Decomposition Rate of Organic Residues and Soil Organisms’ Abundance in a Subtropical Pyrus pyrifolia Field

The use of mulching, compost, and their interaction on organic residue (OR) decomposition rate (k), time decay, primming effect, soil organisms’ community composition was tested in a 16-year P. pyrifolia field experiment conducted from January 2020 to June 2021. A 2 × factorial design used with compost mulching as the two factors within four blocks. OR characterized by using litter bags different mesh, organisms were identified at family level. half-decay (hd), total-decay (td), remaining mass (Rm) varied among management mesh-type. highest values k effect found 15 mm2 size containing plots that received compost. For abundance richness, plot both observed results suggested determined matter decomposition, richness an Acrisols Southern Brazil. Soil main contributing data variance (e.g., Acaridae, Blattidae, Chrysopidae, Halictophagidae, Forficulidae).