Evaluation of Soil Quality in Arid Western Fringes of the Nile Delta for Sustainable Agriculture

Table 5

Proportion of variance using varimax rotation and communality estimates for soil and terrain indicators for each of the retained factors.

Indicator	Factor 1	Factor 2	Factor 3	Factor 4	Factor 5	Communality estimates
Sand	−0.99	−0.02	0.01	−0.01	−0.03	0.99
Silt	0.74	0.02	0.00	0.05	−0.05	0.55
Clay	0.95	0.01	−0.01	−0.01	0.07	0.91
pH	−0.74	0.35	0.04	0.10	−0.22	0.74
EC	0.17	0.13	0.05	−0.07	0.81	0.71
OM	−0.09	0.92	0.03	0.09	−0.08	0.87
ESP	0.00	−0.23	−0.09	−0.02	0.79	0.68
CEC	0.03	0.55	−0.03	0.67	0.07	0.75
CaCO3	-0.08	0.03	−0.05	0.88	0.04	0.78
FC	0.97	0.09	−0.01	-0.01	0.05	0.96
AWHC	0.98	0.13	0.00	0.02	0.00	0.97
BD	0.85	−0.47	-0.04	0.00	0.10	0.95
PD	0.95	−0.23	−0.02	−0.01	0.09	0.96
Slp	−0.02	−0.07	0.88	0.02	−0.02	0.78
Rlf	−0.03	0.09	0.85	0.06	−0.02	0.73
TWI	−0.07	0.01	−0.17	−0.45	0.21	0.28