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Oak regeneration failure can have a significant economic impact since oak is a crucial tree genus in many American and European forests. Moreover, it has been estimated that as few as 4% of oak-dominated forests in the Eastern U.S. have sufficient oaks to replace the current canopy. [12]
A root rot, Phytophthora cinnamomi, may kill seedlings in the nursery. Cankers caused by Strumella and Nectria species damage the holes of black oak but seldom kill trees. Foliage diseases that attack black oak are the same as those that typically attack species in the red oak group and include anthracnose (Gnomonia quercina), leaf blister ...
The term "hazard trees" is commonly used by arborists/arboriculturists, and industry groups such as power line operators, for trees that, due to disease or other factors, are more susceptible to falling in windstorms, or having parts of the tree fall. Damage may also disfigure amenity trees, create unacceptable risks to people, reduce the safe ...
Roads, sidewalks and foundations can all suffer structural issues from tree roots. [7] Several methods of control have been attempted, from barriers to encouraging growth in desirable directs. Selection of plants with root systems that will not conflict with nearby structures is the most effective method of damage control.
Quercus falcata, also called southern red oak, spanish oak, [4] bottomland red oak or three-lobed red oak is an oak (part of the genus Quercus).Native to the southeastern United States, it gets its name the "Spanish Oak" as these are the areas of early Spanish colonies, whilst "southern red oak" comes from both its range and leaf color during late summer and fall. [5]
A family in San Carlos, California, is facing an impossible decision: spend more than $40,000 to remove a nearly 500-year-old heritage white oak tree in their backyard or find new homeowners ...
Phytophthora quercina is a papillate homothallic soil-borne plant pathogen causing root rot of oak tree species in Europe. [1] It is associated with necrotic fine roots. [2]In culture, this species shows a uniform, dome-shaped and cottonwool-like colony growth pattern.
The common water mould Phytophthora cinnamomi grows in the roots of the tree and has been known to devastate cork oak woodlands. [17] Several species of butterflies damage the cork oak, the most important being the spongy moth (Lymantria dispar). The species lays its eggs in the bark of the branches and trunks, and the caterpillars that hatch ...