Foliar nutrient levels of red maples growing on forest and landscape sites. Standard errors of the means are shown in parentheses (n = 9). Asterisks denote statistical significance of differences in site type means for each soil property.
| Nutrient | Forest | Landscape | Sufficiencyz | ||
|---|---|---|---|---|---|
| N (%) | 1.74 | (0.04) | 1.51 | (0.06)** | 1.60–2.20 |
| P (%) | 0.12 | (0.01) | 0.13 | (0.01) | 0.18–0.30 |
| K (%) | 0.85 | (0.06) | 0.81 | (0.04) | 0.50–0.80 |
| Ca (%) | 0.84 | (0.05) | 0.71 | (0.05)* | 2.00–3.00 |
| Mg (%) | 0.21 | (0.01) | 0.20 | (0.01) | 0.26–0.40 |
| S (%) | 0.11 | (0.01) | 0.11 | (0.01) | 0.17–0.30 |
| Zn (ppm) | 35.10 | (2.74) | 34.40 | (2.01) | 20–50 |
| Mn (ppm) | 1086.10 | (122.51) | 816.90 | (97.14)* | 50–200 |
| Cu (ppm) | 7.50 | (0.46) | 8.10 | (1.02) | 6–20 |
| Fe (ppm) | 74.80 | (4.81) | 110.60 | (17.41) | 60–300 |