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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 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 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 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.Item Convenient synthesis of (E)11-hexadecenyl acetate; the female sex pheromone of the brinjal moth Leucinodes orbonalis guenee(National Science Council:Colombo, 1992) Gunawardena, N.E.