DkB—Dickson silt loam, 2 to 5 percent slopes
Map Unit Setting
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National map unit symbol: 2rgxr
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Elevation: 590 to 1,410 feet
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Mean annual precipitation: 48 to 58 inches
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Mean annual air temperature: 57 to 59 degrees F
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Frost-free period: 190 to 230 days
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Farmland classification: All areas are prime farmland
Map Unit Composition
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Dickson and similar soils: 85 percent
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Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Dickson
Setting
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Landform: Flats
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Landform position (two-dimensional): Shoulder
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Landform position (three-dimensional): Crest
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Down-slope shape: Linear
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Across-slope shape: Linear
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Parent material: Silty loess over clayey residuum weathered from cherty limestone over clayey residuum weathered from limestone and/or clayey residuum weathered from siltstone
Typical profile
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Ap - 0 to 10 inches: silt loam
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E/Bt - 10 to 24 inches: silt loam
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Btx - 24 to 42 inches: silt loam
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2Bt - 42 to 72 inches: clay
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3Cr - 72 to 82 inches: bedrock
Properties and qualities
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Slope: 2 to 5 percent
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Depth to restrictive feature: 20 to 26 inches to fragipan; 69 to 79 inches to paralithic bedrock
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Natural drainage class: Moderately well drained
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Runoff class: Low
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Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately high (0.00 to 0.20 in/hr)
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Depth to water table: About 12 to 26 inches
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Frequency of flooding: None
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Frequency of ponding: None
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Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm)
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Available water storage in profile: Low (about 5.1 inches)
Interpretive groups
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Land capability classification (irrigated): None specified
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Land capability classification (nonirrigated): 2e
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Hydrologic Soil Group: C/D
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Hydric soil rating: No