DIVERSITY OF ENTOMOPATHOGENIC NEMATODES (EPN) IN ASSAM

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dc.contributor.advisorGogoi, B. B.
dc.contributor.authorBorgohain, Nivedita
dc.date.accessioned2017-11-10T08:47:34Z
dc.date.available2017-11-10T08:47:34Z
dc.date.issued2015
dc.description.abstractAn investigation was carried out to see the diversity and distribution of Entomopathogenic nematodes in Assam. EPNs were recovered at a frequency of 14.75 per cent from 45 samples out of the 305 number samples. The highest frequency of 30.00 per cent was recorded in Karbi-Anglong district and lowest of 10.00 per cent was from Dhubri district. Identification of EPNs isolates were made on the basis of morphological and morphometric studies on the developmental stages of the nematodes. Four species of EPN viz., Steinernema abbasi, Steinernema karii and Heterorhabditis bacteriophora and Heterorhabditis sonorensis were identified. Heterorhabditis sonorensis is for the first time reported from India. Among the identified species Steinernema abbasi is more prevalent, like Heterorhabditis sonorensis are more abundant in our ecosystem. Highest record of EPNs was in forest eco-system (20%) followed by perennial fruit crops (18.18), grass land (15.4%), ornamental crops (9.43%) and vegetables (6.00%). Steinernema spp. isolated from acidic to alkaline soil whereas Heterorhabditis spp. from acidic to alkaline soil with low to high organic matter content. On the basis of soil types, highest EPNs were recorded from sandy loam soilen_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810035351
dc.keywordsENTOMOPATHOGENIC NEMATODES, Assamen_US
dc.language.isoenen_US
dc.publisherAAU, Jorhaten_US
dc.subNematologyen_US
dc.subjectnullen_US
dc.themeDIVERSITY OF ENTOMOPATHOGENIC NEMATODESen_US
dc.these.typePh.Den_US
dc.titleDIVERSITY OF ENTOMOPATHOGENIC NEMATODES (EPN) IN ASSAMen_US
dc.typeThesisen_US
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