Ekanayake, N.R.C.D.B.; Amarasinghe, K.G.A.P.K.; Gajanayake, B.; Ranasinghe, C.S.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Rajapaksha, R.P.K.M.; Suwandharathne, N.I.; Amarasinghe, K.G.A.P.K.; Aratchige, N.S.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)