Whereas the proportion of bacterivorous Acari was increased 15% (mT) in OM1, 27.8% (mT) in OM2 and 22.1% (mT) in NPK2, and that of hemiedaphic (from 10.6% to 16.6%) (mT) and epedaphic (from 6.3% to 12.8%) (mT) Collembola was elevated by OM and NPK fertilizers (Table 3)