4.Journals Published in Sri Lanka
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Item Characterization of soil physical properties in Andigama series in relation to coconut root growth(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1996) Vidhana Arachchi, L.P.; Mapa, R.B.; Yapa, P.A.J.; Somapala, H.Item The drought and supportive irrigation for coconut(Coconut Research Institute. Lunuwila, 1993) Dias, N.S.Item Pheromone baited traps. a promising tool in integrated pest management(Coconut Research Institute. Lunuwila, 1996/1997) Rajapakse, C.N.K.Item Indigenous technology for termite control(Coconut Research Institute. Lunuwila, 1996/1997) Appuhamy, P.A.H.N.Item In-vitro screening for drought tolerance in coconut(Coconut Research Institute. Lunuwila, 1996/1997) Shantha, E.S.Item Minimizing drought damage on coconut in major soil types(Coconut Research Institute. Lunuwila, 1996/1997) Vidana Arachchi, L.P.Item Uses and management of nitrogen fixing trees in coconut plantations(Coconut Research Institute. Lunuwila, 1996/1997) Liyanage, M. De S.Item Organic manures. a potential micronutrient source for coconut(Coconut Research Institute. Lunuwila, 1996/1997) Tennakoon, N.A.; Somasiri, L.L.W.Item Studies on root and tuber crops grown in association with coconut(CRI. Lunuwila, 1984) Ibrahim, M.N.M.; Liyanage, M.De.S.Item Pheromone baited trap for the management of red palm weevil, Rhynchophours ferrugineus F. (Coleoptera:Curculionide) population in coconut plantation(Coconut Research Institute. Lunuwila, 1998/1999) Rajapakse, C.N.K.; Gunawardena, N.E.; Perea, K.F.G.4-methyl-5-nonanol (ferrugineol), the major component of the aggregation pheromone of rhynchophorus ferrugineus F. was evaluated as a lure for trapping of this pest in coconut plantations in Sri Lanka. Trap design, longevity of ferrugineol in field conditions, and the effect of trapping on damage incidence of R.ferrugineus were studied. N-pentanol, a known compound present in coconut stem volatiles was used in combination of ferrugineol in all tested traps. Trap designs tested were; an open plastic bucket, a funnel trap, and a modified metal trap. The open plastic bucket (5L) baited with ferrugineol -pentanol, which was hung on coconut palm stem at 1.5m, caught significatly more number of adult weevils than ferrugineol pentanol baited funnel and metal traps. An open plastic bucket trap was six times less expensive than the metal trap currently recommended by the Coconut Research Institute, Sri Lanka. Ferrugineol remained effective as a balt for 12 weeks under field conditions. High capture rates of adult R. ferrugineus were obtained in ferrugineol baited open bucket traps in plantations where the initial damage incidence was high. Monthly surveys of individual palms during pheromone trapping revealed that a sharp reduction of the number of coconut palms demaged by R. ferrugineus in 10 hectare experimental blocks. Continuous trapping of weevils with ferrugineol over a period of time significantly lowered the infestation of this pest.