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David A. Rosenberger
Professor of Plant Pathology
and Superintendent of Cornell University’s Hudson Valley
Laboratory
Address, Phone, Fax
E-Mail: dar22@cornell.edu
Ph.D. 1977 Plant Pathology, Michigan State University, East
Lansing, MI
B.A. 1969 Biology, Goshen College, Goshen, IN
Division of Effort
50% Research , 30% Extension , 20% Administration
Complete
Publication List – html |
pdf |
| Program
Overview |
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As Plant Pathologist at Cornell University’s Hudson
Valley Laboratory in Highland, NY, my research program focuses
on finding immediate solutions to disease problems on tree fruits.
Field tests are conducted each year to evaluate new fungicides and
management strategies for apple diseases. Fungicides are evaluated
for effectiveness against apple scab, powdery mildew, rust diseases,
sooty blotch, flyspeck, black rot, and bitter rot. I also conduct
research on postharvest decays of apples in storage, with particular
emphasis on decays caused by Penicillium expansum. Inoculum
sources, infection sites, and control strategies for P. expansum
are being studied in commercial apple storages. Disease susceptibility
of new apple cultivars is being studied in conjunction with the
USDA Multistate Project NE-183,.
As part of my Cooperative Extension program, I monitor the development
of apple scab, rust diseases, and fire blight each season and provide
timely reminders and "disease alerts" to county-based
fruit extension educators, regional extension specialists, fruit
industry consultants, and fruit growers. This information is disseminated
by e-mail, code-a-phone, and via the weekly Scaffolds
Fruit Journal.
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| Links
to Recent and Current Projects |
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"One bad apple …" — Research on postharvest
diseases - site under construction
Spotty problems: Disease susceptibility of new apple cultivars
- site under construction
Apple health: Using fungicides to keep trees healthy and productive
- site under construction
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| Professional
Experience |
| 1977-83 |
Assistant Professor,
Department of Plant Pathology, NY State Agricultural Experiment
Station at Geneva, Cornell University. |
| 1984-97 |
Associate Professor,
Department of Plant Pathology, NY State Agricultural Experiment
Station at Geneva, Cornell University. |
| 1997-present |
Professor, Department
of Plant Pathology, NY State Agricultural Experiment Station
at Geneva, Cornell University. |
| 1990 -present: |
Superintendent of
Cornell's Hudson Valley Laboratory |
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| Professional
Activities |
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Professional Societies
American Phytopathological Society
American Association for the Advancement of Science
Council for Agricultural Science and Technology
New York State Horticultural Society
Research Leaves
| 1984 (Jan.-July): |
Sabbatical with Dr. Joseph Eckert,
University of California, Riverside, studying benzimidazole
resistance in Penicillium species that attack citrus. |
| 1990 (Jan.-July): |
Sabbatical with Dr. Robert Spotts,
Oregon State University, at Oregon State's Mid-Columbia Experiment
Station in Hood River, studying identification methods and pathogenicity
of Penicillium species that attack pome fruits. |
Professional Assignments, Honors, and Awards
| 2003-present |
NE-1018 Multi-State Project
on Postharvest Physiology of Fruits |
| 1994-present |
NE-183 Regional Research Technical
Committee on Multi-disciplinary Evaluation of New Apple Cultivars;
Co-organizer of the project, 1994. |
| 1997-present |
Co-editor (with C.B. Watkins)
of Cornell Fruit Handling and Storage Newsletter |
| 1989-present |
Cornell University Fruit IPM
Committee |
| 1984-present |
Cornell University Fruit Program
Work Team |
| 1999-2001 |
NE-501 Regional Research Technical
Committee on Eradication, Containment and/or Management of Plum
Pox (Sharka Disease) |
| 1995-1997 |
Associate Editor for Plant
Disease |
| 1994-96: |
Principal investigator (U.S.)
for a U.S.-Hungarian Science & Technology Project, "Development
of Environmentally Sustainable Apple Pest Management Systems"
funded through USDA's Office for International Cooperation and
Development. |
| 1991-2001 |
Section editor (pome fruits)
for Fungicide and Nematicide Tests |
| 1989-1997 |
Northeast Sustainable Apple
Production Project, USDA Sustainable Ag. Program; Coordinator
for the New York portion of this 5-state project. |
| 1985-1990 |
NE-156 Regional Research Technical
Committee on Integrated Management of Apple Pests in the Northeast |
| 1983-86: |
Secretary-Treasurer, Vice-President,
then President of the Northeastern Division of the American
Phytopathological Society |
| 1982-1994 |
NE-87 Regional Research Technical
Committee on Control of Postharvest Decays of Fruits and Vegetables;
Secretary 1985-86, Chairman 1987-88. |
| 1978-1992 |
NE-14 Regional Research Technical
Committee on Virus and Virus-Like Diseases of Woody Deciduous
Fruit Crops; Secretary 1983, Chairman 1984. |
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