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In the majority of cases of shake, the underlying cause is a weakening of the wood due to action by anaerobic bacteria which have entered the tree stem through the root system. researchers have isolated anaerobic and facultative anaerobic bacteria from shake surfaces, in particular anaerobic Clostridium species.
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]
The bark of some trees, notably oak (Quercus robur) is a source of tannic acid, which is used in tanning. Bark chips generated as a by-product of lumber production are often used in bark mulch . Bark is important to the horticultural industry since in shredded form it is used for plants that do not thrive in ordinary soil, such as epiphytes .
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 ...
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 ...
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 ...
The Bedford Oak is a 500-year-old white oak tree that sits in the town of Bedford in New York. It is the mascot of the town. It sits at the corner of the Hook Road and the old Bedford Road (now Cantitoe Street). The ground the tree stands on was deeded to the Town of Bedford in 1942 by Harold Whitman in memory of his wife, Georgia Squires Whitman.
In order to reduce the potential harms of the sawtooth oak, researchers and scientists are advising to remove tree saplings and remove the plant species altogether from reclamation species lists. Due to their preference for well-drained acid soils, Quercus acutissima is able to thrive and survive in various harsh locations. [ 6 ]
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