Ornamentals: Trees
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Peronosporales(X) Root and Butt / Root and Stem Diseases(X) Brantlee Spakes Richter(X)
| 1 Images of 1 Subjects | View Subject List | View Image Details | View Thumbnails |
| Image | Subject Name | Scientific Name | Description |
|---|---|---|---|
| 5408716 | Phytophthora root and crown rots | Phytophthora spp. | Image shows samples of field soil (25 cm2) from Fraser fir production sites, flooded with 40 ml of distilled water. Rhododendron leaf disks were floated on the water surface as a bait for zoospores of Phytophthora spp. Leaf disks are typically removed after 24 hours and plated on selective medium for detection of Phytophthora. |
