Plot: DPI Rutherglen Centre Paddock | Location: Rutherglen |
Australian Soil Classification: Bleached-Sodic, Eutrophic, Red CHROMOSOL | Site Description: Hardsetting surface |
Geology: Quaternary aeolian and alluvial deposits |
ESAS3 landscape |
A1 | 0-5 cm | Brown (10YR4/3); fine sandy loam; granular structure associated with rocks; firm consistence (dry); pH 6.2; clear change to: | ESAS3 profile |
A2 | 50-20 cm | Light yellowish brown (10YR6/4 moist) conspicuously bleached (10YR8/1 dry); with light yellowish brown (10YR6/4 dry) mottles; fine sandy loam; massive; very firm consistence (dry); with many 30% ferromanganiferous nodules (2-10 mm); pH 5.1; abrupt and wavy change to: | |
Note: The bleached A2 horizon can be up to 40 cm deep in places. There is also occasionally a transitional B1 horizon that is heavy fine sandy clay loam in texture – light yellow brown (10YR5/4) with brownish yellow (10YR 6/6) and red (2.5YR 4/6) mottles. | |||
Subsoil | |||
B21 | 20-40 cm | Yellowish red (5YR4/6) with reddish yellow (7.5YR6/6) mottles in some areas; light medium clay; moderate to strong medium to very fine (2-20 mm) polyhedral structure; strong consistence (dry); pH 5.7; gradual change to: | |
B22 | 40-55 cm | Brownish yellow (10YR6/6) with yellowish red (5YR4/6) mottles common (10-20%); light medium clay; moderate coarse (20-50 mm) subangular blocky, parting to moderate to strong medium to very fine (2-20 mm) polyhedral structure; strong consistence (very slightly moist); pH 6.0; clear change to: | |
B23 | 55-90 cm | Reddish brown (2.5YR5/3) with many (30%) brownish yellow slightly diffuse (10YR6/6) mottles; medium heavy clay; weak very coarse (>50 mm) subangular blocky structure; very strong consistence (slightly moist); few (5-10%) soft and semi hard manganese nodules; fine shiny ped faces; pH 7.4; gradual change to: | |
B24 | 90-130+ cm | Light reddish brown (2.5YR6/4); medium heavy clay; moderate very coarse (>100 mm) prismatic, parting to weak to moderate very coarse (>50 mm) subangular blocky structure; very strong consistence (slightly moist); few (5%) soft to semi hard calcareous (?) and very few (2%) ferromanganiferous (2-5 mm) nodules; fine shiny ped faces; pH 7.4. |
Horizon | pH | Salinity Rating | ||
Surface (A1 horizon) | Slightly Acid | Very Low | Non-Sodic | None |
Subsoil (B21 horizon) | Moderately Acid | Very Low | Non-Sodic | None1 |
Deeper subsoil (at 90-130+ cm) | Slightly Alkaline | Very Low | Sodic | Moderate2 |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | Exchangeable Cations | |||
Ca | Mg | K | Na | |||||
meq/100g | ||||||||
A1 | 0-5 | 6.2 | 5.9 | 0.12 | 5 | 1 | 0.76 | 0.21 |
A2 | 5-20 | 5.1 | 4.4 | 0 | 2.1 | 0.42 | 0.23 | 0.11 |
B21 | 20-40 | 5.7 | 4.7 | 0 | 7.3 | 4.9 | 0.40 | 0.42 |
B22 | 40-55 | 6 | 4.8 | 0.06 | 6.9 | 7.1 | 0.47 | 0.89 |
B23 | 55-90 | 7.4 | 6.4 | 0.02 | 6.7 | 9.3 | 0.56 | 1.8 |
B24 | 90-130+ | 7.4 | 6.3 | 0.02 | 7.3 | 10 | 0.21 | 2.3 |
Horizon | Horizon Depth (cm) | 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 | 0-5 | 4.5 | 28.7 | 6.0 | 12 | 50 | 23 | 11 |
A2 | 5-20 | 5.2 | 24.3 | 4.3 | 8 | 53 | 23 | 11 |
B21 | 20-40 | 9.8 | 37.4 | 19.4 | 5 | 21 | 9 | 63 |
B22 | 40-55 | 12 | 38.3 | 22.1 | 4 | 14 | 6 | 74 |
B23 | 55-90 | 35.1 | 18.8 | 6 | 24 | 10 | 56 | |
B24 | 90-130+ |