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Cronartium quercuum, also known as pine-oak gall rust is a fungal disease of pine (Pinus spp.) and oak (Quercus spp.) trees. Similar to pine-pine gall rust , this disease is found on pine trees but its second host is an oak tree rather than another pine.
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.
Oak wilt is a devastating exotic disease, killing some trees rapidly in a single season. [7] Oak wilt is an important disease in urban areas where trees are highly valued. . The disease reduces property values because of the loss of trees and is economically costly to the property owner since they or the local government must pay for tree remo
Cystotheca lanestris, the live oak witch's broom fungus, is a species of mildew that infects buds and induces stem galls called witch's brooms on oak trees in California, Arizona, and Mexico in North America. [2] [3] Witch's brooms are "abnormal clusters of shoots that are thickened, elongated, and highly branched."
Taphrina caerulescens infects about 50 different species of oak (Quercus), predominately red oak (Q. erythrobalanus) and some white oak (Q. leurobalanus).Oak leaf blister is found across the country and in varying parts of the world but is most severe in the southeast and Gulf States of the U.S. [6] It is generally accepted that a T. caerulescens strain isolated from one host cannot be used to ...
Bacterial leaf scorch (commonly abbreviated BLS, also called bacterial leaf spot) is a disease state affecting many crops, caused mainly by the xylem-plugging bacterium Xylella fastidiosa. [1] It can be mistaken for ordinary leaf scorch caused by cultural practices such as over-fertilization.
Quercus palustris, also called pin oak, [4] swamp oak, or Spanish oak, [5] is a tree in the red oak section (Quercus sect. Lobatae) of the genus Quercus. Pin oak is one of the most commonly used landscaping oaks in its native range due to its ease of transplant, relatively fast growth, and pollution tolerance.
Although the disease is caused by a relatively new symbiosis, it has already spread to a number of different counties, and is completely wiping out oak trees. As mentioned before, this is partially due to disease symptoms that are similar to other diseases leading to a misdiagnosis ; it most resembles bacterial wetwood , polyphagous shot hole ...