Distribution of entomopathogenic nematodes in coconut gardens of Kerala State and pathogenicity of Steinernema feltwe to red weevil, Rhynchophorus ferrugineus

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dc.contributor.authorSosamma, V.K.
dc.date.accessioned2014-06-09T10:07:14Z
dc.date.available2014-06-09T10:07:14Z
dc.date.issued2006
dc.description.abstractSteinernema feltiae and Steinernema spp. were found at five and Heterorhabdtiis indica at 128 sites out of 480 samples collected from coconut gardens in 10 districts of Kerala. Two hundred and fourteen (45%) were positive for Rhabditis sp. and 16(3%) for Aphelenchus sp. Analysis of soil samples revealed the highest occurrence of EPN in sandy loam soil followed by laterite and alluvial soil types. Soil samples collected from termite mounts did not yield any EPN. Forty per cent of soil samples yielded an earthworm Fridericia khallikottosus alongwith entomophilic nematodes. This indicates that EPN is not harmful to other non-targeUbeneficiai organisms. Ninety per cent of the frass collected from red weevil infested coconut palms yielded Teratorhabditis palmarum, which was only entomophilic and not pathogenic to red weevil. In bioefficiency tests of S. feltiae, on red weevil grubs, mortality occurred in 3-4 days. When the last instar larvae of Red weevil inoculated with 1000 nematodes, the adults emerged, were of reduced size compared to healthy ones. Soil application of S. feltiae against red weevil adults in the net house in the field resulted in 55-60% mortality of weevils, while in control it was only 10-12%.en_US
dc.identifier.citationJournal of Plantation Crops, 2006, 34 (3): 429-431en_US
dc.identifier.urihttp://hdl.handle.net/123456789/2605
dc.language.isoenen_US
dc.subjectCoconuten_US
dc.subjectentomopathogentic nematodesen_US
dc.subjectSteinernema feltiaeen_US
dc.subjectHeterorhabditis indicaen_US
dc.subjectred weevilen_US
dc.titleDistribution of entomopathogenic nematodes in coconut gardens of Kerala State and pathogenicity of Steinernema feltwe to red weevil, Rhynchophorus ferrugineusen_US
dc.typeArticleen_US

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