Madurapperuma, W.S.2014-06-032014-06-031999M Phil. thesis submitted to the Postgraduate Institute of Agriculture, Peradeniya, Sri Lanka:p...https://dl-cri.nsf.gov.lk//handle/1/3747Soils and Plant NutritionNutrient statusHighland soilsLowland soilsAB-DTPA multi ionic extractantPotential of using AB-DTPA multi-ionic extractant to determine available nutrient status of highland and lowland soils of Sri Lanka