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Citrus Disease Diagnosis Resources

For questions about disease issues affecting citrus, commercial citrus producers and homeowners in Georgia are encouraged to contact their local UGA Extension Agent (

At UGA, there are currently three diagnostic labs that accept citrus samples from within Georgia:

  1. UGA Plant Pathology Plant Disease Clinic in Athens
    • Purpose: For routine citrus disease diagnosis. physical disease samples should be submitted through the UGA Extension system.
    • Website
    • Cost: Commercial citrus samples free if submitted through a county extension agent; $10 minimum fee per homeowner samples
    • Contact: Ansuya Jogi, Phone (706) 542-9157 or (706) 542-8987, E-mail , Fax (706) 542-1262
    • Address: UGA – Plant Pathology Athens Plant Disease Clinic, 2105 Miller Plant Sciences Bldg. 120 Carlton Street, Athens, GA 30602-7274
  2. UGA Plant Pathology Nematode Laboratory
    • Purpose: The Nematode Laboratory provides testing for all samples for nematode analysis
    • Website
    • Cost: $12 minimum fee per sample
    • Contact: Ganpati Jagdale, Phone: (706) 542-9144, Email , Fax (706) 542-5957
    • Address: UGA – Plant Pathology Nematode Laboratory, 2350 College Station Road, Athens, GA 30602-4356
  3. UGA Plant Molecular Diagnostic Laboratory
    • Purpose: The Molecular Diagnostic Laboratory offers fee-based, specialized diagnostic assays beyond the routine services provided by the UGA Plant Disease Clinics. For citrus, this laboratory provides testing for Citrus tristeza virus (CTV), citrus greening, and citrus canker.
    • Website
    • Informational Video:
    • Cost: varies by assay
    • Contact: Emran Ali, Phone (229) 386-7230 Email , Fax (229) 386-7285
    • Address: Plant Molecular Diagnostic Lab, Department of Plant Pathology, Tifton, CAES Campus, Plant Science Building, 115 Coastal Way, Tifton, GA 31794