The reproducibility of composting was evaluated calculating the
mean, the standard deviation (mean ± SD) and the coefficient of
variation (CV, in %) for the six composting replicates of composting
parameters and analytical characteristics of the initial mixture, and
the composts sampled after 13, 41 and 83 days of composting. The
composting parameters included the following: the highest temperature
reached by self-heating, the evolution of moisture content,
the losses in dry matter, the total organic C (TOC) and the
total organic matter (TOM). The analytical characteristics assessed
for variability were as follows: the organic matter, N and C contents,
the biochemical fractions and the amount of CO2 mineralised
during 91-day soil incubation.