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Jay W. Pscheidt

Jay Pscheidt

Professor;
Extension Plant Pathology Specialist
Ph.D., 1985, University of Wisconsin, Madison
pscheidj@science.oregonstate.edu

 

Office/Lab: Cordley 1089b
Phone: 541-737-3472/5539

 

 

 

 

 

 

 

Research and Extension Area

Develop applied diagnostic and control programs for plant diseases of tree fruits, nuts, berries, grapes, ornamentals/nursery, Christmas trees and turf.

Description of Research

Many fungal and bacterial diseases are a constant problem for fruit and ornamental/nursery production in Oregon. Pathogen biology and life histories are studied in the field and lab to improve disease control recommendations. Screening biologicals, pesticides, or cultural practices effective against these organisms is an ongoing need valuable to Oregon's growers. Information is delivered to clientele using the latest techniques and technologies including satellite systems and the World Wide Web.

Research Group Members

Faculty Research Assistants/Associates

John Bassinette 
John Bassinette

Stephanie HeckertStephanie Heckert

 

 

Graduate Students

 

Lauri Lutes
Lauri Lutes

Teaching

BOT 453/553 Plant Disease Diagnosis

Related Links

Pacific Northwest Plant Disease Management Handbook

The Eastern Filbert Blight Homepage 

Fruit and Ornamental Disease Management Testing Program

Phytophthora Online Course:Training for Nursery Growers

Publications

Pscheidt, J.W. and Ocamb, C. M. Senior editors. 2016. Pacific Northwest Plant Disease Management Handbook. Oregon State Extension Service. 848 pp.

Florence, J. and Pscheidt, J. W. 2016. Overwintering stages of pseudosclerotia development for Monilinia vaccinii-corymbosi, causal agent of mummy berry disease on highbush blueberry in North America. Plant Health Progress doi:10.1094/PHP-BR-16-0003.

Heckert, S., Pscheidt, J. W., and Cluskey, S. A. 2016. Evaluation of Chipped Cankers for Management of Eastern Filbert Blight. Plant Health Prog. doi:10.1094/PHP-RS-16-0037.

Pscheidt, J.W. 2016. Bacterial Canker. in Caruso, F. L. editors. Compendium of Blueberry, Cranberry, and Lingonberry Diseases and Pests. 2nd Edition. APS Press, St. Paul, MN.

Pscheidt, J.W. and J.P. Bassinette. 2016. Evaluation of fungicides for management of apple diseases on Braeburn, 2015. PDMR 10:PF009.

Pscheidt, J.W. and J.P. Bassinette. 2016. Evaluation of fungicides for management of pear scab and Pacific Coast pear rust, 2015. PDMR 10:PF010.

Pscheidt, J.W., J.P. Bassinette and S. Heckert. 2016. Evaluation of fungicides for management of mummy berry, 2015. PDMR 10:SMF026.

Pscheidt, J.W., J.P. Bassinette and L. A. Jones. 2016. Fungicide management of blueberry fruit rots, 2015. PDMR 10:SMF027.

Pscheidt, J.W. and J.P. Bassinette. 2016. Efficacy of fungicides for management of grape powdery mildew on Pinot Noir, 2015. PDMR 10:SMF028.

Pscheidt, J.W. and J.P. Bassinette. 2016. Efficacy of fungicides for management of grape powdery mildew on Riesling, 2015. PDMR 10:SMF029.

Pscheidt, J.W. and J.P. Bassinette. 2016. Efficacy of fungicides for management of grape bunch rot, 2015. PDMR 10:SMF030.

Pscheidt, J.W., J.P. Bassinette and L. A. Jones. 2016. Comparison of fungicides for management of cherry diseases, 2015. PDMR 10:STF009.

Bouska, C. and Pscheidt, J.W. 2015. Beware of Boxwood Blight.  Friends of Shore Acres.

Florence, J. and Pscheidt, J.W. 2015. Mummy Berry Management in the Pacific Northwest. EM 9117.

Hadziabdic D, Wadl PA, Staton ME, Klingeman WE, Moulton JK, Pscheidt JW, Wiggins GJ, Grant JF, Lambdin PL, Windham MT, Faccoli M, Merten PR, Trigiano RN. 2015. Development of microsatellite loci in Pityophthorus juglandis, a vector of thousand cankers disease in Juglans spp. Conserv. Genet. Resour. 7(2):431-433. DOI: 10.1007/s12686-014-0388-0.

Pscheidt, J. W. 2015. Managing EFB in Mature Orchards. Proceedings of the Nut Growers Society of Oregon, Washington and British Columbia. 100:43-52.

Pscheidt, J.W., Stoven, H., Castagnoli, S. and Renquist, S. Revised April 2015. Managing diseases and insects in home orchards. Oregon State University Extension Service. EC 631.

Wilcox, W. F., Ellis, M. A., Rawnsley, B., Rossman, A., and Pscheidt, J.W. 2015. Phomopsis Cane and Leaf Spot. in Wilcox, W. F., Gubler, W. D. and Uyemoto, J. K.. editors. Compendium of Grape Diseases, Disorders and Pests. 2nd Edition. APS Press, St. Paul, MN. 232pp.

Zerillo MM, Caballero IJ, Woeste K, Graves AD, Hartel C, Pscheidt JW, Tonos J., Broders K., Cranshaw W., Seybold SJ, and Tisserat, N. 2014. Population Structure of Geosmithia morbida, the Causal Agent of Thousand Cankers Disease of Walnut Trees in the United States. PLoS ONE 9(11): e112847. doi:10.1371/journal.pone.0112847

Pscheidt, J. W., and Harper, N. 2014. Progression of symptoms on blueberry infected with Blueberry shock virus. Plant Health Progress doi:10.1094/PHP-RS-13-0121.

Pscheidt, J.W. and Newcombe, G. 2014. Rusts. in Benson, M. and Linderman, R. editors. Compendium of Rhododendron and Azalea Diseases and Pests. 2nd Edition. APS Press, St. Paul, MN. 136pp.

Pscheidt, J. W. 2014. Jefferson meets EFB in Oregon. Proceedings of the Nut Growers Society of Oregon, Washington and British Columbia. 99:75-78.

Hadziabdic, D., Vito, L. M., Windham, M. T., Pscheidt, J.W., Trigiano, R.N. and Kolarik, M. 2014. Genetic differentiation and spatial structure of Geosmithia morbida, the causal agent of thousand cankers disease in black walnut (Juglans nigra). Current Genetics 60: 75-87. DOI 10.1007/s00294-013-0414-x.

Heckert, S., Pscheidt, J.W., and Cluskey, S.A. 2014. Disease incidence and ascospore dispersal from cut hazelnut branches colonized by Anisogramma anomala. Plant Disease 98:834-838.

Pscheidt, J. W., Heckert, S. and Cluskey, S. A. 2013. Jefferson hazelnut meets eastern filbert blight in western Oregon. Phytopathology 103:S3.15

Heckert, S., Pscheidt, J.W., and Stone, J.K. 2013. A quick and simple method to evaluate Anisogramma anomala Ascospore Viability. Online. Plant Health Progress. doi:10.1094/PHP-2013-0509-09-RS.

Pscheidt, J.W. May 2013. Scouting for Grape Powdery Mildew. EM 9067.

Moyer, M., Grove, G. and Pscheidt, J.W. 2013. Botrytis Bunch Rot. In Moyer, M.M. and O’Neal, S.D. 2013. Field Guide for Integrated Pest Management in Pacific Northwest Vineyards. PNW 644.

Moyer, M., Grove, G. and Pscheidt, J.W. 2013. Powdery Mildew. In Moyer, M.M. and O’Neal, S.D. 2013. Field Guide for Integrated Pest Management in Pacific Northwest Vineyards. PNW 644.

Grove, G. and Pscheidt, J.W. 2013. Fungicide Resistance Management. In Moyer, M.M. and O’Neal, S.D. 2013. Field Guide for Integrated Pest Management in Pacific Northwest Vineyards. PNW 644.

Tisserat, N., Cranshaw, W., Putnam, M. L., Pscheidt, J., Leslie, C. A., Murray, M., Hoffman, J., Barkley, Y., Alexander, K., and Seybold, S. J. 2011. Thousand cankers disease is widespread in black walnut in the western United States. Online. Plant Health Progress doi:10.1094/PHP-2011-0630-01-BR.

Pscheidt, J. W. 2011. Disease progress of thousand cankers disease in Oregon. Phytopathology 101:S146

Stockwell, V., Shaffer, B.T., Henkels, M.D., Pscheidt, J.W., and Loper, J.E. 2011. Factors influencing efficacy of plastic shelters for control of bacterial blight of lilac. Phytopathology. 101(6S):172.

Spotts, R. A., Olsen, J., Long, L. and Pscheidt, J.W. May 2010. Bacterial Canker of Sweet Cherry in Oregon. EC 9007-E