Other Diseases of Fruit Trees

Fruit Trees

Host Disease Pathogen Occurrence
Apple

Apple scab
Bitter pit
Blister bark
Crown gall

Crown rot/collar rot
Fire blight
Jonathan spot
Perennial canker
Powdery mildew

Venturia inaequalis  (F)
physiological  (A)
genetic  (A)
Agrobacterium tumefaciens(B)
Phytophthora cactorum  (F)
Erwinia amylovora  (B)
Calcium deficiency  (A)
Cytospora sp.  (F)
Podosphaera leucotricha  (F)
Occasional
Widespread
Occasional
Widespread
Widespread
Widespread
Widespread
Widespread
Widespread
Apricot Bacterial canker
Blossom& twig blight; brown rot
Coryneum blight or shothole
Crown gall
Crown rot/collar rot
Powdery mildew
Prunus ring spot

Pseudomonas syringae  (B)
Monilinia spp.  (F)

Wilsonomyces carpophilus  (F) Agrobacterium tumefaciens  (B)
Phytophthora spp.  (F)
Sphaerotheca pannosa  (F)
virus

Widespread

Occasional

Widespread

Widespread
Occasional
Occasional
Occasional 
Cherry Bacterial blight
Coryneum blight 
Crown gall
Crown rot/collar rot
Deep suture
Cherry leafspot
Lesion nematode
Perennial canker
Powdery mildew
Prunus ring spot
Rugose mosaic
Sour cherry yellows
Wilt
Western X
Pseudomonas syringae  (B)
Wilsonomyces carpophilus  (F)
Agrobacterium tumefaciens  (B)
Phytophthora spp.  (F)
genetic  (A)
Blumeriella jaapii  (F)
Pratylenchus spp.
Cytospora sp.  (F)
Podosphaera oxycanthae  (F)
virus
virus
virus

Verticillium dahliae  (F)
phytoplasma
Occasional
Occasional
Widespread
Widespread
Occasional
Salt Lake(rare)
Occasional
Widespread
Widespread
Widespread
Utah
Widespread
Occasional
Northern Utah
Peach and
  nectarine
Brown rot
Coryneum blight or
  shothole

Crown gall
Leaf curl
Perennial canker
Powdery mildew
Rusty spot
Silver leaf
Wilt 
Monilinia fructicola  (F)

Wilsonomyces carpophilus  (F)
Agrobacterium tumefaciens  (B)
Taphrina deformans  (F)
Cytospora sp.  (F)
Sphaerotheca pannosa  (F)
Podosphaera leucotricha  (F)
Stereum purpureum  (F)
Verticillium dahliae  (F) 

Rare

Widespread
Widespread
Rare
Widespread
Occasional
Occasional
Rare
Occasional

Pear Fire blight
Pear decline
Perennial canker
Powdery mildew
Erwinia amylovora  (B)
phytoplasma
Cytospora sp.  (F)
Podosphaera leucotricha  (F)
Widespread
Utah
Widespread
Occasional
Plum/prune  Crown gall
Perennial canker
Plum pockets
Prunus ring spot
Agrobacterium tumefaciens  (B)
Cytospora sp.  (F)
Taphrina pruni  (F)

virus
Widespread
Widespread
Rare
Occasional