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In southern Germany apple and pear trees have been a part of the landscape for a long time, and are difficult to protect. The decline of apple and pear trees from their landscape can be expensive to replace and could have a negative effect on tourism. In the long-run, fire blight is a very important factor of economy and society. [citation needed]
Pyrus calleryana, also known as the Callery pear or Bradford pear, is a species of pear tree native to China and Vietnam, [2] in the family Rosaceae. It is most commonly known for its cultivar 'Bradford' and its offensive odor, widely planted throughout the United States and increasingly regarded as an invasive species .
A whole row of these pungent flowering trees in bloom isn’t particularly pleasant. The Bradford pear also has a major structural flaw. “The upright branching habit makes it prone to storm ...
According to Campanis, the story began on the West Coast at the turn of the 20th century when fruit trees were dying from a disease called fire blight. Frank Reiber, a plant scientist, searched ...
Mcmanus PS. 1994. Role of Wind-Driven Rain, Aerosols, and Contaminated Budwood in Incidence and Spatial Pattern of Fire Blight in an Apple Nursery. Plant Disease 78:1059. PuĊawska J, Sobiczewski P. 2011. Phenotypic and genetic diversity of Erwinia amylovora: the causal agent of fire blight. Trees 26:3–12.
Parentage Dr. Guyot x Bella di Giugno. Susceptible to fire blight. eating: Tyson [23] [24] [20] [28] Early Sugar Pear: Philadelphia, US: 1794: Tree is hardy and fireblight reistant. Hardy in zone 5–8. Pick early August. eating Ure: Morden, Manitoba: Juicy, small-medium fruit [142] Uta [63] [226] Dresden-Pillnitz, Germany: 1993: Parentage ...