Abeyrathna, K.A.S.L.; Edirisinghe, E.R.S.P.; Wijesinghe, S.A.E.C.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Dulshani, L.A.M.N.; Ranaweera, B.; Karunarathne, K.H.M.I.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)