Phytophthora Resistance Screening Study (before disease symptoms)

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Presentation transcript:

Phytophthora Resistance Screening Study (before disease symptoms)

Phytophthora Resistance Screening Study (after disease symptoms)

Phytophthora Resistance Screening Study (before disease symptoms)

Phytophthora Resistance Screening Study (after disease symptoms)

Greenhouse tour – Puget Sound Christmas Tree Association Annual Meeting

Greenhouse tour for Mason County Master Gardeners

Performing visual root rot ratings on seedlings from the greenhouse resistance screening study

Turkish fir provenance Phytophthora Root Rot resistance screening field plot. This is a field trial to test the performance of different seed sources of Turkish fir for tolerance to Phytophthora root rot. The plot was arranged into 30 replicate blocks; the soil in each block was inoculated with a mixture of 5 different Phytophthora species; the trees were planted into the inoculated soil; and the plot was flooded for 48 hours to promote disease development. Mortality of seedlings was recorded and Phytophthora was isolated from each dead seedling to confirm disease and determine which species caused disease.

Planting the field Plot - Turkish fir provenance Phytophthora Root Rot resistance screening

Flooding the field Plot - Turkish fir provenance Phytophthora Root Rot resistance screening

Candid shot of a grower’s Fraser fir transplant beds in western WA; we were called in to help determine the cause of disease – it was Phytophthora

Field presentation on Phytophthora root rot and my research to Graduate-level field plant pathology course

Field demonstration of symptoms of Phytophthora root rot on noble fir - Graduate-level field plant pathology course

Field presentation on Turkish fir trial to Graduate-level field plant pathology course