The No Observed Effect Concentration (NOEC) is the test concentration immediately below the LOEC which, when compared with the control, has no statistically significant effect (p ≤ 0,05), within a given exposure period.
description détaillée lorsque l'on utilise un sol naturel (origine, histoire, distribution de tailles de particules, pH, teneur en matières organiques, et, le cas échéant, classification du sol);