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 4: Dying stand of sessile oak (Q. petraea) due to the synergistic interaction of fine root destructions caused by P. quercina and P. cambivora and defoliation caused by gipsy moth (Lymantria dispar).

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Picture 4 of 17