4.Journals Published in Sri Lanka
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Item Deep planting for better performance(Rubber Research Institute. Agalawatte, 1996) Seneviratne, P.; Nugawela, A.; Samarakoon, S.M.A.Item Uniform and early sprouting of young buddings and budded stumps of rubber(Rubber Research Institute. Agalawatte, 1996) Seneviratne, P.; Nugawela, A.; Amaratunga, K.A.G.B.; Samarakoon, S.M.A.Item Scientists arm the rubber plant to successfully conquer the 300 M elevation barrier(Rubber Research Institute of Sri Lanka. Agalawatta, 2009) Nugawela, A.Item The tree-to-tree variation in rubber plantations(Rubber Research Institute. Agalawatta, 1998) Seneviratne, P.; Nugawela, A.; Jayatilake, P.M.Item Factors affecting the budgrafting success and the scion growth of young budding of Hevea(Rubber Research Institute. Agalawatta, 1994) Seneviratne, P.; Nugawela, A.; Samarakoon, S.M.A.The size of the bag in which the stock plant is grown seems to have an effect on the growth of the seedling; from the three bag sizes tested, ie 15 x33 cm, 18 x 38 cm, 23 x 45 cm, it was found that the diameter the number of leaf whorls of the seedling increased with the increase of the bag size.Though the differences are not statistically significant, the budding success too increased in the same pattern. There was no effect of the bag size on the growth of the scion. The two types of buds, axillary scale, showed no difference either on bud grafting success or on the growth of the scion. The growth stage of the top most leaf whorl of the stock plant, either mature or immature, had no effect on the peeling qualities budgrafting success though a little higher budgrafting success was seen when the top flush was immature. There was an effect of the snag, on the scion growth; when the snag was shorter the sprouting took place earlier but, the scion growth was slightly poor as was evident by the diameter the length of the scion. Long snags delayed the sprouting , but the scion growth was better. The best growth of the scion was obtained when the snag was long with a few leaves attached to it.Item The role of snag on the growth of scion in bud grafted plants of Hevea with special reference to young buddings(Rubber Research Institute of Sri Lanka. Agalawatte, 1995) Senaviratne, P.; Nugawela, A.; Samarakoon, S.M.A.Item The correlation between branching and the tree growth of Hevea brasiliensis (Muell.Arg.)(Rubber Research Institute of Sri Lanka. Agalawatte, 1996) Seneviratne, P.; Nugawela, A.; Ramawickrama, D.The main objective of the present study was to see whether there is a correlation between the number of branches and the tree grwoth in hevea brasiliensis. Considerable variation in brancing habits is observed among the trees of different clones. Also, some clones such as RRIC 121 show less brancing when compared to other clones such as RRIC 100 indicating brancing is also a clonal characteristic. Canopy architecture too, shows differences among trees within a clone. Highly significant positive correlation was observed between the number of branches and the tree girth for all clones tested for trees aged from one year to seven years. The correlation between the canopy distribution (grouped as very good, good or poor) and the tree girth was also positive.Item The effect of girth at opening on yield and growth of modern Hevea brasiliensis Muell Arg. clones(Rubber Research Institute. Agalawatta, 2002) Nugawela, A.; Samarasekera, R.K.; Wilbert, S.