IDENTIFICATION OF POTENTIAL BIO-AGENTS, EVALUATION OF NEW MOLECULES AND SCREENING FOR RESISTANCE TO MITIGATE SHEATH BLIGHT OF RICE

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dc.contributor.advisorKOTASTHANE, A.S.
dc.contributor.advisorTIWARI, P.K.
dc.contributor.advisorNAIR, SUNIL
dc.contributor.advisorCHANDRAKAR, G.
dc.contributor.authorAmit
dc.date.accessioned2019-08-22T10:40:47Z
dc.date.available2019-08-22T10:40:47Z
dc.date.issued2019
dc.descriptionIDENTIFICATION OF POTENTIAL BIO-AGENTS, EVALUATION OF NEW MOLECULES AND SCREENING FOR RESISTANCE TO MITIGATE SHEATH BLIGHT OF RICEen_US
dc.description.abstractRice (Oryza sativa L.) is most important crop among all the cereals that constitute the staple diet all over the world. In case of Asia rice is the largest growing cereal crop. Chhattisgarh state is popularly known as “bowl of rice” of the country; rice is grown as principal crop of this state and occupies 70 per cent of net sown area. Sheath blight of rice is second most economically important disease after blast. In tropical Asia, cultivation of rice under lowland condition cause average yield loss ranges between 5-10% and 5-20% in case of Chhattisgarh. Most common practice among farmers for the effective management of sheath blight is application of fungicide which is adopted worldwide. However it is necessary to evaluate or screen the new molecules of fungicides for the management of the disease very effectively. Fungicide molecules are hazardous to natural ecosystem an answer to this problem application of fungicides is replaced by use of bio-control agents which is more eco-friendly in the long term. For eco-friendly management of rice diseases host resistance is major tool and has played a major role in sustaining the production of rice. For effective management of sheath blight, development of resistant cultivar is a best approach as it required no extra cost to farmers and safe to environment. The present investigation was therefore undertaken with the evaluation and identification of potential bio-agents against Rhizoctonia solani. Confrontation assays involving 131 bio-agents (121 Pseudomonas fluorescens + 10 isolates of Trichoderma spp.) identified two potential fluorescent Pseudomonas (P86 and P74) and 10 isolates of Trichoderma spp. effective against R. solani. Two new molecules WCPL6060 and BAS 750 02 F along with reference fungicides were evaluated and were found effective in reducing the rate of disease development when the fungicidal applications were used as curative sprays. Seventeen rice genotypes were reevaluated for sheath blight resistance following artificial inoculation of which 14 expressed resistances.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810123290
dc.keywordsBIO-AGENTS, MOLECULES, SCREENING, MITIGATE SHEATH BLIGHT, RICEen_US
dc.language.isoenen_US
dc.pages114p.en_US
dc.publisherIndira Gandhi Krishi Vishwavidyalaya, Raipuren_US
dc.research.problemIDENTIFICATION OF POTENTIAL BIO-AGENTS, EVALUATION OF NEW MOLECULES AND SCREENING FOR RESISTANCE TO MITIGATE SHEATH BLIGHT OF RICEen_US
dc.subPlant Pathologyen_US
dc.subjectnullen_US
dc.themeAGRICULTURE, PLANT PATHOLOGYen_US
dc.these.typeM.Scen_US
dc.titleIDENTIFICATION OF POTENTIAL BIO-AGENTS, EVALUATION OF NEW MOLECULES AND SCREENING FOR RESISTANCE TO MITIGATE SHEATH BLIGHT OF RICEen_US
dc.typeThesisen_US
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