Australian Soil Classification: Vertic (and Bleached-Ferric), Red CHROMOSOL
Soil Profile Morphology:
Surface Soil
Ap | 0-6 cm | Brown (7.5YR4/2); heavy sandy loam; moist consistence; pH 5.6; clear change to: | LWA10 Profile |
A12 | 6-15 cm | Brown (7.5YR4/3); light sandy clay loam; pH 4.6; clear change to: | |
A21 | 15-25 cm | Brown (7.5YR4/4); firm to very firm consistence (dry); very many (50 - 90%) ferro-manganiferous concretions (2 – 8 mm); pH 4.7; gradual change to: | |
A22 | 25-45 cm | Brown (7.5YR5/4) with pink (7.5YR8/3) mottles; very many (80%) ferro-manganiferous concretions; pH 5.5; clear change to: | |
Subsoil | |||
B2 | 45-65 cm | Yellowish red (5YR4/6) with light reddish brown (2.5YR6/4) and reddish brown (2.5YR4/6) mottles; medium clay; moderate coarse (50-100 mm) prismatic, parting to strong medium to fine (5-20 mm) polyhedral structure; firm to very firm consistence (dry); pH 5.9; clear change to: | |
2B2 | 65-80 cm | Brown (10YR5/3) with strong brown (7.5YR5/8) and white (10YR8/1) mottles; light clay (fine sandy); strong consistence (dry); many (40%) ferro-manganiferous nodules (2-5m); slight manganese staining; pH 6.6; clear change to: | |
3B2 | 80-105 cm | Light yellowish brown (2.5Y6/3) with strong brown (7.5YR5/8), greyish brown (2.5Y5/2) and yellowish red (5YR4/6) mottles; heavy clay; strong coarse (50-100 mm) prismatic, parting to strong coarse (20-50 mm), further parting to coarse (20-50 mm) lenticular structure; firm to strong consistence (dry); shiny ped faces; manganese staining common (20%); pH 8.1; gradual change to: | |
4B2 | 105-130+ cm | Light yellowish brown (2.5Y6/3) with yellowish red (5YR5/6) mottles; medium clay; moderate fine (10-20 mm) prismatic structure; firm to very firm consistence (moist); few (5%) manganese staining; few (2%) ferro-manganiferous nodules (5-10 mm); pH 8.6. |
- | pH | Salinity | ||
Surface Soil (A1 horizon) | Moderately Acid | Low | Non-Sodic | None1 |
Subsoil (B2 Horizon) | Moderately Acid | Very Low | Sodic | None |
Deeper Subsoil (108-130 cm) | Strongly Alkaline | Very Low | Strongly Sodic | Strong |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC dS/m | NaCl % | Organic Carbon % | Total Nitrogen % | Exchangeable Acididty meq/100g | Exchangeable Cations | Coarse Sand (0.2-2.0 mm) % | Fine Sand (0.02-0.2 mm) % | Silt (0.002-0.02 mm) % | Clay (<0.002 mm) % | Field Capacity % w/w | Wilting Point % w/w | |||
Ca | Mg | K | Na | |||||||||||||||
meq/100g | ||||||||||||||||||
Ap | 0-6 | 5.6 | 5.4 | 0.29 | 3.0 | 4.4 | 0.19 | 9 | 4.9 | 1.0 | 0.8 | 0.1 | 22 | 42 | 16 | 16 | 24.3 | 7.2 |
A12 | 6-15 | 4.6 | 4.3 | 0.17 | 1.9 | 2.4 | 0.10 | 9 | 1.3 | 0.53 | 0.86 | 0.19 | 24 | 42 | 11 | 19 | 22.6 | 6.2 |
A21 | 15-25 | 4.7 | 4.3 | 0.13 | 8 | 0.68 | 0.36 | 0.71 | 0.21 | 31 | 39 | 12 | 16 | 19.7 | 6.2 | |||
A22 | 25-45 | 5.5 | 5.1 | 0.12 | 6 | 1.6 | 0.68 | 0.58 | 0.29 | 35 | 34 | 12 | 18 | 20.3 | 7.6 | |||
B2 | 45-65 | 5.9 | 5.2 | 0.19 | 13 | 3.9 | 6.5 | 1.4 | 1.8 | 3 | 11 | 7 | 79 | 51.9 | 28.2 | |||
B3 | 65-80 | 6.6 | 5.6 | 0.10 | 4 | 1.6 | 3.6 | 0.70 | 1.5 | 13 | 39 | 16 | 29 | 28.1 | 10.6 | |||
B4 | 80-105 | 8.1 | 6.8 | 0.23 | 5.8 | 13 | 2.3 | 6.8 | 3 | 7 | 4 | 84 | 55.8 | 31.5 | ||||
B5 | 105-130+ | 8.6 | 7.6 | 0.18 | 4.9 | 11 | 1.6 | 5.5 | 12 | 26 | 7 | 51 | 38.5 | 20.6 |