2.5. Bioassays
Germination tests using Lepidium sativum seeds were conducted
on extracts obtained from soil after treatment (CES_T1 to T3,
CWES_T1 to T3 and ES_T1 to T3). The germination index (GI) was
calculated following the usual procedure (Pardo et al., 2011; Soares
et al., 2013). Inhibitory effects of the soil mixture extracts on the
light emission of V. fischeri were measured using a Lumistox 300
equipment. Soil was extracted with aqueous solution of NaCl (2% v/