Other Diseases of Fruit Trees

Fruit Trees

Host Disease Pathogen Occurrence
Apple Apple scab Venturia inaequalis  Occasional
  Bitter pit physiological  Widespread
  Blister bark genetic  Occasional
  Crown gall Agrobacterium tumefaciens  Widespread
  Crown rot/collar rot Phytophthora cactorum  Widespread
  Fire blight Erwinia amylovora  Widespread
  Jonathan spot Calcium deficiency  Widespread
  Perennial canker Cytospora sp. Widespread
  Powdery mildew Podosphaera leucotricha Widespread
Apricot Bacterial canker Pseudomonas syringae Widespread
  Blossom& twig blight; brown rot Monilinia spp. Occasional
  Coryneum blight or shothole Wilsonomyces carpophilus Widespread
  Crown gall Agrobacterium tumefaciens Widespread
  Crown rot/collar rot Phytophthora spp. Occasional
  Powdery mildew Sphaerotheca pannosa Occasional
  Prunus ring spot virus Occasional
Cherry Bacterial blight Pseudomonas syringae Occasional
  Coryneum blight Wilsonomyces carpophilus Occasional
  Crown gall Agrobacterium tumefaciens Widespread
  Crown rot/collar rot Phytophthora spp. Widespread
  Deep suture genetic Occasional
  Cherry leafspot Blumeriella jaapii Salt Lake(rare)
  Lesion nematode Pratylenchus spp. Occasional
  Perennial canker Cytospora sp. Widespread
  Powdery mildew Podosphaera oxycanthae Widespread
  Prunus ring spot virus Widespread
  Rugose mosaic virus Utah
  Sour cherry yellows virus Widespread
  Wilt Verticillium dahliae Occasional
  Western X phytoplasma Northern Utah
Peach and
nectarine
Brown rot Monilinia fructicola Rare
  Coryneum blight or
shothole
Wilsonomyces carpophilus Widespread
  Crown gall Agrobacterium tumefaciens Widespread
  Leaf curl Taphrina deformans Rare
  Perennial canker Cytospora sp. Widespread
  Powdery mildew Sphaerotheca pannosa Occasional
  Rusty spot Podosphaera leucotricha Occasional
  Silver leaf Stereum purpureum Rare
  Wilt Verticillium dahliae Occasional
Pear Fire blight Erwinia amylovora Widespread
  Pear decline phytoplasma Utah
  Perennial canker Cytospora sp. Widespread
  Powdery mildew Podosphaera leucotricha Occasional
Plum/prune Crown gall Agrobacterium tumefaciens Widespread
  Perennial canker Cytospora sp. Widespread
  Plum pockets Taphrina pruni Rare
  Prunus ring spot virus Occasional