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Grosmannia clavigera is a species of sac fungus that causes blue stain in wood. It spreads to lodgepole pine, ponderosa pine, Douglas-fir, and whitebark pine trees from the body and a special structure in the heads of mountain pine beetles.
Blue stain fungi (also known as sap stain fungi) is a vague term including various fungi that cause dark staining in sapwood. [1] The staining is most often blue, but could also be grey or black. Because the grouping is based solely on symptomatics, it is not a monophyletic grouping.
Wood decay caused by Serpula lacrymans (called true dry rot, a type of brown-rot). Fomes fomentarius is a stem decay plant pathogen Dry rot and water damage. A wood-decay or xylophagous fungus is any species of fungus that digests moist wood, causing it to rot.
In trees, heart rot is a fungal disease that causes the decay of wood at the center of the trunk and branches. Fungi enter the tree through wounds in the bark and decay the heartwood . The diseased heartwood softens, making trees structurally weaker and prone to breakage.
Infected trees in public areas should be checked and removed if red ring rot disease has rendered them potentially dangerous (trees weakened due to heart rot are more likely to fall). [6] Where timber management is the focus, infected trees should be removed. A reduction in rotation age should be considered if decay is frequent to minimize losses.
The tiny insect larva is attacking black locust trees.
The tree produces spiky green fruits about the size of a golf ball, which turn brown and drop off the tree over an extended period beginning in fall and continuing over the winter.
Orange or yellow paints are used for harvest boundaries, and trees within those areas have blue, orange, green, or yellow paint, depending on whether they are to be taken or spared. A black paint ...