Organic matter transformation in soils

Research paper by M. K. Sinha

Indexed on: 01 Oct '72Published on: 01 Oct '72Published in: Plant and soil


Results of organic matter fractionation and qualitative analysis of organic substances amended with C14-tagged oat roots and incubated under aerobic and anaerobic conditions suggest that fulvic acids and low molecular weight organic compounds are formed and accumulate to a greater extent under submerged soil conditions. The results suggest that plant and microbial polyphenols and lignin decomposition products condense with amino acids during the formation of humic substances. It is proposed that complete breakdown of lignins and tannin-like substances is not an essential prerequisite for the formation of humus.