Chinese chestnuts, on the other hand, are resistant to chestnut blight
and somewhat resistant to phytophthora.
Though Murrill's doomsday predictions for the American chestnut proved true, the tree was never forgotten; efforts to outwit the chestnut blight
began immediately and have never stopped.
No one knew what to do when the chestnut blight
hit in 1904, so for decades many people continued planting Chinese chestnuts anyway--at least they somewhat replaced the nut of the American chestnut, but since they were low-growing, the forest canopy ceded to oaks and beeches.
Thankfully, within the last century, white and red oaks have filled the void caused by the chestnut blight
In addition to fire suppression, the introduction of chestnut blight
(Cryphonectria parasitica), an ascomycete, in the early 1900s is an important human-induced disturbance that dramatically changed the eastern deciduous forests and oak dominance in the past century (McCormick and Platt, 1980).
Dating the item was fairly easy, as the chestnut blight
struck American shores in about 1900, destroying nearly every American chestnut tree.
If it becomes established in the United States, the invasive insect has the potential to cause more damage than Dutch elm disease, chestnut blight
, and the gypsy moth combined--destroying millions of acres of our hardwoods, including national forests and parks and even our own backyard trees.
Accidentally introduced into North America in the early 20th century, the chestnut blight
fungus was carried on imported Chinese and Japanese chestnut trees destined for the nursery industry.
At the beginning of the last century, the chestnut blight
, caused by a fungus, rapidly spread throughout the American chestnut's natural range, which extended from southern New England and New York southwest to Alabama.
I had a relatively small area to devote to chestnuts, and, except for one tree, I chose grafted hybrid varieties that produce large nuts, are resistant to chestnut blight
, and are cold-hardy (because the temperature here in New York's Hudson Valley can plummet to minus 25 degrees Fahrenheit).
Recent additions to the collections include seven species of fungi in the chestnut blight
group that were discovered and described in the past few years.
But in the early 1900s, chestnut blight
led to the near-extinction of the American chestnut tree.
The outbreak of chestnut blight
fungus (Cryphonectria parasitica) from imported chestnut stock was first observed in New York and spread like wild-fire.
The American chestnut, which was virtually eliminated from Appalachian forests in the early 20th century by the chestnut blight
pathogen, is being restored through several innovative programs around the country.
They were decimated by chestnut blight
, caused by a bark fungus accidentally introduced into America.