Data Enrichment
Diseases with Causal Agents
Diseases with identified causal agents (pathogens). Agent identification is the first step toward targeted management recommendations.
383 of 386 diseases
Alder Canker
[VERIFY]
Alder Rust
Melampsoridium alni, Melampsoridium hiratsukanum
Alkali Yellows
Alkali yellows
Alternaria Fruit Rot
Alternaria spp
Alternaria Leaf Spot
Alternaria spp
Annosus Root Rot
Heterobasidion annosum (syn
Anthracnose (Shade Trees)
Discula destructiva (dogwood), Kabatiella and Discula spp
Anthracnose Blotch
Ophiognomonia leptostyla (syn
Apple Mosaic
Apple mosaic
Apple Proliferation
Apple proliferation
Armillaria Root Rot
Armillaria spp
Ascospora Dieback
Seimatosporium lichenicola
Aspen Trunk Rot
Daldinia concentrica
Aster Yellows
Candidatus Phytoplasma asteris
Bacterial Blight
Pseudomonas syringae pv
Bacterial Brown Spot
Pseudomonas spp
Bacterial Canker
Pseudomonas syringae pv
Bacterial Leaf Spot
Xanthomonas spp
Bacterial Soft Rot, Blackleg, and Lenticel Rot
Pectobacterium spp
Bacterial Stem Rot
Pectobacterium carotovorum
Bacterial twig blight
Pseudomonas syringae (bacterial)
Bacterial Wetwood
Enterobacter cloacae and Klebsiella pneumoniae
Bacterial Wetwood Slime Flux
Multiple bacterial species, including Enterobacter cloacae, Klebsiella pneumo...
Bacterial Wilt
Corynebacterium sepedonicum
Basal Rot
Fusarium oxysporum
Basal Stem and Root Rot
Phytophthora spp
Berckmann's Blight
Hendersonia coniothyrium
Black Canker
An uncharacterized
Black Canker (Target Canker)
Ceratocystis fimbriata (black canker); Cytospora notastroma (target canker)
Black Dot
Colletotrichum coccodes
Black Knot
Apiosporina morbosa
Black Leaf Spot
Diplocarpon rosae
Black leg
Chalara thielavioides
Black Mold
Chlaropsis thielavioides
Black Root Rot
Thielaviopsis basicola
Black Spot
[NOTE: Diplocarpon rosae causes black spot on roses (Rosa spp
Black-Stain Root Disease
Leptographium wageneri
Blackberry Collapse
[VERIFY]
Blackleaf
Chalara spp
Blackline
Blackline virus
Blanks
[VERIFY]
Bleeding Canker
Phytophthora spp
Blue Mold Rot
Penicillium expansum
Boron Deficiency
Many commercial
Botryosphaeria Dieback
Botryosphaeria dothidea
Botryosphaeria Fruit Rot and Berry Speckle
Botryosphaeria spp
Botrytis cinerea (Gray Mold)
Botrytis cinerea
Box Blight
Calonectria pseudonaviculata
Boxwood Blight
Boxwood blight
Branch Canker
Symptom category — not a single disease
Brand and Common Canker
Two fungi
Brand canker
Kalmusia coniothorium
Break Viruses
Little Cherry Virus-1 and Little Cherry Virus-2
Brittle Decay
Kretzschmaria deusta
Broom Rust
Gymnosporangium libocedri
Brown Canker
Cryptosporella umbrina (anamorph: Diaporthe umbrina)
Brown Patch
Rhizoctonia solani
Brown Rot
Monilinia fructicola and M
Brown Rot Blossom Blight and Fruit Rot
Monilinia fructicola and M
Brown Spot and Black Pit
Pseudomonas syringae
Brown Stain
Cryptosporella umbrina
Bud Blight
Seifertia azaleae
Bud Failure
Abiotic or viral
Bulb Rots
Fusarium spp
Bulb Rots (Bacterial Soft Rots, Enterobacter Bulb Decay, Slippery Skin, Sour Skin, and Yeast Soft Rot)
Pectobacterium carotovorum and Enterobacter spp
Bull's-eye Rot
Neofabraea malicorticis (anamorph: Cryptosporiopsis curvispora), N
Cane and Leaf Spot
Sphaerulina westendorpii (formerly Septoria rubi) on Rubus; Diaporthe ampelin...
Cane Blight
Kalmusia coniothyrium
Canker
Symptom category — not a single disease
Canker and Stem Diseases
[VERIFY]
Catkin Hypertrophy and Leaf Curl
Viral agents
Cercospora Leaf Spot
Cercospora hydrangeae Ellis & Everh
Charcoal Rot
Macrophomina phaseolina
Cherry Mottle Leaf
Cherry mottle leaf virus
Cherry Twisted Leaf
Cherry twisted leaf-associated virus
Chestnut Blight
Cryphonectria parasitica (syn
Clover Broom-rape
Orobanche minor
Common And Yellow Mosaics
Bean common mosaic virus and Bean yellow mosaic virus
Common canker
Coniothyrium wernsdorffiae and Paraconiothyrium fuckelii
Common Leaf Spot
Ramularia grevilleana
Common Scab
Streptomyces scabies
Coniophora Growth
Fungal growth
Corky Ringspot
Tobacco rattle virus (TRV)
Corm Rot
Fusarium spp
Coryneum blight (Shothole)
Wilsonomyces carpophilus
Cottonball
Abiotic (symptom)
Crinkle Leaf and Deep Suture
Believed to
Crown and Cane Gall
Agrobacterium tumefaciens
Crown and Collar Rot
Phytophthora cactorum (primary), P
Crown Gall
Rhizobium radiobacter (formerly Agrobacterium tumefaciens)
Crown Rot
Phytophthora cactorum
Crumbly Fruit
Raspberry bushy dwarf virus (RBDV) + raspberry leaf mottle virus (RLMV) complex
Cryptosphaeria Canker (Snake Canker)
Cryptosphaeria punctata
Cucumber mosaic virus
Cucumber mosaic virus
Curly Top
Beet curly top virus
Cutting Rots
Multiple soilborne and waterborne pathogens cause cutting rots, including Pyt...
Cyclaneusma Needle Cast
Cyclaneusma minus
Cylindrocarpon Root Rot
Cylindrocarpon spp
Cylindrocladium Blight and Root Rot
Cylindrocladium scoparium
Cylindrocladium Root Rot
Cylindrocladium spp
Cytospora Canker
Cytospora spp
Damping-off
Several soilborne
Damping-off (Seed and Seedling Rot)
Pythium spp
Dasheen Mosaic
Dasheen mosaic virus (DsMV)
Daylily Rust
Puccinia hemerocallidis
Dead Bud
Abiotic or frost injury
Dead Spur
Apple dead
Decline
Pear decline
Decline/Collapse Syndrome
Candidatus Phytoplasma pyri
Die-off
Pythium spp
Diplodia Canker
Diplodia seriata and D
Diseases
[AUDIT NOTE] This is a malformed bulk-import artifact, not a real disease pro...
Dodder
Cuscuta spp
Dollar Spot
Clarireedia jacksonii
Dothistroma Needle Blight (Red Band)
Dothistroma septosporum (and/or D
Double Streak
Potato virus Y + Potato virus X co-infection
Downy Leaf Spot
Pseudomicrostroma juglandis (syn
Downy Mildew
Multiple obligate oomycetes (Peronosporaceae); species are highly host-specific
Drippy Dieback
Lonsdalea quercina subsp
Dry Berry
Described as
Dry Cell (Dry Berry) Syndrome
Monilinia rubi
Dutch Elm Disease
Ophiostoma novo-ulmi
Dwarf Mistletoe
Arceuthobium spp
Early Blight
Alternaria solani
Early Leaf Spot
Phyllosticta cotoneastri (primary); Entomosporium maculatum (secondary)
Eastern Filbert Blight
Anisogramma anomala
Elytroderma Needle Cast
Elytroderma deformans
Eola Rasp Leaf (Yellow Bud Mosaic)
Eola rasp
Esca, Young Esca, and Petri Disease
Phaeomoniella chlamydospora, Phaeoacremonium aleophilum, Fomitiporia mediterr...
Eutypa Dieback
Eutypa lata
Fabraea Leaf Spot
Fabraea maculata
False Blossom
Cranberry false blossom virus
Fasciation
Multiple possible causes (see Disease Cycle section)
Fig Mosaic Disease
Fig mosaic virus
Fire Blight
Erwinia amylovora
Flat Apple Disease
Apple flat
Flower and Petal Blight
Ciborinia camelliae
Frosty Mildew
Microstroma album
Fruit Rot
Phytophthora cactorum
Fruit Russeting
Fruit russet
Fungal Cankers
Although bacterial
Fungal leaf spots
Phyllosticta sp
Fusarium Bulb Rot of Onion and Garlic (Dry Rot)
Fusarium oxysporum f
Fusarium Dry Rot
Fusarium spp
Fusarium Root Rot
Fusarium spp
Fusarium Wilt
Fusarium oxysporum
Fusicoccum Canker (Godronia Canker)
Godronia cassandrae
Ganoderma Root and Butt Rot
Ganoderma applanatum
Grapevine Red Blotch Disease
Grapevine red blotch virus
Grapevine Trunk Disease
Eutypa lata, Botryosphaeria spp
Gray Blight
Pestalotiopsis sydowiana
Gray Leaf Spot
Pyricularia grisea
Green Algae
Green algae
Green Dwarf (Curly Top)
Beet curly top virus (BCTV)
Grovesiella Canker
Grovesiella punctata
Gummy Stem Blight (Vine Decline)
Stagonosporopsis cucurbitacearum (syn
Heterobasidion Root Disease
Heterobasidion annosum
Hypocotyl Rot and Root Rot
In most
Impatiens Necrotic Spot
Impatiens necrotic spot virus (INSV)
Inflorescence Necrosis (Bunch Stem Necrosis)
Viral agents
Ink Spot
[VERIFY]
Inonotus Root and Butt Rot
Pseudoinonotus dryadeus
Interior Needle Blight
Multiple fungi (Rhizosphaera spp
Iris Yellow Spot
Iris yellow spot virus (IYSV)
Kernel Molds
Fungal agents (multiple)
Laminated Root Rot
Coniferiporia sulphurascens
Late Blight
Phytophthora infestans
Latent Virus Diseases
Three viruses
Latent Viruses
Various latent viruses
Leaf And Cane Spot
[VERIFY]
Leaf and Flower Gall
Exobasidium vaccinii
Leaf and Shoot Blight
[VERIFY]
Leaf and Stem Blight
Pseudonectria buxi (asexual: Volutella buxi) and P
Leaf Blight
Symptom category — not a single disease
Leaf Blight (Keithia Blight)
Didymascella thujina
Leaf Blister
Taphrina spp
Leaf Curl
Taphrina deformans
Leaf Gall
Abiotic or fungal
Leaf Gall (Blisters)
Abiotic or fungal
Leaf Mold
Passalora fulva (syn
Leaf Rust
Uredinales (rust fungi)
Leaf Scorch And Leaf Roll
Sphaerulina azaleae (formerly Septoria azaleae)
Leaf Spot
Symptom category — not a single disease
Leaf spot (Diplocarpon)
Diplocarpon spp
Leaf Spots and Blights
Phyllosticta sp
Leaf Spots and Shothole
Phyllosticta sp
Leaf Spots, Miscellaneous
Several fungal (primarily Rosisphaerella rosicola/Cercospora and Elsinoe rosa...
Leafroll
Grapevine leafroll virus
Leak
Pythium spp
Leather Rot
Phytophthora cactorum
Lilac Ring Mottle
Lilac ring mottle virus
Little Cherry
Little cherry virus-1 and Little cherry virus-2
Lophodermella Needle Cast
Lophodermella concolor
Lophodermium Needle Cast
Lophodermium spp
Lower Stem Canker
[VERIFY]
Madrone Canker
[VERIFY]
Marginal leaf necrosis
Xylella fastidiosa
Marssonina leaf and twig spot
Marssonina spp
Medusa Needle Blight
Davisomycella medusa
Microdochium Patch (Pink Snow Mold)
Microdochium nivale (formerly Fusarium nivale)
Mistletoe (a True Mistletoe)
Phoradendron villosum
Moldy Core and Core Rots
Several different
Mosaic
Apple mosaic virus (ApMV)
Mummy Berry
Monilinia vaccinii-corymbosi
Neck Rot
Botrytis allii
Necrotic Leaf Spot
Isolation attempts
Necrotic Ring Spot
Ophiosphaerella korrae
Necrotic Ringspot
Rhododendron necrotic ringspot virus
Necrotic rusty mottle
Necrotic rusty mottle virus (uncharacterized)
Necrotic Rusty Mottle (Lambert Mottle) and Rusty Mottle
Uncharacterized graft
Nectria Canker
Neonectria ditissima
Nectria Twig Blight (Coral Spot)
Nectria cinnabarina
Needle Blight
Sirococcus conigenus, S
Needle Cast
Rhabdocline spp
Needle Cast, Rhabdocline
Rhabdocline spp
Needle Drop
Abiotic or environmental stress
Nematode, Bud and Leaf
Aphelenchoides spp
Nematode, Clover-cyst
Heterodera trifolii
Nematode, Dagger
Xiphinema americanum and related species
Nematode, Foliar
Aphelenchoides fragariae
Nematode, Lesion
Pratylenchus spp
Nematode, Potato Cyst
Globodera spp
Nematode, Potato Rot
Ditylenchus destructor
Nematode, Ring
Mesocriconema spp
Nematode, Root-knot
Meloidogyne hapla
Nematode, Root-lesion
Pratylenchus penetrans (primary) and P
Nematode, Stem and Bulb
Ditylenchus dipsaci
Nematode, Stubby-root
Paratrichodorus renifer
Nematode, Stunt
Tylenchorhynchus claytoni
Nematodes
Various plant-parasitic nematode genera
Olive Leaf Spot (Peacock Spot, Peacock's Eye)
Spilocea oleagina (syn
Orange Rust
Arthuriomyces peckianus
Ovulinia Petal Blight
Ovulinia azaleae
Pear Scab
Venturia pirina
Pecky Rot
Postia amara
Pencil Rot (Brown Pocket Rot)
Postia sericiomollis
Peony Red Spot
[VERIFY]
Phyllody
Candidatus Phytoplasma spp
Phyllosticta Leaf Spot
Phyllosticta spp
Phytophthora Canker
Phytophthora syringae
Phytophthora fruit rot
Phytophthora spp
Phytophthora Leaf and Twig Blight
Phytophthora ilicis
Phytophthora ramorum (Ramorum Blight / Sudden Oak Death)
Phytophthora ramorum
Phytophthora Root Rot
Phytophthora spp
Pine Wilt
Bursaphelenchus xylophilus
Pink Root
Setophoma terrestris (syn
Pink Rot
Phytophthora erythroseptica
Pinot Leaf Curl
Apples chlorotic leaf spot virus (ACLSV)
Pitting
Multiple fungal agents
Plum Pockets
Taphrina pruni
Plum Pox (Sharka)
Plum pox virus (PPV)
Port Orford cedar root rot
Phytophthora lateralis
Postharvest Rots
Many fungi
Potato Leafroll Virus (Leaf Roll)
Potato leafroll virus (PLRV)
Potato Mop-Top Virus
Potato mop-top virus (PMTV)
Potato Rugose Mosaic
Potato virus Y (PVY) + Potato virus X (PVX)
Potato Virus Y
Potato virus Y (PVY)
Potato Wart
Synchytrium endobioticum
Powdery Mildew
Multiple obligate biotrophic fungi (Erysiphales: Erysiphaceae); species vary ...
Powdery Scab
Spongospora subterranea
Prune Dwarf
Prune dwarf
Prunus Necrotic Ringspot
Prunus necrotic ringspot virus (PNRSV)
Punky Bulb
Abiotic or Fusarium spp
Purple Blotch
Thrips tabaci
Purple Needle Eater (Delphinella Shoot Blight)
Delphinella balsameae
Purple Spot
Alternaria porri
Pyrenobotrys Leaf Spot
Pyrenobotrys compacta
Pythium Crown and Root Rot
Pythium spp
Rasp Leaf
Cherry rasp
Red Leaf
Blueberry leaf mottle virus or Abiotic
Red Leaf Spot
Phyllosticta cotoneastri
Red Leaf Spotting
Several factors
Red Shoot
Phytophthora spp
Red Spot Fruit Blemish (Freckles)
Xanthomonas arboricola pv
Red Thread
Laetisaria fuciformis
Replant Disease
Pythium spp
Rhabdocline needle cast
Rhabdocline pseudotsugae
Ring Rot
Clavibacter michiganensis subsp
Ringspot
Tomato ringspot
Ringspot Disease
Camellia ringspot virus
Ripe Rot (Anthracnose)
Colletotrichum spp
Root and Crown Rot
Phytophthora cinnamomi
Root and Stem Rot
Phytophthora syringae
Root Rot
Symptom category — not a single disease
Rose Mosaic
Prunus necrotic ringspot virus (PNRSV), Apple mosaic virus (ApMV), Arabis mos...
Rosette
This problem
Rubbery Wood and Flat Limb
Apple rubbery wood virus 1 and 2
Rugose
[VERIFY] (multiple possible causes)
Rust
Thekopsora minima and Naohidemyces vaccinii
Rust (Brown Rust)
Puccinia spp
Rust (Pucciniastrum)
Pucciniastrum spp
Rust (Uredinopsis)
Uredinopsis spp
Rusty Spot
Chrysomyxa piperiana
Salt Damage
Excess sodium chloride
Scab
Venturia spp
Scar Skin and Dapple Apple
Apple scar skin viroid
Schweinitzii root and butt rot
Phaeolus schweinitzii
Sclerotinia White Mold
Sclerotinia sclerotiorum
Scorch
Blueberry scorch virus (BlScV)
Seed Piece Decay
Fusarium spp
Seiridium Canker
Seiridium cardinale
Septoria Leaf Spot
Septoria spp
Shock
Blueberry shock virus (BlShV)
Shoot Blight
Multiple pathogens cause shoot blight on different hosts: Phytophthora cactor...
Shoot Proliferation and Leafy Gall
Rhodococcus fascians
Shoot Tip Dieback
Phomopsis spp
Short Shoot Syndrome
Phytoplasma spp
Shothole
Stigmina carpophila or Diaporthe spp
Shothole (Coryneum Blight)
Stigmina carpophila
Silver Leaf
Chondrostereum purpureum
Silver Scurf
Helminthosporium solani
Sirococcus Shoot Blight
Sirococcus conigenus
Slime Mold
Physarum spp
Smut
Ustilago spp
Soft Rot
Pectobacterium spp
Sooty Bark Disease
Cryptostroma corticale
Sooty Mold
Fumago vagans
Sooty Mold (Black Mold)
Saprophytic fungi
Sour Rot
Geotrichum candidum
Southern Blight
Athelia rolfsii (syn
Sparassis Root Rot
Sparassis crispa (syn
Spotted Wilt
Tomato spotted wilt virus (TSWV)
Spring Black Stem and Leaf Spot (Black Stem)
Phoma medicaginis (syn
Spur Blight
Xenodidymella applanata
Stamen Blight
Anthophora dendrobii or Botryotinia fuckeliana
Stem Canker
Botryosphaeria corticis
Stem Decay
Fomitopsis officinalis, Porodaedalea pini, and other wood-decay fungi
Stem Pitting
Several causes
Stem Rot
Phytophthora syringae (primary), P
Stemphylium Leaf Blight and Stalk Rot
Stemphylium vesicarium
Stigmina Blight
Pseudocercospora thujina
Stony Pit
Graft-transmissible virus (causal virus not definitively identified)
Storage Problems
Botrytis cinerea, Penicillium spp
Storage Rots
Penicillium spp
Stripe Smut
Ustilago striiformis
Stunt
Blueberry stunt phytoplasma
Stunt (Dilly)
Daffodil yellow stripe virus (DYVV)
Swiss needle cast
Nothophaeocryptopus gaeumannii
Sycamore Anthracnose
Apiognomonia veneta (syn
Take All Patch
Gaeumannomyces avenae (syn
Tar Spots
Rhytisma punctatum
Thousand Cankers Disease
Geosmithia morbida (vectored by Pityophthorus juglandis)
Tip Blight
Diaporthe vaccinii or Diplodia tip blight agents
Tomato Mosaic
Tomato mosaic virus (ToMV)
Tomato Yellow Leaf Curl
Tomato yellow leaf curl virus (TYLCV)
Toxic Cucumber
[VERIFY] (specific agent unclear)
Trellis Rust (European Pear Rust)
Gymnosporangium sabinae
Twig Blight
Multiple fungal species cause twig blight on different hosts: Diaporthe vacci...
Twig Blight (Scab)
Venturia spp
Twig blight (Venturia)
Venturia spp
Twig Canker
Sporocadus lichenicola
Twig Dieback
Phacidiopycnis washingtonensis
Typhula Snow Mold
Typhula incarnata and T
Union Necrosis and Decline
Tomato ringspot
Upper and Lower Stem Canker (Phoma Blight)
Phoma eupyrena
Upper stem canker
Diaporthe phaseolorum
Upright Dieback
Diaporthe vaccinii (asexual: Phomopsis vaccinii)
Variegation
Both a
Vascular Streak Dieback
Ceratobasidium theobromae (syn
Vein Yellows (Red Mottle and Sooty Ringspot of Quince)
Vein yellows
Verticillium Wilt
Verticillium dahliae
Virus
Raspberry bushy dwarf virus and related viruses
Virus and Virus-like Diseases
Multiple plant viruses
Virus Diseases
Blueberry mosaic virus and related viruses
Virus-induced Cherry Decline
Cherry leafroll virus (CLRV); complex with prune dwarf virus, Prunus necrotic...
Volutella Leaf and Stem Blight (Canker)
Pseudonectria buxi
Walnut Blight
Xanthomonas arboricola pv
Web Blight
Rhizoctonia spp
Western Gall Rust
Endocronartium harknessii
White Mottled Rot
Sclerotinia spp
White Pine Blister Rust
Cronartium ribicola
White Pocket Rot (Piped Rot)
Inonotus dryophilus
White Rot
Stromatinia cepivora (syn
White Rust
Albugo candida
Witches' Broom
Taphrina wiesneri
Witches' Broom Rust
Gymnosporangium spp
Wood Decay
Multiple Basidiomycete fungi cause wood decay in trees
X-Disease
Candidatus Phytoplasma pruni
Yellow Root Rot
Perreniporia subacida
Yellow Rust
Phragmidium rubi-idaei
Yellow Vein
Strawberry yellow edge virus (StYEV)
Young Vine Decline
Phaeomoniella chlamydospora, Phaeoacremonium spp
Zebra Chip
Candidatus Liberibacter solanacearum