Ray blight
WebRay blight, caused by Phoma ligulicola var. inoxydabilis, is the most damaging disease of pyrethrum (Tanacetum cinerariifolium) in Australia. Data collected from 72 plots in commercial pyrethrum fields since 2001 to 2009 revealed substantial annual variations in isolation frequency of the pathogen during semidormancy of the crop in autumn and winter. WebRay blight was first reported on Chrysanthemum morifo-lium in the USA, and named after the most conspicuous symptom of the disease, i.e., discolouration and distortion of
Ray blight
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WebControl Of Ray Blight On Chrysanthemums Robert H. Brewster Associate Agricultural County Agent Suffolk County Ray^ Bright, caused by Asochyta chrysanthemi, is a chrysanthemum disease which was discovered in North Carolina. The disease is a serious problem in southern states and is now becoming one in the north as well. Both WebMay 16, 2008 · ABSTRACT Ray blight disease, caused by Phoma ligulicola var. inoxydablis, is a serious threat to the Tasmanian pyrethrum industry. The management of this disease …
WebSep 29, 2016 · Ray blight is a destructive disease of Asteraceae worldwide, affecting all above-ground parts with the most conspicuous symptom being necroses of the ray florets (Stevens 1907).Reported on many Asteraceae species, ray blight is of economic importance to chrysanthemum (Chrysanthemum × morifolium) and pyrethrum (Tanacetum … WebMar 4, 2024 · ray blight is the ‘shepherd’s crook’ appearance of flower buds, which is caused by infection and necrosis of one side of the upper flower stem (2–3 cm below the …
WebRay blight of pyrethrum (Tanacetum cinerariifolium), caused by Phoma ligulicola var. inoxydablis, can cause defoliation and reductions of crop growth and pyrethrin yield. Logistic regression was used to model relationships among edaphic factors and interpolated weather variables associated with seve … WebRay blight disease of pyrethrum (Tanacetum cinerariifolium) is shown to be caused by more than one species of Stagonosporopsis. The Australian pathogen, previously identified as Phoma ligulicola var. inoxydabilis, represents a new species described as Stagonosporopsis tanaceti based on morphological characters and a five-gene phylogeny employing partial …
WebRay blight of pyrethrum (Tanacetum cinerariifolium), caused by Phoma ligulicola var. inoxydablis, can cause defoliation and reductions of crop growth and pyrethrin yield. …
WebRay blight disease of pyrethrum (Tanacetum cinerariifolium) is shown to be caused by more than one species of Stagonosporopsis. The Australian pathogen, previously identified as … immunologic research submitWebMay 3, 2010 · The deployment of cultivars with enhanced levels of resistance to ray blight, and hence longer survival times of flowers, is recommended as a component of an integrated management programme for ray blight of pyrethrum, similar to the multi-faceted management approach developed for this disease in chrysanthemum (Baker et al., 1949, … immunologic function of the skinWeb15 rows · Jul 31, 2016 · Ascochyta Ray Blight: Flower development is retarded on one side of the bud. Petals exhibit a brown discoloration. Browning and blackening extends down … immunological tests for pregnancyWebSep 29, 2016 · Ray blight is a destructive disease of Asteraceae worldwide, affecting all above-ground parts with the most conspicuous symptom being necroses of the ray … immunologic research影响因子WebSep 1, 2015 · Ray Blight Chief Executive at Alcidion Corporation Published Sep 1, 2015 + Follow Adelaide, SA, September 1, 2015 – Alcidion ... immunologic thrombocytopenic purpuraWebRay blight appeared in a severe form which caused dieback of developing stems in early spring 1999 (28–30). Severe disease outbreaks were prevalent and complete crop loss was common in many fields (29,35). The occurrence of the severe form of ray blight coincided directly with the establishment of pyrethrum fields with seed. immunologic workupWebAug 11, 2011 · Ray blight, caused by Phoma ligulicola var. inoxydabilis, is the most damaging disease of pyrethrum (Tanacetum cinerariifolium) in Australia.Data collected … list of wars in south america