2. Materials and methods
The microcosm experiment described in this paper is part of a tiered
experimental plan (Gruiz et al., 2015) targeting the evaluation of
the studied biochars prior to field application. A number of thirteen biochars
from different organic waste feedstocks have been pre-screened
(Feigl et al., 2015) and three biochars were selected for the laboratory
microcosm experiment. The soil microcosms were monitored by an integrated
methodology including physico-chemical methods, biological
analysis and ecotoxicity testing.