Fungal diseases
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Alternaria leaf blight, stem spot and head rot
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Alternaria alternata
= Alternaria tenuis
Alternaria helianthi
= Helminthosporium helianthi
Alternaria helianthicola
Alternaria leucanthemi
Alternaria tenuissima
Alternaria zinniae
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Botrytis head rot (gray mold)
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Botrytis cinerea
Botryotinia fuckeliania [teleomorph]
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Charcoal rot
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Macrophomina phaseolina
= Sclerotium bataticola
= Rhizoctonia bataticola
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Downy mildew
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Plasmopara halstedii
Plasmopara helianthi f. helianthi
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Fusarium stalk rot
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Fusarium equiseti
Gibberella intricans [teleomorph]
Fusarium solani
Nectria haematococca [teleomorph]
Microdochium tabacinum
= Fusarium tabacinum
Monographella cucumerina [teleomorph]
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Fusarium wilt
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Fusarium moniliforme
Gibberella fujikuroi [teleomorph]
Fusarium oxysporum
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Myrothecium leaf and stem spot
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Myrothecium roridum
Myrothecium verrucaria
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Phialophora yellows
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Phialophora asteris
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Phoma black stem
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Phoma macdonaldii
Leptosphaeria lindquistii
= Phoma oleracea var. helianthi-tuberosi [teleomorph]
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Phomopsis brown stem canker
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Phomopsis spp.
Phomopsis helianthi
Diaporthe helianthi [teleomorph]
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Phymatotrichum root rot (cotton root rot)
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Phymatotrichopsis omnivora
= Phymatotrichum omnivorum
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Phytophthora stem rot
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Phytophthora spp.
Phytophthora drechsleri
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Powdery mildew
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Erysiphe cichoracearum
Oidium asteris-punicei [anamorph]
Erysiphe cichoracearum var. latispora
Oidium latisporum[anamorph]
Leveillula compositarum f. helianthi
Leveillula taurica
Oidiopsis sicula [anamorph]
Sphaerotheca fuliginea
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Pythium seedling blight and root rot
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Pythium spp.
Pythium aphanidermatum
Pythium debaryanum
Pythium irregulare
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Rhizoctonia seedling blight
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Rhizoctonia solani
Thanatephorus cucumeris [teleomorph]
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Rhizopus head rot
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Rhizopus arrhizus
= Rhizopus nodosus
Rhizopus microsporus
Rhizopus stolonifer
= Rhizopus nigricans
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Rust
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Puccinia helianthi
Puccinia xanthii
Uromyces junci
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Sclerotinia basal stalk rot and wilt, mid-stalk rot, head rot
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Sclerotinia sclerotiorum
= Sclerotinia libertiana
= Whetzelinia sclerotiorum
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Sclerotinia basal stalk rot and wilt
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Sclerotinia minor
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Sclerotium basal stalk and root rot (southern blight)
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Sclerotium rolfsii
Athelia rolfsii [teleomorph]
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Septoria leaf spot
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Septoria helianthi
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Verticillium wilt
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Verticillium albo-atrum
Verticillium dahliae
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White rust
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Albugo tragopogonis
= Cystopus tragopogonis
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Yellow rust
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Coleosporium helianthi
Coleosporium pacificum
= Coleosporium madiae
Peridermium californicum [anamorph]
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