SPDN       
Name Address Contact
R.Charudattan
Director		 Plant Disease Clinic
U.F.,Bldg.,
78 Mowry Road,
P.O.Box 110830
Gainesville
FL 32611-083
 Phone:352-392-1795
Fax:352-392-3438
http://plantpath.ifas.ufl.edu/pdc/Default.htm
GPDN       
Name Address Contact
Joy Pierzinski

Judy O' Mary		 Kansas State University,
Plant Disease Diagnostic Lab,
4032 Throckmorton Hall,
Manhattan,
KS 66506		 Phone:785-532-5810
Fax:785-532-5692
Email:clinic@plantpath.ksu.edu

http://www.oznet.ksu.edu/path-ext/

All the labs in GPDN are at:
http://www.planthealth.info/diag_samp_where.htm
WPDN       
Name Address Contact
Timothy Tidwell

California Department of Food and Agriculture, 3294 Meadowview Road
Sacramento, CA 95832
Attn: Diagnostics Timothy Tidwell

  Phone:  916-262-1100

Plant Pest Diagnostics Center

WPDN Director: Rick Bostock, UC Davis
Dept. of Plant Pathology
University of California
One Shields Ave.
Davis, CA   95616
              530-752-0308       
NEPDN       
Name Address Contact
Karen Snover Clift
Director		 Plant Disease Diagnostic Lab / Plant Pathology,
329 Plant Science,
Cornell University,
Ithaca,
NY 14853
Phone:602-255-3284
Fax:602-255-7850

http://plantclinic.cornell.edu/Default.htm
NCPDN       
Name Address Contact
Jay Byrne 101 Center for Integrated Plant Systems,
East Lansing,
MI 48824-1311		 Phone:517-355-4536
Fax:51-432-0899

http://www.plantpathology.msu.edu/

Southern Plant Diagnostic Network   1453 Fifield Hall Gainesville FL 32611