Yadkin soil series
A representative soil profile of the Yadkin soil series in Iredell County, North Carolina.
Depth Class: Very deep
Drainage Class (Agricultural): Well drained
Internal Free Water Occurrence: Very deep
Flooding Frequency and Duration: None
Ponding Frequency and Duration: None
Index Surface Runoff: Very low to high
Permeability: Moderate
Saturated Hydraulic Conductivity: Moderately high
Shrink-Swell Potential: Low
Landscape: Piedmont uplands (old stream terraces)
Landform: Hills, ridge
Geomorphic Component: Interfluves, side slopes
Hillslope Profile Position: Summit, shoulder, backslope
Parent Material: Old clayey alluvium (weathered from felsic to mafic metamorphic
or igneous rock)
Slope: 2 to 25 percent
TAXONOMIC CLASS: Fine, kaolinitic, mesic Rhodic Kandiudults
Depth to top of Argillic horizon: 10 to 40 centimeters (about 4 to 16 inches thick)
Depth to base of Argillic horizon: Greater than 150 centimeters (about 60 inches)
Depth to Bedrock: Greater than 200 centimeters (about 80 inches)
Depth to Seasonal High Water Table: Greater than 185 centimeters (about 72 inches)
Rock Fragment Content: 0 to 35 percent in the A and E horizons, and 0 to 20 percent in the Bt and BC horizons; mostly gravel and cobbles
Soil Reaction: Very strongly acid (4.5) to moderately acid (6.0) throughout, unless limed.
Mica Content: 0 to 20 percent, by volume mica flakes
USE AND VEGETATION:
Major Uses: Cultivated crops, pasture, forest
Dominant Vegetation: Where cultivated--small grain, corn, soybeans, hay, and tobacco. Where forested--shortleaf pine, Virginia pine, northern red oak, southern red oak, and hickory. Understory plants include dogwood, eastern redbud, and sassafras.
DISTRIBUTION AND EXTENT:
Distribution: North Carolina and Virginia
Extent: Small
These soils were formerly included in the Davidson and Hiwassee series. Even though these soils typically have a subhorizon with more than 60 percent clay (increasing with depth); overall, they have less than 60 percent clay (weighted average) in the particle-size control section.
For a detailed description, visit:
soilseries.sc.egov.usda.gov/OSD_Docs/Y/YADKIN.html
For acreage and geographic distribution, visit:
Yadkin soil series
A representative soil profile of the Yadkin soil series in Iredell County, North Carolina.
Depth Class: Very deep
Drainage Class (Agricultural): Well drained
Internal Free Water Occurrence: Very deep
Flooding Frequency and Duration: None
Ponding Frequency and Duration: None
Index Surface Runoff: Very low to high
Permeability: Moderate
Saturated Hydraulic Conductivity: Moderately high
Shrink-Swell Potential: Low
Landscape: Piedmont uplands (old stream terraces)
Landform: Hills, ridge
Geomorphic Component: Interfluves, side slopes
Hillslope Profile Position: Summit, shoulder, backslope
Parent Material: Old clayey alluvium (weathered from felsic to mafic metamorphic
or igneous rock)
Slope: 2 to 25 percent
TAXONOMIC CLASS: Fine, kaolinitic, mesic Rhodic Kandiudults
Depth to top of Argillic horizon: 10 to 40 centimeters (about 4 to 16 inches thick)
Depth to base of Argillic horizon: Greater than 150 centimeters (about 60 inches)
Depth to Bedrock: Greater than 200 centimeters (about 80 inches)
Depth to Seasonal High Water Table: Greater than 185 centimeters (about 72 inches)
Rock Fragment Content: 0 to 35 percent in the A and E horizons, and 0 to 20 percent in the Bt and BC horizons; mostly gravel and cobbles
Soil Reaction: Very strongly acid (4.5) to moderately acid (6.0) throughout, unless limed.
Mica Content: 0 to 20 percent, by volume mica flakes
USE AND VEGETATION:
Major Uses: Cultivated crops, pasture, forest
Dominant Vegetation: Where cultivated--small grain, corn, soybeans, hay, and tobacco. Where forested--shortleaf pine, Virginia pine, northern red oak, southern red oak, and hickory. Understory plants include dogwood, eastern redbud, and sassafras.
DISTRIBUTION AND EXTENT:
Distribution: North Carolina and Virginia
Extent: Small
These soils were formerly included in the Davidson and Hiwassee series. Even though these soils typically have a subhorizon with more than 60 percent clay (increasing with depth); overall, they have less than 60 percent clay (weighted average) in the particle-size control section.
For a detailed description, visit:
soilseries.sc.egov.usda.gov/OSD_Docs/Y/YADKIN.html
For acreage and geographic distribution, visit: