Diseases of Cassava
(Manihot esculenta Crantz)

J. C. Lozano and B. Nolt, primary collators (last update 3/6/93)

BACTERIAL DISEASES

Bacterial blight

Xanthomonas campestris pv. manihotis (Berthet and Bondar) Dye

Bacterial angular leaf spot

Xanthomonas campestris pv. cassavae (Wiehe and Dowson) Maraite and Weyns

Bacterial stem gall

Agrobacterium tumefaciens (Smith and Townsend) Conn Biovar 1

Bacterial stem rot

Erwinia carotovora subsp. carotovora (Jones) Bergey et al.

Bacterial wilt

Erwinia herbicola (Lohnis) Dye

FUNGAL DISEASES

Anthracnose

Colletotrichum gloeosporioides (Penz.) Penz. & Sacc. in
    Penz. = C. gloeosporoides f. sp. manihotis

(teleomorph: Glomerella cingulata (Stoneman) Spauld.
    & Schrenk)

C. graminicola (Ces.) G.W. Wilson

Armillaria root rot (shoestring root rot)

Armillaria mellea (Vahl:Fr.) P. Kumm.

(anamorph: Rhizomorpha subcorticalis Pers.)

Black root and stem rot

Scytalidium sp.

(synanamorph: Hendersonula toruloidea Nattras)

(synanamorph: Hendersonula toruloidea Nattras)

Blight leaf spot

Cercospora vicosae Muller & Chupp

Brown leaf spot

Cercosporidium henningsii (Allesch.) Deighton

(teleomorph: Mycosphaerella henningsii Sivanesan)

Cassava ash

Oidium manihotis Henn.

Concentric ring leaf spot

Phyllosticta manihotae Viegas

P. manihoticola Syd.

Dematophora root rot (Rosellinia root rot)

Dematophora necatrix R. Hartig

(teleomorph: Rosellinia necatrix Prill.)

Diplodia root and stem rot

Diplodia manihotis Sacc.

Fusarium root rot

Fusarium oxysporum Schlechtend.:Fr.

F. solani (H. Mart.) Sacc.

(teleomorph: Nectria haematococca Berk. & Broome)

Phytophthora root rot

Phytophthora cryptogea Pethybr. & Lafferty

P. drechsleri Tucker

P. erythroseptica Pethybr.

P. nicotianae Breda de Haan var. parasitica (Dastur)
    G.M. Waterhouse

Pythium root rot

Pythium spp.

Rigidopurus root rot

Rigidoporus microporus (Sw.:Fr.) Overeem

= R. lignosus (Klotzsch) Imazeki

Rust

Uromyces spp.

Sclerotium root rot (southern blight)

Sclerotium rolfsii Sacc.

(teleomorph: Athelia rolfsii (Curzi) Tu & Kimbrough)

Superelongation

Sphaceloma manihoticola Bitancourt & Jenk.

(teleomorph: Elsinoe brasiliensis Bitancourt & Jenk.)

Verticillium root and stem rot

Verticillium dahliae Kleb.

White leaf spot

Phaeoramularia manihotis (F. Stevens & Solheim) M.B. Ellis

MISCELLANEOUS DISEASES OR DISORDERS

Post-harvest root rot

Physiologic and pathogenic deteriorations

Root smallpox disease

Microbial rotting after feeding by Cyrtomenus bergi Froeschner

VIRUS DISEASES

African cassava mosaic

African cassava mosaic virus

Antholysis

MLO

Cassava common mosaic

Cassava common mosaic virus

Cassava frogskin

Phytoreolike virus (probably)

Cassava green mottle

Cassava green mottle virus

Cassava symptomless infections

Cassava American latent virus

Cassava Ivorian bacilliform virus

Cassava vein mosaic

Cassava vein mosaic virus

Indian cassava mosaic

Indian cassava mosaic virus

Witches' broom

MLO