Journal of the Rubber Research Institute of Sri Lanka
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Item Field performance of young coffee seedlings and cuttings intercropped with rubber(Rubber Research Institute. Agalawatta, 1988) Rodrigo, V.H.L.; Nugawela, A.; Kariyawasam, L.S.; Aluthhewage, R.K.Coffee may be planted either using seedlings or cuttings. Anyhow, a comparative study of their field establishment and performance has not been made. Iin this study seedlings and cuttings of Coffea canephora intercropped with rubber were compared for their field stablishment and growth. It is evident that there is no difference in the success of their field establishment. The dry matter yield determinants of plants, i. e. light intercept ion, conversion efficiency and rate of loss of dry matter, estimated by total leaf area, CO2 assimilation rate and dark respiratory rate respectively, are also similar in both seedlings and cuttings. This is confirmed by the similar mean total dry weight of a seedlings and a cuttings. The partitioning of assimilates is more towards root development in the cuttings and is evident by the significantly high root dry weight and the root/shoot ratio. The percentage of assimilates partitioning towards the growth of aerial parts is less in the cuttings, i. e. 52 and 67perc. for cuttings and seedlings respectively. Despite of similar light levels, the CO2 assimilation rates are lower in the afternoon in both seedlings and cuttings. The perc. deeline is 23.5 and 18.6perc. for seedlings and cuttings respectively.Item Local knowledge in rubber (Hevea brasiliensis) farming systems in Sri Lanka. applications and constraints(Rubber Research Institute. Agalawatta, 2010) Senevirathna, A.M.W.K.; Pathirana, P.D.; Rodrigo, V.H.L.; Sinclair, F.L.Item Feasibility of rubber (Hevea brasiliensis Muell.Arg.) cultivation in Eastern province of Sri Lanka with the peasant community(Rubber Research Institute. Agalawatta, 2010) Iqbal, S.M.M.; Rodrigo, V.H.L.; Karunathilake, P.K.W.Item High density banana/rubber intercrops have no negative effects component crops under the smallholder conditions(Rubber Research Institute. Agalawatta, 2010) Senevirathna, A.M.W.K.; Striling, C.M.; Rodrigo, V.H.L.; Pathirana, P.D.; Karunathilake, P.K.W.Item Effect of different light regimes on above and below ground development of Hevea brasiliensis during early stage of growth(Rubber Research Institute. Agalawatta, 2009) Senevirathna, A.M.W.K.; Karunatillake, P.K.W.; Pathirana, P.D.; Rodrigo, V.H.L.Item Rural livelihood and rubber cultivation in eastern province of Sri Lanka(Rubber Research Institute of Sri Lanka. Agalawatte, 2009) Rodrigo, V.H.L.; Iqbal, S.M.M.; Munasinghe, E.G.Item Adoption of different tapping systems in the rubber industry of Sri Lanka with special reference to low frequency tapping(Rubber Research Institute . Agalawatta, 2007) Rodrigo, V.H.L.Item Is shade important in rubber based cropping systems? part 1: effect of shade on growth dry matter partitioning and adaptation of rubber and banana(Rubber Research Institute of Sri Lanka. Agalawatte, 2002) Senevirathna, A.M.W.K.; Stirling, C.M.; Rodrigo, V.H.L.; Karunathilake, P.K.W.; Pathirana, P.D.Item Rubber/timer intercropping systems and their impact on the performance of rubber(Rubber Research Institute. Agalawatta, 2002) Rodrigo, V.H.L.; Silva, T.U.K.; Kariyawasam, L.S.; Munasinghe, E.S.Item Effect of recovery tapping on yield potential of rubber (Hevea brasiliensis) trees(Rubber Research Institute. Agalawatta, 2001) Silva, T.U.K.; Nugawela, A.; Rodrigo, V.H.L.; Serasinghe, P.