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15 Νοε 2023 · Maples, especially young trees, in ornamental plantings and in the forest are susceptible to this fungus. In most cases, between 2% and 10% of the trees may be affected. However, it has been observed in some stands to canker over 20% of the maples.
Eutypella canker is a plant disease caused by the fungal pathogen Eutypella parasitica. This disease is capable of infecting many species of maple trees and produces a large, distinguishable canker on the main trunk of the tree.
17 Οκτ 2022 · Other than the physical blemishes of the lesions, cankers can cause numerous problems in the foliage such as stunted growth, chlorosis, browning, and curling. As a canker worsens and spreads, the causal pathogen can end up clogging the vascular system of a tree, leading to wilt and branch dieback.
What Are Tree Cankers? Tree cankers are symptoms of a fungal or bacterial pathogen having infected damaged bark (from an impact injury) or an open wound (from unhealed pruning). The fungi and bacteria that cause cankers are common, widespread, and harmful to an extensive range of tree and shrub species.
Eutypella canker, caused by Eutypella parasitica Dav. and Lor., is a common perennial canker on sugar maple (Acer saccharurn Marsh.) and red maple (A. rubrum L.) and occurs infrequently on boxelder (A. negundo L.), noway maple (A. pla- tanoides L.), silver maple (A. saccharinurn L.), black maple (A. nigrum Mich.), and sycamore maple (A. pseudopl...
Tight girdling roots can cause maple decline symptoms. Mature healthy maples, especially woodland trees of seedling origin, usually have basal trunk flare and surface buttress roots at the soil line. Most trees affected with collar rot and basal canker lack such typical root flares at the base of the trunk.
A canker is an infectious disease of the phloem and cambium on stems, branches or twigs of trees. A patch of phloem and cambium is killed, the underlying wood dies as a result, and the killing often progresses over time.
