Table 2.

Pearson’s correlation matrix of physico-chemical properties and heavy metal contents of soil

	pH	Cond.	Sand	Silt	Clay	SOM	Ca	Mg	Na	K	N	P	CaCO3	Cr	Cu	Cd	Co
Cond.	0.23
Sand	0.03	0.88**
Silt	−0.02	−0.85**	−0.99**
Clay	−0.05	−0.83**	−0.85**	0.79**
SOM	0.62*	0.39	0.32	−0.32	−0.24
Ca	−0.39	0.51	0.44	−0.42	−0.47	−0.08
Mg	0.64*	0.53	0.15	−0.11	−0.34	0.39	0.17
Na	0.33	−0.34	−0.01	−0.04	0.18	0.30	−0.60*	0.89**
K	0.06	−0.71**	−0.38	0.33	0.52	0.01	−0.65*	−0.60*	0.89**
N	0.17	−0.61**	−0.86**	0.88**	0.61*	−0.37	−0.33	0.19	−0.21	0.08
P	0.43	0.90**	0.64*	−0.60*	−0.68*	0.49	0.43	0.72**	−0.42	0.75**	−0.33
CaCO3	−0.92**	−0.38	−0.26	0.25	0.27	−0.77*	0.23	−0.57	−0.40	−0.04	0.12	−0.51
Cr	0.13	0.13	−0.13	0.09	0.28	−0.24	0.00	0.24	−0.43	−0.42	0.30	0.20	0.01
Cu	−0.17	0.66	0.80**	−0.77**	−0.83**	0.43	0.54	0.02	−0.04	−0.30	−0.81**	0.48	−0.13	−0.52
Cd	−0.18	0.14	−0.19	0.20	0.10	−0.49	0.07	0.27	−0.77**	−0.64*	0.33	0.25	0.34	0.69*	−0.35
Co	0.54	−0.23	0.02	−0.05	0.14	0.45	−0.65*	−0.20	0.97**	0.80**	−0.17	−0.25	−0.59*	−0.38	−0.04	−0.73**
Pb	−0.10	−0.54	−0.12	0.08	0.29	−0.02	−0.59*	−0.70*	0.89**	0.93**	−0.20	−0.67*	0.03	−0.49	−0.05	−0.65*	0.77**

* Correlation is significant at the 0.05 level (2-tailed)

** Correlation is significant at the 0.01 level (2-tailed)