Safreen, J.M.; Shanthasiri, J.G.; De Silva, S.N.T.; Fernando, C.A.N.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Chadrasekera, C.M.C.P.; Perera, D.A.M.; Abeysinghe, D.C.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)
Jayawardene, G.M.M.U.; Athauda, A.M.T.P.; Abeynayake, N.R.; Herath, H.M.T.K.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)
Madhushani, R.D.T.D.; Athauda, A.M.T.P.; Wijeyewardena, H.M.S.L.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Amanullah, M.K.M.; Fernanado, M.T.N.; Athauda, A.M.T.P.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)