Liyanage, G.L.V.M.; Pathirana, S.P.G.S.; Rankoth, L.M.; Wickramasinghe, H.K.J.P.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Silva, S.P.P.; Nayanakantha, N.M.C.; Seneviratne, P.; Nugawela, A.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)