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

Diagnosis | Tree assessment | Control | Phytophthora Consulting

Phytophthora Picture Gallery - Alder dieback

Mature common alder (A. glutinosa) with collar rot by P. alni (note tarry spots at the outer bark) growing in a forest stand.

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