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Diseases of Rice




  • 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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