Rathnayake, W.M.U.K.Sirisena, D.N.Athapattu, A.M.K.B.Herath, H.M.A.B.2021-12-012021-12-012012Annals of the Sri Lanka Department of Agriculture, 14:p.335https://dl-doa.nsf.gov.lk/handle/1/3903Water ManagementRiceIrrigationPaddy LandsPolonnaruwaManagement of Irrigation Water to Improve Productivity of Paddy Lands in the Polonnaruwa District of Sri LankaArticle