Senanayake, S.R.H.L.K.; Kodithuwakku, K.A.H.T.; Wickramasinghe, H.K.J.P.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
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)
Wickramasinghe, H.K.J.P.; Kodithuwakku, K.A.H.T.; Jayasooriya, A.P.; Prathapasinghe, G.A.(Senate Research and Higher Degrees Committee, Wayamba University of Sri Lanka, 2017)
Senanayake, S.M.S.D.; Karunarathne, K.H.M.I.; Wickramasinghe, H.K.J.P.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)