List of hemp diseases

This is a list of diseases of hemp ( Cannabis sativa ) .

Bacterial diseases

Bacterial diseases
Bacterial blight Pseudomonas cannabina
Crown gall Agrobacterium tumefaciens
Striatura ulcerosa Pseudomonas amygdali pv. mori
Xanthomonas leaf spot Xanthomonas campestris pv. cannabis

Fungal diseases

Fungal diseases
anthracnose Colletotrichum coccodes
= Colletotrichum atramentarium
= Colletotrichum dematium
Black dot disease Epicoccum nigrum
= Epicoccum purpurascens
Black mildew Schiffnerula cannabis
Brown blight Alternaria alternata
= Alternaria tenuis
Brown leaf spot Ascochyta spp.
Ascochyta prasadii 
Phoma spp.
Didymella spp. [teleomorph]
Phoma fasua
Phoma glomerata 
Phoma herbarum
Charcoal rot Macrophomina phaseolina
Cladosporium stem canker Cladosporium cladosporioides 
Cladosporium herbarum 
Mycosphaerella tassiana [teleomorph]
Curvularia leaf spot Curvularia cymbopogonis 
Curvularia lunata 
Cochliobolus lunatus [teleomorph]
Cylindrosporium blight Cylindrosporium spp.
Cylindrosporium cannabinum
Damping-off Botrytis cinerea Botrytinia
fuckeliana [teleomorph]
Fusarium oxysporum 
Fusarium solani 
Nectria haematococca [teleomorph]
Macrophomina phaseolina 
Pythium aphanidermatum 
Pythium debaryanum 
Pythium ultimum 
Rhizoctonia solan
Thanatephorus cucumeris [teleomorph]
= Pellicularia filamentosa
Downy mildew Pseudoperonospora cannabina 
Pseudoperonospora humuli
Fusarium foot rot and root rot Fusarium solani
Fusarium stem canker Fusarium sulphureum 
Gibberella cyanogena [teleomorph]
= Gibberella saubinetii
Fusarium wilt Fusarium oxysporum f.sp. cannabis 
Fusarium oxysporum f.sp. vasinfectum
Gray mold Botrytis cinerea
Hemp canker Sclerotinia sclerotiorum
Leptosphaeria blight Leptosphaeria cannabina 
Leptosphaeria woroninii 
Leptosphaeria acuta
Olive leaf spot Cercospora cannabis 
Pseudocercospora cannabina
Ophiobolus stem canker Ophiobolus cannabinus 
Ophiobolus anguillides
Phoma stem canker Phoma herbal 
Phoma exigua
Phomopsis stem canker Phomopsis cannabina 
Phomopsis achilleae 
Diaporthe arctii var. achilleae [teleomorph]
Phymatotrichum root rot
Cotton root rot		 Phymatotrichopsis omnivora
= Phymatotrichum omnivorum
Pink rot Trichothecium roseum
= Cephalothecium roseum
Powdery mildew Leveillula taurica 
Oidiopsis taurica [anamorph]
Sphaerotheca macularis
= Sphaerotheca humuli 
Oidium sp. [anamorph]
Red boot Cannabis Melanospora (secondary on hemp canker)
Rhizoctonia soreshin and root rot Rhizoctonia solani
Rust Aecidium Cannabis 
Uredo kriegeriana 
Uromyces inconspicuus
Southern blight
Sclerotium root and stem rot		 Sclerotium rolfsii 
Athelia rolfsii [teleomorph]
Stemphylium leaf and stem spot Stemphylium botryosum 
Pleospora tarda [teleomorph]
Stemphylium cannabinum
Tar spot Phyllachora cannabis
Tropical rot Lasiodiplodia theobromae
= Botryodiplodia theobromae
Twig blight Dendrophoma marconii 
Botryosphaeria marconii [teleomorph]
Verticillium wilt Verticillium albo-atrum 
Verticillium dahliae
White leaf spot Phomopsis ganjae
Yellow leaf spot Septoria cannabis 
Septoria cannabina

Nematodes, parasitic

Nematodes, parasitic
cyst Heterodera humuli 
Heterodera schachtii
Needle Paralongidorus maximus
= Longidorus maximus
Root-knot Meloidogyne incognita 
Meloidogyne javanica
Stem Ditylenchus dipsaci

Viral diseases

Viral diseases
Alfalfa mosaic & Lucerne mosaic Alfamovirus genus , Alfalfa mosaic virus (AMV)
Arabis mosaic Nepovirus genus , Arabis mosaic virus (ArMV)
Cucumber mosaic genus Cucumovirus , Cucumber mosaic virus (CMV)
Hemp mosaic Tobamovirus genus , Sunn-hemp mosaic virus
Hemp streak genus?, Hemp streak virus Transmitted by thrips, most likely a Tospovirus

Phytoplasmal diseases

Phytoplasmal diseases
Witches’ broom

Miscellaneous diseases and disorders

Miscellaneous diseases and disorders
fasciation Cause undetermined
Gray fleck Magnesium deficiency
Tipburn & leaf margin necrosis Potassium deficiency

References

  • Common Names of Diseases, American Phytopathological Society