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PROFESSIONAL RESUME
Dennis A. Johnson
Professor/Plant Pathologist
Department of Plant Pathology
P. O. Box 646430
Washington State University
Pullman, Washington 99164-6430
Phone: (509) 335-3753 - Fax: (509) 335-9581
E-Mail: [email protected] Web Page: http://classes.plantpath.wsu.edu/dajohn/
I
EDUCATI0N
Formal Education
Institution
Degree
Pocatello High School
Brigham Young University
University of Minnesota
University of Minnesota
Diploma
B.S.
M.S.
Ph.D.
Year
l968
l973
l975
l978
Major Subjects
Bachelor of Science - Botany, Plant Physiology
Master of Science - Plant Pathology, Plant Physiology
Doctorate
- Plant Pathology, Plant Epidemiology
II
EMPLOYMENT
Dates
Position
Appointment
Address
1980 to
present
Ext. Plant Pathologist
Plant Pathologist
Professor
50% Extension
30% Research
20% Teaching
Dept. of Plant Pathology
Washington State Univ.
Pullman, WA
l978 to
1979
Assistant Professor of
Plant Pathology
100% Research
Vernon, TX
Texas Agri. Exp. Sta.
III
RESEARCH INTEREST
Plant Epidemiology
Disease Forecasting
Integrated Pest Management
IV
INTERNATIONAL EXPERIENCE
January 1989. Plant disease and agricultural advisor in Java, Indonesia. Invited by
Volunteers in Overseas Cooperative Assistance, Washington, D.C., and P.T. Dieng Djaya,
Kalianget, Indonesia
V
PROFESSIONAL AFFILIATIONS/AWARDS
American Phytopathological Society
American Phytopathological Society - Pacific Division
Canadian Phytopathological Society
Potato Association of America
Friend of the Mint Industry - 1994
VI
PUBLICATIONS
Journal Articles (Selected refereed articles)
Johnson, D.A. 2008. (Editor) Potato Health Management. Second Edition. APS Press. St.
Paul. MN.
Stevenson, W.R., James, R.V., Inglis, D.A., Johnson, D.A., Schotzko, R.T., and Thornton,
R.E. 2007. Fungicide spray programs for Defender, a new potato cultivar with resistance to
late blight and early blight. Plant Dis. 91:1327-1336.
Inglis, D.A., Brown, C.R., Gundersen, B.G., Porter, L.D., Miller J.S., Johnson, D.A.,
Lozoya-Saldana, H. 2007. Assessment of Solanum hougasii in Washington and Mexico as
a source of resistance to late blight. Amer. J. of Potato Res. 84:217-228.
Porter, L.D., and Johnson, D.A. 2007. Survival of sporangia of new clonal lineages of
Phytophthora infestans in soil under semiarid conditions. Plant Dis. 91:835-841.
Hamm, P.B., Cummings, T.F., and Johnson D.A. 2006. Comparison of deposition patterns
in two programs for applying protectant fungicides to potato stems and leaves for the
control of potato late blight. Amer. J. of Potato Res. 83:473-484.
Heilmann, L.J., Nitzan, N., Johnson D.A., Pasche, J.S., Doetkolt, C., and Gudmestad, N.C.
2006. Genetic variability in the potato pathogen Colletotrichum coccodes as determined by
amplified fragment length polymorphism and vegetative compatibility group analyses.
Phythpathology 96:1097-1107.
Johnson, D.A., Zhang, H., and Alldredge, J.R. 2006. Spatial pattern of Verticillium wilt in
commercial mint fields. Plant Dis. 90:789–797.
Johnson, D.A., and Atallah, Z.K. 2006. Timing fungicide applications for managing
Sclerotinia stem rot of potato. Plant Dis. 90:755-758.
Nitzan, N., Evans, M. and Johnson, D.A. 2006. Colonization of potato plants after aerial
infection by Colletotrichum coccodes, causal agent of potato black dot. Plant Dis. 90:9991003.
Nitzan, N., Tsror (Lahkim), L., and Johnson D.A. 2006. Vegetative compatibility groups
and aggressiveness of North American isolates of Colletotrichum coccodes, the casual
agent of potato black dot. Plant Dis. 90:1287-1292.
Porter, L.D., and Johnson, D.A., Cummings, T.F., 2006. Effects of soil-applied late blight
foliar fungicides on infection of potato tubers by Phytophthora infestans. Plant Dis. 90:964968.
Porter, L.D., Dusgupta, N., and Johnson, D.A. 2005. Effects of tuber depth and soil
moisture on infection of potato tubers in soil by Phytophthora infestans. Plant Dis. 89:146152.
Nitzan, N., Cummings, T.F., and Johnson, D.A. 2005. Effect of seed-tuber generation,
soilborne inoculum, and azoxystrobin application on development of potato black dot
caused by Colletotrichum coccodes. Plant Dis. 89:1181-1185.
Atallah, Z. K., Larget, B., Chen, X., and Johnson, D. A. 2004. High genetic diversity,
phenotypic uniformity, and evidence of outcrossing in Sclerotinia sclerotiorum in the
Columbia Basin of Washington State. Phytopathology 94:737-742.
Atallah, Z. K., and Johnson, D. A. 2004. Development of Sclerotinia stem rot in potato
fields in south-central Washington. Plant Dis. 88:419-423.
Geary, B., Hamm, P.B., and Johnson, D.A. 2004. Deposition and redistribution of
fungicides applied by air and chemigation for control of late blight in commercial potato
fields. Amer. J. of Potato Res. 81:305-315.
Johnson, D.A., Inglis, D.A., and Miller, J.S. 2004. Control of potato tuber rots caused by
oomycetes with foliar applications of phosphorous acid. Plant Dis. 88:1153-1159.
Porter, L.D., Inglis, D.A., and Johnson, D.A. 2004. Identification and characterization of
resistance to Phytophthora infestans in leaves, stems, flowers, and tubers of potato clones
in the Pacific Northwest. Plant Dis. 88:965-972.
Porter, L.D., and Johnson, D.A. 2004. Survival of Phytophthora infestans in surface water.
Phytopathology 94:389-387.
Johnson, D.A., Alldredge, J.R., Hamm, P.B., and Frazier, B.E. 2003. Aerial photography
used for spatial pattern analysis of late blight infection in irrigated potato circles.
Phytopathology 93:805-812.
Johnson, D.A., Martin, M., and Cummings, T.F. 2003. Effect of chemical defoliation,
irrigation water, and distance from the pivot on late blight tuber rot in center-pivot
irrigated potatoes in the Columbia Basin. Plant Dis. 87:977-982.
Johnson, D.A., Alldredge, J.R., and Hamm, P.B. 1998. Expansion of potato late bligbt
forecasting models for the Columbia Basin of Washington and Oregon. Plant Dis. 82:642645.
Johnson, D.A., Alldredge, J.R., and Vakoch, D.L, 1996. Potato late blight forecasting
models for the semiarid environment of south-central Washington. Phytopathology 86:480484.