Location: Simpson
Australian Soil Classification: Humose-Acidic, Kandosolic, Redoxic HYDROSOL
Site Description: Gentle simple slope between plateau and depression
General Landscape Description: Gently undulating plain (plateau)
Geology: Hanson Plain Sand
Soil Profile Morphology:
Surface Soil
A11 | 0-40/45 cm | Black (2.5Y2.5/1), gray (2.5Y6/1 dry) to light yellowish brown (2.5Y6/4 dry); light fine sandy loam; weakly pedal, very weak consistence; moderate amount of roots present; pH 5.1; clear change to: | SW64 Profile. Note: Surface (A1) horizon has been stripped from the soil profile. |
A12 | 40/45-55/60 cm | Grayish brown (2.5Y5/2 moist and dry); loamy sand; apedal; firm consistence; diffuse change to: | |
Subsoil | |||
B21g | 55/60-120 cm | Yellowish brown (10YR5/8) and light yellowish brown (2.5Y6/3) mottled; clayey sand; apedal; firm consistence; pH 4.8; gradual change to: | |
B22g | 120 cm+ | Light brownish gray (10YR6/2) with very coarse prominent yellowish brown (10YR5/6 and 5/8) mottles; clayey sand; apedal. |
pH | Salinity Rating | |||
Surface (A1 horizon) | Strongly Acid | Low | Non-Sodic | - |
Subsoil (B21 horizon) | Very Strongly Acid | Low | Non-Sodic | None |
The surface is strongly acid. The subsoil is very strongly acid. | Salinity rating is low throughout the profile. | The soil is non sodic throughout. | Exchangeable Aluminium levels are high in the subsoil. | Clay levels jump markedly at the surface / subsoil boundary. |
Horizon | Sample Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | Organic Carbon % | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
meq/100g | |||||||||
A1 | 0-40 | 5.1 | 4.5 | 0.26 | 7.7 | 2.3 | 0.5 | 0.5 | 0.3 |
B21g | 55-120 | 4.8 | 4.2 | 0.06 | 0.09 | 0.54 | <0.05 | 0.18 |
Horizon | Sample Depth (cm) | Ex Al mg/kg | Ex Ac meq/100g | Nitrogen % | 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 | 0-40 | 17 | 16 | 0.46 | 37 | 38.4 | 10 | 4.5 |
B21g | 55-120 | 150 | 5.7 | 27.7 | 41.6 | 11.5 | 20.5 |