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Component matrix for variables (n = 320)
| Variables | PCA 1 | PCA 2 |
|---|---|---|
| C-organic | −0.302962 | 0.600437 |
| Sand | −0.900261 | −0.412847 |
| Silt | 0.717161 | 0.248886 |
| Clay | 0.692006 | 0.397191 |
| Total zinc | −0.184748 | 0.122350 |
| Zn (CaCl2) | −0.497301 | 0.546477 |
| Zn (NH4NO3) | −0.571348 | 0.588521 |
| pH | 0.027404 | −0.455902 |
| % Of the total variance | 31.30 | 20.23 |
