TABLE 1.
Nutrient composition and pH of growth media at harvest of P. sylvestris seedlingsa
| Treatment | Ntotal (%) | Concn (mg kg−1) of:
|
C (%) | C/N | pHKCl | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| NH4+ | NO3− | P | K+ | Ca2+ | Mg2+ | |||||
| None (control) | 0.1 ± 0.002 c | 5.1 ± 0.58 a | 9.9 ± 0.18 a | 16.1 ± 0.35 a | 51.0 ± 0.49 a | 64.0 ± 0.2 c | 20.9 ± 0.35 c | 1.2 ± 0.02 c | 11.6 ± 0.03 c | 6.1 ± 0.03 b |
| Pine litter | 0.2 ± 0.004 b | 5.0 ± 0.75 a | 10.0 ± 0.58 a | 10.1 ± 0.78 b | 39.0 ± 0.87 b | 76.1 ± 0.64 b | 23.0 ± 0.35 b | 3.0 ± 0.06 b | 14.7 ± 0.01 b | 5.8 ± 0.02 c |
| Oak litter | 0.25 ± 0.01 a (0.0001) | 5.1 ± 0.64 a (0.997) | 9.1 ± 0.67 a (0.443) | 15.1 ± 0.52 a (0.001) | 49.2 ± 0.55 a (0.0001) | 93.1 ± 0.78 a (0.0001) | 25.1 ± 0.64 a (0.0021) | 4.5 ± 0.12 a (0.0001) | 17.8 ± 0.04 a (0.0001) | 6.3 ± 0.03 a (0.0001) |
a
Values are means ± standard errors (n = 3). Within a column, values with different letters are significantly different (P < 0.05; Tukey's test). P values are given in parentheses.