Research Symposium-2012

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Browsing Research Symposium-2012 by Subject "Coconut processing technology"

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    Analysis of Diversification Strategies Adopted by Tea Plantations
    (Uva Wellassa University of Sri Lanka, 2012) Madhusankha, B.P.; Mahindarathna, M.G.P.P.
    Sri Lankan plantation crop industry mainly consists of Tea, Rubber and Coconut while tea plays a dominant role in Sri Lankan economy being the plantation crop with extent of 80,185 ha. Plantation crop industries have been listed under 23 Regional Plantation Companies. In a new competitive era, organizations try to improve its performance by applying different strategies namely crop diversification strategies and non-crop diversification strategies. Crop diversification strategies would be diversification out of core crop strategies while non crop diversification seems to be focused on core crop to utilize under - utilized resources to gain maximum efficiency out of them or diversification with non-related business activities (Daud et al, 2009). Ultimately, these strategies are applying to boost the performance and stay competitive in the market. But the question here is whether these crop diversification strategies and operations are really improves the company performance. If yes what will be the optimal level which will maximize the performance of the company? Hence, the main objective of the study is to evaluate the effectiveness of the diversification strategies adopted by Kahawatte Plantations PLC in different perspectives. Other objectives include identification of the impact and relationship of diversification strategies on the performance of the listed diversified estates comes under Kahawatte Plantations Company and determination of the optimum level of crop diversification which maximizes performance of listed diversified estates of Kahawatte Plantations Company.
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    Comparison of Two Species of Ascid Mites as a Food Source for Heoseiulus Bairiki: A Predatory Mite of Coconut Mite, Aceria guerreronis
    (Uva Wellassa University of Sri Lanka, 2012) Kaushala, E.A.N.; Aratchige, N.S,; Wijayaratne, D. K. W.
    Coconut mite, Acei’ia guerreronis Keifer (Acari: Erioph yidae), is a major pest of coconut fruits (Cocos nucifera L..) (Lawson—Balagbo et a!., 2008) causing 30-60% loss of production (Nair, 2002). Coconut mite is difficult to control due to its hidden habitat under the perianth and tall stature of the coconut free. Chemical control is impractical, uneconomical, and environmentally not sounds (Navia el at., 2012). Release of the predatory mite Neoseinlus barai‹i at 3-4 month intervals at 5000 mites per palm for at least a quarter of the plantation is recommended. For tft is, mass production of N. baraI‹i is necessary. Tyrophagiis pulrescenliae is used as the food source for N. baraki. A new Tyrophagiisp. which can be a host for N. baraki has also been observed, but the efficacy of this new species has not been evaluated. There Fore the objectives of this study were to compare the oviposition, developmental times, longevity and sex ratio of N.baraki on r. pulrcscenliac and new Tyropha$us sp. and to quantify the mass production of N.baraki on the two Tyrophagus sp.
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    Development and Leaf Area Consumption Rate of Two-Color Coconut Leaf Beetle PIesispa reichei OH Selected Coconut Leaf Stages
    (Uva Wellassa University of Sri Lanka, 2012) Bentharage, B.D.C.D.; Aratchige, N.S; Suwadarathna, N.I.; Wijayarstne, L.K.W .
    Plesispa beetle (Plesispo reichei Chapuis) (Coleoptera: Chrysomelidae) is an important pest of coconut in Sri Lanka. This pest was first reported in 1991 From Gampaha district and is believed to have been accidentally introduced to Sri Lanka (Anon, \ 999). Plesispa reichei mainly infests coconut seedlings. Seldom infestations on mature coconut palms could occur. Little information is available on the biology and feeding habit of this insect species. The objectives of this study were to determine the egg production, incubation period, egg hstchability and developmental times of larval instars of P. re/r /Tel on selected leaf stages under room temperature, and to determine the most suitable coconut lead stsge For the mass rearing of larvae and adults of Plesispa reichei under laboratory conditions.