Western Plant Diagnostic Network




About WPDN


The Western Plant Diagnostic Network (WPDN) is a regional member of the larger National Plant Diagnostic Network (NPDN). NPDN consists of five regional plant diagnostic centers located at Cornell University (NEPDN); Michigan State University (NCPDN); Kansas State University (GPDN); the University of Florida (SPDN); and the University of California, Davis in partnership with the California Department of Food and Agriculture, Sacramento (WPDN). Each regional center coordinates data gathering, diagnostic collaboration, and other activities of member land grant institutions, national agencies and state departments of agriculture.

WPDN is a consortium of land grant institutions and state departments of agriculture throughout the western United States and U.S. territories in the Pacific that provide services for plant disease diagnosis, plant identification, and insect/pest identification. WPDN uses a common software interface to process diagnostic requests and share information among diagnostic laboratories.

The WPDN Brochure available here in Adobe Acrobat format



If you see suspicious samples in the field please contact one of the following
  • County Ag Commissioners (California) or county extension agent
  • State Diagnostic Lab
  • State Department of Agriculture
  • Cooperative Extension Specialist

WPDN Members


Alaska Department of Agriculture
American Samoa
Arizona Department of Agriculture
California Department of Food and Agriculture
Hawaii Department of Agriculture
Idaho Department of Agriculture
Republic of the Marshall Islands
CERIS, Purdue University
Nevada Department of Agriculture
New Mexico Department of Agriculture
New Mexico State University
Northern Marianas College
Oregon Department of Agriculture
Oregon State University
Oregon State University IPPC
Republic of Palau

Saipan
University of Alaska
University of Arizona
University of California, Statewide IPM
University of California, Davis
University of Guam
University of Hawaii
University of Idaho
University of Nevada
USDA/CSREES
USDA/APHIS
Utah State University
Washington State University
Washington Department of Agriculture
Western Regional IPM Center, Univ. of California, Davis



Current News


USDA Proposes to Allow Hass Avocados from Peru
2009-01-06
APHIS News Release

USDA to Begin Asian Longhorned Beetle Eradication Effort for Massachusetts Infestation
2009-01-06
APHIS News Release

USDA Announces No Significant Impact on Solid Waste Movement from Hawaii to Oregon
2009-01-05
APHIS News Release

New ABC TV Show Highlights Invasive Pests
2009-01-05
CDFA Press Release

Mediterranean fruit fly - Expansion of a Quarantine Area in San Diego, California
2008-12-22
SPRO Letter

Mexican fruit fly - Establishment of a Quarantine Area in Los Angeles, California
2008-12-22
SPRO Letter

Upcoming Events


Possible Citrus Greening Diagnostic Training for Insects and Plant Material from APHIS-PPQ CPHST
To Be Determined
If interested contact Karen Snover-Clift

Joint Meeting of the 55th Annual Soil Fungus Conference and 41st Annual California Nematology Workshop
Salinas, California
March 23-25, 2009
more...

International IPM Symposium
Portland, OR
March 24-26, 2009
More Info

Lepidoptera workshop
East and west coast events.
March 2009
Information and Registration

2009 International Miconia Conference
May 4-7, 2009
Conference Information