Wijebandara, D.M.D.I.Somasiri, L.L.W.2014-06-302014-06-301996Annual Sessions of Sri Lanka Association for the Advancement ofScience, Sri Lanka. Colombo, 1996. 52https://dl-cri.nsf.gov.lk//handle/1/4061enSoilsSoil analysisMineral nutrientsPhospherusCalibrationField experimentsCalibration of methods for soil phosphorus determination by fieldexperimentArticle