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Eco-Friendly Alternatives for Storage Pest Management:Leaves of Ruta Graveolens (Aruda) as a Repellent Against the Rice Weevil, Sitophilus Oryzae L.

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dc.contributor.author Perera, A.G.W.U.
dc.contributor.author Karunaratne, M.M.S.C.
dc.date.accessioned 2017-10-23T04:50:01Z
dc.date.available 2017-10-23T04:50:01Z
dc.date.issued 2015
dc.identifier.citation Perera, A.G.W.U., Karunaratne, M.M.S.C. (2015). "Eco-Friendly Alternatives for Storage Pest Management:Leaves of Ruta Graveolens (Aruda) as a Repellent Against the Rice Weevil, Sitophilus Oryzae L.", International Journal of Multidisciplinary Studies (IJMS), Vol.2 (2), pp. 5158 en_US, si_LK
dc.identifier.uri http://dr.lib.sjp.ac.lk/handle/123456789/6013
dc.description.abstract Attached en_US, si_LK
dc.description.abstract in view of worldwide interest and greater public awareness in finding plant products as the most promising and ecologically safer alternatives for synthetic insecticides in post-harvest protection of stored rice, present study .yvas undertaken to explore the potential of leaves of Ruta graveolens (Aruda) as a repellent against S. oryzae infestations. Leaf powder and solvent extracts of R. graveolens were evaluated for their contact and fumigant repellent properties against seven day old S. oryzae adults. In contact repellency test, weevils (20 Veadhfwere exposed to 1.0 g, 3.0 g, 5.0 g; and 7.0 g of leaf powder mixed with white raw rice grains in a modified cup bioassay apparatus. Fumigation repellency of leaf powder was tested using same dosages and the number of weevils in a fumigalion-repeltency chamber. Number of weevils that moved from the bioassav ■ chamfer was recorded one hour after weevil introduction. Leaves of R. graveolens were extracted in hexane. . ethyl acetate, methanol, distilled water and different concentrations 10. 50. 100% (v/v) were assessed separately to evaluate repellent activity by means of an area preference bioassay. In all experiments, ten weevils for each were tested and the number repelled w m recorded 30 minutes after weevil introduction. Highest contact and fumigant repellent effects were elicited by 7.0 g of leaf powder resulting 96% and 95%, respectively, whilst lowest dose also produced more than 50%, repellency indicating extremely strong repellent action of the plant powder. In comparison, aqueous extract exhibited the most potent repellent •activity.(9!%,) while other extracts were producing over 70% repellent effects on weevils at the concentration cf 100% (v/v). Overall findings of the. study suggest that both powder and extracts o f R. graveolens leaves could be used as eco-friendly agents for post-harvest rice protection.
dc.language.iso en_US en_US, si_LK
dc.publisher International Journal of Multidisciplinary Studies (IJMS) en_US, si_LK
dc.subject Ruta graveolens en_US, si_LK
dc.subject Sitophilus oryzae en_US, si_LK
dc.subject stored rice en_US, si_LK
dc.subject leaf powder en_US, si_LK
dc.subject repellent en_US, si_LK
dc.title Eco-Friendly Alternatives for Storage Pest Management:Leaves of Ruta Graveolens (Aruda) as a Repellent Against the Rice Weevil, Sitophilus Oryzae L. en_US, si_LK
dc.type Article en_US, si_LK


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