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)
Ranasinghe, R.A.D.R.A.; Wijesinghe, M.A.K.; Fernandopulle, M.N.D.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2006)
Nayakarathna, N.M.S.K.; Athauda, A.M.T.P.; Abeynayake, N.R.; Anjalee, G.H.I.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)
Sooriyapperuma, S.R.R.; Wijesinghe, M.A.K.; Fernandopulle, M.N.D.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2006)
Rathnasekera, U.S.; Kannangara, K.N.; Perera, P.I.P.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)