Disease Diagnosis Support

We provide farm advisors with diagnosis support for warm season vegetables and field crops (including grains, vegetables, cotton, sunflower, and legumes). This service covers Kern, Tulare, Fresno, Kings, Merced, San Joaquin, Sacramento, Solano, Yolo, Colusa, Yuba, Sutter, Siskiyou, Modoc and Lake Counties.

To submit a sample, please fill out the specimen information form:

Printable version: Plant Disease Specimen Information Form

Fillable version: FILLABLE Plant Disease Specimen Information Form

Sample submission:

Drop off: Hutchison Hall rm 253. Ask for Beth, or leave in the SAMPLE SUBMISSION fridge. Diagnosis forms are attached to the fridge. Please EMAIL Cassandra at clswett@ucdavis.edu to let me know you have submitted a sample.

If no one is is rm 253, please leave samples with Maria Tuccori, rm 354 and EMAIL Cassandra at clswett@ucdavis.edu to let me know you have dropped it off. Diagnosis forms are on the door of 253, or you can email it to us separately.

Mail: Package samples in paper or plastic, well padded.  Include a specimen information form or email the fillable form to Cassandra at clswett@ucdavis.edu

Mail to:
Cassandra Swett
Department of Plant Pathology
University of California, Davis
1 Shields Ave
Davis, California, 95616