# List of rice diseases

This article is a list of diseases of rice (Oryza sativa). Diseases have historically been one of the major causes of rice shortages.$^{:434}$

## Bacterial diseases

Bacterial diseases :
| Bacterial blight | Xanthomonas oryzae pv. oryzae = X. campestris pv. oryzae |
| Bacterial leaf streak | Xanthomonas oryzae pv. oryzicola |
| Foot rot | Dickeya dadantii/Erwinia chrysanthemi |
| Grain rot | Burkholderia glumae |
| Pecky rice (kernel spotting) | Damage by bacteria (see also under fungal and miscellaneous diseases) |
| Sheath brown rot | Pseudomonas fuscovaginae |

## Fungal diseases

Fungal diseases :
| Aggregate sheath | Ceratobasidium oryzae-sativae Rhizoctonia oryzae-sativae [anamorph] |
| Black horse riding | Curvularia lunata Cochliobolus lunatus [teleomorph] |
| Blast (leaf, neck [rotten neck], nodal and collar) | Pyricularia grisea = Pyricularia oryzae Magnaporthe grisea [teleomorph] |
| Brown spot | Cochliobolus miyabeanus Bipolaris oryzae [anamorph] |
| Crown sheath rot | Gaeumannomyces graminis |
| Downy mildew | Sclerophthora macrospora |
| Eyespot | Drechslera gigantea |
| False smut | Ustilaginoidea virens |
| Kernel smut | Tilletia barclayana = Neovossia horrida |
| Leaf smut | Entyloma oryzae |
| Leaf scald | Microdochium oryzae = Rhynchosporium oryzae |
| Narrow brown leaf spot | Cercospora janseana = Cercospora oryzae Sphaerulina oryzina [teleomorph] |
| Pecky rice (kernel spotting) | Damage by many fungi including Cochliobolus miyabeanus Curvularia spp. Fusarium spp. Microdochium oryzae Sarocladium oryzae and other fungi. |
| Root rots | Fusarium spp. Pythium spp. P. dissotocum P. spinosum |
| Rust | Rice is immune to rusts. |
| Seedling blight | Cochliobolus miyabeanus Curvularia spp. Fusarium spp. Rhizoctonia solani Athelia rolfsii and other pathogenic fungi. |
| Sheath blight | Rhizoctonia solani |
| Sheath rot | Sarocladium oryzae = Acrocylindrium oryzae |
| Sheath spot | Waitea oryzae |
| Stackburn (Alternaria leaf spot) | Alternaria padwickii |
| Stem rot | Magnaporthe salvinii Sclerotium oryzae [synanamorph] |
| Water-mold (seed-rot and seedling disease) | Achlya conspicua A. klebsiana Fusarium spp. Pythium spp. P. dissotocum P. spinosum |

## Viruses

* Rice black-streaked dwarf virus
* Rice bunchy stunt virus
* Rice dwarf virus
* Rice gall dwarf virus
* Rice giallume virus
* Rice grassy stunt virus
* Rice hoja blanca tenuivirus
* Rice necrosis mosaic virus
* Rice ragged stunt virus
* Rice stripe necrosis virus
* Rice stripe tenuivirus
* Rice transitory yellowing virus
* Rice tungro bacilliform virus - see Tungro below
* Rice tungro spherical virus - see Tungro below
* Rice yellow mottle virus

## Miscellaneous diseases and disorders

Miscellaneous diseases and disorders :
| Alkalinity or salt damage | Excessive salt concentration in soil or water |
| Bronzing | Zinc deficiency |
| Cold injury | Low temperatures |
| Panicle blight | Cause undetermined |
| golden apple snail | Pomacea canaliculata |
| Pecky rice (kernel spotting) | Feeding injury by rice stink bug, Oebalus pugnax |
| Rice tungro | Complex virus (Rice tungro bacilliform virus and Rice tungro spherical virus) transmitted by green leafhopper Nephotettix spp.) |
| Straighthead | Arsenic induced, unknown physiological disorder |
| White tip (see nematodes) | Aphelenchoides besseyi |