disease
The loss of health of a host resulting from infection by a pathogen, which multiplies to cause adverse symptoms. See:
- anthracnose,
- bacterial canker,
- beech bark disease,
- black line disease,
- chalara die-back of ash,
- chestnut blight,
- damage to trees,
- Dutch elm disease,
- fireblight,
- honey fungus,
- horse chestnut bleeding canker,
- leptospirosis (Leptospira spp.),
- Lyme disease (Borrelia spp.),
- massaria disease of plane,
- oak mildew,
- Phytophthora cactorum and P. syringae,
- Phytophthora kernoviae,
- Phytophthora lateralis,
- Phytophthora ramorum,
- Phytophthora spp.,
- powdery mildews,
- replant disease,
- rust diseases,
- scab,
- silverleaf disease,
- sooty bark disease of sycamore,
- sudden oak death,
- Verticillium wilt,
- Weil’s disease
This definition is abridged from A – Z of tree terms: A companion to British arboriculture.
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