This article is a list of diseases of the cultivated oat Avena sativa.

Bacterial diseases

Bacterial diseases
Bacterial blight (halo blight) Pseudomonas coronafaciens pv. coronafaciens
Bacterial stripe blight Pseudomonas coronafaciens pv. striafaciens
Black chaff and bacterial streak (stripe) Xanthomonas campestris pv. translucens

Fungal diseases

Fungal diseases
Anthracnose

Colletotrichum graminicola

Glomerella graminicola [teleomorph]
Blast

Unfavorable environmental conditions and/or any of several pathogens

Downy mildew

Sclerophthora macrospora

Ergot

Claviceps purpurea

Sphacelia segetum [anamorph]
Fusarium foot rot

Fusarium culmorum

Head blight

Bipolaris sorokiniana

Cochliobolus sativus [teleomorph]

Drechslera avenacea
Fusarium graminearum

Gibberella zeae [teleomorph]

Other Fusarium spp.

Leaf blotch and crown rot (Helminthosporium leaf blotch)

Drechslera avenacea

= Helminthosporium avenaceum

Drechslera avenae

= Helminthosporium avenae
Pyrenophora avenae [teleomorph]
Powdery mildew

Erysiphe graminis f. sp. avenae
E. graminis

Oidium monilioides [anamorph]
Red leather disease

Spermospora avenae [anamorph]

Rhizoctonia root rot

Rhizoctonia solani

Thanatephorus cucumeris [teleomorph]
Root rot

Bipolaris sorokiniana

Cochliobolus sativus [teleomorph]

Fusarium spp.
Pythium spp.
P. debaryanum
P. irregulare
P. ultimum

Rust, crown

Puccinia coronata

Rust, stem

Puccinia graminis

Seedling blight

Bipolaris sorokiniana
Cochliobolus sativus [teleomorph]
Drechslera avenae
Fusarium culmorum
Pythium spp.
Rhizoctonia solani

Sharp eyespot

Rhizoctonia cerealis

Ceratobasidium cereale [teleomorph]
Smut, covered

Ustilago segetum

= U. kolleri
Smut, loose Ustilago avenae
Snow mold, pink (Fusarium patch)

Microdochium nivale

= Fusarium nivale
Monographella nivalis [teleomorph]
Snow mold, speckled or gray (Typhula blight)

T. idahoensis
T. incarnata
T. ishikariensis

Speckled blotch (Septoria blight)

Stagonospora avenae

= Septoria avenae
Phaeosphaeria avenaria [teleomorph]
Take-all (white head)

Gaeumannomyces graminis var. avenae
Other G. graminis strains

Victoria blight

Bipolaris victoriae
Cochliobolus victoriae [teleomorph]

Miscellaneous diseases or disorders

Miscellaneous diseases or disorders
Blast Unfavorable environmental conditions and/or any of several pathogens
Gray streak Manganese deficiency
Physiological leaf spot Genetic predisposition

Nematodes

Nematodes, parasitic
Bulb and stem

Ditylenchus dipsaci

Cyst, oat or cereal

Heterodera avenae

Cyst

Heterodera hordecalis
Heterodera latipons
Punctodera chalcoensis

Dagger, American

Xiphinema americanum

Lesion

Pratylenchus spp.
Pratylenchus thornei

Pin

Pratylenchus spp.

Ring

Criconemella spp.
Nothocriconemella mutabilis and other spp.

Root-knot

Meloidogyne spp.
M. chitwoodi
M. naasi

Sheath

Hemicycliophora spp.

Spiral

Helicotylenchus spp.

Sting

Belonolaimus longicaudatus

Stubby-root

Paratrichodorus minor

Stunt

Quinisulcius capitatus
Tylenchorhynchus spp.
Merlinius spp.

Viruses

Viruses
Oat blue dwarf Oat blue dwarf virus
Oat mosaic Oat mosaic virus
Oat necrotic mottle Oat necrotic mottle virus
Oat red leaf Barley yellow dwarf virus

References

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