The soil was collected from a crop field in Wólka Wojsławska, Zduńska Wola district, Łódź voivodship, Central Poland (51°38′45.169″N, 18°56′14.582″E). The soil was obtained using a manual composite technique in which soil samples were taken from random sites within the area, and then, six to eight subsamples were mixed thoroughly in the laboratory.
The C, N and S concentrations were analyzed using an Elementar Vario MAX cube CNS analyzer. The total concentration of the macroelements Na, Mg, Ca, K, P, Na and of the heavy metals Fe, Mn, Ni, Cr, Zn, Pb, Cd were assessed using the ICP-OES method (atomic emission spectrometry in inductively coupled argon plasma) on an Optima 7300DV system (Perkin-Elmer). The bioavailable forms of phosphorus and potassium were assayed according to Egner-Reihm. The soil reaction was determined potentiometrically either in a suspension of water, or 1 M KCl solution. Note, however, that 1 M KCl simulates the soil solution better than water (Goulding, 2016 (link)). The general physicochemical parameters of the soil are presented inTable 1 .
The C, N and S concentrations were analyzed using an Elementar Vario MAX cube CNS analyzer. The total concentration of the macroelements Na, Mg, Ca, K, P, Na and of the heavy metals Fe, Mn, Ni, Cr, Zn, Pb, Cd were assessed using the ICP-OES method (atomic emission spectrometry in inductively coupled argon plasma) on an Optima 7300DV system (Perkin-Elmer). The bioavailable forms of phosphorus and potassium were assayed according to Egner-Reihm. The soil reaction was determined potentiometrically either in a suspension of water, or 1 M KCl solution. Note, however, that 1 M KCl simulates the soil solution better than water (Goulding, 2016 (link)). The general physicochemical parameters of the soil are presented in