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Identification of Different Fungi Associated With Grain Discoloration Complex Disease of Rice and Management of Infested Grains through Fungicides

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Abstract. Grain discoloration complex disease of rice is an emerging threat to rice crop all over the world and it acquires particular importance as it results in qualitative loss of harvested crop. So the present study was carried out to identify different fungi associated with this complex disease and management of infested rice seeds though fungicides. For this purpose, discolored grain samples were collected and different fungi were isolated. Identification of isolated fungi was done on the basis of their morphological characters and purified culture of each fungus was prepared. Pathogenecity test was carried out in-vitro and in-vivo for the confirmation of involvement of fungi through calculation of percentage incidence. Statistical results illustrated that the homogenous mixture of spore suspension contains fungal spores of Fusarium spp, Tricoderma, Aspergillus flavus, Aspergilus niger, Helmithosporium, Cercospora, Alternaria, Bipolaris and Curvularia of rice proven most lethal in showing the maximum symptoms in-vitro and in-vivo. Statistical data for seed germination exhibited that Carbendazim and Diathene-M45 were comparatively better and improved percentage seed germination up to considerable levels followed by Redomil, Topsin-M and Cordate respectively.

Keywords: Carbendazim, Diathene-M45, In-vitro, In-vivo, Pathogenecity, Redomil

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DOI: http://dx.doi.org/10.12983/ijsras-2017-p0030-0035


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