List of cassava diseases

This article is a list of diseases of cassava (Manihot esculenta).

Bacterial and Phytoplasma diseases

Bacterial and mycoplasma-like diseases
Antholysis	Phytoplasma (Candidatus Phytoplasma spp.)
Witches' broom	Phytoplasma (Candidatus Phytoplasma spp.)
Bacterial blight	Xanthomonas axonopodis pv. manihotis
Bacterial angular leaf spot	Xanthomonas campestris pv. cassavae
Bacterial stem gall	Agrobacterium tumefaciens Biovar 1
Bacterial stem rot	Erwinia carotovora subsp. carotovora
Bacterial wilt	Erwinia herbicola (syn. Pantoea agglomerans)

Fungal diseases
Anthracnose	Colletotrichum gloeosporioides = Colletotrichum gloeosporoides f.sp. manihotis Glomerella cingulata [teleomorph] Colletotrichum graminicola Glomerella graminicola [teleomorph]
Armillaria root rot (shoestring root rot)	Armillaria mellea Rhizomorpha subcorticalis [anaomorph]
Black root and stem rot	Scytalidium spp. Hendersonula toruloidea [syanamorph]
Blight leaf spot	Cercospora vicosae
Brown leaf spot	Cercosporidium henningsii Mycosphaerella henningsii [teleomorph]
Cassava ash	Oidium manihotis
Concentric ring leaf spot	Phyllosticta manihotae P. manihoticola
Dematophora root rot (Rosellinia root rot)	Dematophora necatrix Rosellinia necatrix [teleomorph]
Diplodia root and stem rot	Diplodia manihoti
Fusarium root rot	Fusarium oxysporum F. solani Nectria haematococca [teleomorph]
Rigidopurus root rot	Rigidoporus microporus = Rigidoporus lignosus
Rust	Uromyces spp.
Sclerotium root rot (southern blight)	Sclerotium rolfsii Athelia rolfsii [teleomorph]
Superelongation	Sphaceloma manihoticola Elsinoë brasiliensis [teleomorph]
Verticillium root and stem rot	Verticillium dahliae
White leaf spot	Phaeoramularia manihotis

Oomycete diseases
Phytophthora root rot	P. cryptogea P. drechsleri P. erythroseptica P. nicotianae var. parasitica
Pythium root rot	Pythium spp.

Miscellaneous diseases and disorders
Post-harvest root rot	Physiologic and pathogenic deteriorations
Root smallpox disease	Microbial rotting after feeding by Cyrtomenus bergi

Viruses are a severe problem in the tropics. Viruses were the primary reason for the lack of cassava yield increases from the late 1990s to 2019.^[1]

Viral diseases
African cassava mosaic	African cassava mosaic virus (ACMV)
Cassava brown streak disease	Cassava brown streak virus^[2] (CBSV)
Cassava common mosaic	Cassava common mosaic virus (CsCMV)
Cassava frogskin	Cassava Frogskin-Associated Virus ^[3] (CsFSaV)
Cassava green mottle	Cassava green mottle virus^[4] (CGMV)
Cassava symptomless infections	Cassava American latent virus (CsAlV) Cassava Ivorian bacilliform virus^[5] (CIBV)
Cassava vein mosaic	Cassava vein mosaic virus (CsVMV)
Indian cassava mosaic	Indian cassava mosaic virus (ICMV)

^ Afedraru, Lominda (2019-01-31). "Uganda to launch innovative gene-edited cassava research". Alliance for Science. Retrieved 18 March 2025.
^ McGrath, Matt (2011-11-17). "UN warns of staple crop virus 'epidemic'". BBC News. Retrieved Jun 29, 2019.
^ Di Feo, L.; Zanini, A.; Rodríguez Pardina, P.; Cuervo, M.; Carvajal-Yepes, M.; Cuellar, W. J. (2015). "First Report of Cassava common mosaic virus and Cassava frogskin-associated virus Infecting Cassava in Argentina". Plant Disease. 99 (5). American Phytopathological Society (APS): 733. doi:10.1094/PDIS-10-14-1088-PDN. hdl:10568/66634.
^ "Cassava green mottle". Retrieved Jun 29, 2019.
^ Scott SW, MacFarlane SA, McGavin WJ, Fargette D (May 17, 2014). "Cassava Ivorian bacilliform virus is a member of the genus Anulavirus". Arch. Virol. 159 (10): 2791–3. doi:10.1007/s00705-014-2086-3. PMID 24838850. S2CID 254061653.