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This revised edition (2004) replaces the previous edition published in 1998 and 2000.
Chestnut blight is a serious disease of chestnut trees caused by the fungus Cryphonectria parasitica. The fungus does little damage to host trees in its native range in Asia, but has devastated American chestnut when it was accidentally introduced to the USA more than 100 years ago via infected planting...
Pine pitch canker, also known as pitch or pitch pine canker, is a serious canker disease of pines and Douglas fir caused by the fungus Fusarium circinatum. The disease affects trees in planted forests, nurseries, parks and gardens. In plantations, the disease leads to reduced growth and cone yield and...
Phytophthora austrocedri (previously spelled austrocedrae) is an aggressive, fungus-like pathogen that poses a serious threat to juniper trees in Britain. Juniper is an important native species and a significant proportion of the small area of juniper woodland in Britain is protected. Phytophthora austrocedri was first reported in the UK in...
Xylella fastidiosa is a disease-causing bacterium that affects a wide range of important woody plants and broadleaved trees. It invades the xylem vessels that transport water throughout plants, and causes symptoms ranging from leaf scorch to tree dieback and death. In the natural environment it is transmitted by xylem-fluid feeding...
The Asian longhorn beetle, a native to China and southeast Asia, is an invasive pest of trees in Britain. The larvae of the beetle feed on the wood of a wide range of broadleaved trees, which causes damage and will ultimately kill affected trees. The beetle has caused extensive damage...
Phytophthora lateralis is an aggressive, fungus-like pathogen of Lawson cypress trees. It mainly attacks the roots of trees and can spread up through the trunk resulting in the rapid decline and death of the tree. Thought to originate in Asia, the disease is the main cause of mortality in Lawson...
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