This article is a list of diseases of papaya (Carica papaya).

Bacterial diseases

Bacterial diseases
Bacterial canker Erwinia sp.
Bacterial leaf spot Pseudomonas caricapapayae
Bacterial wilt Pseudomonas solanacearum
Papaya Bunchy Top Disease Rickettsia
Erwinia decline Erwinia sp.
Erwinia mushy canker Erwinia sp.
Internal yellowing Enterobacter cloacae
Purple stain Erwinia herbicola

Fungal diseases

Fungal diseases
Alternaria fruit spot

Alternaria alternata

Angular leaf spot

Leveillula taurica

Anthracnose

Colletotrichum gloeosporioides

Black spot

Asperisporium caricae
Cercospora papayae
Phomopsis caricae-papayae

Blossom spot Choanephora cucurbitarum
Black rot Mycosphaerella caricae
Brown spot

Corynespora cassiicola
= Cercospora melonis
= Cercospora vignicola
= Helminthosporium cassiicola
= Helminthosporium vignae
= Helminthosporium vignicola

Chocolate spot

Colletotrichum gloeosporioides

Collar rot

Cylindrocladium crotalariae
Calonectria crotalariae [teleomorph]

Damping off

Colletotrichum gloeosporioides
Phytophthora palmivora
Phytophthora nicotianae
= Phytophthora parasitica
Pythium aphanidermatum
Pythium debaryanum
Pythium ultimum
Pythium sp.
Rhizoctonia solani
Thanatephorus cucumeris [teleomorph]

Dry rot

Phoma caricae-papayae
= Ascochyta caricae
= Ascochyta caricae-papayae
Mycosphaerella caricae [teleomorph]

Foot rot

Pythium aphanidermatum
Pythium ultimum

Fruit rot

Monilia sp.

Fruit spot

Cercospora mamaonis

Fusarium fruit rot

Fusarium solani
Fusarium spp.

Guignardia spot

Guignardia sp.

Greasy spot

Corynespora cassiicola
= Cercospora melonis
= Cercospora vignicola
= Helminthosporium cassiicola
= Helminthosporium vignae
= Helminthosporium vignicola

Internal blight

Cladosporium sp.
Fusarium sp.
Penicillium sp.

Lasiodiplodia fruit rot

Lasiodiplodia theobromae
= Botryodiplodia theobromae
= Botryodiplodia gossypii
= Diplodia theobromae
= Diplodia gossypina
= Diplodia natalensis
= Lasiodiplodia triflorae

Leaf spot

Alternaria sp.
Asperisporium caricae
Cercospora mamaonis
Cercospora papayae
Choanephora cucurbitarum
Curvularia caricae-papayae
Gloeosporium sp.
Phoma caricae-papayae
Mycosphaerella caricae [teleomorph]
Phyllosticta sp.

Petiole spot Didymella sp.
Phytophthora blight

Phytophthora palmivora
Phytophthora nicotianae var. parasitica
= Phytophthora parasitica

Powdery mildew

Erysiphe cichoracearum
Erysiphe sp.
Oidium caricae
Oidium indicum
Ovulariopsis papayae
Sphaerotheca fuliginea
Sphaerotheca humuli

Phytophthora fruit rot

Phytophthora capsici
Phytophthora nicotianae var. parasitica
= Phytophthora parasitica
Phytophthora palmivora

Rhizopus soft rot

Rhizopus stolonifer = Rhizopus nigricans

Root rot

Phytophthora palmivora
Pythium aphanidermatum
Pythium ultimum
Pythium spp.
Rhizoctonia solani
Thanatephorus cucumeris [teleomorph]

Sclerotium blight

Sclerotium rolfsii
Athelia rolfsii [teleomorph]

Seedling blight

Colletotrichum gloeosporioides

Stem-end rot

Alternaria alterneta
Colletotrichum gloeosporioides
Fusarium sp.
Lasiodiplodia theobromae
= Botryodiplodia theobromae
= Botryodiplodia gossypii
= Diplodia theobromae
= Diplodia gossypina
= Diplodia natalensis
= Lasiodiplodia triflorae
Phoma caricae-papayae
= Ascochyta caricae
= Ascochyta caricae-papayae
Mycosphaerella caricae [teleomorph]
Phomopsis sp.
Rhizopus stolonifer

Stemphylium fruit spot

Stemphylium lycopersici
= Thyrospora lycopersici
= Stemphylium floridanum

Stem rot

Fusarium solani
Nectria haematococca [teleomorph]
Fusarium sp.
Phytophthora palmivora
Pythium aphanidermatum
Pythium ultimum

Target spot Phyllosticta caricae-papayae
Verticillium wilt Verticillium dahliae
Wet fruit rot Phomopsis sp.

Miscellaneous diseases and disorders

Miscellaneous diseases and disorders
Algal leaf spot Cephaleuros virescens
Bumpy fruit Boron deficiency
Freckles Physiological
Nivum Haamir dieback Unknown cause

Nematodes, parasitic

Nematodes, parasitic
Reniform nematode

Rotylenchulus reniformis
Rotylenchulus parvus

Root-knot nematode

Meloidogyne incognita
Meloidogyne javanica
Meloidogyne arenaria
Meloidogyne hapla

Phytoplasmal diseases

Phytoplasmal diseases
Dieback Phytoplasma
Yellow crinkle Phytoplasma

Viral and viroid diseases

Viral and viroid diseases
Apical necrosis Papaya apical necrosis virus
Droopy necrosis Papaya droopy necrosis virus
Feather leaf Unknown virus
Leaf curl Virus suspected
Mosaic Papaya mosaic virus
Papaya ringspot Papaya ringspot virus
Papaya lethal yellowing Papaya lethal yellowing virus
Spotted wilt Tomato spotted wilt virus
Sticky disease ('meleira') Papaya meleira virus complex
Terminal necrosis and wilt Tobacco ringspot virus

References

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