Diseases of Beet
(Beta vulgaris L.)

Earl G. Ruppel, primary collator (last update 4/8/03)

BACTERIAL DISEASES

Bacterial blight

Pseudomonas syringae pv. aptata (Brown & Jamieson) Young et al.

Bacterial pocket

Xanthomonas beticola (Smith et al.) Savulescu

Bacterial soft rot

Erwinia carotovora subsp. carotovora (Jones) Bergey et al.

Bacterial vascular necrosis and rot

Erwinia carotovora subsp. betavasculorum Thomson et al.

Crown gall

Agrobacterium tumefaciens (Smith & Townsend) Conn

Silvering disease*

Curtobacterium flaccumfaciens pv. betae (Hedges)

    Collins and Jones

= Corynebacterium betae Keyworth et al.

FUNGAL DISEASES

Alternaria leaf spot

Alternaria alternata (Fr.:Fr.) Keissl.

A. brassicae (Berk.) Sacc.

Anthracnose*

Colletotrichum dematium (Pers.) Grove f. spinaciae (Ellis & Halst.) Arx

Aphanomyces root rot (black root)

Aphanomyces cochlioides Drechs.

Black wood vessel*

Pythium irregulare Buisman

Cercospora leaf spot

Cercospora beticola Sacc.

Charcoal rot

Macrophomina phaseolina (Tassi) Goidanich

Choanephora rot*

Choanephora cucurbitatum (Berk. & Ravenel) Thaxt.

Damping-off, black leg, black root and seedling blight

Aphanomyces cochlioides Drechs.

Cylindrocladium sp.*

Fusarium spp.

Phoma betae A. B. Frank

    Pleospora betae (Berl.) Nevodovsky [teleomorph]

Pythium spp.

Rhizoctonia solani Kühn

    Thanatephorus cucumeris (A. B. Frank) Donk

    [teleomorph]

Downy mildew

Peronospora farinosa (Fr.:Fr.) Fr.

= P. farinosa (Fr.:Fr) Fr. f. sp. betae Byford

= P. schachtii Fuckel

Fusarium yellows

Fusarium oxysporum Schlechtend.:Fr. f. sp. spinaciae (Sherb.) W. C. Snyder & H. N. Hans.

Fusarium yellows and root rot

Fusarium oxysporum Schlechtend.:Fr. f. sp. betae (D. Stewart) W. C. Snyder & H. N. Hans. (Texas isolates)

Leaf gall (beet tumor, or crown wart)

Physoderma leproides (Trab.) Karling

= Urophlyctis leproides (Trab.) Magnus

Phoma leaf spot and root rot

Phoma betae A. B. Frank

Phymatotrichum root rot (cotton root rot)

Phymatotrichopsis omnivora (Duggar) Hennebert

= Phymatotrichum omnivorum Duggar

Phytophthora wet rot

Phytophthora drechsleri Tucker

Powdery mildew

Erysiphe polygoni DC.

= E. betae Weltzien

Pythium root rot

Pythium aphanidermatum (Edson) Fitzp.

P. deliense Meurs

Ramularia leaf spot

Ramulariabeticola Fautrey & Lambotte

Rhizoctonia foliar blight, crown and root rot

Rhizoctonia solani Kühn

Rhizopus root rot

Rhizopus arrhizus A. Fischer

R. stolonifer (Ehrenb.:Fr.) Vuill.

Rust

Uromycesbetae J. Kickx fil.

Sclerotinia crown & root rot

Sclerotinia sclerotiorum (Lib.) de Bary

Seedling rust

Puccinia subnitens Dietel

Slime molds*

Physarum cinereum (Batsch) Pers.

Southern blight (Sclerotium root rot and stem rot)

Sclerotium rolfsii Sacc.

    Athelia rolfsii (Curzi) Tu & Kimbrough [teleomorph]

Stemphylium leaf spot*

Stemphylium botryosum Wallr.

    Pleospora tarda E. Simmons [teleomorph]

Storage rots

Botrytis cinerea Pers.: Fr.

    Botryotinia fuckeliana (de Bary) Whetzel [teleomorph]

Penicillium spp.

Phoma betae A. B. Frank

Verticillium wilt

Verticillium albo-atrum Reinke & Berthier

Violet root rot

Helicobasidium brebissonii (Desmaz.) Donk

    Rhizoctonia crocorum (Pers.:Fr.) DC. [anamorph]

NEMATODE DISEASES

Beet cyst nematode

Heterodera schachtii Schmidt

Clover cyst nematode

Heterodera trifolii Goffart

False root-knot nematode

Nacobbus aberrans (Thorne & Schuster) Sher

Lesion nematodes

Pratylenchus spp.

Needle nematodes

Longidorus spp.

Potato rot nematode

Ditylenchus destructor Thorne

Root-knot

Meloidogyne spp.

Stem and bulb nematode

Ditylenchus dipsaci (Kühn) Filipjev

Stubby-root nematodes

Paratrichodorus spp.

Trichodorus spp.

VIRAL DISEASES

Alfalfa mosaic

genus Alfamovirus, Alfalfa mosaic virus (AMV)

Beet curly top

genus Hybrigeminivirus, Beet curly top virus (BCTV)

Beet distortion mosaic

genus ?, Beet distortion mosaic virus

Beet leaf curl*

genus Rhabdovirus, Beet leaf curl virus (BCLV)

Beet mild yellows & Beet western yellows

genus Luteovirus, Beet western yellows virus (BMY)

Beet mosaic

genus Potyvirus, Beet mosaic virus (BtMV)

Beet yellow net

genus Luteovirus, Beet yellow net virus (BYNV)

Beet yellows

genus Closterovirus, Beet yellows virus (BYV)

Cucumber mosaic

genus Cucumovirus, Cucumber mosaic virus (CMV)

Lettuce infectious yellows

genus Closterovirus, Lettuce infectious yellows virus (LIYV)

Rhizomania

genus Furovirus, Beet necrotic yellow vein virus

    (BNYVV)

(fungal vector: Polymyxa betae Keskin)

Beet savoy

Suspected virus

Beet yellow vein

Suspected virus

PHYTOPLASMAL and SPIROPLASMAL DISEASES

Beet latent rosette

Phytoplasma

Yellow wilt*

Spiroplasma

MISCELLANEOUS DISEASES OR DISORDERS

Heart rot

Boron deficiency

Scab

Streptomyces spp.

*Not known to occur naturally in the United States of America.