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Whatcom County IPM Project


Survey for Phytophthora fragariae var. rubi in pre-plant stocks and planted root sample of red raspberry in Washington State

A new tool is available for use in the identification of Phytophthora fragariae rubi as a disease causing root rot in raspberry. The use of PCR (Polymerase Chain Reaction) can be used to detect if a specific gene is present in an organism. It will be used to detect a gene present only in Phytophthora fragariae rubi. With this data, it can be determined which tissue samples, if any, carry the root rot causing disease organism, Phytophthora fragariae rubi.

This program has received support from the Washington Red Raspberry Commission, Washington State Commission for Pesticide Reduction, and Whatcom County.

Please view the sampling guidelines:

Raspberry Root Rot Sampling Guidelines for Phytophthora fragariae rubi Identification using PCR

Please view the PCR analysis results:

NEW - Results of PCR identification of Phytophthora fragariae rubi organized by grower submitted code




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WSU Whatcom County Extension
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