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Phacidium coniferarum

Canker of Douglas fir

Description

On young trees, cambium and under-bark tissues begin to die at the site of infection, the bark sinks, the branch is girdled and above parts die. On older trees and thicker branches, diamond-shaped necroses are formed. At the infection site, pycnidia of the conidial phase Phomopsis pseudotsugae are formed. Predispositions for the infection are: drought, root drying, wounds and pruning. It is important to treat fresh wounds throughout the year.

Symptom

A sign of the pathogen are black spherical fruiting bodies - pycnids piercing the infested bark.

Tree Species: Pine, Douglas Fir, Fir, Spruce, Larch

Part of a plant- attacked: Branch

Pest significance: Harmful

Pest Category: Fungi

Present in EU: Yes