Diseases of Cannabis Sativa L.

BACTERIAL DISEASES

Bacterial blight

Pseudomonas syringae pv. cannabina(Sutic & Dowson) Young et al.

Crown gall

Agrobacterium tumefaciens (Smith & Townsend)Conn

Striatura ulcerosa

Pseudomonas syringae pv. mori(Boyer & Lambert) Young et al.

Xanthomonas leaf spot

Xanthomonas campestris pv.cannabis Severin

FUNGAL DISEASES

Anthracnose

Colletotrichum coccodes (Wallroth) Hughes

= C. atramentarium (Berk.& Broome) Tauberhaus

C. dematium (Pers.:Fr.) Grove

Black dot disease

Epicoccum nigrum Link

= Epicoccum purpurascens Ehrenb.

Black mildew

Schiffnerula cannabis McPartland & Hughes

Brown blight

Alternaria alternata (Fr.:Fr.) Keissl.

= A. tenuis Nees

Brown leaf spot and stem canker

Ascochyta spp.

A. prasadii Shukia & Pathak

Phoma spp.

(teleomorph: Didymella spp.)

P. exigua Desmaz.

P. glomerata (Corda) Wollenweb. & Hochapfel

P. herbarum Westendorp

Charcoal rot

Macrophomina phaseolina (Tassi) Goidanich

Cladosporium stem canker

Cladosporium cladosporioides(Fresen.) De Vries.

C. herbarum (Pers.:Fr.) Link

(teleomorph: Mycosphaerella tassiana (De Not.) Johan.)

Curvularia leaf spot

Curvularia cymbopogonis(C.W. Dodge) Groves & Skolko

C. lunata (Wakker) Boedijn

(teleomorph: Cochliobolus lunatus Nelson & Haasis)

Cylindrosporium blight

Cylindrosporium spp.

C. cannabinum Ibrahimov

Damping-off

Botrytiscinerea Pers.:Fr.

(teleomorph: Botryotinia fuckeliana (de Bary) Whetzel)

Fusarium oxysporum Schlechtend.:Fr.

F. solani (Mart.) Sacc.

(teleomorph: Nectria haematococca Berk. & Broome)

Macrophomina phaseolina (Tassi) Goidanich

Pythium aphanidermatum (Edson) Fitzp.

P. debaryanum auct. non Hesse

P. ultimum Trow

Rhizoctonia solani Kühn

(teleomorph: Thanatophorus cucumeris (A.B. Frank) Donk

= Pellicularia filamentosa (Pat>) D.P. Rogers)

Downy mildew

Pseudoperonospora cannabina (Otth) Curzi

P. humuli (Miyabe & Takah.) G.W. Wils.

Fusarium foot rot and root rot

Fusarium solani (Mart.) Sacc.

Fusarium stem canker

Fusarium sulphureum Schlechtend.

(teleomorph: Gibberella cyanogena (Desmaz.) Sacc.

= G. saubinett (Mont.) Sacc.)

Fusarium wilt

Fusarium oxysporum Schlechtend.:Fr. f. sp. cannabis Noviello& W.C. Snyder

F. oxysporum Schlechtend.Fr. f. sp. vasinfectum (Atk.) W. C. Snyder & H.N.Hans.

Gray mold

Botrytis cinereaPers.:Fr.

Hemp canker

Sclerotinia sclerotiorum (Lib.) de Bary

Leptosphaeria blight

Leptosphaeria cannabina Ferraris &Massa

L. woroninii Docea & Negru

L. acuta (Fuckel) P. Karst.

Olive leaf spot

Cercospora cannabis K. Hara & Fukui

Pseudocercospora cannabina (Wakef.) Deighton

Ophiobolus stem canker

Ophiobolus cannabinus Pass.

O. anguillidus (Cooke in Cooke & Ellis) Sacc.

Phoma stem canker

Phoma herbarum Westendorp.

P. exigua Desmaz

Phomopsis stem canker

Phomopsiscannabina Curzi

P. achilleae (Sacc.) Hohn.

(teleomorph: Diaporthe arctii (Lasch) Nitschke var. achilleae (Auersw.) Wehmeyer)

Phymatotrichum root rot (Cotton root rot)

Phymatotrichopsis omnivora (Duggar) Hennebert

= Phymatotrichum omnivorum Duggar

Pink rot

Trichothecium roseum (Pers.:Fr.) Link

= Cephalothecium roseum Corda)

Powdery mildew

Leveillula taurica (Lév.) Arnaud.

(anamorph: Oidiopsis taurica Salmon)

Sphaerotheca macularis (Wallroth:Fr.) Lind

= S. humuli (DC.) Burrill

(anamorph: Oidium sp.)

Red boot

Melanosporacannabis Behrens (secondary on hemp canker)

Rhizoctonia soreshin and root rot

Rhizoctonia solaniKühn

Rust

Aecidium cannabis Szembel

Uredo kriegeriana Syd. & P. Syd.

Uromyces inconspicuus Otth

Southern blight (Sclerotium root and stem rot)

Sclerotium rolfsii Sacc.

Stemphylium leaf and stem spot

Stemphylium botryosumWallroth

(teleomorph: Pleospora tarda E. Simmons)

S. cannabinum (Bachtin & Gutner) Dobrozrakova et al.

Tar spot

Phyllachora cannabidis P. Henn.)

Tropical rot

Lasiodiplodia theobromae (Pat.) Griffon &Maubl.

= Botryodiplodia theobromae Pat.

Twig blight

Dendrophoma marconii Cav.

(teleomorph: Botryosphaeria marconii V. Charles & Jenkins)

Verticillium wilt

Verticillium albo-atrumReinke & Berthier

V. dahliae Kleb.

White leaf spot

Phomopsisganjae McPartland

Yellow leaf spot

Septoria cannabis (Lasch) Sacc.

S. cannabina Peck

MISCELLANEOUS DISEASES OR DISORDERS

Fasciation

Cause undetermined

Grey fleck

Magnesium deficiency

Tipburn & leaf margin necrosis

Potassium deficiency

NEMATODES, PARASITIC

Cyst

Heterodera humuli Filipjev

H. schachtii Schmidt

Needle

Paralongidorusmaximus (Butschli) Siddiqi

= Longidorus maximus (Butschli) Th. & Swang.

Root-knot

Meloidogyne incognita (Kofoid &White) Chitwood

M. javanica (Treub) Chitwood

Stem

Ditylenchusdipsaci (Kühn) Filipjev

PARASITIC HIGHER PLANTS

Broomrape

Orobanche ramosa L.

Dodder

Cuscuta europaea L.

C. pentagona Eng.

VIRUS DISEASES

Alfalfa mosaic

Alfalfa mosaic virus

Arabis mosaic

Arabis mosaic virus

Cucumber mosaic

Cucumber mosaic virus

Hemp mosaic

Hemp mosaic virus

Hemp streak

Hemp streak virus

Lucerne mosaic

Lucerne mosaic virus

Witches' broom

MLO