Dept of Environment, Water and Natural Resources - Depth to Hard Rock (soils)

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Hard rock is basement rock or bedrock that is too hard to dig with hand tools (and does not include hardpans). Mapping shows the average estimated depth to hard rock, while detailed proportion data are supplied for calculating respective areas of each depth to hard rock class (spatial data statistics).

Dept of Environment, Water and Natural Resources - Physical Condition of Surface Soil

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Physical condition of surface soil mapping highlights areas where plant growth may be impeded due to poor surface soil structure, predominantly due to a condition known as hard setting. Mapping shows the proportion of land with surface soils susceptible to hard setting or sealing, while detailed proportion data are supplied for calculating respective areas of each physical condition of surface soil class (spatial data statistics).

Dept of Environment, Water and Natural Resources - Physical Condition of the Soil

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Physical condition of soil provides an integrated view of various physical impediments to plant growth associated with surface soils, subsoils and other limitations (e.g. waterlogging, salinity, rockiness or steepness). Mapping shows the most limiting soil physical condition (provided it occupies at least 30% of a map unit), while detailed proportion data are supplied for calculating respective areas of each physical condition of soil class (spatial data statistics).

Dept of Environment, Water and Natural Resources - Surface Soil Texture

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Surface texture (which refers to approximate clay content) influences many important soil qualities such as waterholding capacity, fertility and erodibility. Mapping shows the most common surface texture within each map unit, while more detailed proportion data are supplied for calculating respective areas of each surface soil texture class (spatial data statistics).

Dept of Environment, Water and Natural Resources - Soils (soil type)

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Sixty one soils (soil types) represent the range of soils found across South Australia’s agricultural lands. Mapping shows the most common soil within each map unit, while more detailed proportion data are supplied for calculating respective areas of each soil type (spatial data statistics).

Dept of Environment, Water and Natural Resources - Soil Surface Carbonate

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Surface carbonate often occurs as finely divided particles which reduce nutrient availability to plants and retard the degradation of some herbicides. Mapping shows the proportion of land with calcareous surface soils, while detailed proportion data are supplied for calculating respective areas of each surface carbonate class (spatial data statistics).

Dept of Environment, Water and Natural Resources - Soil Gully Erosion

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Gully erosion refers to areas affected by erosion channels (more than 30 cm deep) originating from natural watercourses or artificial drainage features. Mapping shows the proportion of land affected by gully erosion, while detailed proportion data are supplied for calculating total areas affected (spatial data statistics).

Dept of Environment, Water and Natural Resources - Soil Alkalinity

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Alkalinity is usually an inherent characteristic of soils, and alkaline soils are largely confined to areas with less than 400 mm annual rainfall. Mapping shows surface and subsoil alkailinty, while detailed proportion data are supplied for calculating respective areas of each alkalinity class (spatial data statistics).

Dept of Environment, Water and Natural Resources - Soil Water Repellence

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Water repellence, or non-wetting, due to coating of soil particles by waxy materials from the breakdown of plant debris can result in water beading on the surface, uneven wetting and large masses of soil remaining dry. Mapping shows the proportion of land affected and degree of water repellence, while detailed proportion data are supplied for calculating respective areas of each water repellence class (spatial data statistics).

Dept of Environment, Water and Natural Resources - Soil Acidity

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Soil acidity mapping highlights land where acidification due to normal farming practices is, or could become, a significant problem. Mapping shows surface and subsoil acidity, and surface buffering capacity (ability to withstand pH changes), while detailed proportion data are supplied for calculating respective areas of each soil acidity class (spatial data statistics). Also available for download in the Australian Soil Resource Information System format: Surface Soil Acidity; Subsurface Soil Acidity and Subsoil Acidity.