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Diseases of Oats
(Avena sativa L.)

A. H. Epstein and M. D. Simons, primary collators (last update 3/11/93)

BACTERIAL DISEASES

Bacterial blight (halo blight)

Pseudomonas syringae pv. coronafaciens (Elliott) Young et al.

Bacterial stripe blight

Pseudomonas syringae pv. striafaciens (Elliott) Young et al.

Black chaff and bacterial streak (stripe)

Xanthomonas campestris pv. translucens (Jones et al.) Dye

FUNGAL DISEASES

Anthracnose

Colletotrichum graminicola (Ces.) G.W. Wils.

(teleomorph: Glomerella graminicola Politis)

Blast

Unfavorable environmental conditions and/or any of several pathogens

Downy mildew

Sclerophthora macrospora (Sacc.) Thirumalachar et al.

Ergot

Claviceps purpurea (Fr.:Fr.) Tul.

(anamorph: Sphacelia segetum Lév.)

Fusarium foot rot

Fusarium culmorum (Wm. G. Sm.) Sacc.

Head blight

Bipolaris sorokiniana (Sacc.) Shoemaker

(teleomorph: Cochliobolus sativus (Ito & Kuribayashi)
    Drechs. ex Dastur)

Drechslera avenacea (M.A. Curtis ex Cooke) Shoemaker

Fusarium graminearum Schwabe

(teleomorph: Gibberella zeae (Schwein.) Petch)

Fusarium spp.

Leaf blotch and crown rot (Helminthosporium leaf blotch)

Drechslera avenacea (M.A. Curtis ex Cooke) Shoemaker

= Helminthosporium avenaceum M.A. Curtis ex Cooke

D. avenae (Eidam) Scharif

= H. avenae Eidam

(teleomorph: Pyrenophora avenae Ito & Kuribayashi)

Powdery mildew

Erysiphe graminis DC. f. sp. avenae Em. Marchal

E. graminis DC.

(anamorph: Oidium monilioides (Nees) Link)

Rhizoctonia root rot

Rhizoctonia solani Kühn

(teleomorph: Thanatephorus cucumeris (A.B. Frank) Donk)

Root rot

Bipolaris sorokiniana (Sacc.) Shoemaker

Fusarium spp.

Pythium spp.

P. debaryanum Auct. non R. Hesse

P. irregulare Buisman

P. ultimum Trow

Rust, crown

Pucciniacoronata Corda

Rust, stem

Puccinia graminis Pers.

Seedling blight

Bipolaris sorokiniana (Sacc.) Shoemaker

Drechslera avenae (Eidam) Scharif

Fusarium culmorum (Wm. G. Sm.) Sacc.

Pythium spp.

Rhizoctonia solani Kühn

Sharp eyespot

Rhizoctonia cerealis Van der Hoeven

(teleomorph: Ceratobasidium cereale D. Murray &
    L.L. Burpee)

Smut, covered

Ustilago segetum (Bull.:Pers.) Roussel

= U. kolleri Wille

Smut, loose

Ustilago avenae (Pers.) Rostr.

Snow mold, pink (Fusarium patch)

Microdochium nivale (Fr.) Samuel & I.C. Hallett

= Fusarium nivale Ces. ex Berl. & Voglino

(teleomorph: Monographella nivalis (Schaffnit) E. Müller)

Snow mold, speckled or gray (Typhula blight)

Typhula idahoensis Remsberg

T. incarnata Lasch:Fr.

T. ishikariensis Imai

Speckled blotch (Septoria blight)

Stagonospora avenae (A.B. Frank) Bissett

= Septoria avenae A.B. Frank

(teleomorph: Phaeosphaeria avenaria G. F. Weber)
    O. Eriksson)

Take-all (white head)

Gaeumannomyces graminis (Sacc.) Arx & D. Olivier var.
    avenae (E.M. Turner) Dennis

G. graminis (Sacc.) Arx & D. Olivier

Victoria blight

Bipolaris victoriae (F. Meehan & Murphy) Shoemaker

(teleomorph: Cochliobolus victoriae R.R. Nelson)

MISCELLANEOUS DISEASES OR DISORDERS

Blast

Unfavorable environmental conditions and/or any of several pathogens

Gray streak

Manganese deficiency

Physiological leaf spot

Genetic predisposition

NEMATODES, PARASITIC

Bulb and stem (in Europe)

Ditylenchus dipsaci (Kühn) Filipjev

Cyst, oat or cereal

Heterodera avenae Wollenbeber

Cyst

Heterodera hordecalis Andersson

H. latipons Franklin

Punctodera chalcoensis Stone et al.

Dagger, American

Xiphinema americanum Cobb

Lesion

Pratylenchus spp.

P. thornei Sher & Allen

Pin

Pratylenchus spp.

Ring

Criconemella spp.

Nothocriconemella mutabilis (Taylor) Ebsary and other spp.

Root-knot

Meloidogyne spp.

M. chitwoodi Golden et al.

M. naasi Franklin

Sheath

Hemicycliophora spp.

Spiral

Helicotylenchus spp.

Sting

Belonolaimus longicaudatus Rau

Stubby-root

Paratrichodorus minor (Colbran) Siddiqi

Stunt

Quinisulcius capitatus (Allen) Siddiqi

Tylenchorhynchus spp.

Merlinius spp.

VIRUS DISEASES

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