Vertical leaching of water-soluble organic matter from the upper horizons of sod-podzolic soil and leached chernozem

Abstract

The descending water flux of organic matter from the arable and subarable horizons of sod-podzolic soil and leached chernozem has been under study by lysimetric methods. Total carbon losses reached 48.6-58.1 kg/ha/year. According to the data obtained by gel-chromatography and by gas chromatography-mass spectrometry methods, organic substances are migrating as rather simple compounds with molecular weights not surpassing 500.