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Diseases of Celery
(Apium graveolens L. var. dulce (Miller) Pers.)

Steven T. Koike, collator (last update 12/17/15)

BACTERIAL DISEASES

Bacterial blight (Brown stem)

Pseudomonas cichorii (Swingle) Stapp

Bacterial leaf spot

Pseudomonas syringae pv. apii (Jagger) Young et al.

Bacterial soft rot

Pectobacterium carotovorum subsp. carotovorum (Jones) Hauben et al. emend.
Gardan et al.
          (syn.: Erwinia carotovora subsp. carotovora (Jones) Bergey et al.)

FUNGAL DISEASES

Alternaria leaf spot (Black rot)

Alternaria radicina Meier, Drechsler, & E. D. Eddy

Anthracnose (Leaf curl)

Colletotrichum acutatum sensu lato J. H. Simmonds

C. nymphaeae (Pass.) Aa

C. orbiculare (Berk. & Mont.) Arx

C. simmondsii R. G. Shivas & Y. P. Tan

Brown spot

Acremonium apii (M. A. Smith & Ramsey) W. Gams
          (syn.: Cephalosporium apii M. A. Smith & Ramsey)

Crater spot (Crater rot) and damping-off

Rhizoctonia solani J. G. Kühn
          (syn.: Thanatephorus cucumeris (A. B. Frank) Donk)

Downy mildew

Plasmopara umbelliferarum (Casp.) J. Schröt. ex Wartenw.

Early blight

Cercospora apii Fresen.

Fusarium yellows (Fusarium wilt)

Fusarium oxysporum Schltdl.:Fr. f. sp. apii (R. R. Nelson & Sherb.) W. C. Snyder & H. H. Hansen

Gray mold

Botrytis cinerea Pers.:Fr.
          (syn.: Botryotinia fuckeliana (de Bary) Whetzel)

Late blight

Septoria apiicola Speg.

Licorice rot

Mycocentrospora acerina (R. Hartig) Deighton
          (syn.: Centrospora acerina (R. Hartig) A. G. Newhall)

Phoma crown and root rot

Phoma apiicola Kleb.
          (syn.: Subplenodomus apiicola (Kleb.) Gruyter, Aveskamp, & Verkley

Pink rot (White mold, Cottony rot)

Sclerotinia sclerotiorum (Lib.) de Bary

Powdery mildew

Erysiphe heraclei DC.

Pythium damping-off and root rot

Pythium debaryanum R. Hesse
          (syn.: Globisporangium debaryanum (R. Hesse) Uzuhashi, Tojo, & Kakish)

P. dissotocum Drechsler

P. irregulare Buisman
          (syn.: G. irregulare (Buisman) Uzuhashi, Tojo, & Kakish.)

P. mastophorum Drechsler
          (syn.: G. mastophorum (Drechsler) Uzuhashi, Tojo, & Kakish.)

P. ultimum Trow
          (syn.: G. ultimum (Trow) Uzuhashi, Tojo, & Kakish.)

Red root

Fusarium solani (Mart.) Sacc.
          (syn.: Nectria haematococca Berk. & Broome)

Sclerotinia foot rot (Sclerotinia petiole and crown rot)

Sclerotinia minor Jagger

Stemphylium leaf spot

Stemphylium ramulosa Sacc.
          (syn.: Alternaria smyrnii (P. Crouan) E. G. Simmons)

NEMATODES (PARASITIC)

Awl nematodes:

Dolichodorus spp.

D. heterocephalus Cobb

Cyst nematode:

Heterodera spp.

Dagger nematode:

Xiphinema spp.

Lesion nematode:

Pratylenchus spp.

Pin nematodes:

Paratylenchus spp.

P. hamatus Thorne & Allen

Root-knot nematode:

Meloidogyne spp.

Sting nematode:

Belonolaimus spp.

Stubby-root nematode:

Paratrichodorus spp.

NONINFECTIOUS DISEASES, DISORDERS, AND DAMAGE

Blackheart

Calcium deficiency

Cracked stem (Laddering, Pencil stripe)

Boron deficiency

PHYTOPLASMAL DISEASE

Aster yellows

Aster yellows phytoplasma

VIRAL DISEASES

Apium virus Y

Genus Potyvirus; Apium virus Y (ApVY)

Calico

Genus Alfamovirus; Alfalfa mosaic virus (AMV)

Celery mosaic (Celery ring spot)

Genus Potyvirus; Celery mosaic virus (CeMV)

Cucumber mosaic

Genus Cucumovirus; Cucumber mosaic virus (CMV)

Spotted wilt

Genus Tospovirus; Tomato spotted wilt virus (TSWV)