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[7] [8] The disease has been reported in Europe, Oceania, and has recently been found in North America; [9] for this reason, the fungus is considered a potential threat to the reintroduction of the American chestnut. [10] [11] In brown chestnut rot, Gnomoniopsis castaneae infects the kernel of the nut with browning and necrosis of endosperm and ...
Browning of the chestnut burs at the blossom end may be a first sign in August. At harvest time, blackening of pointed end of the chestnut shell and kernel indicates infection. The extent of blackening can vary. It can range from a barely visible black tip of the kernel to the whole nut being black.
Kastanozem (also known as "chestnut soil") is one of the 32 Reference Soil Groups of the World Reference Base for Soil Resources (WRB). These soils are brighter than Chernozems, and are related to the Mollisols in the USDA soil taxonomy. They are rich in humus, and originally covered with early maturing native grasslands vegetation, which ...
The oil content of the seeds is 40%, and the oil content of the kernels is 66.8%. [4] The unsaturated fat of oil is as high as 94%. [14] "Its saturated fat content is 1.78 times lower than that of olive oil and 1.9 times lower than that of peanut oil".
Bouche de Bétizac is a French chestnut cultivar developed in 1962 by INRA at the station of Malemort-sur-Corrèze near Brive. It is a controlled hybrid between Castanea sativa and Castanea crenata (female Bouche rouge × male Castanea crenata CA04). This variety produces large to very large chestnuts. It has very good flavor for a hybrid.
Leaf and flower detail of a Chinese chestnut at New York Botanical Garden. It is a deciduous tree growing to 20 metres (66 ft) tall with a broad crown. The leaves are alternate, simple, 10–22 centimetres (4– 8 + 1 ⁄ 2 in) long and 4.5–8 cm (1 + 3 ⁄ 4 – 3 + 1 ⁄ 4 in) broad, with a toothed margin.
Psathyrella spadicea or Homophron spadiceum, [1] commonly known as the chestnut brittlestem, [2] is a species of agaric fungus in the family Psathyrellaceae. The fungus was originally described by German mycologist Jacob Christian Schäffer in 1783 as Agaricus spadiceus .
When hatched, the large, white, legless grubs (larvae) feed on the tissue of the growing chestnut kernels. [6] When the larvae reach their last of four instar inside the chestnut, they chew a 1/8" hole in the chestnut shell and emerge. Most larvae emerge and fall to the ground while the chestnut is still in the tree.