Fig. 4From: Evidences towards deciphering the mode of action of dimethylpyrazole-based nitrification inhibitors in soil and pure cultures of Nitrosomonas europaeaSoil DMP (a), NH4+ (b) and NO3− (c) content after 8 days of fertilizer application. Sterile and non-sterile soils were fertilized with ammonium sulphate (AS) and AS + DMPSA. Different letters indicate significant differences using one-way ANOVA followed by Duncan’s post hoc test (p < 0.01; n = 4)Back to article page