter michiganensis subsp. michiganensis in commercial tomato fields of Michigan. WERNER, N., Hausbeck, M. K., Fulbright, D. W., Michigan State University, East Lansing, MI.
10:30	Differential responses of white and brown Agaricus mushrooms to Trichoderma green mold. M. G. ANDERSON, D.M. Beyer, P.J. Wuest. Dept. Plant Pathology, Pennsylvania State University, University Park, PA 16802.
10:45	Epidemiology and management of gray leaf spot of corn in the U.S. NUTTER, Jr., F. W., (1) and Stromberg, E. L., (2) (1) Iowa State University, Ames, IA, and (2) Virginia Polytechnic Institute and State University, Blacksburg, VA.
11:00	Comparison of weather data collection methods for predicting late blight of potato in Delaware. MULROONEY, R. P., Whalen, J., and Spellman, M. R., University of Delaware, Newark, DE.
11:15	Managing bacterial spot of bell peppers with resistant varieties and copper applications initiated after disease detection. MC GRATH, M. T., Cornell University, Riverhead, NY.
11:30	Noncucurbit hosts of the cucurbit powdery mildew fungus. SHISHKOFF, N., Cornell University, Riverhead, NY.
11:45-1:15	Lunch (on your own)
1:15-2:45	Graduate Student Paper Competition (Potomac and Northeastern Divisions)
1:15	Management of powdery mildew on poinsettia. BYRNE, J. M., and Hausbeck, M. K. Michigan State University, East Lansing, MI. (Northeast)
1:30	Cyanide-resistant respiration and altered virulence in the oak wilt fungus Ceratocystis fagacearum. SHAW, R.S., Bertrand, H., and Fulbright, D.W. Michigan State University, East Lansing, MI. (Northeast)
1:45	Effect of transgene Bt toxin and applications of tefluthrin, azoxystrobin and propiconazole on yield and agronomic characters of near isoline double-cropped corn in Virginia. SFORZA, P.M., Hagood, E. S., and Stromberg, E. L., Virginia Polytechnic Institute and State University, Blacksburg, VA. (Potomac)
2:00	Fruit spot (bird's-eye) development caused by Clavibacter michiganensis subspecies michiganensis on processing tomatoes. MEDINA-MORA, C. M., Bell, J., Hausbeck, M.K., and Fulbright, D. W., Michigan State University, East Lansing, MI. (Northeast)
2:45-3:15	Contributed Papers
2:15	Impact of Verticillium dahliae on eggplant root exudates and Trichoderma spp. populations in poultry compost amended soil. GASKINS, V. L., Philip, E., Karanja, K., Brooks, C., and Morant, M., University of Maryland Eastern Shore, Princess Anne, MD.
2:30	Effectiveness of azoxystrobin and chlorothalonil in control of early blight, anthracnose and powdery mildew of processing and fresh market tomatoes. JOHNSTON, S., Maletta, M., Cowgill, W., Tietjen, W., Manning, T., and Nitzsche, P., Rutgers Agricultural Research & Extension Center Bridgeton, NJ.
2:45	Effects of SI fungicides on red delicious apples. OLSON, B. D., Dow AgroSciences, Geneva, NY.
3:00	Analysis of fire blight epidemics with spatio-temporal distance class analysis. BIGGS, A. R., West Virginia University, Kearneysville, WV.
3:30-4:00	Joint Business Meeting, both divisions
4:00-5:00	Separate Business Meetings, Potomac Division and Northeastern Division
6:00-7:30	Posters. (see listing) Atrium Industry and APHIS displays. Atrium.
6:30-7:00	Social (same area as posters and displays)
7:30-9:30	Banquet

8:30-12:00	Symposium: Advances in the Biology and Management of Gray Leaf Spot (Pyricularia grisea) in Cool-Season Turfgrasses. Organized by Peter Dernoeden History and Symptomology of Gray Leaf Spot in Perennial Ryegrass Golf Turf in the Mid-Atlantic Region. Dr. Peter Dernoeden, University of Maryland. Molecular Genetics of Magnaporthe grisea from Various Grasses. Dr. Mark Farman, University of Kentucky. Epidemiology of Gray Leaf Spot and Host Specificity. Dr. Wakar Uddin, The Pennsylvania State University Cultural Practices and Germplasm Resistance for Managing Gray Leaf Spot. Dr. Bruce Clarke, Rutgers University. Fungicidal Management of Gray Leaf Spot of Perennial Ryegrass: Necessity, Efficacy, and Timing. Dr. Paul Vincelli, University of Kentucky. How Gray Leaf Spot Has Impacted the Golf Industry. Mr. Stanley Zontek, United States Golf Association Discussion
8:30-11:30	Contributed Papers
8:15	Row spacing as a tool in the management of Sclerotinia white mold in soybeans., PENNYPACKER, B. W., and Risium, M. L., Pennsylvania State University, University Park, PA.
8:30	New rust and mosaic resistant bean germplasm releases in 1998. STAVELY, J. R., USDA-ARS, Beltsville, MD.
8:45	Acrobat MZ for controlling tobacco blue mold: a 3-year summary of field trials., BECKER, C. M., McCullough, J., Walls, F. B., American Cyanamid Co, Romulus, NY.
9:00	Bacillus megaterium: a possible biocontrol organism against Cryphonectria parasitica on American chestnut. GROOME, P., Tattar, T., and Mount, M. S., University of Massachusetts, Amherst, MA.
9:15	Information obtained from E4/E6 ratios in decomposing red spruce sapwood., CONNOLLY, J. H., (1), Jellison, J., (2) and Shortle, W., (3). (1) Husson College, Bangor, ME, (2) University of Maine, Orono, ME, and (3) USDA Forest Service, Durham, NH.
9:30	Suppression of Colletotrichum spp. causing apple bitter rot by calcium salts. BIGGS, A. R., West Virginia University, Kearneysville, WV.
9:45	Characteristics and distribution of the new Carla virus isolated from the potato cv. Red LaSoda. GOTH, R. W., Ellis, P. J., de Villiers, G., Goins, E. W., Wright, N. S., and Ballesteros, M., USDA-ARS, Beltsville, MD.