# List of almond diseases

This article is a list of diseases of almonds (Prunus dulcis).

## Bacterial diseases

| Leaf scorch/Golden death | Xylella fastidiosa |
| Bacterial blast | Pseudomonas syringae |
| Bacterial canker | Pseudomonas syringae pv. syringae |
| Bacterial hyperplastic canker | Pseudomonas amygdali |
| Bacterial spot | Xanthomonas pruni (syn. X. campestris pv. pruni) |
| Crown gall | Agrobacterium tumefaciens |

### Mycoplasmal diseases

| Brown line and decline | See § Peach yellow leaf roll phytoplasma. Called Peach yellow leafroll mycoplasma in some sources. |

### Phytoplasmal diseases

| Brown line and decline Kernel shrivel | Peach yellow leaf roll phytoplasma |
| European stone fruit yellows | European stone fruit yellows phytoplasma |
| Western X disease | Western-X phytoplasma |

## Fungal diseases

For treatment in the US, see Fungicide use in the United States#Almonds.
| Alternaria leaf spot | Alternaria alternata |
| Anthracnose | Colletotrichum acutatum |
| Armillaria root rot | Armillaria mellea Rhizomorpha subcorticalis [anamorph] |
| Band canker  = Dothiorella canker | Botryosphaeria dothidea Dothiorella sp. [anamorph] |
| Fusarium root rot | Fusarium spp. |
| Brown rot | Monilinia fructicola |
| Brown rot blossom blight or "brown rot" | Monilinia laxa Monilinia sp. [anamorph] |
| Ceratocystis canker | Ceratocystis fimbriata |
| Green fruit rot | Botrytis cinereaBotryotinia fuckeliana [teleomorph]Monilinia fructicolaMonilinia laxa Monilinia sp. [anamorph]Sclerotinia sclerotiorum |
| Hull rot | Monilinia spp.Monilinia fructicolaMonilinia laxaRhizopus arrhizusRhizopus circinansRhizopus stolonifer |
| Kernel decay | Aspergillus nigerA. flavusA. parasiticus |
| Leaf blight | Discostroma corticola Seimatosporium lichenicola [anamorph] |
| Leaf curl | Taphrina deformans |
| Leucostoma canker | Leucostoma cincta Leucocytospora cincta [anamorph]Leucostoma persoonii Leucocytospora leucostoma [anamorph] |
| Phomopsis canker and fruit rot | Phomopsis amygdali = Fusicoccum amygdali |
| Phytophthora root and crown rot | Phytophthora spp.Phytophthora cactorumPhytophthora cambivoraPhytophthora cinnamomiPhytophthora citricolaPhytophthora citrophthoraPhytophthora cryptogeaPhytophthora drechsleriPhytophthora megaspermaPhytophthora nicotianae var. parasiticaPhytophthora syringae |
| Powdery mildew | Podosphaera tridactyla var. tridactyla Oidium passerinii [anamorph] Sphaerotheca pannosa [anamorph] |
| Pythium root rot | Pythium spp. |
| Red leaf blotch | Polystigma ochraceum |
| Rust  = Stone fruit rust | Tranzschelia discolor |
| Scab | Venturia carpophila Cladosporium carpophilum [anamorph] |
| Shot hole | Wilsonomyces carpophilus = Stigmina carpophila |
| Silver leaf | Chondrostereum purpureum |
| Verticillium wilt  = Blackheart | Verticillium dahliae |

## Nematode diseases

Nematode diseases of almond include:
| Dagger nematode | Xiphinema americanum |
| Ring nematode | Mesocriconema xenoplax |
| Root-knot nematode | Meloidogyne arenariaMeloidogyne haplaMeloidogyne incognitaMeloidogyne javanica |
| Root-lesion nematode | Pratylenchus penetransPratylenchus vulnus |

## Viral diseases

Viruses infecting almond include:
| Calico | genus Ilarvirus, Prunus necrotic ringspot virus (PNRSV) |
| Enation | genus Nepovirus, Tomato black ring virus (TBRV) |
| Infectious bud failure | genus Ilarvirus, Prunus necrotic ringspot virus (PNRSV) |
| Peach mosaic | Cherry mottle leaf virus |
| Peach yellow bud mosaic | genus Nepovirus, Tomato ringspot virus (ToRSV) |

## Miscellaneous diseases and disorders

Unknown or non-infectious disorders include:
| Bryobia mite | insect infestation |
| Corky growth (on leaves) | Physiological |
| Corky spot (on kernels) | Unknown |
| Foamy canker | Unknown |
| Noninfectious bud failure = Crazy top | Genetic |
| Nonproductive syndrome = Bull trees | Unknown |
| Union mild etch | Unknown |