4.Journals Published in Sri Lanka
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Item Harvesting coconuts at monthly intervals will provide large scale benefits(Coconut Research Institute. Lunuwila, 1994) Mathes, D.T.Item The sulphur nutrition of coconut(CRI. Lunuwila, 1985) De Silva, M.A.T.; Anthonypillai, G.M.; Mathes, D.T.Item The impact of harvesting coconuts at monthly intervals(CRI. Lunuwila, 2004) Mathes, D.T.; Marikkar,J.M.NItem Effect of different control methods of Imperata Cylindrica on coconut (cocos nucifera)yield in low country dry zone of Sri Lanka(CRI. Lunuwila, 2004) Samarajeewa, A.D.; Senaratna, R.P.B.S.H.S.; Perera, K.C.P.Item Assessment of the effects of environmental factors on yield of coconut (Cocos nucifera L.)(Coconut Research Institute of Sri Lanka. Lunuwila, 1997) Peiris, T.S.G.; Thattil, R.O.The long term nut yield data and climate data of eight variables (1976-1992) were analyzed to understand the effects of climate and weather on the yield variability between picks. The yield variation over the years had no systematic pattern. The order of contribution of the picks to total yield is not significantly consistent between years. Explanatory models were developed at monthly lag periods prior to harvest of each pick. The most and least influential picks in respect of climate variability are picks 5 and 2 respectively. The critical period with respect to climate and weather variability of picks 1-6 are February , June July, Septermber, December and February respectively. The climatic models fitted at these periods explain the yield variability between picks. The influence of climatic variables during these periods vary from pick to pick. Maximum air temperature and relative humidity in the afternoon are the two most significant environmental variables influencing yield irrespective of picks.