List of oat diseases
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 
 | 
| Blast | Unfavorable environmental conditions and/or any of several pathogens | 
| Downy mildew | |
| Ergot | 
 | 
| Fusarium foot rot | |
| Head blight | Bipolaris sorokiniana 
 Drechslera avenacea 
 Other Fusarium spp. | 
| Leaf blotch and crown rot (Helminthosporium leaf blotch) | 
 
 | 
| Powdery mildew | Erysiphe graminis f. sp. avenae 
 | 
| Red leather disease | Spermospora avenae [anamorph] | 
| Rhizoctonia root rot | 
 | 
| Root rot | 
 Fusarium spp.  | 
| Rust, crown | |
| Rust, stem | |
| Seedling blight | Bipolaris sorokiniana | 
| Sharp eyespot | 
 | 
| Smut, covered | 
 | 
| Smut, loose | Ustilago avenae | 
| Snow mold, pink (Fusarium patch) | 
 | 
| Snow mold, speckled or gray (Typhula blight) | |
| Speckled blotch (Septoria blight) | 
 | 
| Take-all (white head) | Gaeumannomyces graminis var. avenae | 
| Victoria blight | Bipolaris victoriae  | 
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 | |
| Cyst, oat or cereal | |
| Cyst | Heterodera hordecalis | 
| Dagger, American | |
| Lesion | |
| Pin | Pratylenchus spp. | 
| Ring | Criconemella spp.  | 
| Root-knot | |
| Sheath | Hemicycliophora spp. | 
| Spiral | Helicotylenchus spp. | 
| Sting | |
| Stubby-root | |
| Stunt | Quinisulcius capitatus | 
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 | 
