Question

Distinguish is immobilization and mineralization of soil nitrogen

Answer 1

Effects of environmental factors and differences in plant constituents on microbial mineralization and immobilization of nitrogen were reasonably called for individual soils by 1935.  

More study of processes traces that ammonium is used by microorganisms, tracers and mathematical equations for measuring and explaining mineralization-immobilization rates.  

Concept of an active-N and passive-N phase was documented and extensive work was conducted to confirm size of biomass-N and active-N fractions fate of fertilizer N and tracing of labelled and unlabelled N compounds inside soil.