Dominant Soil Series | |
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Map Unit Name | |
Series Name | |
Taxonomic Class | |
Geomorphic Description | |
Horizon Name | |
Horizon Thickness |
Physical Properties | Value | Units | Description |
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Sand | % | Mineral particles 0.05mm to 2.0mm in equivalent diameter as a weight percentage. | |
Silt | % | Mineral particles 0.002 to 0.05mm in equivalent diameter as a weight percentage. | |
Clay | % | Mineral particles less than 0.002mm in equivalent diameter as a weight percentage. | |
Organic Matter | % | The amount by weight of decomposed plant and animal residue expressed as a weight percentage. | |
Bulk Density | g/cm^3 | The oven dry weight of soil material per unit volume, excluding gravel and rocks larger than 2mm diameter |
Moisture Properties | Value | Units | Description |
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Saturated conductivity (Ksat) | um/s | The amount of water that would move vertically through a unit area of saturated soil in unit time under unit hydraulic gradient. | |
Water content at field capacity | vol water/vol soil | The volumetric content of soil water retained at a tension of 1/3 bar (33 kPa). | |
Water content at permanent wilting point | vol water/vol soil | The volumetric content of soil water retained at a tension of 15 bar (1500 kPa). | |
Plant-available water content: | vol water/vol soil | The amount of water that an increment of soil depth, inclusive of fragments, can store that is available to plants. AWC is commonly estimated as the difference between the water contents at field capacity and permanent wilting point tension, adjusted for salinity and fragments. |
Fertility Properties | Value | Units | Description |
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Cation Exchange Capacity (CEC) | meq-charge/kg soil | The amount of readily exchangeable cations that can be electrically adsorbed to negative charges in the soil, soil constituent, or other material, at pH 7.0, as estimated by the ammonium acetate method. | |
Extractable P | ppm | The amount of phosphorous that is extractable using the Bray1 method. It represents the plant available phosphorous content. | |
Total P | % mass | The estimate of the total phosphorous content of the soil, reported as a gravimetric percent. | |
Acidity Properties | Value | Units | Description |
Calcium carbonate content | % | The quantity of Carbonate (CO3) in the soil expressed as CaCO3 and as a weight percentage. | |
pH | |||
Salinity Properties | Value | Units | Description |
Sodium absorption ratio | ratio (unitless) | A measure of the amount of Sodium (Na) relative to Calcium (Ca) and Magnesium (Mg) in the water extract from saturated soil paste. This is used to diagnose whether saline soils suffer from sodic properties. | |
Electrical conductivity | dS/cm | The electrical conductivity of an extract from saturated soil paste. | |