BACTERIAL DISEASES

Bacterial blight
Xanthomonas oryzae pv. oryzae (Ishiyama) Swings et al.
= X. campestris pv. oryzae (Ishiyama) Dye
Bacterial leaf streak
Xanthomonas oryzae pv. oryzicola (Ishiyama) Swings et al.
Foot rot
Erwinia chrysanthemi Burkholder et al.
Grain rot
Pseudomonas glumae Kurita & Tabei
Pecky rice (kernel spotting)
Damage by bacteria (see also underfungal and miscellaneous diseases)
Sheath brown rot
Pseudomonas fuscovaginae (ex Tanii et al.) Miyajima et al.

FUNGAL DISEASES

Aggregate sheath spot
Ceratobasidium oryzae-sativae Gunnell & Webster
(anamorph: Rhizoctonia oryzae-sativae (Sawada) Mordue)
Black kernel
Curvularia lunata (Wakk.) Boedijn
(teleomorph: Cochiobolus lunatus R.R. Nelson & Haasis)
Blast (leaf, neck [rotten neck], nodal and collar)
Pyricularia grisea Sacc. = P. oryzae Cavara
(teleomorph: Magnaporthe grisea (Hebert) Barr)
Brown spot
Cochliobolus miyabeanus (Ito & Kuribayashi) Drechs. ex Dastur (anamorph: Bipolaris oryzae(Breda de Haan) Shoemaker)
Crown sheath rot
Gaeumannomyces graminis (Sacc.) Arx & D. Olivier
Downy mildew
Sclerophthora macrospora (Sacc.) Thirumalachar et al.
Eyespot
Drechslera gigantea (Heald & F.A. Wolf) Ito
False smut
Ustilaginoidea virens (Cooke) Takah.
Kernel smut
Tilletia barclayana (Bref.) Sacc. & Syd. in Sacc.
= Neovossia horrida (Takah.) Padwick & A. Khan
Leaf smut
Entyloma oryzae Syd. & P. Syd.
Leaf scald
Microdochium oryzae (Hashioka & Yokogi) Samuels & I.C. Hallett = Rhynchosporium oryzaeHashioka & Yokogi
Narrow brown leaf spot
Cercospora janseana (Racib.) O. Const.
= C. oryzae Miyake
(teleomorph: Sphaerulina oryzina K. Hara)
Pecky rice (kernel spotting)
Damage by many fungi including Cochliobolus miyabeanus (Ito & Kuribayashi) Drechs. ex Dastur, Curvularia spp., Fusarium spp., Microdochium oryzae (Hashioka & Yokogi) Samuels & I.C. Halett, Sarocladium oryzae (Sawada) W. Gams & D. Hawksworth and other fungi.
Root rots
Fusarium spp.
Pythium spp.
P. dissotocum Drechs.
P. spinosum Sawada
Seedling blight
Cochliobolus miyabeanus (Ito & Kuribayashi) Drechs. ex
   Dastur, Curvularia spp., Fusarium spp., Rhizoctonia
   solani Kühn, Sclerotium rolfsii Sacc.
(teleomorph: Athelia rolfsii (Curzi) Tu & Kimbrough), and
   other pathogenic fungi.
Sheath blight
Thanatephorus cucumeris (A.B. Frank) Donk
(anamorph: Rhizoctonia solani Kühn)
Sheath rot
Sarocladium oryzae (Sawada) W. Gams & D. Hawksworth
= Acrocylindrium oryzae Sawada
Sheath spot
Rhizoctonia oryzae Ryker & Gooch
Stackburn (Alternaria leaf spot)
Alternaria padwickii (Ganguly) M.B. Ellis
Stem rot
Magnaporthe salvinii (Cattaneo) R. Krause & Webster
(synanamorphs: Sclerotium oryzae Cattaneo, Nakataea
   sigmoidae (Cavara) K. Hara)
Water-mold (seed-rot and seedling disease)
Achlya conspicua Coker
A. klebsiana Pieters
Fusarium spp.
Pythium spp.
P. dissotocum Drechs.
P. spinosum Sawada

MISCELLANEOUS DISEASES OR DISORDERS

Alkalinity or salt damage
Excessive salt concentration in soil or water
Bronzing
Zinc deficiency
Cold injury
Low temperatures
Panicle blight
Cause undetermined
Pecky rice (kernel spotting)
Feeding injury by rice stink bug
Straighthead
Arsenic induced, unknown physiological disorder
White tip (see nematodes)
Aphelenchoides besseyi Christie

NEMATODES, PARASITIC

Crimp nematode, summer
Aphelenchoides besseyi Christie
Root-knot
Meloidogyne spp.
Root nematode, rice
Hirschmaniella oryzae (Soltwedel) Luc & Goodey
Stem nematode, rice
Ditylenchus angustus (Butler) Filipjev

VIRUS DISEASES

(Also a mycoplasmalike organism [MLO] disease)

Giallume
Barley yellow dwarf virus
Rice black streak dwarf
Rice black streak dwarf virus (RGSDV)
Rice dwarf
Rice dwarf virus (RDV)
Rice grassy stunt
Rice grassy stunt virus (RGSV)
Rice hoja blanca
Rice hoja blanca virus (RHBV)
Rice necrotic mosaic
Rice necrotic mosaic virus (RNMV)
Rice rugged stunt
Rice rugged stunt virus (RRSV)
Rice stripe
Rice stripe virus (RStV)
Rice transitory yellowing
Rice transitory yellowing wirus (RTYV)
Rice yellow dwarf
MLO
Rice yellow mottle
Rice yellow mottle virus (RYMV)
Tungro (rice tungro disease) (RTD)
Rice tungro spherical virus (RTSV)
Rice tungro bacilliform virus (RTBV)
original Article Here

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