Dr. Megan Dewdney
Contact Information
Citrus Research and Education Center
Lake Alfred, Florida
Plant Pathology & Extension Specialist
Phone: 863.956.1151 ext. 1267
Fax (863) 956-4631
Email: mmdewdney@crec.ifas.ufl.edu
Education
Ph.D. Plant Pathology, New York State Agricultural Experiment Station (NYSAES), Cornell University, Geneva NY
M.Sc. Plant Science with specialization in Plant Pathology, McGill University, Montréal PQ, Canada
B.Sc. Plant Science, University of British Columbia, Vancouver BC, Canada
Past Positions
Graduate Research Assistant, 2001-2007. NYSAES Cornell University, Geneva NY
Graduate Research Assistant, 1998-2000. McGill University, Montréal PQ
Research
Extension responsibilities focus on integrated management and control measures for citrus canker and citrus greening with additional responsibilities for fungal pathogens. Research projects include better understanding the biology of both bacterial and fungal pathogens to lead to enhanced control.
Refereed Papers
Dewdney, M.M., Biggs, A.R., and Turechek, W.W. 2007. A statistical comparison of the blossom blight forecasts of MARYBLYT™ and Cougarblight with receiver operating characteristic (ROC) curve analysis. Phytopathology 97: 1164-1176.
Dewdney, M.M., Charest, J., Paulitz, T.C., and Carisse, O. 2003. Multivariate analysis of apple cultivar susceptibility to Venturia inaequalis under greenhouse conditions. Canadian Journal of Plant Pathology 25(4): 387-400.
Carisse, O. and Dewdney, M.M. 2002. A review of non-fungicidal approaches for the control of apple scab. Phytoprotection: 83: 1-29.
Charest, J., Dewdney M., Paulitz, T., Philion V., and Carisse, O. 2002. Spatial distribution of Venturia inaequalis airborne ascospores in orchards. Phytopathology 92: 769-779.
Non-Refereed Proceedings
Dewdney, M.M., Seem, R.C. and Aldwinckle, H.S. 2008. The effect of apple blossom age on populations of Erwinia amylovora on the stigma surface. Acta Horticulturea 793:99-104.
Dewdney, M.M., Svircev, A.M., Kim, W.-S., Seem, R.C. and Aldwinckle, H.S. 2008. How cool temperatures affect Erwinia amylovora populations on the apple stigma surface. Acta Horticulturea 793: 33-38.
Dewdney, M.M., Biggs, A.R., and Turechek, W.W. 2006. A statistical comparison of MARYBLYT™ and Cougarblight with sensitivity analysis. Acta Horticulturea 704: 171-176.
Charest, J., Dutilleul, P., Dewdney M., Paulitz, T., Philion V., and Carisse, O. 2000. Study of spatial distribution of Venturia inaequalis ascospores in a commercial apple orchard. IOBC wprs Bulletin 23: 191-198.
Dewdney, M., d'Estienne, B., Charest, J., Paulitz, T., and Carisse, O. 2000. Relative cultivar susceptibility to Venturia inaequalis ascospores under greenhouse conditions. IOBC wprs Bulletin 23: 199-205.
Trade Journal
Graham, J.H. and Dewdney, M.M. 2010. Management Recommendations for Citrus Canker in 2010. Citrus Industry 91(3). PDF
Dewdney, M.M. 2010. Fungicide resistance: Why it happens and how it may affect you. Citrus Industry 91(3). PDF
Dewdney, M.M. 2009. Fungi on my mind. Citrus Industry 91(2): 19-20. PDF
Dewdney, M.M. 2010. Citrus black spot. Citrus Industry 91(1): 21. PDF
Dewdney, M.M. 2009. An update on plant pathology research funded by the Florida citrus production research advisory Council. Citrus Industry 90(12): 18-21. PDF
Dewdney, M.M. and J. Graham. 2009. Cooperative Producers keep greening disease under control. Citrus Industry 90 (9): 3-8. PDF
Dewdney, M.M. and Timmer, L.W. 2009. Citrus production and diseases in Ghana. Citrus Industry 90(5): 10-13. PDF
Graham, J.H. and Dewdney, M.M. 2009. Management Recommendations for Citrus Canker in 2009. Citrus Industry 90(2): 22-25, 31. PDF
Dewdney, M.M. 2009. Fungal Foliar Diseases: A Refresher. Citrus Industry 90(2): 18-21. PDF
Spann, T.M., L.G. Albrigo, J.H. Graham, M.M. Dewdney, M. Ritenour and J.P. Syvertsen. 2009. South China HLB Tour and the International Citrus Congress 2008. Citrus Industry 90 (1): 20-23. PDF
Extension Articles
Dewdney, M.M., Roberts, P.D., Graham, J.H., Chung, K.-R. and Zekri, M. 2009. Homeowner fact sheet: Citrus canker (PP194). Gainesville: University of Florida Institute of Food and Agricultural Sciences. PDF
Dewdney, M.M. and Timmer L.W. 2009. Alternaria brown spot (PP152). Gainesville: University of Florida Institute of Food and Agricultural Sciences. PDF
Dewdney, M.M. and Yates, J.D. 2009. Foliar fungal disease management for commercial citrus groves (PP270). Gainesville: University of Florida Institute of Food and Agricultural Sciences. PDF
Dewdney, M.M. and Yates, J.D. 2009. Phytophthora management for commercial citrus groves (PP269). Gainesville: University of Florida Institute of Food and Agricultural Sciences. PDF
Dewdney, M.M. and Yates, J.D. 2009. Phytophthora-related diseases identification sheet (PP262). Gainesville: University of Florida Institute of Food and Agricultural Sciences. PDF
Dewdney, M.M. and Yates, J.D. 2009. Citrus foliar fungal diseases identification sheet (PP261). Gainesville: University of Florida Institute of Food and Agricultural Sciences. PDF
Dewdney, M.M., Yates, J.D., Brlansky, R.H., Spann, T.M. and Rogers, M.E. 2009. Citrus greening, blight and tristeza comparison identification sheet (PP263). Gainesville: University of Florida Institute of Food and Agricultural Sciences. PDF
Dewdney, M.M., Yates, J.D., Rogers, M.E. and Spann, T.M. 2009. Exotic diseases of citrus identification sheet (PP264). Gainesville: University of Florida Institute of Food and Agricultural Sciences. PDF
Dewdney, M.M. and Aldwinckle, H.S. 2008. Blossom blight epidemiology. New York Fruit Quarterly 16:17-22.
Yates, J.D., Dewdney, M.M. and Brlansky, R.H. 2008. Exotic citrus diseases: Early detection is the solution to protecting Florida citrus (CH202). Gainesville: University of Florida Institute of Food and Agricultural Sciences. PDF
Yates, J.D., Spann, T.M., Rogers, M.E., and Dewdney, M.M. 2008. Citrus Canker: An Established Infection in the Florida Citrus Industry (CH199). Gainesville, FL: University of Florida, IFAS. PDF
Yates, J.D., Spann, T.M., Rogers, M.E., and Dewdney, M.M. 2008. Citrus Greening: A Serious Threat to the Florida Citrus Industry (CH198). Gainesville, FL: University of Florida, IFAS. PDF
