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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

Post-doctoral Scholar

Lisa Jones

Lisa Jones

Faculty Research Assistants/Associates

John Bassinette 
John Bassinette

Stephanie HeckertStephanie Heckert

 

 

Graduate Students

Jade FlorenceJade Florence

Teaching

BOT 453/553 Plant Disease Diagnosis

Related Links

NEWPacific 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. 2014. Pacific Northwest Plant Disease Management Handbook. Corvallis, OR: Oregon State University.

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.

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.

Pscheidt, J.W. and J.P. Bassinette. 2013. Bactericides for management of bacterial blight of lilac, 2012. PDMR 7:OT011.

Pscheidt, J.W. and J.P. Bassinette. 2013. Efficacy of fungicides for management of grape powdery mildew, 2012. PDMR 7:SMF032.

Pscheidt, J.W. and J.P. Bassinette. 2013. Fungicide management of blueberry fruit rots, 2012. PDMR 7:SMF031.

Pscheidt, J.W. and J.P. Bassinette. 2013. Evaluation of materials for management of mummy berry, 2012. PDMR 7:SMF030.

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

Pscheidt, J.W., Bell, N., Olsen, J. L., and Castagnoli, S. Revised September 2010. Managing diseases and insects in home orchards. Oregon State University Extension Service. EC 631.

Pscheidt, J.W. 2009. Plant Disease. Chapter 19. In Chalker-Scott, L. (editor). 2009. Sustainable Landscapes and Gardens: Good Science - Practical Application. Good Fruit Grower Publishing.

Pscheidt, J. W., Grimaldi, P, and Penhallegon, R. 2008. The Eastern Filbert Blight Epidemic in the Pacific Northwest : Survey vs. Biology. Proceedings of the Nut Growers Society of Oregon , Washington and British Columbia . 93:38-50.

Pscheidt, J.W. 2008. Plant Disease module in Langellotto, G. 2008. The Online Master Gardener Course. Oregon State University Extension and Oregon State University Extended Campus.

Parke, J., Pscheidt, J.W ., Regan, R., Hedberg, J. and Grunwald, N. 2008. Phytophthora Online Course: Training for Nursery Growers. Oregon State University Extended Campus. Currently available at ( http://oregonstate.edu/instruct/dce/phytophthora/ )

Kaiser, C., Pscheidt, J.W., Walton, V. and Skinkis, P. 2008. How to reduce the risk of pesticide resistance in winegrape pests in Oregon . Oregon State University Extension Service. EM 8968.

Goheen, E. M., Hansen, E., Kanaskie, A., Osterbauer, N., Parke, J., Pscheidt, J.W. and Chastagner, G. 2006. Sudden Oak Death and Phytophthora ramorum . A Guide for Forest Managers, Christmas Tree Growers, and forest-tree nursery operators in Oregon and WAshington . Oregon State University Extension Service. EM 8877.

Parke, J., Pscheidt, J.W. and Linderman, R. 2003. Phytophthora ramorum . A Guide for Oregon Nurseries. Oregon State University Extension Service. EM 8840.