Australian Soil Classification: Calcic, Mesonatric, Brown SODOSOL
Humose-Mottled, Melacic, Red KANDOSOL
Northcote Factual Key: GN2.41
General Landscape Description: Hills
Site Description: Hilslope - Lower Slope Slope: 5% Aspect: South-East
Native Vegetation: Woodland; E. viminalis (Manna Gum)
Geology: Qra: Quaternary Alluvium/Colluvium; gravel, sand, silt.
A10 | 0-15 cm | Very dark greyish brown (10YR3/2); fine sandy loam; weak subangular blocky structure;abrupt boundary to: | |
Subsoil | |||
B21 | 15-35 cm | Brown (10YR4/3); heavy clay; strong coarse subangular blocky structure; some ironstone gravel; hard when dry; diffuse boundary to: | |
B22 | 35-70 cm | Yellowish brown (10YR5/4); heavy clay; strong coarse subangular blocky structure; hard when dry; diffuse boundary to: | |
C | 70+ cm | Mottled light yellowish brown (10YR6/4), and yellowish red (5YR5/6); sandy clay; moderate very coarse subangular blocky structure; hard when dry. |
Salinity Rating | |||
Surface (A1 horizon) | Very Strongly Acid | Low | Non-Sodic |
Subsoil (B21 horizon) | Slightly Acid | Medium | Strongly Sodic |
Deeper Subsoil (at 120 cm) | Moderately Alkaline | Low | Strongly Sodic |
The surface is very strongly acid. The upper subsoil is slightly acid. The deeper subsoil is moderately alkaline. | The salinity rating in the surface and deeper subsoil is low. The upper subsoil has a salinity rating of medium. | The surface is non sodic. The subsoil is strongly sodic. | The clay content is very low at the surface, and sharply increases at the A/B interface. |
Horizon | Horizon Depth (cm) | pH (water) | EC dS/m | Cl % | Organic Carbon % | Total N % | P ppm | K ppm | Free Fe % | Exchangeable Cations | Total Bases cmolc/kg | Ex Ac cmolc/kg | CEC cmolc/kg | |||
Ca | Mg | K | Na | |||||||||||||
cmolc/kg | ||||||||||||||||
A1 | 0-10 | 5.3 | 0.076 | 0.011 | 2.0 | 0.16 | 9 | 90 | 1.8 | 3.3 | 1.4 | 0.1 | 0.3 | 5.1 | 2.6 | 10.3 |
A1 | 10-15 | 5.5 | 0.083 | 0.011 | 1.4 | 0.10 | 5 | 70 | 2.1 | 2.6 | 1.3 | 0.1 | 0.4 | 4.4 | 3.3 | 7.6 |
B21 | 20-30 | 6.6 | 0.280 | 0.028 | 1.0 | 0.099 | 3 | 200 | 5.7 | 5.0 | 7.5 | 0.4 | 3.4 | 16.3 | 16.0 | |
B22 | 50-60 | 8.2 | 0.510 | 0.048 | 0.3 | 0.043 | 3 | 220 | 6.2 | 3.6 | 9.1 | 0.3 | 4.1 | 17.1 | 17.5 | |
C | 100-110 | 8.1 | 0.110 | 0.045 | 3 | 140 | 5.8 | 2.5 | 6.8 | 0.4 | 4.1 | 13.8 | 9.4 |
Horizon | Horizon Depth (cm) | Gravel % | 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 | 3 | 30 | 51 | 6 | 9 |
A1 | 10-15 | 3 | 31 | 50 | 6 | 10 |
B21 | 20-30 | 1 | 15 | 22 | 2 | 59 |
B22 | 50-60 | 6 | 13 | 13 | <1 | 67 |
C | 100-110 | 1 | 23 | 23 | 1 | 50 |