Table 1.

Experimental soil characteristics

Parameter	Valuea	Units
Soil type	Sandy loam
pH	7.74 ± 0.17a
Relative humidity	50 to 60	%
Nitrogen	0.14 ± 0.003a	%
E/C	103 ± 0.023a	mili/S
Cadmium	1.27 ± 0.014a	mg/kg
Copper	12.2 ± 0.021a	mg/kg