This is an information by Dr. rer. silv. Thomas Jung expert for Phytophthora, forest and tree diseases and nurseries
http://www.tree-diseases.com

Diagnosis | Tree assessment | Control | Phytophthora Consulting

Phytophthora Picture Gallery - Oak decline

Oak 10: Suberized roots of declining mature oaks (Q. robur) with callussing open lesions due to Phytophthora infections.

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