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Diseases of Hop (Humulus lupulus L.)

Sarah Pethybridge and Walt Mahaffee, primary collators (last update 4/5/07)


BACTERIAL DISEASES

Bacterial blight
Pseudomonas cannabina (ex Sutic & Dowson) Gardan, Shafik, Belouin, Brosch, Grimont & Grimont
Bacterial disease
Corynebacterium sp.
Crown gall
Agrobacterium tumefaciens (Smith & Townsend) Conn
Xanthomonas leaf spot
Xanthomonas campestris pv. cannabis Severin

FUNGAL DISEASES

Alternaria blight
Alternaria humuli Simmons
Alternaria cone disorder
Alternaria alternata (Fr.:Fr.) Keissl. = Alternaria tenuis Nees
Anthracnose
Glomerella cingulata (Stoneman) Spauld. & H. Schrenk
Colletotrichum sp.
Armillaria root rot (shoestring root rot)
Armillaria mellea (Vahl:Fr.) P. Kumm.
Rhizomorpha subcorticalis Pers. ex. Gray [anamorph]
Ascochyta leaf spot
Ascochyta humuli Lasch Kabát & Bubák
    = A. humuliphila Melnik
    = Phloeospora humuli Westend.
Black root rot
Phytophthora citricola Sawada
    = P. cactorum (Lebert & Cohn) J. Schröt. var. applanata F. Chester
Canker
Fusarium sambucinum Fuckel
    Gibberella pulicaris (Fr.:Fr.) Sacc.) [teleomorph]
Fusarium roseum Link:Fr.
Fusarium oxysporum Schltdl.:Fr.
Cercospora leaf spot
Cercospora cantuariensis Salmon & Wormald
    = Mycocentrospora cantuariensis (Salmon & Wormald) Deighton
Cone disorder
Ceriospora dubyi Niessl.
Cone early maturity
Podosphaera macularis (Wallr.:Fr.) U. Braun & S. Takamatsu
    = Sphaerotheca macularis (Wallr.:Fr.) Lind
    = Sphaerotheca humuli (DC.) Burrill
Cone tip blight
Fusarium sambucinum Fuckel
    Gibberella pulicaris (Fr.:Fr.) Sacc. [teleomorph]
Fusarium avenaceum (Fr.:Fr.) Sacc.
Fusarium crookwellense L.W. Burgess et al.
Cylindrosporium leaf spot
Cylindrosporium humuli Ellis & Everh.
Downy mildew
Pseudoperonospora humuli (Miyabe & Takah.) G.W. Wils.
    = Peronoplasmopara humuli Miyabe & Takah.
Gray mold
Botrytis cinerea Pers.:Fr.
    Botryotinia fuckeliana (de Bary) Whetzel [teleomorph]
Mycosphaerella leaf spot and cone disorder
Mycosphaerella erysiphina (Berk & Broome) Kirchn.
    = Sphaeria erysiphina Berk. & Broome
    = Sphaerella erysiphina Berk. & Broome
Phoma wilt
Phoma herbarum Westend.
Phoma herbarum f. humuli
Phoma exigua Desm. var. exigua
    Diaporthe perexigua
Sacc. [teleomorph]
Phoma aliena (Fr.) Aa & Boerema
Phyllosticta cone disorder
Phyllosticta bractearum Sacc. & Speg.
Phyllosticta leaf spot
Phyllosticta deckdua Ellis & Kellerm.
Phyllosticta humuli var. major Ellis & Everh.
Phyllosticta humuli Sacc. & Speg.
Phyllosticta lupulina Bubák & Kabát
Powdery mildew
Podosphaera macularis (Wallr.:Fr.) U. Braun & S. Takamatsu
    = Sphaerotheca macularis (Wallr.:Fr.) Lind
    = Sphaerotheca humuli (DC.) Burrill
Red crown rot
Phacidiopycnis sp.
Rosellinia root rot (Dematophora root rot)
Rosellinia necatrix Prill.
    Dematophora necatrix R. Hartig [anamorph]
Sclerotinia wilt
Sclerotinia sclerotiorum (Lib.) de Bary
    = Whetzelinia sclerotiorum (Lib.) Korf. & Dumont
Septoria leaf spot
Septoria humuli Westend.
Septoria lupulina Ellis & Kellerm.
Septoria humulina Bondartsev
Septoria divergens Bubák & Kabát
Synchytrium leaf spot
Synchytrium aureum J. Schröt
Verticillium wilt
Verticillium albo-atrum Reinke & Berthier
Verticillium dahliae Kleb.

NEMATODES, PARASITIC

Cyst nematode
Heterodera humuli Filipjev
Dagger nematode
Xiphinema diversicaudatum (Micoletzky) Thorne
Root-knot nematode
Meloidogyne incognita Chitwood
Stem and bulb nematode
Ditylenchus destructor Thorne
Ditylenchus sp.
Stunt nematode
Tylenchorhynchus dubius Thorne

VIRAL AND VIROID DISEASES

American hop latent
American hop latent virus (AHLV)
Apple fruit crinkle viroid
Apple fruit crinkle viroid (AFCVd)
Bare bine
Arabis mosaic virus (ArMV)
Hop chlorotic disease
Arabis mosaic virus (ArMV)
Hop latent
Hop latent virus (HpLV)
Hop latent viroid
Hop latent viroid (HLVd)
Hop mosaic
Hop mosaic virus (HpMV)
Hop stunt viroid
Hop stunt viroid (HSVd)
Humulus japonicus
Humulus japonicus latent virus (HJLV)
Nettlehead
Arabis mosaic virus + satellite nucleic acid (ArMV)
Ringspot
Apple mosaic virus
    =
Prunus necrotic ringspot virus (PNRSV)
Spidery hop
Arabis mosaic virus (ArMV)
Split leaf blotch
Arabis mosaic virus (ArMV)

MISCELLANEOUS DISEASES AND DISORDERS

Abiotic wilt
Residues of heptachlor and chlordane
Hop-drop
Macrosporium spp.
Sooty mold
Cladosporium fumago f. humuli-lupuli
Fumago vagans
Cladosporium herbarum
Cladosporum sp. (not pathogenic)
Stunt
Unknown
 
Tobacco necrosis virus (TNV)
Petunia asteroid mosaic virus
    = Tomato bushy stunt virus - petunia strain (PeAMV)
Alfalfa mosaic virus (AlMV)
Strawberry latent ringspotvirus (SLRSV)
Unknown virus (H-246)
Cucumber mosaic virus (CMV)
Tobacco mosaic virus (TMV)