NE48
Soil Profile Morphology:
NE48-50 Landscape
Surface Soil
| A1 | 0-10 cm | Dark brown (7.5YR3/3); sandy loam; weak to moderate coarse to medium blocky structure; firm consistence (dry); very abundant (50-90%) medium quartz rock (5-30 mm); no slaking; pH 4.4; clear change to: |  NE48 Profile |
| A2 | 10-23 cm | Yellowish red (5YR5/6) and pink (7.5YR7/4 dry); sandy loam; weak coarse blocky structure; very firm (dry) consistence; very abundant (50-90%) quartz rock (5-30 mm); pH 4.6; very slight dispersion after remoulding: | |
| Subsoil | |||
| B21 | 23-50 cm | Red (2.5YR5/6); light medium clay; strong coarse to fine polyhedral structure; strong consistence (dry); pH 4.8: | |
| B/C | 50-80 cm | Red (2.5YR4/6); silty clay loam; termites; pH 5: | |
| C | 80 cm | Weathered metamorphic??? rock; slight dispersion after remoulding. | |
| Note: Quartz band from 40 cm. | |||
Key Profile Features:
Soil Profile Characteristics:
Horizon | pH | Salinity Rating | ||
Surface (A1 horizon) | Extremely Acid |  | | |
Subsoil (B2 horizon) | Very Strongly Acid | | | |
Deeper subsoil (at 50-80 cm cm) | Strongly Acid | | | |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | Organic Carbon G/100g | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
meq/100g | |||||||||
A1 | 0-10 | 4.4 | 4.0 | 0.09 | 3.4 | 0.97 | 0.41 | 0.88 | 0.12 |
A2 | 10-23 | 4.6 | 4.2 | <0.05 | | 0.24 | 0.37 | 0.29 | <0.05 |
B21 | 23-50 | 4.8 | 4.1 | <0.05 | | 0.24 | 1.9 | 0.46 | <0.05 |
B/C | 50-80 | 5 | 4.2 | <0.05 | | 0.08 | 1.7 | 0.41 | <0.05 |
C | 80 | | | | | | | | |
Horizon | Horizon Depth (cm) | Exchangeable Aluminium mg/kg | Exchangeable Acidity meq/100g | Field Capacity pF 2.5 | Wilting Point pF 4.2 | Coarse Sand (0.2-2.0 mm) | Fine Sand (0.02-0.2 mm) | Silt (0.002-0.02 mm) | Clay (<0.002 mm) |
A1 | 0-10 | 140 | 12 | 23.0 | 6.9 | 19 | 48 | 10 | 15 |
A2 | 10-23 | 190 | 6.8 | 19.1 | 6.6 | 18 | 51 | 12 | 16 |
B21 | 23-50 | 270 | 9.8 | 27.0 | 15.6 | 11 | 33 | 10 | 42 |
B/C | 50-80 | 240 | 8.4 | 27.2 | 13.7 | | | | |
C | 80 | | | | | | | | |
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