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The fungal pathogen Cristulariella depraedans is found in Europe and North America and mostly affects trees in the genus Acer.Trees affected in Germany and Britain are primarily the sycamore (A. pseudoplatanus) and the Norway maple (A. platanoides), while in North America the most affected are A. platanoides, the red maple (), the sugar maple (A. saccharum), the silver maple (A. saccharinum ...
Verticillium wilt is a wilt disease affecting over 350 species of eudicot plants. It is caused by six species of Verticillium fungi : V. dahliae , V. albo-atrum , V. longisporum , V. nubilum , V. theobromae and V. tricorpus . [ 1 ]
Oak wilt is a fungal caused by Bretziella fagacearum, is a disease originating in eastern Russia. It can slowly or quickly kill an oak tree when the tree reacts to the fungus by plugging its own cambial tissue while attempting to block the spread of the fungus. This plug prevents the cambium vascular tissue from delivering nutrients and water ...
Verticillium wilt is a fungal disease that is easily transmitted through pruning. If you see black spots on freshly cut wounds, disinfect pruning tools with a 10 percent bleach solution between ...
The larvae emerge from eggs laid on the samara and tunnel to the seeds. Norway maple is generally free of serious diseases, though can be attacked by the powdery mildew Uncinula bicornis, and verticillium wilt disease caused by Verticillium spp. [30] "Tar spots" caused by Rhytisma acerinum infection are common but largely harmless. [31]
Phyllosticta minima is a fungus of the division Ascomycota which causes purple-bordered leaf spot, a largely cosmetic disease that infects maple trees. [1] It grows on living and fallen leaves, creating tan, ovular lesions 1 ⁄ 4 inch in diameter and ringed with 'purple' or black spores.
Experts from the Texas A&M Forest Service recommend not trimming your trees until June to avoid infecting them with oak wilt, a deadly tree disease
Maple decline is a term describing loss of vigor and dieback in forests or urban plantings of maple trees. It is not a disease or a syndrome, nor is it contagious or endemic. Instead, it is a generalized set of symptoms that may be applied to any species of tree suffering a wide range of different stressors.