Research Article
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 |
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