Diseases of Peanut (Arachis hypogaea L.)

D. Morris Porter, primary collator (last update 3/8/93)

BACTERIAL DISEASE

Bacterial wilt: Pseudomonas solanacearum (Smith) Smith

FUNGAL DISEASES

Alternaria leaf blight: Alternaria tenuissima (Kunze:Fr.) Wiltshire
Alternaria leaf spot: Alternaria arachidis Kulk.
Alternaria spot and veinal necrosis: Alternaria alternata (Fr.:Fr.) Keissl.
Anthracnose: Colletotrichum arachidis Sawada (not validly published); C. dematium (Pers.) Grove; C. mangenoti Chevaugeon
Aspergillus crown rot: Aspergillus niger Tiegh.
Blackhull: Thielaviopsis basicola (Berk. & Broome) Ferraris; (synanamorph: Chalara elegans Nag Raj & Kendrick)
Botrytis blight: Botrytis cinerea Pers.:Fr.; (teleomorph: Botryotinia fuckeliana (de Bary) Whetzel)
Charcoal rot and Macrophomina leaf spot: Macrophomina phaseolina (Tassi) Goidanich; = Rhizoctonia bataticola (Tassi) E.J. Butler
Choanephora leaf spot: Choanephora spp.
Collar rot: Lasiodiplodia theobromae (Pat.) Griffon & Maubl.; = Diplodia gossypina Cooke
Colletotrichum leaf spot: Colletotrichum gloeosporioides (Penz.) Penz. & Sacc. in
Penz.; (teleomorph: Glomerella cingulata (Stoneman) Spauld. &
H. Schrenk)
Cylindrocladium black rot: Cylindrocladium crotalariae (C.A. Loos) D.K. Bell &
Sobers; (teleomorph: Calonectria crotalariae (C.A. Loos) D.K. Bell
& Sobers)
Cylindrocladium leaf spot: Cylindrocladium scoparium Morg.; (teleomorph: Calonectria keyotensis Terishita)
Damping-off, Aspergillus: Aspergillus flavus Link:Fr.; A. niger Tiegh.
Damping-off, Fusarium: Fusarium spp.
Damping-off, Pythium: Pythium spp.
Damping-off, Rhizoctonia: Rhizoctonia spp.
Damping-off, Rhizopus: Rhizopus spp.
Drechslera leaf spot: Bipolaris spicifera (Bainier) Subramanian; = Drechslera spicifera (Bainier) Arx; (teleomorph: Cochliobolus spicifer R.R. Nelson)
Fusarium peg and root rot: Fusarium spp.
Fusarium wilt: Fusarium oxysporum Schlechtend.:Fr.
Leaf spot, early: Cercospora arachidicola S. Hori; (teleomorph: Mycosphaerella arachidis Deighton)
Leaf spot, late: Phaeoisariopsis personata (Berk. & M.A. Curtis) Arx; = Cercosporidium personatum (Berk. & M.A. Curtis)
Deighton; (teleomorph: Mycosphaerella berkeleyi Jenk.)
Melanosis: Stemphylium botryosum Wallr.; (teleomorph: Pleospora tarda E. Simmons)
Myrothecium leaf blight: Myrothecium roridum Tode:Fr.
Olpidium root rot: Olpidium brassicae (Woronin) P.A. Dang.
Peanut Smut
Pepper spot and scorch: Leptosphaerulina crassiasca (Sechet) C.R. Jackson &
D.K. Bell
Pestalotiopsis leaf spot: Pestalotiopsis arachidis Satya
Phoma leaf blight: Phoma microspora Berk. & M.A. Curtis nom. nud. non Sacc. non Pat. hom. illeg.
Phomopsis foliar blight: Phomopsis phaseoli (Desmaz.) Sacc.; = P. sojae Lehman; (teleomorph: Diaporthe phaseolorum (Cooke & Ellis) Sacc.)
Phomopsis leaf spot: Phomopsis spp.
Phyllosticta leaf spot: Phyllosticta arachidis-hypogaea V.G. Rao; P. sojicola C. Massal.; (teleomorph: Pleosphaerulina sojicola Miura)
Phymatotrichum root rot: Phymatotrichopsis omnivora (Duggar) Hennebert; = Phymatotrichum omnivorum Duggar
Pod rot (pod breakdown): Fusarium equiseti (Corda) Sacc.; = F. scirpi Lambotte & Fautrey; (teleomorph: Gibberella intricans Wollenweb.); F. solani (Mart.) Sacc.; (teleomorph: Nectria haematococca Berk. & Broome); Pythium myriotylum Drechs.; Rhizoctonia solani Kühn; (teleomorph: Thanatephorus cucumeris (A. Frank) Donk)
Powdery mildew: Oidium arachidis Chorin
Pythium peg and root rot: Pythium myriotylum Drechs.; P. aphanidermatum (Edson) Fitzp.; P. debaryanum Auct. non R. Hesse; P. irregulare Buisman; P. ultimum Trow
Pythium wilt: Pythium myriotylum Drechs.
Rhizoctonia foliar blight, peg and root rot: Rhizoctonia solani Kühn
Rust: Puccinia arachidis Speg.
Scab: Sphaceloma arachidis Bitancourt & Jenk.
Sclerotinia blight: Sclerotinia minor Jagger; S. sclerotiorum (Lib.) de Bary
Stem rot (southern blight): Sclerotium rolfsii Sacc.; (teleomorph: Athelia rolfsii (Curzi) Tu & Kimbrough)
Verticillium wilt: Verticillium albo-atrum Reinke & Berthier; V. dahliae Kleb.
Web blotch (net blotch): Phoma arachidicola Marasas et al.; = Ascochyta adzamethica Schoschiaschvili; (teleomorph: Didymosphaeria arachidicola (Chochrjakov)
Alcorn et al.; = Mycosphaerella arachidicola Chochrjakov)
Yellow mold: Aspergillus flavus Link:Fr.; A. parasiticus Speare
Zonate leaf spot: Cristulariella moricola (Hino) Redhead; (synanamorph: Sclerotium cinnomomi Sawada); (teleomorph: Grovesinia pyramidalis M. Cline et al.)

MISCELLANEOUS DISEASE OR DISORDER

Rugose leaf curl: Rickettsia-like organism

NEMATODES, PARASITIC

Dagger: Xiphinema spp.
Pod lesion: Tylenchorhynchus brevilineatus Williams; = T. brevicadatus Hopper
Ring: Criconemella ornata (Raski) Raski & Luc; = Macroposthonia ornata (Raski) DeGrisse & Loof
Root-knot, Javanese: Meloidogyne javanica (Treub) Chitwood
Root-knot, northern: Meloidogyne hapla Chitwood
Root-knot, peanut: Meloidogyne arenaria (Neal) Chitwood
Root lesion: Pratylenchus brachyurus (Godfrey) Filipjev &
Schuurmans-Stekhoven; P. coffeae (Zimmerman) Schuurmans-Stekhoven
Seed and pod: Ditylenchus destructor Thorne
Spiral: Scutellonema cavenessi Sher
Sting: Belonolaimus glacilis Steiner; B. longicaudatus Rau
Testa: Aphelenchoides arachidis Bos

PARASITIC HIGHER PLANTS

Dodder: Cuscata campestris Yunck.
Phanerogamic root parasite: Alectna sp. (Family:Scrophulariaceae)

VIRUS AND VIRUSLIKE DISEASES

(Also mycoplasmalike organism [MLO])

Cowpea mild mottle: Ex Cowpea mild mottle virus
Groundnut crinkle: Ex Groundnut crinkle virus
Groundnut eyespot: Ex Groundnut eyespot virus
Groundnut rosette: Ex Groundnut chlorotic rosette virus; Ex Groundnut green rosette virus
Groundnut streak: ExGroundnut streak virus
Marginal chlorosis: Ex Unknown (viruslike)
Peanut clump: Ex Peanut clump virus
Peanut green mosaic: Ex Peanut green mosaic virus
Peanut mottle: Peanut mottle virus
Peanut ringspot or bud necrosis: Tomato spotted wilt virus
Peanut stripe: Peanut stripe virus
Peanut stunt: Peanut stunt virus
Peanut yellow mottle: Ex Peanut yellow mottle virus
Tomato spotted wilt: Tomato spotted wilt virus
Witches' broom: MLO

Ex = exotic. This classification denotes diseases/organisms which are not known to occur naturally in the United States.