Search results
Results from the WOW.Com Content Network
With a girth of 6.9 m (22.6 ft) and a height of 40 metres (130 ft), the Ulmus × hollandica hybrid elm on Great Saling Green, Great Saling, near Braintree, Essex, reckoned at least 350 years old, [25] was reputedly the largest elm in England, before succumbing to Dutch Elm Disease in the 1980s; [26] Elwes and Henry (1913) misidentified it as U ...
The name "Dutch elm disease" refers to its identification in 1921 and later in the Netherlands by Dutch phytopathologists Bea Schwarz and Christine Buisman, who both worked with professor Johanna Westerdijk. [1] [2] The disease affects species in the genera Ulmus and Zelkova, therefore it is not specific to the Dutch elm hybrid. [3] [4] [5]
Golden elm tree with Dutch elm disease. Dutch elm disease (DED) devastated elms throughout Europe and much of North America in the second half of the 20th century. It derives its name "Dutch" from the first description of the disease and its cause in the 1920s by Dutch botanists Bea Schwarz and Christina Johanna Buisman.
Ulmus americana, generally known as the American elm or, less commonly, as the white elm or water elm, [a] is a species of elm native to eastern North America. The trees can live for several hundred years. It is a very hardy species that can withstand low winter temperatures, but it is affected by Dutch elm disease.
Chichester Elm is known to have been marketed in Victoria, Australia, from 1873. [16] In the early 20th century the Gembrook or Nobelius Nursery described it as a large tree of upright growth with broad leaves, listing it separately from Huntingdon Elm and Ulmus 'Canadian Giant'. [17]
Very susceptible to Dutch elm disease, it was the loss of this particular elm more than any other to the earlier strain of the disease which initiated the Dutch elm breeding programme in 1928. [8] In trials of Dutch clones, past and present, conducted at Wageningen in 2008 and 2009, 'Belgica' exhibited 89% defoliation eight weeks after ...
The American Elm cultivar Ulmus americana 'St. Croix' is a recent (2008) selection cloned from a large tree growing on a farm near Afton, Minnesota, [1] which has displayed a high resistance to Dutch elm disease (DED). [2] A U S patent, PP 20097, was granted in 2009.
The tree has upright, spreading branches bearing dark-green leaves. [1] ' ... to Dutch elm disease, and unaffected by the Elm Leaf Beetle Xanthogaleruca luteola. [2]