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List Of Azalea Diseases
This article is a list of diseases of azalea (''Rhododendron'' spp.). Fungal diseases Nematodes, parasitic {, class="wikitable" style="clear:left" ! colspan=2, Nematodes, parasitic , - , Dagger, American , , ''Xiphinema americanum'' , - , Pin , , ''Paratylenchus curvitatus'' , - , Root-knot , , ''Meloidogyne'' spp. , - , Sheath , , ''Hemicycliophora'' spp. , - , Spiral , , ''Rotylenchus buxophilus'' ''R. robustus'' , - , Stubby-root , , ''Paratrichodorus minor'' , - , Stunt , , ''Tylenchorhynchus claytoni'' , - ReferencesCommon Names of Diseases, The American Phytopathological Society Lists of plant diseases, Azalea Rhododendron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azalea
Azaleas are flowering shrubs in the genus ''Rhododendron'', particularly the former sections '' Tsutsusi'' (evergreen) and '' Pentanthera'' (deciduous). Azaleas bloom in the spring (April and May in the temperate Northern Hemisphere, and October and November in the Southern Hemisphere), their flowers often lasting several weeks. Shade tolerant, they prefer living near or under trees. They are part of the family Ericaceae. Cultivation Plant enthusiasts have selectively bred azaleas for hundreds of years. This human selection has produced over 10,000 different cultivars which are propagated by cuttings. Azalea seeds can also be collected and germinated. Azaleas are generally slow-growing and do best in well-drained acidic soil (4.5–6.0 pH). Fertilizer needs are low. Some species need regular pruning. Azaleas are native to several continents including Asia, Europe and North America. They are planted abundantly as ornamentals in the southeastern US, southern Asia, and part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calonectria Theae
''Calonectria indusiata'' is a fungal plant pathogen with several hosts. Infected plants See: * List of azalea diseases * List of foliage plant diseases (Palmae) * List of rhododendron diseases * List of tea diseases Many of the diseases, pathogens and pests that affect the tea plant (''Camellia sinensis'') may affect other members of the plant genus ''Camellia''. Bacterial diseases Fungal diseases Nematodes, parasitic Lepidoptera (butterflies and moth) ... References Fungal plant pathogens and diseases Tea diseases Ornamental plant pathogens and diseases Nectriaceae Fungi described in 2002 Fungus species {{fungus-plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phomopsis
''Phomopsis'' is a genus of ascomycete fungi in the family Valsaceae. Species Species include: * '' Phomopsis arnoldiae'' * '' Phomopsis asparagi'' * ''Phomopsis asparagicola'' * ''Phomopsis azadirachtae'' * '' Phomopsis cannabina'' * '' Phomopsis caricae-papayae'' * ''Phomopsis coffeae'' * '' Phomopsis durionis'' Syd. 1932 * '' Phomopsis elaeagni'' * ''Phomopsis ganjae'' * '' Phomopsis javanica'' * '' Phomopsis juniperovora'' * '' Phomopsis lokoyae'' * '' Phomopsis longicolla'' * '' Phomopsis mangiferae'' * '' Phomopsis obscurans'' * ''Phomopsis perseae'' * ''Phomopsis pittospori'' * '' Phomopsis prunorum'' * ''Phomopsis sojae'' * '' Phomopsis scabra'' * '' Phomopsis sclerotioides'' * '' Phomopsis tanakae'' * '' Phomopsis theae'' * ''Phomopsis viticola'' Formerly placed here: *''Phomopsis vaccinii'', now '' Diaporthe vaccinii'' *''Phomopsis leptostromiformis'', now ''Diaporthe toxica'' Dead-arm infection One of the species of this genus, '' P. viticola'', cause a grape diseas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pestalotia Rhododendri
''Pestalotia rhododendri'' is a fungal plant pathogen Plant pathology (also phytopathology) is the scientific study of diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). Organisms that cause infectious disease include fungi, oomyc ... infecting azaleas and rhododendrons. Important diseases: Pestalotiopsis tip blight of conifers, Gray leaf spot Pestalotia is primarily a secondary pathogen. It is saprophytic on dead and dying tissues and is weakly parasitic infecting wounds under moist conditions. Tips of conifer branches particularly Leyland cypress, arborvitae and juniper turn brown to grayish in color. Infected bark may be covered in fungal fruiting structures giving the tissue a black sooty appearance. Leaf spots tend to be tan to gray and are often the result of previous damage such as freeze injury, scorching or mechanical wounds. Dark, disc or cushion-shaped acervuli are formed under the plant epide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pestalotiopsis Sydowiana
''Pestalotiopsis sydowiana'' is a plant pathogen infecting azaleas and rhododendron ''Rhododendron'' (; from Ancient Greek ''rhódon'' "rose" and ''déndron'' "tree") is a very large genus of about 1,024 species of woody plants in the heath family (Ericaceae). They can be either evergreen or deciduous. Most species are nati ...s. References External links USDA ARS Fungal Database Fungal plant pathogens and diseases Ornamental plant pathogens and diseases sydowiana {{Xylariales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ovulitis Azaleae
Ovulitis azaleae is a plant pathogen affecting azaleas and rhododendrons. See also * List of azalea diseases This article is a list of diseases of azalea (''Rhododendron'' spp.). Fungal diseases Nematodes, parasitic {, class="wikitable" style="clear:left" ! colspan=2, Nematodes, parasitic , - , Dagger, American , , ''Xiphinema americanum'' , - , P ... * List of rhododendron diseases References External links Index FungorumUSDA ARS Fungal Database Fungal plant pathogens and diseases Ornamental plant pathogens and diseases Sclerotiniaceae Fungus species {{Leotiomycetes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ovulinia Azaleae
''Ovulinia azaleae'' is a plant pathogen affecting azaleas and rhododendrons. Ovulinia petal blight Ovulinia petal blight is commonly referred to as Ovulinia flower blight, Azalea flower blight, and Azalea flower spot. 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 slo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exobasidium Azaleae
''Exobasidium vaccinii'' var. ''japonicum'' is a plant pathogen. References External links Index FungorumUSDA ARS Fungal Database Fungal plant pathogens and diseases Ustilaginomycotina Fungi described in 1896 {{fungus-plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exobasidium Vaccinii
''Exobasidium vaccinii'', commonly known as “red leaf disease,” or “Azalea Gall,” is a biotrophic species of fungus that causes galls on ericaceous plant species, such as blueberry and azalea (''Vaccinium'' and ''Rhododendron'' spp.). As a member of the Ustilagomycota, it is a basidiomycete closely related to smut fungi. Karl Wilhelm Gottlieb Leopold Fuckel first described the species in 1861 under the basionym ''Fusidium vaccinii,'' but in 1867 Mikhail Stepanovich Voronin (often cited as “Woronin”) later placed it in the genus '' Exobasidium''. The type specimen is from Germany, and it is held in the Swedish Museum of Natural History. Morphology In its pathogenic state, ''E. vacinnii'' causes discoloration and, depending on the host, may cause hypertrophy and hyperplasia on the leaves and meristem, often forming flower-like structures (i.e. “pseudoflowers”). It may also cause green spots on blueberry fruits, which are sometimes tinted red and have occasional ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Septoria Azaleae
''Septoria azaleae'' is a fungal plant pathogen infecting azaleas. References External links Index FungorumUSDA ARS Fungal Database azaleae Fungal plant pathogens and diseases Ornamental plant pathogens and diseases Fungi described in 1899 {{fungus-plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exobasidium Burtii
''Exobasidium burtii'' is a species of fungus in the family Exobasidiaceae. It is a plant pathogen Plant pathology (also phytopathology) is the scientific study of diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). Organisms that cause infectious disease include fungi, oomy .... References Fungal plant pathogens and diseases Ustilaginomycotina Fungi described in 1934 {{fungus-plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thanatephorus Cucumeris
''Rhizoctonia'' is a genus of fungi in the order Cantharellales. Species form thin, effused, corticioid basidiocarps (fruit bodies), but are most frequently found in their sterile, anamorphic state. ''Rhizoctonia'' species are saprotrophic, but some are also facultative plant pathogens, causing commercially important crop diseases. Some are also endomycorrhizal associates of orchids. The genus name was formerly used to accommodate many superficially similar, but unrelated fungi. Taxonomy History Anamorphs ''Rhizoctonia'' was introduced in 1815 by French mycologist Augustin Pyramus de Candolle for anamorphic plant pathogenic fungi that produce both hyphae and sclerotia. The name is derived from Ancient Greek, ῥίζα (''rhiza'', "root") + κτόνος (''ktonos'', "murder"), and de Candolle's original species, ''Rhizoctonia crocorum'' (teleomorph '' Helicobasidium purpureum''), is the causal agent of violet root rot of carrots and other root vegetables. Subsequent authors a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
