Location: Tulloh
Australian Soil Classification: Humose, Sesquic, Semiaquic PODOSOL
General Landscape Description: Undulating low hills
Site Description: Waxing upper slope
Geology: Ambiguous: Hanson Plain Sand, Dilwyn Formation (Colac 1:250 000), or Eastern View Formation (Colac 1:50 000)
SW70 Landscape |
Soil Profile Morphology:
Ap | 0-20/30 cm | Very dark grayish brown (10YR3/2 moist), grayish brown (10YR5/2 dry); loamy sand; apedal; pH 5.3; diffuse change to: | SW70 Profile. Note: Surface (A1) horizon has been stripped from the soil profile |
A2 | 20/30-90/110 cm | Grayish brown (10YR5/2 moist), conspicuously bleached (10YR7/2 dry); sand; sporadic gravel band (>100 mm); with very many medium to coarse (5-15 mm) nodules with dark manganiferous centres; very weak to weak consistence; pH 5.4; abrupt change to: | |
Subsoil | |||
B21s | 90/110-150 cm | Brown (7.5YR4/4 moist and dry) and brownish yellow (10YR6/8 moist) to yellow (10YR7/8 dry); sandy clay loam; cemented sand "coffee rock"; massive; firm to strong consistence; clear change to: | |
B22g | 150-200 cm | Yellowish brown (10YR5/8 moist) (50%) and light greenish gray (5GY7/1 moist) (50%); very dark grayish brown (10YR3/2 moist) coatings; sandy light clay; pH 6; clear change to: | |
B23 | 200+ cm | Mottled yellowish brown (10YR5/8 moist) (30%) and light greenish gray (5GY7/1 moist) (70%); apedal. |
pH | Salinity Rating | |||
Surface (Ap horizon) | Strongly Acid | Moderate | Non-Sodic | None |
Subsoil (A2 horizon) | Strongly Acid | Very Low | Non-Sodic | None |
Deeper Subsoil (100+ cm) | Moderately Acid | Very Low | Non-Sodic | None |
The surface and upper subsoil is strongly acid. The deeper subsoil is moderately acid. | Salinity rating is moderate in the surface becoming very low in the subsoil. |
| The clay content is quite low throughout the profile. |
Horizon | Sample Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | Nitrogen % | Organic Carbon % | Exchangeable Cations | |||
Ca | Mg | K | Na | |||||||
meq/100g | ||||||||||
Ap | 0-10 | 5.3 | 4.6 | 0.25 | 0.31 | 3.2 | 2 | 1.1 | 0.44 | 0.72 |
A2 | 30-50 | 5.4 | 4.6 | 0.07 | 0.27 | 0.13 | <0.05 | 0.18 | ||
B21s | 100+ | 5.8 | 4.9 | 0.08 | 1.3 | 1.9 | 0.09 | 0.33 |
Horizon | Sample Depth (cm) | Exchangeable Aluminium mg/kg | Exchangeable Acidity meq/100g | Field Capacity pF2.5 | Wilting Point pF4.2 | Coarse Sand (0.2- 2.0 mm) | Fine Sand (0.02- 0.2 mm) | Silt (0.002- 0.02 mm) | Clay (<0.002 mm) |
Ap | 0-10 | 15 | 9.9 | 15.1 | 6.8 | 50 | 32 | 9 | 5 |
A2 | 30-50 | 11 | 2.1 | 8.2 | 1.2 | 48 | 38 | 8 | 5 |
B21s | 100+ | <10 | 4.1 | 12 | 6 | 46 | 32 | 4 | 18 |