{ "currentVersion": 10.81, "serviceDescription": "Methodology\n1. Data on the individual soil profiles held within the Scottish Soils Database were used to determine the texture of each soil series shown on the 1:25 000 scale maps that delineate the NVZs. \n2. The measured particle size data for each soil horizon (layer) was classified to a depth of 80 cm into a soil texture type based on the British Standard Texture Classes and assigned to one of the five categories (shallow soils - SS, sands - S, sandy loams - SL, other mineral soils - OMS, humose soils - HS, peaty soils - PS.\n3. The digitial soils data were categorised according to these classes using expert knowledge to interpret the 1:25 000 soil series maps.\n4. 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Data on the individual soil profiles held within the Scottish Soils Database were used to determine the texture of each soil series shown on the 1:25 000 scale maps that delineate the NVZs. \n2. The measured particle size data for each soil horizon (layer) was classified to a depth of 80 cm into a soil texture type based on the British Standard Texture Classes and assigned to one of the five categories (shallow soils - SS, sands - S, sandy loams - SL, other mineral soils - OMS, humose soils - HS, peaty soils - PS.\n3. The digitial soils data were categorised according to these classes using expert knowledge to interpret the 1:25 000 soil series maps.\n4. Where a soil series could not be allocated to one of these classes, for example, where soil textures changed abruptly with depth or where there were a significant proportion of the soil profiles examined had a different soil texture class, they were allocated to a hybrid class.\n\nSoil Texture Assessment\n1. Does the moist soil feel or sound gritty? No -> 5, Yes -> 2\n2. Is the soil cohesive? No -> Sand, Yes -> 3\n3. Can the soil be rolled into a ball? No -> Loamy sand, Yes -> 4\n4. Does the soil feel smooth and silky as well as gritty? No -> Sandy loam, Yes -> Sandy silt loam\n5. Does the soil mould to form an easily deformed ball and feel smooth and silky? No -> 6, Yes -> Silt loam\n6. Does the soil mould to form a strong ball that smears but does not take a polish? No -> 9, Yes -> 7\n7. Is the soil also rough and gritty? No -> 8, Yes -> Sandy clay loam\n8. Is the soil also smooth and silky? No -> Clay loam!, Yes -> Silty clay loam\n9. Does the soil mould like plasticine, polish and feel very sticky when wetter? No -> Start again!, Yes -> 10\n10. Is the soil also rough and gritty? No -> 11, Yes -> Sandy clay\n11. Is the soil also smooth and buttery No - > Clay, Yes -> Silty clay", "Subject": "Soil texture based on Hutton 1:25,000 Soils Data. 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