4.Journals Published in Sri Lanka
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Item Production of tomato hybrids for dry zone conditions of Sri Lanka using combining ability analysis, heterosis and DNA testing procedures(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2004) Weerasinghe, O.R.; Perera, A.L.T.; De Costa, W.A.J.M.; Jinadase, D.M.; Vishnukanthasingham, R.Item Productivity of intercropped maize (Zea mays) and varieties of yard -long bean (Vigna unguiculata) as affected by planting time(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1996) Ranasinghe, R.A.D.T.K.; De Costa, W.A.J.M.; Sangakkara, U.R.Item Effects of irrigation at different growth stages on yield components and yield of Soybean (Glycine max(L.) Merr.) grown in the low country dry zone of Sri Lanka(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1996) Shunmugathasan, K.N.; De Costa, W.A.J.M.; Joseph, K.D.S.MItem Varietal variation in growth, physiology and yield of sugarcane under two contrasting water regimes(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2004) De Silva, A.L.C.; De Costa, W.A.J.M.Item Evaluation of different genotypes of tomato under well watered and water stressed conditions on the basis of yield and some selected physiological parameters(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2003) Weerasinghe, O.R.; De Costa, W.A.J.M.; Perera, A.L.T.Item Effect of soil moisture stress at selected stages of growth on the net photosynthetic rate and stomatal resistance and their impact on the yield of chilli (capsicum annuum L.)(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2000) Mahendran, S.; Bandara, D.C.; De Costa, W.A.J.M.Item Physiological responses for moisture stress and development of an index for screening coconut (Cocos nucifera L.) genotypes for drought tolerance(Faculty of Agriculture-University of Ruhuna. Kamburupitiya, 2006) Lakmini. W.G.D.; Nainanayake, N.P.A.D.; De Costa, W.A.J.M.Item Factors responsible for productivity of food legumes. findings of a farmer survey in the Kurunegala district, Sri Lanka(Faculty of Agriculture, University of Ruhuna. Kamburupitiya, 1998) Hettiarachchi, M.P.; De Costa, W.A.J.M.; Jayasekera, S.J.B.A.Item Varietal variation in stmatal conductance, transpiration and photosynthesis of commercial sugarcane varieties under two con-trasting water regimes(University of Ruhuna. Matara, 2009) De Silva, A.L.C.; De Costa, W.A.J.M.