Wijesinghe, M.A.K.Pathirana, G.Vijitha Mallika, W.K.2021-09-132021-09-132006ASDA-Annals of the Sri Lanka Department of Agriculture, 8:p.401https://dl.nsf.gov.lk/handle/1/25266AgricultureOrganic farmingBio-fertilizer applicationEarthworm speciesEsienia spp.Vermi compostEarth worms:bio-fertilizer machine for organic agricultureArticle