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Item Behavioural and electrophysiological responses of the coconut pest, Rhynchophorus ferrugineus (Coleoptera: Curculionidae) to host, nonhost and alternate host plant volatiles(Natural Resources Energy Science Authority:Colombo, 1995) Gunawardena, N.E.; Swarnakanthi, M.N.A.Item Investigations on toxic, antifeedant and repellent properties of the defensive secretion of Coridius janus (Hemiptera; Pentatomidae) and a synthetic mixture of its major volatile constituents(National Science Counicl:Colombo, 1991) Pathiratne, A.; Gunawardena, N.E.; Liyanage, S.K.J.Item Enhancement of the activity of ferrugineol by N-pentanol in an attractant baited trap for the coconut pest, Rhynchophorus ferrugineus F. (Coleoptera: Curculionidae)(Natural Resources Energy Science Authority:Colombo, 1995) Gunawardena, N.E.; Herath, H.M.W.K.B.Item Trans-2-hexenal/n-tridencane combination:a natural fumigant of the defensive secretion of Coridius janus (Hemiptera: pentatomidae)(National Science Council:Colombo, 1992) Gunawardena, N.E.Item Electroantennogram response of the coconut pest, Rhynchophorus ferrugineus (Coleoptera:Curculionidae) to alcohols(1994) Gunawardena, N.E.; Kern, F.Item Seasonal changes in the chemical composition of the defensive secretion of the rice pest LEPTOCORISA ORATORIUS (Hemiptera:Coreidae)(Natural Resources Energy Science Authority:Colombo, 1994) Gunawardena, N.E.Item Effect of (E)-11-hexadecen-1-ol the minor component of the sex pheromone gland on (E)-11-hexadecenyl acetate the sex pheromone of the brinjal pest Leucinodes orbonalis Guenee'in an electroantennogram assay(National Science Council:Colombo, 1993) Gunawardena, N.E.Item The sex pheromone of the brinjal pest, Leucinodes orbonalis guenee (Lepidoptera):problems and perspectives(Natural Resources Energy and Science Authority of Sri Lanka:Colombo, 1989) Gunawardena, N.E.; Attygalle, A.B.Item 4-Methyl-5-Nonanol (Ferrugineol) as an aggregation pheromone of the coconut pest, Rhynchophorus ferrugineus F. (Coleoptera: Curculionidae):synthesis and use in a preliminary field assay(Natural Resources Energy Science Authority:Colombo, 1995) Gunawardena, N.E.; Bandarage, U.K.