Adikari, A.M.N.; Dissanayake, D.M.P.D.; Herath, H.M.I.K.; Wijebandara, D.M.D.I.; Gajanayake, B.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Dananjaya, M.H.; Herath, H.M.I.K.; Gajanayake, B.; Wijebandara, D.M.D.I.; Pathirana, K.P.A.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Kulasinghe, K.P.N.; Wijebandara, D.M.D.I.; Nugawela, A.; Fernandopulle, M.N.D.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)