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Diseases of Soybean
(Glycine max (L.) Merrill)

Sung M. Lim and D. W. Chamberlain, primary collators, updated by S. M. Lim (last update 8/03/01)


BACTERIAL DISEASES

Bacterial blight
Pseudomonas syringae pv. glycinea (Coerper 1919) Young, Dye & Wilkie 1978
Bacterial crinkle-leaf
Pseudomonas syringae subsp. syringae van Hall 1902
Bacterial pustules
Xanthomonas axonopodis pv. glycines (Nakano 1919)
    Vauterin, Hoste, Kersters & Swings 1995
= Xanthomonas campestris pv. glycines (Nakano 1919)
    Dye 1978b
Bacterial tan spot
Curtobacterium flaccumfaciens pv. flaccumfaciens
    (Hedges 1922) Collins & Jones 1983
= Corynebacterium flaccumfaciens pv. flaccumfaciens
    (Hedges 1922 Dowson 1942
Bacterial wilt
Curtobacterium flaccumfaciens pv. flaccumfaciens
    (Hedges 1922) Collins & Jones 1983
Ralstonia solanacearum (Smith 1896) Yabuuchi et al. 1996
=Pseudomonas solanacearum (Smith 1896) Smith 1914
Wildfire
Pseudomonas syringae pv. tabaci (Wolf & Foster 1917) Young, Dye & Wilkie 1978

FUNGAL DISEASES

Alternaria leaf spot
Alternaria spp.
Anthracnose
Colletotrichum truncatum (Schwein.) Andrus & W.D. Moore
C. dematium (Pers.) Grove f. truncatum (Schwein.) Andrus & W.D. Moore
Glomerella glycines F. Lehm. & F.A. Wolf
    Colletotrichum destructivum O'Gara [anamorph]
Black leaf blight*
Arkoola nigra J. Walker & G. Stovold
Black root rot
Thielaviopsis basicola (Berk. & Broome) Ferraris
    Chalara elegans Naj Raj & Kendrick [synanamorph]
Brown spot
Septoria glycines Hemmi
    Mycosphaerella usoenskajae Mashk & Tomil
    [teleomorph]
Brown stem rot
Phialophora gregata (Allington & D.W. Chamberlain)
    W. Gams
= Cephalosporium gregatum Allington & D.W. Chamberlain
Charcoal rot
Macrophomina phaseolina (Tassi) Goidanich
Choanephora leaf blight
Choanephora infundibulifera (Currey) Sacc.
C. trispora (Thaxter)
Damping-off
Rhizoctonia solani Kühn
    Thanatephorus cucumeris (A.B. Frank) Donk
    [teleomorph]
Pythium aphanidermatum (Edison) Fitzp.
P. debaryanum Auct. non R. Hesse
P. irregulare Buisman
P. myriotylum Drechs.
P. ultimum Trow
Downy mildew
Peronospora manshurica (Naumov) Syd. In Gaum.
Drechslera blight
Drechslera glycines Narayanasamy & Durairj
Frogeye leaf spot
Cercospora sojina K. Hara
Fusarium root rot
Fusarium spp.
Leptosphaerulina leaf spot
Leptosphaerulina trifolii (Rostr.) Petr.
Mycoleptodiscus root rot
Mycoleptodiscus terrestris (Gerdemann) Ostazeski
Neocosmospora stem rot
Neocosmospora vasinfecta E.F. Sm.
    Acremonium sp. [anamorph]
Phomopsis seed decay
Phomopsis spp.
Phytophthora root and stem rot
Phytophthora sojae Kaufmann & Gerdemann
Phyllosticta leaf spot
Phyllosticta sojicola C. Massal
Phymatotrichum root rot = cotton root rot
Phymatotrichopsis omnivora (Duggar) Hennebert
= Phymatotrichum omnivorum Duggar
Pod and stem blight
Diaporthe phaseolorum (Cke. & Ell.) Sacc. var. sojae (Lehman) Wehm.
    Phomopsis sojae Lehman [anamorph]
Powdery mildew
Microsphaera diffusa Cooke & Peck
Purple seed stain
Cercospora kikuchii (Mastsumoto & Tomoyasu) M.W. Gardner
Pyrenochaeta leaf spot*
Pyrenochaeta glycines Stewart
Pythium rot
Pythium aphanidermatum (Edison) Fitzp.
P. debaryanum Auct. non R. Hesse
P. irregulare Buisman
P. myriotylum Drechs.
P. ultimum Trow
Red crown rot
Cylindrocladium crotalariae (C.A. Loos) D.K. Bell & Sobers
    Calonectria crotalariae (C.A. Loos) D.K. Bell & Sobers
    [teleomorph]
Red leaf blotch = Dactuliophora leaf spot*
Dactuliochaeta glycines (R. B. Stewart) Hartman & Sinclair
= Pyrenochaeta glycines (R. B. Stewart)
    Dactuliophora glycines Leaky [synanamorph]
Rhizoctonia aerial blight
Rhizoctonia solani Kühn
    Thanatephorus cucumeris (A.B. Frank) Donk
    [teleomorph]
Rhizoctonia root and stem rot
Rhizoctonia solani Kühn
Rust*
Phakopsora pachyrhizi Syd.
Scab*
Spaceloma glycines Kurata & Kuribayashi
Sclerotinia stem rot
Sclerotinia sclerotiorum (Lib.) de Bary
Southern blight (damping-off and stem rot) = Sclerotium blight
Sclerotium rolfsii Sacc.
    Athelia rolfsii (Curzi) Tu & Kimbrough [teleomorph]
Stem canker
Diaporthe phaseolorum (Cooke & Ellis) Sacc.
D. phaseolorum (Cooke & Ellis) Sacc. var. caulivora Athow & Caldwell
    Phomopsis phaseoli (Desmaz) Sacc [anamorph]
Stemphylium leaf blight*
Stemphylium botryosum Wallr.
    Pleospora tarda (E. Simmons) [teleomorph]
Sudden death syndrome
Fusarium solani (Mart.) Sacc. f. sp. glycines
Target spot
Corynespora cassiicola (Berk. & M.A. Curtis) C.T. Wei

NEMATODES, PARASITIC

Lance nematode
Hoplolaimus columbus Sher
H. galeatus (Cobb) Sher
H. magnistylus Robbins
Lesion nematode
Pratylenchus spp.
Pin nematode
Paratylenchus projectus Jenkins
P. tenuicaudatus Wu
Reniform nematode
Rotylenchulus reniformis Linford & Oliveira
Ring nematode
Criconemella ornata (Raski) Luc & Raski
Root-knot nematode
Meloidogyne arenaria (Neal) Chitwood
M. hapla Chitwood
M. incognita (Kofoid & White) Chitwood
M. javanica (Treub) Chitwood
Sheath nematode
Hemicycliophora spp.
Soybean cyst nematode
Heterodera glycines Ichinohe
Spiral nematode
Helicotylenchus spp.
Sting nematode
Belonolainus gracilis Steiner
B. longicaudatus Rau
Stubby root nematode
Paratrichodorus minor (Colbran) Siddiqi
Stunt nematode
Quinisulcius acutus (Allen) Siddiqi
Tylenchorhynchus spp.

VIRAL DISEASES

Alfalfa mosaic
genus Alfamovirus, Alfalfa mosaic virus (AMV)
Bean pod mottle
genus Comovirus, Bean pod mottle virus (BPMV)
Bean yellow mosaic
genus Potyvirus, Bean yellow mosaic virus (BYMV)
Brazilian bud blight
genus Ilarvirus, Tobacco streak virus (TSV)
Cowpea chlorotic mottle
genus Bromovirus, Cowpea chlorotic mottle virus (CCMV)
Mung bean yellow mosaic*
genus Begomovirus, Mung bean yellow mosaic virus (MYMV)
Peanut mottle
genus Potyvirus, Peanut mottle virus (PeMoV)
Peanut stripe
genus Potyvirus, Peanut stripe virus (PStV)
Peanut stunt
genus Cucumovirus, Peanut stunt virus (PSV)
Soybean chlorotic mottle*
genus Caulimovirus, Soybean chlorotic mottle virus (SbCMV)
Soybean crinkle leaf*
genus Begomovirus, Soybean crinkle leaf virus (SCLV)
Soybean dwarf*
genus Luteovirus, Soybean dwarf virus (SbDV)
Soybean mosaic
genus Potyvirus, Soybean mosaic virus (SMV)
Soybean severe stunt
genus Nepovirus, Soybean severe stunt virus (SSSV)
Tobacco ringspot = bud blight
genus Nepovirus, Tobacco ringspot virus (TRSV)

MISCELLANEOUS DISEASES and DISORDERS

Yeast spot
Nematospora coryli Peglion


*Not known to occur naturally in the United States of America.