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United States Department of Agriculture

Agricultural Research Service

Dr. Timothy C. Paulitz
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Dr. Timothy C. Paulitz

Research Plant Pathologist


University of California, Riverside. PhD in Plant Pathology, 1984.

California State Polytechnic University, Pomona. BS in Botany and Plant Pathology,  1979.                                            


2000-present. USDA-ARS Root Disease and Biological Control Research Unit, Pullman, WA. Research Plant Pathologist.

1994-2000. Dept. Plant Science, Macdonald Campus of McGill University, Ste. Anne de Bellevue, Quebec, Canada. Associate Professor.

1989-1994 Dept. Plant Science, Macdonald Campus of McGill University, Ste. Anne de Bellevue, Quebec, Canada. Assistant Professor.

1987-1989. USDA-ARS Horticultural Research Laboratory. Postdoctoral Research Associate.

1984-1987. Department of Plant Pathology and Weed Science, Colorado State University. Visiting Assistant Professor.

 Professional Societies:

American Phytopathological Society

Canadian Phytopathological Society

Mycological Society of America


Expertise and Scientific Interests:

  • Epidemiology and ecology of fungal and nematode soilborne plant pathogens- Fusarium Rhizoctonia, Pythium Pratylenchus, and Heterodera.
  • Genetic diversity of fungal root pathogens on cereals, brassica and vegetable crops.
  • Cultural mananagement of root diseases of cereals.
  • Interactions of microbial communities and natural disease suppression in soils.

Current Research:

Diversity of Rhizoctonia groups in wheat in rotation with irrigated onions and peas

Temporal dynamics of Pythium and Rhizoctonia in eastern Washington soils, using quantitative PCR

Survey of Rhizoctonia species in wheat across the US

Natural decline of Rhizoctonia bare patch under continuous no-till, and role of microbial communities

Identification of resistance to Fusarium crown rot in wheat

Survey for cereal cyst nematode across eastern Washington, and evaluation of cultivars for resistance.

Acid soils and aluminum toxicity to wheat in Spokane and Latah counties.

Management of Rhizoctonia root rot with reduction of the greenbridge

Updated October 2011

Current ARS Cooperative Research

Last Modified: 12/14/2011
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