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- Ovulinia_azaleae abstract "Ovulinia azaleae is a plant pathogen.Ovulinia petal blight* First reported in the 1930s on the Belgian-Indica hybrids, petal blight can attack most azaleas under favorable weather conditions. Infected flowers first exhibit small spots, about 1 mm in diameter, which appear water-soaked. The spots enlarge rapidly and become very slimy, causing entire petals to become slimy and limp, usually within 2-3 days after initial infection. Infected areas of flowers soon become tan or light brown, and eventually entire flowers turn prematurely brown. Infected flowers dry and generally cling to the plant longer than uninfected flowers do. One to 20 (commonly two to five) small, black sclerotia (a fungal resting stage) form on an infected flower 6-8 weeks later. They appear first as small white areas on the dried petals and slowly become dark as they mature. Caused by the Ovulinia azaleae fungus, the disease develops during periods of moist weather at flowering time. Early- and late-flowering cultivars or species tend to escape the disease. The fungus overwinters as sclerotia on diseased petals adhering to plants, on the soil surface, or in leaf mulch under the bushes. At the beginning of the host's blooming period, the sclerotia germinate and in 3-5 days give rise to small stalked, cup-shaped fruiting bodies filled with spore sacs, which are discharged with sufficient force that they strike the lower blooms above the sclerotia or are carried in air currents to nearby blooms on adjacent plants. The rate of infection is higher when periods of frequent precipitation and warm weather coincide with flowering. Heavy dew or extended periods of misty weather are particularly favorable. Low temperatures at the beginning of the flowering period and dry conditions toward the end of it most likely reduce the infection potential. Spraying the infested soil with fungicides and removal of the leaf litter beneath infected plants have not been reliable methods of disease control. Sprays applied at or just before bud opening have offered the best means of control. In general, sprays of triadimefon or benomyl applied at weekly intervals throughout the flowering period have controlled the blight and inhibited sclerotium formation. Making sure diseased or disease-carrying plants are not introduced into the growing area reduces the disease potential. Source: http://azaleas.org/index.pl/azdiseasetext.html".
- Ovulinia_azaleae class Leotiomycetes.
- Ovulinia_azaleae class Leotiomycetidae.
- Ovulinia_azaleae family Sclerotiniaceae.
- Ovulinia_azaleae genus Ovulinia.
- Ovulinia_azaleae kingdom Fungus.
- Ovulinia_azaleae order Helotiales.
- Ovulinia_azaleae phylum Ascomycota.
- Ovulinia_azaleae synonym "Sclerotinia azaleae (F.A. Weiss) Dennis, (1956)".
- Ovulinia_azaleae wikiPageExternalLink azdiseasetext.html.
- Ovulinia_azaleae wikiPageExternalLink fungaldatabases.
- Ovulinia_azaleae wikiPageExternalLink Names.asp.
- Ovulinia_azaleae wikiPageID "11569258".
- Ovulinia_azaleae wikiPageRevisionID "544823770".
- Ovulinia_azaleae binomial "Ovulinia azaleae".
- Ovulinia_azaleae binomialAuthority "F.A. Weiss,".
- Ovulinia_azaleae classis Leotiomycetes.
- Ovulinia_azaleae familia Sclerotiniaceae.
- Ovulinia_azaleae genus "Ovulinia".
- Ovulinia_azaleae hasPhotoCollection Ovulinia_azaleae.
- Ovulinia_azaleae name "Ovulinia azaleae".
- Ovulinia_azaleae ordo Helotiales.
- Ovulinia_azaleae phylum Ascomycota.
- Ovulinia_azaleae regnum Fungus.
- Ovulinia_azaleae species "O. azaleae".
- Ovulinia_azaleae subclassis Leotiomycetidae.
- Ovulinia_azaleae synonyms "Sclerotinia azaleae ( Dennis, )".
- Ovulinia_azaleae subject Category:Plant_pathogens_and_diseases.
- Ovulinia_azaleae subject Category:Sclerotiniaceae.
- Ovulinia_azaleae type Agent109190918.
- Ovulinia_azaleae type CausalAgent100007347.
- Ovulinia_azaleae type InfectiousAgent109312843.
- Ovulinia_azaleae type LivingThing100004258.
- Ovulinia_azaleae type Microorganism101326291.
- Ovulinia_azaleae type Object100002684.
- Ovulinia_azaleae type Organism100004475.
- Ovulinia_azaleae type Pathogen101386007.
- Ovulinia_azaleae type PhysicalEntity100001930.
- Ovulinia_azaleae type PlantPathogensAndDiseases.
- Ovulinia_azaleae type Whole100003553.
- Ovulinia_azaleae type Eukaryote.
- Ovulinia_azaleae type Fungus.
- Ovulinia_azaleae type Species.
- Ovulinia_azaleae type Fungus.
- Ovulinia_azaleae type Organism.
- Ovulinia_azaleae comment "Ovulinia azaleae is a plant pathogen.Ovulinia petal blight* First reported in the 1930s on the Belgian-Indica hybrids, petal blight can attack most azaleas under favorable weather conditions. Infected flowers first exhibit small spots, about 1 mm in diameter, which appear water-soaked. The spots enlarge rapidly and become very slimy, causing entire petals to become slimy and limp, usually within 2-3 days after initial infection.".
- Ovulinia_azaleae label "Ovulinia azaleae".
- Ovulinia_azaleae sameAs m.02rjhbq.
- Ovulinia_azaleae sameAs Q7114218.
- Ovulinia_azaleae sameAs Q7114218.
- Ovulinia_azaleae sameAs Ovulinia_azaleae.
- Ovulinia_azaleae wasDerivedFrom Ovulinia_azaleae?oldid=544823770.
- Ovulinia_azaleae isPrimaryTopicOf Ovulinia_azaleae.
- Ovulinia_azaleae name "Ovulinia azaleae".