Bandara, R.M.U.S.Abeysekara, A.S.K.Herath, H.M.S.Sarathchandra, S.R.Wijesinghe, L.A.D.S.Wickrama, W.M.U.B.Dissanayaka, H.M.M.K.K.H.Dissanayake, D.M.C.B.De Silva, Y.M.S.H.I.U.2019-12-022019-12-022016Annals of the Sri Lanka Department of Agriculture, 18:p.272https://dl-doa.nsf.gov.lk/handle/1/1680Plant ProtectionEnvironmental impact quotient method (EIQ)Rice farmingHerbicidesPesticidesToxicityArticle