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Chinese chestnut trees have been found to have the highest resistance to chestnut blight; [17] however, individuals within the Chinese chestnut species may vary in blight resistance. Some individuals are still quite susceptible while others are essentially immune. [28]
The American chestnut, virtually eliminated from eastern forests, survived in small isolated pockets. Some survivors have been cross-bred with the blight-resistant Chinese chestnut and introduced into National Forests in trial studies. [11] Parasitoid wasps have been approved for release by the USDA to combat the emerald ash borer. Pesticide ...
Young tree in natural habitat American chestnut male (pollen) catkins. Castanea dentata is a rapidly-growing, large, deciduous hardwood eudicot tree. [20] A singular specimen manifest in Maine has attained a height of 115 feet (35 m) [21] Pre-blight sources give a maximum height of 100 feet (30 m), and a maximum circumference of 13 feet (4.0 m). [22]
Struck by a blight identified in 1904, American chestnut trees are considered "functionally extinct." Now those that remain are facing a new disease.
The American Chestnut Foundation is striving to develop a blight-resistant species. Concerning each plant imported from Asia that turned out to be invasive, she said, “It seemed like a good idea ...
Large surviving American chestnut in its natural range. The American Chestnut Cooperators' Foundation (ACCF) is a 501(c)(3) non-profit, scientific, and educational foundation that was organized in 1986 and with the help of research and volunteers from Virginia Tech University, is dedicated to restoring the American chestnut (Castanea dentata) [1] to its former place in the United States ...
The mission of The American Chestnut Foundation (TACF) is to restore the American chestnut tree to the forests of Eastern North America by breeding genetically diverse blight-resistant trees, evaluating various approaches to the management of chestnut pests and pathogens, and reintroducing the trees into the forest in an ecologically acceptable manner.
The chestnut blight was introduced in the late 19th century with the Japanese chestnut and decimated the once-widespread American chestnut tree. [9] Native un-modified trees are killed from the ground up by the blight, and only the root system survives.