Quantification of the effects of various soil fumigation treatments on nitrogen mineralization and nitrification in laboratory incubation and field studies

► Pic significantly increased soil mineral nitrogen during the first 2 weeks. ► All four fumigants retarded nitrification in both lab and field studies. ► Pic has a stronger inhibitory effect on nitrification compared to other fumigants. ► An S-shaped function described the NO3--N concentrations in lab incubation samples.