The result of the Kaiser Meyer Olkin (KMO) measure of sampling adequacy and Bartlett's sphericity test during the PCA gave a value 0.613. The eigenvalue greater than 1 was considered for the number of components that study the variation and resulted in three components from nine variables which contributes 65.71% of the total variance. According to factor loading, PC1, PC2, and PC3 explained 34.15, 19.71, and 11.84% of the total variance, respectively (Table 3).
Rotated component matrix
| Rotated component matrix . | |||
|---|---|---|---|
| . | Component . | ||
| Attributes . | 1 . | 2 . | 3 . |
| Bi | 0.318 | 0.841 | 0.171 |
| Ci | 0.528 | 0.754 | 0.086 |
| S | 0.931 | 0.220 | 0.118 |
| Ksp | –0.917 | –0.068 | –0.129 |
| Moisture | –0.258 | 0.118 | –0.173 |
| Bulk | 0.092 | –0.438 | 0.582 |
| Sand | –0.087 | –0.115 | –0.703 |
| Clay | 0.181 | 0.096 | 0.805 |
| SOM | –0.292 | 0.693 | –0.096 |
| Eigenvalue | 3.074 | 1.774 | 1.066 |
| % of variance | 34.158 | 19.708 | 11.843 |
| Cumulative % | 34.158 | 53.866 | 65.709 |
| Rotated component matrix . | |||
|---|---|---|---|
| . | Component . | ||
| Attributes . | 1 . | 2 . | 3 . |
| Bi | 0.318 | 0.841 | 0.171 |
| Ci | 0.528 | 0.754 | 0.086 |
| S | 0.931 | 0.220 | 0.118 |
| Ksp | –0.917 | –0.068 | –0.129 |
| Moisture | –0.258 | 0.118 | –0.173 |
| Bulk | 0.092 | –0.438 | 0.582 |
| Sand | –0.087 | –0.115 | –0.703 |
| Clay | 0.181 | 0.096 | 0.805 |
| SOM | –0.292 | 0.693 | –0.096 |
| Eigenvalue | 3.074 | 1.774 | 1.066 |
| % of variance | 34.158 | 19.708 | 11.843 |
| Cumulative % | 34.158 | 53.866 | 65.709 |