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Diseases of Cranberry
(Vaccinium macrocarpon Ait. = Oxycoccus
macrocarpus
(Ait.) Pers.)

Steven N. Jeffers and Donald M. Boone, primary collators


FUNGAL DISEASES

Bitter rot
Glomerella cingulata (Stoneman) Spauld. & H. Schrenk
= G. cingulata (Stoneman) Spauld. & H. Schrenk var. vaccinii Shear
    Colletotrichum gloeosporioides (Penz.) Penz. & Sacc. in Penz. [anamorph]
Black rot
Allantophomopsis cytisporea (Fr.:Fr.) Petr.
= Apostrasseria lunata (Shear) Nag Raj
= Ceuthospora lunata Shear
    Phacidium lunatum DiCosmo et al. [teleomorph]
Allantophomopsis lycopodina (Hohn.) Carris
Strasseria geniculata (Berk. & Broome) Hohn.
= S. oxycocci (Shear) Shear
Black spot
Mycosphaerella nigromaculans Shear
    Ramularia nigromaculans Shear [anamorph]
Blotch rot
Physalospora vaccinii (Shear) Arx & E. Müller
= Acanthorhynchus vaccinii Shear
Botryosphaeria fruit rot and berry speckle
Botryosphaeria vaccinii (Shear) Barr
= Guignardia vaccinii Shear
    Phyllosticta elongata G. J. Weidemann in G. J. Weidemann et al. [anamorph]
Cladosporium leaf spot
Cladosporium oxycocci Shear
Cottonball (hard rot and tip blight)
Monilinia oxycocci (Woronin) Honey
= Sclerotinia oxycocci Woronin
Early rot (scald)
Phyllosticta vaccinii Earle
End rot
Godronia cassandrae Peck
= G. cassandrae Peck f. vaccinii Groves
    Fusicoccum putrefaciens Shear [anamorph]
Fairy ring
Psilocybe agrariella Atk. var. vaccinii V. Charles
Fruit rots (miscellaneous)
Gloeosporium minus Shear
Penicillium spp.
Pestalotia vaccinii (Shear) Guba
= Pestalotia (= Pestalozzia) guepini Desmaz. var. vaccinii Shear
Synchronoblastia crypta Uecker & Caruso
Leaf spots and leaf drops (miscellaneous)
Botryosphaeria vaccinii (Shear) Barr
Eupropolella oxycocci (Dearn. ex Cash) B. Eriksson
= Naevia oxycocci Dearn. ex Cash in Shear et al.
Godronia cassandrae Peck
Pestalotia vaccinii (Shear) Guba
Pyrenobotrys compacta (Peck) B. Eriksson
= Gibbera compacta (Peck) Shear
= Venturia compacta Peck
Phytophthora root and runner rots
Phytophthora spp.
P. cinnamomi Rands
Powdery mildew
Microsphaera vaccinii (Schwein.) Cooke & Peck
= M. penicillata (Wallr.:Fr.) Lév. var. vaccinii (Schwein.) W. B. Cooke
Protoventuria (Gibbera) leaf spot and berry speckle
Protoventuria myrtilli (Cooke) Barr
= Gibbera myrtilli (Cooke) Petr.
Red gall (cranberry gall)
Synchytrium vaccinii F. Thomas
Red leaf spot
Exobasidium rostrupii Nannf.
= E. vaccinii (Fuckel) Woronin
Red shoot
Exobasidium perenne N. Nickerson
Ripe rot (white rot)
Coleophoma empetri (Rostr.) Petr.
= Sporonema oxycocci Shear
Rose bloom
Exobasidium oxycocci Rostr. ex Shear
Rust
Pucciniastrum vaccinii (G. Wint.) Jorst.
= P. myrtilli (Schumach.) Arth.
Twig blight
Lophodermium hypophyllum (Dearn. & House) Shear in Shear et al.
= L. ocycocci (Fr.) P. Karst. var. hypophyllum Dearn. & House
L. oxycocci (Fr.) P. Karst.
Upright dieback
Phomopsis vaccinii Shear in Shear et al.
    Diaporthe vaccinii Shear in Shear et al. [teleomorph]
Synchronoblastia crypta Uecker & Caruso
Viscid rot
Phomopsis vaccinii Shear in Shear et al.
Yellow rot
Botrytis sp.

NEMATODES, PARASITIC

Lesion
Pratylenchus spp.
Ring
Criconemoides spp.
Sheath
Hemicycliophora spp.
Spiral
Helicotylenchus spp.
Stubby-root
Trichodorus spp.
Stunt
Tylenchorhynchus spp.

PHYTOPLASMAL DISEASES

False blossom (Wisconsin false blossom)

VIRAL DISEASES

Ringspot
(Virus suspected)

DISEASES CAUSED BY PARASITIC SEED PLANTS

Dodder
Cuscuta compacta Juss.
C. gronovii Willd.

PHYSIOLOGICAL DISORDERS

Flooding injury
Oxygen deficiency
Purple berry
Physiological
Sterile breakdown (physiological breakdown, physiological rot)
Physiological (triggered by bruising or some other injury)
Sun scald (sunburn)
Overheating of fruit from direct exposure to sun