Location: Cranbourne | Aust. Soil Class: Parapanic, Humic, Semiaquic PODOSOL (very thick, sandy) |
Northcote Factual Key: Uc 2.33 | Great Soil Group: podzol |
General Site Description: Uncultivated grassed verge near edge of vegetable cropping paddock. | |
Geology: Quaternary wind-blown sand. | Landscape Description: Sand dune on a gently undulating sand plain. |
Soil Mapping Unit: Cranbourne sand. |
A1 | 0-15 cm | Black (10YR2/1); loamy sand; very weak consistence dry; pH 5.4; clear change to: | Soil Pit GP20 Profile |
A21 | 15-40 cm | Greyish brown (10YR5/2) conspicuously bleached (10YR7/1d); sand; loose consistence dry; pH 5.0; clear change to: | |
A22 | 40-80 cm | Very pale brown (10YR7/3) conspicuously bleached (10YR7/1d); sand; loose consistence dry; pH 5.3; sharp and tongued change to: | |
Subsoil | |||
Bhs | 80-125 cm | Very dark brown (10YR2/2) variably cemented sand (‘coffee rock'); some development of pipiness; strong consistence dry; pH 5.2; abrupt change to: | |
C | 125-127 cm | Light grey (10YR7/2); sand; abrupt change to: | |
D | 127 cm + | Grey (10YR6/1) with yellowish brown (10YR5/6) mottles; fine sandy loam; weakly structured; pH 5.5. | |
Key Profile Features:
The soil profile is strongly acid throughout. | The salinity rating is very low throughout the soil profile. |
The clay percentage is low throughout the soil profile. | The coarse sand content is high throughout most of the soil profile. |
Exchangeable aluminium levels are very low for the surface horizons. Levels increase in the 'coffee rock' zone. |
Horizon | Horizon Depth | pH water | pH CaCl2 | EC 1:5 | NaCI % | Exchangeable Cations | ExAl mg/kg | Ex Ac meg/100g | Field pF 2.5 | Wilting Point pF 4.2 | Coarse Sand (0.02 -0.2mm) | Fine Sand (0.02-0.2mm) | Silt (0.02-0.2mm) | Clay (<0.002mm) | |||
ca | mg | k | Na | ||||||||||||||
meg/100g | |||||||||||||||||
A1 | 0-15 | 5.4 | 4.4 | 0.07 | 3.4 | 0.08 | 0.29 | 0.18 | <10 | 9.5 | 5.9 | 48 | 41.5 | 2.5 | 2 | ||
A21 | 15-40 | 5 | 3.8 | <0.05 | 0.13 | 0.07 | 0.06 | <0.05 | 10 | 3.7 | 0.8 | 53.9 | 40.3 | 1 | 0.5 | ||
A22 | 40-80 | 5.3 | 4.1 | <0.05 | 0.5 | <0.05 | <0.05 | <0.05 | <10 | 3 | 0.5 | 52.3 | 44.3 | 1 | 0.5 | ||
Bhs | 80-125 | 5.2 | 4.3 | <0.05 | 0.14 | 0.18 | 0.13 | 0.08 | 150 | 6.9 | 3.2 | 44.5 | 44.7 | 1.5 | 3.5 | ||
D | 127+ | 5.5 | 4.2 | <0.05 | 0.15 | 1.4 | 0.11 | 0.31 | 66 | 14.2 | 5.1 | 16 | 56.4 | 1.6 | 13 |