Phytophthora Picture Gallery - Oak decline

Oak 9: Tap root of a declining mature oak (Q. robur) showing dieback and formation of regeneration roots; note the loss of lateral fine roots on the regeneration roots, and the callussing lesions on the tap root and one regeneration root (fingers) due to Phytophthora infections.

First | back | Overview | Next | Last

Picture 9 of 17