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Plant Pest Diagnostics Center

Tim Tidwell

Timothy E. Tidwell

former Program Supervisor, current Primary State Plant Pathologist

Plant Pest Diagnostics Branch, California Department of Food & Agriculture
3294 Meadowview Road, Sacramento, CA 95832-1448, U.S.A.
916-262-1132 office, 916-262-1190 fax, ttidwell@cdfa.ca.gov

 

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Curriculum vitae

Education

  • Master of Science (Plant Pathology) - University of California, Davis. March 1977: Thesis: Purification and Biological Activity of Virus-specific Intraplastidial Particles of Tobacco Mosaic Virus U-5 Strain (T.A. Shalla, Advisor).
  • Bachelor of Science (Plant Science) - California State University, Sacramento, June 1973;

Employment

  • 2012-present Primary State Plant Pathologist
  • March 2004-2012 Agricultural Program Supervisor (Supervision of Plant Pathology, Nematology, Botany, and Seed Science Programs of PPDC)
  • March 2002-2004 Senior Plant Pathologist, Diagnostician, Supervisor (Supervision of PPDC Seed Laboratory)
  • July 1999-March 2002 Senior Plant Pathologist, Diagnostician, Specialist (Plant Pathologist, PPDC Mycology & Seed Pathology)
  • November 1995-July 999 Associate Plant Pathologist, Diagnostician (Plant Pathologist, PPDC Mycology & Seed Pathology)
  • November 1992- November 1995 Associate Environmental Research Scientist California Department of Pesticide Regulation (Pest Management & Analysis & Planning)
  • October 1979-October 1992 Associate Plant Pathologist, Diagnostician CDFA Plant Pathology Laboratory, Mycology
  • July 1978- October 1979 Plant Pathologist I, (Dutch Elm Disease Pathologist) CDFA Plant Pathology, Dutch Elm Disease Laboratory
  • July 1977-July 1978 Agricultural Biological Technician II CDFA Plant Pathology Laboratory, Virology
  • March 1977-July 1977 Post Graduate Researcher UCD Plant Pathology Department
  • October 1968-September 1974 Sears Roebuck: Internal Security & Auditing, Credit Department, Customer Service (Complaint) Department, Hard line and Soft line product sales.

Publications

Articles in Refereed Journals

  1. Adams, D., Tidwell, T.E., J. Richey, and H. Wells. 1990. Effect of Nursery-produced Endomycorrhizal inoculum on Growth of Redwood Seedlings in Fumigated Soil. Tree Plantersí Notes 3:7-11.
  2. Hernandez, J.R., Palm-Hernandez, M.E., and T.E. Tidwell, 2002. First Report of Puccinia vincae on Vinca spp. In California. Plant Disease 86:75.
  3. Koike, S.T., Tidwell, T.E., and K.L. Kosta. 1988. First Report of Powdery Mildew (Oidiopsis taurica) of Gazania. Plant Disease 72:546.
  4. Koike, S.T., Tidwell, T.E., and D.G. Fogle. 1991. Anthracnose (Colletotrichum orbiculare) of Greenhouse-grown Watermelon Transplants in California. Plant Disease 75: 644.
  5. Mayhew, D.E. and T.E. Tidwell. 1978. Palm Mosaic. Plant Disease Reporter 62:803-806.
  6. Nesbitt, R.B., Tidwell, T.E., Stipes, R.J., and G.J. Griffin. 1999. First Report of Mimosa Wilt disease of Silk Tree in California caused by Fusarium oxysporum f. sp. perniciosum. Plant disease 83:487.
  7. Raabe, R.D. and T.E. Tidwell.1988. Downy Mildew of Pansy in California. American Phytopathological Society Annual Meeting Abstracts of Presentations #811.
  8. Scheck, H.J., Fogle, D.G., and T. E. Tidwell. 2003. First Report of Botryotinia Blight of Asiatic Hybrid Lily Caused by Botryotinia sphaerosperma in North America. Plant Disease 87:1396.
  9. Sims, K.F., Tidwell, T.E., and D.G. Fogle. 1991. First Report of Ulocladium cucurbitae on cucumber in California. Plant Disease 75:863.
  10. Tidwell, T.E., Kosta, K.L., and J.C. Henderson. 1984. Root Rot of Western Sword Fern Caused by Phytophthora cinnamomi in California. Plant Disease 68:536.
  11. T.E. Tidwell, Krass, C.J., and R.J. Sava. 1983. Pathogenicity of Ceratocystis ulmi isolates from Resistant Host Trees in California. Plant Disease 67:511-513
  12. Tidwell, T.E. and R.J. Sava. 1982 Isolation of Ceratocystis ulmi from Deep Annual Rings of Elms in California. Plant Disease 66:1016-1018.
  13. Watson, T., Tidwell, T.E., and D.G. Fogle. 1991. Smut of Manchurian Wild Rice Caused by Ustilago esculenta in California. Plant Disease 75:1075.

Chapters in Edited Volumes

  1. Adams, D., Tidwell, T.E., and S. Frankel. 1998. Chronicle of Pine Pitch Canker in California. In Current and Potential Impacts of Pitch Canker in Radiata Pine. Proceedings of the IMPACT Monterey Workshop. Edited by Michael Devey, Colin Matheson, and Thomas Gordon. CSIRO. 120 pp. ISBN 0 643 063145.

Other Relevant Publications

  1. Davidson, N.A., Wales, P.C., Tidwell, T.E., Braun, A.L., Broome, J.C., Akers, P\R.P., and A.W. Fabre. 1995. Evaluation of Copper- and Tributyltin-containing Compounds. State of California Environmental Protection Agency, Department of Pesticide Regulation Publication #95-07, Sacramento. 77 Pages.
  2. Simmons, S.E. Tidwell, T.E., and T.A. Barry. 1996 Overview of Pest Management Policies, Programs, and Practices in Selected California Public School districts. State of California Environmental Protection Agency, Department of Pesticide Regulation Publication #96-01, Sacramento. 68 Pages
  3. T.E. Tidwell, 1999. Testing Seed in California for Tilletia indica. Proceedings of the International Seed Testing Association (ISTA) Seed Health Symposium, Ames, Iowa.
  4. T.E. Tidwell 1986. Index of Diseases and Microorganisms Associated with California Oak trees. CDFA, Sacramento. 103 pages.
  5. Tidwell, T.E. 1990. Index of Diseases and Microorganisms Associated with Eucalyptus in California. CDFA, Sacramento. 55 pages.
  6. T.E. Tidwell 1996 Index of Phanerogamic Parasites of California, Part I, Parasite-Host Index. California Plant Pest and Disease Report. Vol. 15 No. 1-2:23-64.
  7. Tidwell, T.E. 1996 Index of Phanerogamic Parasites of California, Part II, Host-Parasite Index. California Plant Pest and Disease Report. Vol. 15 No. 3-4:97-146.
  8. Tidwell, T.E., Blomquist, C., Umesh, K.C., Osterbauer, N., Putnam, M., & Fallacy, J. 2007 Phytophthora ramorum in the USA: A Timeline of Knowledge and Events. Proceedings of the National Plant Diagnostic Network, January 2007 National Meeting, Orlando, FL.
  9. Tidwell, T.E. 2008. Japanese Dodder, a New Phanerogamic Pathogen in California. National Plant Diagnostic Network News (2008) 3:7–10.
  10. Blomquist, C.L., Rooney-Latham, S. & Tidwell, T . 2009. “Graduate Level Diagnostics Course taught by NPDN Diagnosticians.” Poster presentation for the Second National Meeting of the National Plant Diagnostic Network. Dec. 6-10, 2009. Miami, FL.
  11. Thomas, C.S., Cresswell, T., Luke, E., Nutter, F.W., Lanier, W., Durgy, R., Byrne, J., Tidwell, T., and M.A. Draper. 2007.  “Expansion of data collection capabilities for the National NPDN Database.” Poster presentation for the National Plant Diagnostics Network Meeting, Orlando, FL. January 28–31, 2007.

Awards

  • 1998 CDFA Award for Outstanding Achievement for development of the CDFA Seed Health Testing Program
  • 1996 CDFA Award for Outstanding Achievement in the CDFA/USDA Karnal Bunt Project
  • 1996 CAL/EPA Customer Service Award for project: Evaluation of Practices resulting in Copper and Tributyltin Contamination of Water Treatment Plants
  • 1994 CAL/EPA Customer Service Award for project: Overview of Pest Management Policies, Programs, and Practices in Selected California Public School Districts
  • 1980 CDFA Award for Outstanding Achievement in the CDFA/USDA Dutch Elm Disease Project

Professional Service

  • 2007-present, Member, National Plant Diagnostic Network Diagnositcs Committee
  • 2007-present, Member, National Plant Diagnostic Network Pest Database Committee
  • 2002-2005 Member, Sudden Oak Death Project, Nursery Committee
  • 2002-present National Plant Board Representative to National Seed Health Initiative
  • 2002-present USDA Certified Auditor, National Seed Health Initiative
  • 2001-2003 Member, Sudden Oak Death Project, Monitoring Committee
  • 1984-1986 Member, American Phytopathological Society (APS) Diagnostics Committee
  • 1988-1990 Member, California Pine Pitch Canker Task Force
  • 1986-1987 Plant Pathologist, California Multiagency Agroforestry Project
  • 1983-1984 Associate Editor, California Plant Pest and Disease Report

Administrative Service

  • March 2004 - Present Agricultural Program Supervisor (Supervision of Plant Pathology, Nematology, Botany, and Seed Science Programs of PPDC)
  • March 2002- 2004 Supervisor of CDFA PPDC Seed Laboratory & Plant Pathology Laboratory
  • 1987-1992 Steward of CDFA-CA Dept. Forestry (CDF) Interagency Agreement for Forest Pathology Laboratory Support

References

Provided upon request