Potato Diseases
Department of Plant Pathology
Washington State University
P.O. Box 646430
Pullman, WA 646430

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Dennis A. Johnson - Plant Pathologist
Phone# (509) 335-3753
Fax# (509) 335-9581
Email: dajohn@wsu.edu



Tom Cummings - Ag. Research Tech.
Phone# (509) 335-1998
Email: tfc@wsu.edu

Current late blight forecast and management recommendations

PHOTO GALLERY	LINKS TO ABSTRACTS OF PUBLISHED PAPERS	DISEASE MANAGEMENT ARTICLES
Late blight tuber rot, x-section Late blight stem legion Sporulation on late blight stem lesion Late blight peeled tuber	Potato Late Blight in the Columbia Basin: An Economic Analysis of the 1995 Epidemic Postinfection Activity Of Selected Late Blight Fungicides Cost of Fungicides used to Manage Potato Late Blight in the Columbia Basin Relative Resistance of Potato Clones in Response to New and Old Populations of Phytophthora infestans Characterization of the phytophthora infestans Population in the Columbia Basin of Oregon and Washington from 1992 to 1995 Expansion of Potato Late Blight Forcasting Models for the Columbia Basin of Wahington and Oregon Aggresiveness of Isolates of phytophthora infestans from the Columbia Basin of Washington and Oregon Fungicide Application for Late Blight Management: A Boom attached to a Center Pivot Irrigation System Competitive Fitness of Phytophthora infestans Isolates Under Semiarid Field Conditions Vegatative Compatibility and Pathogenicity of Verticillium dahliae from Spearmint and Peppermint Survival of detached sporangia of Phytophthora infestans exposed to ambient, relatively dry atmospheric conditions Control of potato tuber rots caused by Oomycetes with foliar applications of Phosphorous Acid Survival of Phytophthora infestans in Surface Water Effects of Tuber Depth and Soil Moisture on Infection of Potato Tubers in Soil by Phytophthora infestans	Blight management for Columbia Basin Late Season Management of Late Blight in Columbia Basin Potato Late Blight: How long can sporangia survive? Fungicide Application for Management of Potato Late Blight Verticillium Wilt Development of wilt in mint in response to infection by two pathotypes of Verticillium dahliae and co-infection by Pratylenchus penetrans Postinfection activity of selceted potato late blight fungicides Managing potato leaf roll

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Revised 3/07/06
If you have any questions or comments email dajohn@wsu.edu