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)
Wasana, H.H.L.; Mudalige, Jayasinghe U.K.; Ikram, S.M.M.; Udugama, J.M.M.; Edirisinghe, J.C.; Herath, H.M.T.K.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)
Weerasekera, N.D.K.; Jayasinghe-Mudalige, U.K.; Ikram, S.M.M.; Udugama, J.M.M.; Herath, H.M.T.K.; Edirisinghe, J.C.; Herath, H.M.L.K.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)