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