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Table V
Group CV’s (coefficient of variation, %) of the 2nd, 3rd, 4thand 5th soil ring test by Forest soil coordinating centre (FSCC), afterelimination of the outliers (after Cools et al.,).
| 2nd FSCC RT | 3rd FSCC RT | 4th FCSCC RT | 5th FSCC RT | |
|---|---|---|---|---|
| Group 1: Particle size distribution | NA | 53 | 37 | 23 |
| Group 2: pH | 3.25 | 3.5 | 3.1 | 3.2 |
| Group 3: Carbonate content | NA | 206 | 129 | 45 |
| Group 4: Organic carton | 41.5 | l8 | 13 | 16 |
| Group 5: Total N | 25 | 17 | 27 | 17 |
| Group 6: Exchangeable cations | 52 | 71 | 54 | 49 |
| Group 7: Aqua regia extractable elements | 35 | 47 | 33 | 26 |
| Group 8: Total elements | 21 | 9 | ||
| Group 9 : Acid Oxalate extractable Fe & Al | NA | 44 | 12 | 20 |