OSU-Hermiston Plant Pathology Laboratory Testing Services

General diagnosis = $60

This service includes a thorough microscopic exam, moist chamber incubation, isolation onto selective and non-selective nutrient media (as needed), and identification of isolated fungi or bacteria to genus, when possible. Viruses will also be identified when possible. Note that some viruses require methods for identification that are not included in this fee. Call for additional information about this service.

Soil pH and total soluble salts = $10

This price is for soils submitted specifically for pH and total soluble salts measurement. Soil submitted with a plant sample will have these measurements taken, when requested, at no additional charge.

Ship samples to:

Kenneth Frost

Extension Plant Pathology Laboratory

2121 South First

Hermiston, OR 97838

Soil Fungus Assays

Fee Schedule per Soil Sample:

Pathogen

**Cost/sample 1-4 samples

**Cost/sample 5+ samples

Verticillium

$35

$33

Pythium

25

23

Fusarium

25

23

Phoma terrestris (Onion pink root)

30

28

Pythium, Fusarium spp., and Phoma terrestris

80

74

Pythium, Fusarium,

and Verticillium spp./ C. coccodes

85

79

** Prices listed are per soil sample. Please allow approximately 2-3 weeks for Pythium, Fusarium, and Phoma terrestris assays and 5 weeks for Verticillium/C. coccodes (black dot).

Metalaxyl-Resistant Pythium Soil and Culture Assay

The soil assay determines the percent of the total Pythium spp. present in the soil that are resistant to metalaxyl. A culture-based assay is used to determine if any of the Pythium spp. recovered from infected plant material are resistant to metalaxyl. The fee for these tests is $40

Silver Scurf and Black Dot Testing of Potato Tubers

Silver Scurf and black dot tuber assays are conducted on seed and market tubers. The fee for this service is $50 per lot.

Virus Testing

PCR Fee Schedule per Sample

# of Samples

# of Viruses to be Tested

1-4

5-24

1

$35

$30

2

40

34

3

45

38

4

50

42

5

55

44

6

60

48

Leaf samples are generally tested individually but may be tested in bulk (up to 5 leaves) for more economical testing of large numbers of samples. Please note: bulk testing is less able to detect low titers of virus. Call for special pricing of very large sample lots and to learn which viruses can be detected by this method.

For further information, contact:

Kenneth Frost

OSU HAREC, Extension Plant Pathology Laboratory

2121 S. First Street

Hermiston, OR 97838

Office 541-567-8321

Kenneth.Frost@oregonstate.edu

The fee schedule, sample submission form, and directions for sample submission can be found at: http://oregonstate.edu/dept/hermiston/plant-pathology-plant-lab-testing

Fees are subject to change. See the website for current price list.

Samples must be accompanied by a completed sample submission form. Delays in sample processing may occur if a sample submission form is not included with shipped samples.

Digital pictures can be E-mailed to:Kenneth.Frost@oregonstate.edu

Note: Failure to confirm the presence of an organism in or on a submitted sample does not establish the field to be free of that organism.