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 0–10 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) | 3.5 | 3.9 | 4.3 | 4.2 | 4.1 | 4.7 | 6.0 | 4.9 | N. d. |
pH (H2O 1:2.5) | 4.6 | 5.0 | 5.5 | 5.4 | 5.2 | 5.8 | 6.5 | 5.9 | ±0.1 |
CEC (cmolc kg−1) | 20 | 24 | 30 | 23 | 26 | 20 | 28 | 27 | ±4.6 |
Ca2+ (cmolc kg−1) | 3.3 | 1.0 | 6.0 | 5.5 | 5.2 | 7.0 | 21.8 | 22.0 | ±0.6 |
Mg2+ (cmolc kg−1) | 0.5 | 0.4 | 1.8 | 0.8 | 1.2 | 0.6 | 0.8 | 0.6 | ±0.2 |
K+ (cmolc kg−1) | 0.5 | 0.2 | 0.3 | 0.2 | 0.3 | 0.4 | 0.4 | 0.4 | ±0.1 |
Base saturation (%) | 22 | 6.7 | 27 | 28 | 26 | 40 | 83 | 85 | ±2.8 |
SOM (%) | 17 | 12 | 17 | 11 | 16 | 12 | 14 | 11 | ±3.5 |
SOC (mg C g−1) | 98 | 70 | 100 | 65 | 90 | 72 | 82 | 65 | ±20.1 |
Ntotal (mg N g−1) | 4.9 | 3.8 | 5.0 | 2.8 | 4.3 | 4.6 | 5.0 | 3.7 | ±0.8 |
C/N | 20 | 18 | 20 | 23 | 20 | 16 | 16 | 18 | ±2.4 |
Available P (mg P kg−1) | 21 | 8 | 18 | 18 | 11 | 10 | 6 | 9 | ±7.3 |
Available Ca (mg Ca kg−1) | 430 | 700 | 1400 | 593 | 740 | 885 | 4171 | 2980 | N. d. |
Available K (mg K kg−1) | 166 | 100 | 145 | 131 | 150 | 50 | 165 | 125 | N. d. |