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Frost crack or Southwest canker [1] is a form of tree bark damage sometimes found on thin barked trees, visible as vertical fractures on the southerly facing surfaces of tree trunks. Frost crack is distinct from sun scald and sun crack and physically differs from normal rough-bark characteristics as seen in mature oaks , pines , poplars and ...
The reason it happens is because bark is a dead tissue that can’t expand as a tree’s trunk grows larger. All it can do is pop off in pieces and fall to the ground.
[3] [17] This happens especially with trees whose trunks are already dying or rotting. [3] [18] [19] The more usual result of lightning striking a tree, however, is a lightning scar, running down the bark, or simply root damage, whose only visible sign above ground is branches that were fed by the root dying back. [17] [20]
Rabbits and rodents can cause injury to the thin bark and twigs of young trees. ... these items should extend two to three inches below the ground for protection against mice and voles and 18 to ...
It mainly affects mature oak trees of over 50 years old of both Britain's native oak species: the pedunculate oak (Quercus robur) and the sessile oak (Quercus petraea). The disease is characterised by the trees bleeding or oozing a dark fluid from small lesions or splits in their bark. [ 1 ]
Aleurodiscus oakesii is a cluster of small, gray-white, irregular cup-shaped saprotrophic fungi that grows on decaying hardwood tree bark. This fungus may also be called hophornbeam discs, [1] and it causes smooth patch disease. A. oakesii is found year round in North America, Europe, and Asia and is commonly found on oak trees.
A hydraulic debarker is a machine removing bark from wooden logs by the use of water under a pressure of 700 kilopascals (100 pounds per square inch) or greater. [1] Hydraulic debarking can reduce soil and rock content of bark, but may increase the water content.
The foamy bark canker is a disease affecting oak trees in California caused by the fungus Geosmithia sp. #41 and spread by the Western oak bark beetle (Pseudopityophthorus pubipennis). This disease is only seen through the symbiosis of the bark beetles and the fungal pathogen .