Pathirana, M.G.S.P.Sooriarachchi, A.T.Weerakoon, W.M.W.Hettiarachchi, B.I.Jayasinghe, D.G.K.D.P.Wickramasinghe, M.I.Jang, B.Y.C.2021-09-012021-09-012015Annals of the Sri Lanka Department of Agriculture, 17:p.369https://dl-doa.nsf.gov.lk/handle/1/3388Socio EconomicsBig onionTrue seedSeed productionRain sheltersEconomic analysis of true seed production of big onion under permanent rain sheltersArticle