Soil sampling was
(20 g) was wetted to reach 60% of water holding capacity, and incubated at 28 8C for 7 days
in anairtight jar containing a vial with 2 ml of 1 M NaOH. Every 24 or 48 h the NaOH solution Whereas
the microbial quotient (Cmic:Corg ratio) represented the percentage of microbial carbon with respect to the total organic carbon of soil (Anderson and