Assessment of soil quality for agricultural purposes around the Barapukuria coal mining industrial area, Bangladesh: insights from chemical and multivariate statistical analysis

Environmental Systems Research

Table 4 Factor loading obtained with unrotated factor Matrix

Variables	Factor 1	Factor 2	Factor 3
pH	− 0.734044	*0.575550*	− 0.003379
Total Nitrogen	*0.758232*	0.222330	0.107436
OM	*0.871169*	*0.729553*	− 0.084570
K	0.497128	*0.620121*	− 0.322719
P	0.229370	0.062053	0.109550
S	0.152452	− 0.394920	0.1397270
Fe	0.005454	*0.611775*	− 0.121557
As	− 0.068721	− 0.546154	0.390191
Cu	− 0.084452	*0.514229*	− 0.620729
Ni	0.026929	0.389459	− 0.539698
Total Alkalinity(as CaCO₃)	− 0.764570	*0.570653*	− 0.027939

Bolditalic indicates strong positive loadings and Italic shows strong negative loadings