Other Diseases of 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
  Jonathon spot Calcium deficiency Widespread
  Perennial canker Cytospora sp. Widespread
  Powdery mildew Podosphaera leucotricha Widespread
Apricot Bacterial canker Pseudomonas syringae Widespread
  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 Widespread
  Coryneum blight Wilsonomyces carpophilus Occasional
  Crown gall Agrobacterium tumefaciens Widespread
  Crown rot/collar rot Phytophthora spp.  Widespread
  Deep suture genetic Occasional 
  Cherry leaf spot Blumeriella jaapii Salt Lake (rare)
  Lesion nematode Pratylenchus spp. Occasional
  Perennial canker Cytospora sp.  Widespread
  Powdery mildew Podoshpaera oxycanthae Widespread
  Prunus ring spot virus Widespread
  Rugose mosaic virus Utah
  Sour cherry yellows virus Widespread
  Wilt Verticillium dahliae  
  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