Phytophthora Research and Consultancy

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

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Phytophthora Picture Gallery - Oak decline

Oak 2: Declining mature pedunculate oaks (Q. robur) showing different levels of crown dieback and chlorosis (specific symptom on calcaric soils due to advanced fine root destructions caused by P. citricola and P. quercina).

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Picture 2 of 17