OTR497
Australian Soil Classification: Humose-Mottled, Melacic, Red Acidic-Sodic, Eutrophic, Yellow KANDOSOL
Northcote Factual Key: Gn2.81
General Landscape Description: Low Hills, Hills
Site Description: Mid Slope Slope: 18% Aspect: East
Native Vegetation: E. sideroxylon, A. verticillatta
Geology: Tpb: Neogene (Tertiary) fluvial sediments; gravel, sand, silt (Brighton Group) [Tae: Paleogene (Tertiary) fluvial sediments; gravel, sand, clay, brown coal. (Eastern View Formation)].
Soil Profile Morphology:
Surface Soil
| A1 | 0-10 cm | Very dark greyish brown (10YR3/2); fine sandy loam; single grain structure; a few; pH 4.5; clear change to: |  |
| A2 | 10-20 cm | Brown (10YR5/3); fine sandy loam; apedal, single grain structure; pH 4.7; gradual change to: | |
| A3 | 20-30 cm | Yellowish brown (10YR5/4); fine sandy clay loam; weak fine subangular blocky structure; pH 4.9; diffuse change to: | |
| Subsoil | |||
| B2 | 30-90 cm | Brownish yellow (10YR6/6) to light yellowish brown (10YR6/4); light clay; weak fine to very fine subangular blocky structure; a few ferruginous nodules; pH 5.3; diffuse irregular change to: | |
| C | 90+ cm | Yellow; sandy clay; apedal, single grain structure. | |
| | | |
Soil Profile Characteristics:
| Salinity Rating | ||
Surface (A1 horizon) | Very Strongly Acid | Very Low | Non Sodic |
Subsoil (B2 horizon) | Strongly Acid | High | Strongly Sodic |
|
| The surface is very strongly acid. The subsoil is strongly acid. | | The salinity rating in the A horizons is very low. The subsoil has a high salinity rating. | | The A horizons are non-sodic. The subsoil is strongly sodic. | | The clay content is very low in the surface, and moderate at depth. |
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 | 4.5 | 0.037 | 0.015 | 1.4 | 0.004 | 5 | 120 | 0.3 | 5.4 | 1.9 | 0.3 | 0.1 | 7.7 | 10.8 | 18.5 |
A2 | 10-20 | 4.7 | 0.032 | 0.019 | 1.3 | 0.002 | 3 | 80 | 0.3 | 1.6 | 0.9 | 0.2 | 0.07 | 2.77 | 4.73 | 7.5 |
A3 | 20-30 | 4.9 | 0.083 | 0.017 | 1.1 | 0.007 | 2 | 60 | 1.1 | 0.6 | 1.7 | 0.1 | 0.2 | 2.6 | 2.9 | 5.5 |
B2 | 80 - 90 | 5.3 | 0.510 | 0.047 | 0.7 | 0.064 | 2 | 40 | 1.9 | 0.4 | 3.5 | 0.1 | 1.2 | 5.6 | 0.8 | 6.4 |
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 | 4 | 19 | 52 | 20 | 4 |
A2 | 10-20 | 2 | 14 | 53 | 25 | 7 |
A3 | 20-30 | 3 | 10 | 50 | 24 | 16 |
B2 | 80 - 90 | <1 | 5 | 44 | 24 | 25 |
Profile Described By: Andrew Thornley, 21st August 1969.
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