Estimation of soil organic carbon (SOC) is indispensable
in studies involving soils and global climate change. SOC retention in soil is a function of climate, vegetation and intrinsic soil properties. Historically, SOC estimates are based on wet digestion which gives low carbon recovery. This results in underestimation of its density and stock, however, most of the existing historical and current SOC data sets are based on wet digestion. Hence, we have compared the wet digestion
with precise oxidative combustion method for SOC estimation, to develop factors for conversion of historical data into comparable values.