Location: Ellinbank Dairy Research Institute. | Australian Soil Classification: Bleached-Acidic, Dermosolic, Redoxic HYDROSOL. |
Northcote Factual Key: Gn4.64. | Great Soil Group: brown podzolic. |
General Site Description: Valley floor. | Geology: Quaternary unconsolidated alluvium. |
Mapping Unit: Ripplebrook | Geographic Reference: 407043E, 5765891N |
A1 | 0-10 cm | Brown (10YR4/3); silty clay loam; strong medium blocky, parting to moderate fine blocky structure; weak consistence moist; pH 5.1; clear change to: | |
A2 | 10-25 cm | Yellowish brown (10YR5/4) conspicuously bleached (10YR8/2d); silty clay loam; moderate medium blocky, parting to moderate fine subangular blocky structure; weak consistence moist; pH 5.0; clear and wavy change to: | |
Subsoil | |||
B21 | 25-75 cm | Pale brown (10YR6/3) with faint brownish yellow (10YR6/6) mottles; silty clay loam (becoming light clay with depth); moderate medium blocky, parting to moderate fine blocky structure; firm consistence moist; contains very few (2%) soft manganese segregations; pH 5.0; clear and wavy change to: | |
B22 | 75-90 cm | Light brownish grey (10YR6/2) with yellowish brown (10YR5/8) mottles; light medium clay; moderate coarse blocky, parting to moderate fine blocky structure; firm consistence moist; contains few (5%) soft manganese segregations; pH 5.4. |
The soil profile is strongly acid throughout. | The level of soluble salts are very low throughout the profile. | The soil profile is non-sodic throughout. |
The level of exchangeable aluminium is quite high in the strongly acid surface horizons and upper subsoil. | There is negligible change in clay content with depth. |
Horizon | Horizon Depth (cm) | pH water | pH CaCl2 | EC dS/m | Exchangeable Cations | Exchangeable Aluminium mg/kg | 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) | |||
Ca | Mg | K | Na | ||||||||||||
meq/100 g | |||||||||||||||
A1 | 0-10 | 4.4 | 5.1 | 0.08 | 2.8 | 1.1 | 0.43 | 0.17 | 180 | 39 | 12.5 | 2 | 23 | 50 | 26 |
A2 | 10-25 | 4.2 | 5 | <0.05 | 1.7 | 0.52 | 0.3 | 0.09 | 260 | 37.3 | 10.4 | 1 | 24 | 51 | 27 |
B21 | 25-40 | 4.2 | 5 | <0.05 | 1.7 | 0.82 | 0.27 | 0.07 | 260 | 34.1 | 10.6 | 1 | 22 | 53 | 29 |
B21 | 40-75 | 4.3 | 5.1 | <0.05 | 2.3 | 1.7 | 0.23 | 0.09 | 180 | 33.9 | 11 | 1 | 22 | 51 | 29 |
B22 | 75-90 | 4.4 | 5.4 | <0.05 | 2.9 | 2.9 | 0.28 | 0.14 | 130 |
Surface Soil | Depth (cm) | Description |
---|---|---|
A1 | 0-10 | Brown (10YR4/3); silty clay loam; strong medium blocky, parting to moderate fine blocky structure; weak consistence moist; pH 5.1; clear change to: |
A2 | 10-25 | Yellowish brown (10YR5/4) conspicuously bleached (10YR8/2d); silty clay loam; moderate medium blocky, parting to moderate fine subangular blocky structure; weak consistence moist; pH 5.0; clear and wavy change to: |
Subsoil | Depth (cm) | Description |
---|---|---|
B21 | 25-40 | Pale brown (10YR6/3) with faint brownish yellow (10YR6/6) mottles; silty clay loam (becoming light clay with depth); moderate medium blocky, parting to moderate fine blocky structure; firm consistence moist; contains very few (2%) soft manganese segregations; pH 5.0; clear and wavy change to: |
B21 | 40-75 | (as above as same horizon) |
B22 | 75-90 | Light brownish grey (10YR6/2) with yellowish brown (10YR5/8) mottles; light medium clay; moderate coarse blocky, parting to moderate fine blocky structure; firm consistence moist; contains few (5%) soft manganese segregations; pH 5.4. |
pH | Salinity Rating | Sodicity | Dispersion | |
---|---|---|---|---|
Surface (A1 horizon) | Extremely Acid | Very Low | Non Sodic | Not Recorded |
Subsoil (B21 horizon) | Extremely Acid | Very Low | Non Sodic | Not Recorded |
Deep Subsoil (at cm) | Extremely Acid | Very Low | Non Sodic | Not Recorded |
Surface (at cm) | ||||
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC (dS/m) | NaCl % | Exchangeable Cations (meq/100g) | Organic Carbon | Oxidisable Organic Carbon g/100g | Total Nitrogen | Exchangeable Acidity meq/100g | Exchangeable Aluminium mg/kg | Exchangeable Boron mg/kg | Available Boron mg/kg | |||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ca | Mg | K | Na | |||||||||||||
A1 | 0-10 | 4.2 | 5.1 | 0.08 | 2.8 | 1.1 | 0.43 | 0.17 | 180 | |||||||
A2 | 10-25 | 4.2 | 5 | <0.05 | 1.7 | 0.52 | 0.3 | 0.09 | 260 | |||||||
B21 | 25-40 | 4.3 | <0.05 | 1.7 | 0.82 | 0.27 | 0.07 | 260 | ||||||||
B21 | 40-75 | 4.4 | 5.1 | <0.05 | 2.3 | 1.7 | 0.23 | 0.09 | 180 | |||||||
B22 | 75-90 | 4.4 | 5.4 | <0.05 | 2.9 | 2.9 | 0.28 | 0.14 | 130 |
Horizon | Horizon Depth (cm) | Bulk Density g/cm3 | Field Capacity pF2.5 w/w g/g % | Wilting Point pF4.2 w/w g/g % | Coarse Sand (0.02-2.0mm) % | Fine Sand (0.02-0.2mm) % | Silt (0.02-0.002mm) % | Clay (<0.002mm) % | Gravel % |
---|---|---|---|---|---|---|---|---|---|
A1 | 0-10 | 39 | 12.5 | 2 | 23 | 50 | 26 | ||
A2 | 10-25 | 37.3 | 10.4 | 1 | 24 | 51 | 27 | ||
B21 | 25-40 | 34.1 | 10.6 | 1 | 22 | 53 | 29 | ||
B21 | 40-75 | 33.9 | 11 | 1 | 22 | 51 | 29 | ||
B22 | 75-90 |