Renuka, K.A.Senavirathna, W.M.I.2019-10-172019-10-172017Annals of the Sri Lanka Department of Agriculture, 19(2):p.53-59https://dl-doa.nsf.gov.lk/handle/1/1530SoilBig onionNutrient statusSoil fertilityReddish brown earths soilSoil nutrient status of big onion growing areas in Anuradhapura district of Sri LankaArticle