Nitrogen Mineralization And Carbon Dynamic In Soil Affected By Biogas Residues

Summary

The aims of the study were to investigate the N mineralization potential and C status in the incubation experiment after application of digestates (solid and liquid) to the soil, and to compare with the impact of manures (solid and liquid). Biogas residues and manures were collected from three random bioenergy production systems, using cattle manure as the main substrate, and other substrates are residues from sugar and oil industry, corn and wheat silage, etc. The results show that all applied digestates and liquid manure increased NH4–N and NO3–N in soil at the beginning of the incubation. However, at the end of the 56 days of incubation, except two liquid digestates, studied organic materials led to immobilization of mineral N in soil.