Table 5 Temporal evolution of soil parameters after liming (in situ), site of Navasfrías (10–20 cm)
From: Evolution of forest soil properties after liming with a by-product derived from a sugar beet mill
Navasfrías (Spain) | Limed experimental plot (5th/Sept./99) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Soil sample 10–20 cm | |||||||||
Dates | 1st/Dec/99 | 6th/June/00 | 18th/Jan/01 | 20th/June/01 | 27th/Nov/01 | 28th/Oct.02 | 14th/Oct/03 | 17th/March/05 | ±SD |
pH (KCl 1:2.5) | 3.8 | 4.1 | 4.2 | 4.2 | 4.1 | 4.2 | 4.7 | 4.5 | N. d. |
pH (H2O 1:2.5) | 4.8 | 5.0 | 5.3 | 5.3 | 5.3 | 5.3 | 5.8 | 5.6 | ±0.1 |
CEC (cmolc kg−1) | 23 | 21 | 23 | 14 | 22 | 19 | 23 | 27 | ±4.6 |
Ca2+ (cmolc kg−1) | 0.9 | 0.3 | 1.5 | 0.3 | 0.8 | 1.3 | 8.3 | 5.9 | ±0.6 |
Mg2+ (cmolc kg−1) | 0.2 | 0.2 | 0.7 | 0.1 | 0.4 | 0.3 | 0.4 | 0.3 | ±0.2 |
K+ (cmolc kg−1) | 0.4 | 0.1 | 0.2 | 0.1 | 0.2 | 0.2 | 0.3 | 0.2 | ±0.1 |
Base saturation (%) | 6.5 | 2.0 | 10 | 3.6 | 6.4 | 9.5 | 39 | 24 | ±2.8 |
SOM (%) | 12 | 11 | 13 | 3.6 | 10 | 10 | 13 | 10 | ±3.5 |
SOC (mg C g−1) | 67 | 65 | 75 | 21 | 68 | 58 | 77 | 56 | ±20.1 |
Ntotal (mg N g−1) | 3.9 | 3.5 | 4.2 | 1.2 | 4.4 | 3.3 | 3.9 | 3.5 | ±0.8 |
C/N | 17 | 19 | 18 | 18 | 15 | 18 | 20 | 16 | ±2.4 |
Available P (mg P kg−1) | 30 | 2 | 8 | 13 | 6 | 4 | 5 | 7 | ±7.3 |
Available Ca (mg Ca kg−1) | 280 | 425 | 360 | 161 | 245 | 195 | 964 | 843 | N. d. |
Available K (mg K kg−1) | 117 | 70 | 85 | 37 | 80 | 31 | 110 | 83 | N. d. |