Location: Cann River Flats
Australian Soil Classification: Melanic, Sodic, Eutrophic, Grey DERMOSOL
Map Unit: River flats (rf)
Previous Site Name: EG120
General Landscape Description: Alluvial plain
Site Description: Level plain >1% slope
Land Use: Grazing
Native Vegetation: Riparian forest
Geology: Recent sediments
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EGW120 Landscape
Soil Profile Morphology:
Surface soil | | | |
A11 |
0 – 30 cm |
Very dark grey (10YR3/1); clay loam, high in organic matter; strong medium polyhedral structure; very weak consistence moist; pH 5.6; gradual change to: |
A12 |
30 – 50 cm |
Dark greyish brown (10YR4/2) distinctly mottled with fine common dark brown (7.5YR3/4) mottles; silty clay loam; moderate medium polyhedral structure; weak consistence moist; pH 5.4; gradual change to: |
Subsoil | | | |
B2 |
50 – 70 cm | Brown (10YR5/3) with many medium faint dark greyish brown (10YR4/2) mottles; silty clay; weak to moderate coarse prismatic structure; firm consistence moist ; pH 5.9; diffuse change to: |
Deep subsoil | | | |
D |
70 – 105 cm |
Dark greyish brown (10YR4/2) with common distinct medium brown (7.5YR5/4) mottles; sandy clay loam; weak coarse polyhedral structure; firm consistence moist. |
Sampled by auger
Soil Profile Characteristics:
-
| pH | Salinity | | |
Surface soil
(A11 horizon) | Moderately acid | Very low | Non sodic | None |
Subsoil
(A12 horizon) | Strongly acid | Very low | Non sodic | None1 |
Deep subsoil
(B2 horizon) | Moderately acid | Very low | Non sodic | Slight 2 |
1 Slight dispersion after remoulding. 2 Complete dispersion after remoulding.
Chemical and Physical Analysis:
Horizon | Horizon Depth
(cm) | pH
(water) | pH
(CaCl2) | EC
dS/m | Organic Carbon
% | Total
Nitrogen
% | Exchangeable
Aluminium ppm | 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 cap.
% w/w | Wilt. point
% w/w |
Ca | Mg | K | Na |
meq/100g |
A11 | 0-30 | 5.6 | 4.9 | 0.08 | 2.9 | 0.21 | 14 | 15.0 | 7.5 | 1.4 | 0.17 | 0.24 | 6 | 31 | 30 | 23 | 33.4 | 14.0 |
A12 | 50-70 | 5.4 | 4.7 | 0.09 | | | 48 | 12.0 | 3.3 | 2.4 | 0.12 | 0.28 | 7 | 32 | 34 | 25 | | |
B2 | 70-105 | 5.9 | 5.0 | 0.11 | | | 12 | 8.2 | 2.8 | 4.9 | 0.13 | 0.62 | 7 | 26 | 34 | 31 | | |
Profile Described By: David Rees and Grant Boyle, 2000.