Rodrigo, V.H.L.Herath, P.H.M.U.Nugawela, A.2012-06-252012-06-251993Journal of the Rubber Research Institute of Sri Lanka73pp.1-19https://dl.nsf.gov.lk/handle/1/8944Use of rainguards can minimize the loss of tappping days and hence the loss in rubber crop. A simple model was developed to study different components determinig the profitability of using rainguard is discussed. Price of rubber, yield potential of a plant and tapping wage rate were identified as most important factors which determine the worthiness of the use of rainguards. Sealent price is also a major factor in deciding profitability. If the price of scalent is less than Rs. 20/= per kg, the profilability from both the apron and the gutter types is sameIndustriesTappingMathematical modelFinacial analysisYieldProfitabilityRubber industryArticle