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

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Hardpan is material that is too hard to dig with hand tools, that has formed in-situ within or below a soil. Mapping shows the average estimated depth to hardpan, while detailed proportion data are supplied for calculating respective areas of each depth to hardpan class (spatial data statistics).

Dept of Environment, Water and Natural Resources - Surface Rockiness (soils)

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Surface rockiness mapping describes the overall amount of surface stones and outcropping rock, in the context of management implications for farming. Mapping shows the estimated average degree of rockiness, while detailed proportion data are supplied for calculating respective areas of each surface rockiness 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 - Soil Deep Drainage Potential

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Deep drainage refers to the capacity of the deep subsoil and the material immediately below the soil profile to allow excess water to move downwards into deep sediments or fractured rock. Poorly structured or heavy clays are the most restrictive. Mapping shows the most limiting deep drainage potential class (provided this accounts for at least 30% of a map unit), while detailed proportion data are supplied for calculating respective areas of each deep drainage potential class (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 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 - 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 - Subsoil Carbonate

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Fine carbonates in soil reduce nutrient availability to plants, while hard carbonate (e.g. rubble or hard pans) can restrict root growth and soil waterholding capacity. Mapping shows the proportion of land with highly calcareous subsoils within 60 cm of the surface, while detailed proportion data are supplied for calculating respective areas of each subsoil carbonate class (spatial data statistics).

Dept of Environment, Water and Natural Resources - Soil Rootzone Depth Potential CD - Root crops (e.g. potatoes, carrots, onions)

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Potential rootzone depth for irrigated horticultural crops is affected by a range of soil parameters (e.g. soil physical condition, hard rock or hardpan, soluble salts, boron concentrations, alkalinity, acidity and sodicity). Mapping shows the estimated average potential rootzone depth for root crops (e.g. potatoes, carrots, onions), while detailed proportion data are supplied for calculating respective areas of each rootzone depth potential class (spatial data statistics).