The glycine-N mineralization rates in the glucose amended treatments
were higher on day 60 than in the Glu0 treatment. Glucose was
used up quickly, as indicated by the decreasing extractable C concentration.
Under these conditions, it is expected that the direct uptake would
be dominant, as microbes had to find other C sources. The microbial biomass
decreased during the second half of the incubation and likely contributed
an additional source of C and N affecting available N and C