Diseases of Spinach
(Spinacia oleracea L.)

Steven T. Koike, collator (last update 11/23/15)

Bacterial leaf spot: Pseudomonas syringae pv. Spinaciae van Hall
Bacterial soft rot: Pectobacterium carotovorum subsp. carotovorum (Jones) Hauben et al. emend.
Gardan et al.
(syn.: Erwinia carotovora subsp. carotovora (Jones) Bergey et al.)

Alternaria leaf spot: Alternaria alternata (Fr.) Keissl.; A. spinaciae Allesch. & F. Noack
Anthracnose: Colletotrichum dematium (Pers.) Grove
(syn.: C. spinaciae Ellis & Halst.)
Aphanomyces root rot: Aphanomyces cladogamus Drechs.; A. cochlioides Drechs.
Ascochyta leaf spot: Ascochyta spinaciae Bondartzeva-Monteverde
(syn.: A. boni-henrici)
Cercospora leaf spot: Cercospora beticola Sacc.
Cladosporium leaf spot: Cladosporium variabile (Cooke) G. A. de Vries
(syn.: Heterosporium variabile Cooke)
Damping-off: Pythium aphanidermatum (Edson) Fitzp.; P. irregulare Buisman
(syn.: Globisporangium irregulare (Buisman) Uzuhashi, Tojo, & Kakish); P. ultimum Trow
(syn.: Globisporangium ultimum (Trow) Uzuhashi, Tojo, & Kakish); Rhizoctonia solani J. G. Kühn
(syn.: Thanatephorus cucumeris (A. B. Frank) Donk)
Downy mildew (Blue mold): Peronospora effusa (Grev.) Rabenh.
(syn.: P. farinosa f. sp. spinaciae Byford)
Fusarium root rot: Fusarium oxysporum Schltdl.
Fusarium wilt: Fusarium oxysporum Schltdl.:Fr. f. sp. spinaciae (Sherb.) W. C. Snyder & H. H. Hansen
Phoma blight: Phoma nebulosa (Pers.) Berk.
Phyllosticta leaf spot: Phyllosticta spinacea Zimm.
(syn.: Neocamarosporium betae (Berl.) Ariyawansa)
Phytophthora root rot: Phytophthora cryptogea Pethbr. & Lafferty; P. megasperma Drechs.
Pleospora leaf spot (Phoma leaf spot): Pleospora betae (Berl.) Nevod.
(syns.: Neocamarosporium betae (Berl.) Ariyawansa; Phoma betae A. B. Frank)
Powdery mildew: Leveillula taurica (Lev.) G. Arnaud
(syn.: Oidiopsis taurica (Lev. E. S. Salmon))
Pythium root rot: Pythium aphanidermatum (Edson) Fitzp.; P. heterothallicum W. A. Campbell & F. F. Hendrix; P. sylvaticum W. A. Campbell & F. F. Hendrix; P. ultimum Trow
(syn.: Globisporangium ultimum (Trow) Uzuhashi, Tojo, & Kakish)
Ramularia leaf spot: Ramularia spinaciae Nypels
Rhizoctonia root and crown rot: Rhizoctonia solani J. G. Kuhn
(syn.: Thanatephorus cucumeris (A. B. Frank) Donk)
Rust: Puccinia aristidae Tracy
(syn.: Aecidium capsicum Jacz.)
Stemphylium leaf spot: Stemphylium botryosum Wallr.
Verticillium wilt: Verticillium dahliae Kleb.
White rust: Albugo occidentalis G. W. Wilson
White smut: Entyloma ellisii Halst.

Clover cyst nematode:: Heterodera trifolii Goffart
Lesion nematode:: Pratylenchus spp.
Root-knot nematode:: Meloidogyne spp.
Stubby-root nematodes:: Paratrichodorus minor (Colbran) Siddiqi; Trichodorus spp.
Sugarbeet cyst nematode:: Heterodera schachtii Schmidt

Tipburn: Calcium deficiency

Aster yellows: Aster yellows phytoplasma

Beet mosaic: Genus Potyvirus; Beet mosaic virus (BtMV)
Beet necrotic yellow vein: Genus Benyvirus; Beet necrotic yellow vein virus (BNYVV)
Beet western yellows: Genus Polerovirus; Beet western yellows virus (BWYV)
Broad bean wilt: Genus Fabavirus; Broad bean wilt virus (BBWV)
Cucumber mosaic: Genus Cucumovirus; Cucumber mosaic virus (CMV)
Curly top: Genus Curtovirus; Beet curly top virus (BCTV)
Impatiens necrotic spot: Genus Tospovirus; Impatiens necrotic spot virus (INSV)
Speckles disease (complex): Genus Polerovirus; Beet western yellows virus (BWYV); Genus Umbravirus; Lettuce speckles mottle virus (LSMV)
Spinach curly top: Genus Curtovirus; Spinach curly top virus (SCTV)
Spinach severe curly top: Genus Curtovirus; Spinach severe curly top virus (SSCTV)
Spotted wilt: Genus Tospovirus; Tomato spotted wilt virus (TSWV)
Tobacco mosaic: Genus Tobamovirus; Tobacco mosaic virus (TMV)
Tobacco rattle: Genus Tobravirus; Tobacco rattle virus (TRV)
Turnip mosaic: Genus Potyvirus; Turnip mosaic virus (TuMV)