A companion to British arboriculture

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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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