STUDIES ON GREY MOULD ROT OF STRAWBERRY AND ITS MANAGEMENT

dc.contributor.advisorSHARMA, I.M.
dc.contributor.authorVIJAY, KUMAR
dc.date.accessioned2017-02-16T07:42:18Z
dc.date.available2017-02-16T07:42:18Z
dc.date.issued2011
dc.description.abstractABSTRACT Grey mould rot is most destructive disease of Strawberry, wherever it is grown in the world causing yield losses up to 90 per cent. Present investigation was undertaken with the objectives to study the occurrence of this disease, role of abiotic environmental factors in its initiation and development and to devise suitable disease management practices. The disease was observed to occur in moderate to severe form in different Strawberry growing areas of Solan, Kullu, Sirmaur and Mandi districts of Himachal Pradesh, with maximum disease incidence (31.45%) in Dhaulakuan area of Sirmaur district. The associated fungus was isolated from the infected fruit samples collected from different locations and Koch’s postulates were proved. On the basis of morphological characters like shape, size and colour of conidia and conidiophores, the fungus was identified as Botrytis cinerea Pers. ex. Fr. Weather parameters were found to put considerable effect on disease development under field conditions. Low to moderate temperature (15-20ºC) accompanied with moderate to high humidity (65-73%) and minimum sunshine hrs (4-6 hrs) favoured the disease development. Disease incidence was positively correlated with relative humidity, rainfall and sunshine hours and negatively with temperature. Among twenty four cultivars of Strawberry screened against the target disease under natural epiphytotic conditions, five namely; Elsanta, Missionary, Senga Sengana, Tioga and Chandler exhibited highly susceptible reactions. Under in vitro conditions, fungicide carbendazim was most effective in inhibiting the growth of the pathogen and was followed by captan + hexaconazole, mancozeb and carbendazim+ Iprodione, respectively. Under filed conditions, three consecutive sprays of carbendazim (0.05%) starting with the first appearance of disease at 15 days interval was most effective (94.33 PDC). Next best fungicides were captan + hexaconazole and hexaconazole in order. Polythene mulch combined with two sprays of carbendazim (0.05%) was equally effective (94.20%). Further, leaf water extract of Vitex negundo was most effective under in vitro conditions against the target pathogen followed by vermiwash and neem leaf water extract.en_US
dc.identifier.other47634
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810001210
dc.keywordsStrawberry,Grey mould rot ,disease,managementen_US
dc.language.isoenen_US
dc.publisherUHF,NAUNI,SOLANen_US
dc.subPlant Pathologyen_US
dc.subjecteconomics, biological phenomena, resins, productivity, technological changes, exhibitions, developmental stages, marketing, biological development, selectionen_US
dc.themeStrawberry,Grey mould rot ,disease,managementen_US
dc.these.typeM.Scen_US
dc.titleSTUDIES ON GREY MOULD ROT OF STRAWBERRY AND ITS MANAGEMENTen_US
dc.typeThesisen_US
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