LOCATION YOGAVILLE VAEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, active, mesic Fluvaquentic Endoaquolls
TYPICAL PEDON: Yogaville loam-one percent slope-in a hayfield. (Colors are for a moist soil unless otherwise stated)
Ap=0 to 14 inches; very dark grayish brown (10YR 3/2) broken, dark brown (10YR 3/3) crushed, loam; brown (10YR 5/3 dry; moderate medium granular structure; friable, slightly sticky, slightly plastic; few fine and medium roots; few fine flakes of mica; neutral; abrupt smooth boundary. (Ap and A horizons are 10 to 24 inches thick)
Bg1=14 to 32 inches; light gray (10YR 6/1) clay loam; many medium distinct yellowish brown (10YR 5/4) mottles; weak coarse subangular blocky structure; friable, slightly sticky, slightly plastic; few fine roots; few fine flakes of mica; neutral; clear smooth boundary.
Bg2=32 to 55 inches; mottled gray (10YR 5/1) and yellowish brown (10YR 5/6) silt loam; weak coarse subangular blocky structure; friable, slightly sticky, slightly plastic; few fine flakes of mica; slightly acid; clear smooth boundary.
Bg3=55 to 72 inches; gray (10YR 5/1) loam; common medium prominent yellowish brown (10YR 5/6) mottles; weak coarse subangular blocky structure; friable, slightly sticky, slightly plastic; few fine flakes of mica; 5 percent gravel; slightly acid. (Combined thickness of the Bg horizons is 20 to 60 inches or more)
TYPE LOCATION: Appomattox County, Virginia. 1.3 miles north-northeast 5 degrees of the junction of Highways VA-605 and VA-623, 1.8 miles west 270 degrees of the junction of Highways VA-605 and VA-623; 37o29'5.4" latitude, 78o56'15.6" longitude.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 30 to 60 inches or more. Depth to bedrock is more than 60 inches. Gravel and cobble size rock fragments commonly range from 0 to 15 percent throughout the soil, but some pedons range up to 80 percent in the Cg horizon below 40 inches. Reaction is strongly acid through neutral.
The Ap and A horizons have hue of 10YR through 5Y, or it is neutral; value moist of 3, value dry of 4 or 5; and chroma of 2 or 3. They are sandy loam, fine sandy loam, loam, or silt loam.
The Bg horizon has hue of 10YR through 5Y, or it is neutral; value of 4 through 6, and chroma of 0 through 2. Mottles in shades of yellow, brown, or red are in most pedons. The Bg horizon commonly is sandy loam, fine sandy loam, loam, silt loam, or clay loam, and less commonly silty clay loam.
The Cg horizon, where present, has hue of 10YR through 5Y, or it is neutral; value of 4 through 7; and chroma of 0 through 2. Mottles in shades of yellow, brown, or red are in most pedons. The Cg horizon is sand, loamy sand, sandy loam, or fine sandy loam in the fine-earth fraction.
COMPETING SERIES: These are the Kosse and Palazzo series in the same family. Kosse soils have higher soil temperature. Palazzo soils receive 11 inches of rainfall and are dry during part of the growing season.
GEOGRAPHIC SETTING: Yogaville soils are on nearly level flood plains of the Piedmont Plateau. Slopes range from 0 to 2 percent. They formed in recent alluvium derived from limestones, sandstones, siltstones, phyllites, shales, gneiss, granites, schists, and greenstones. The mean annual temperature ranges from 57 to 62 degrees F. Annual precipitation ranges from 35 to 45 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Batteau (tentative), Chewacla, Galtsmill (tentative), Riverview, Toccoa, Wehadkee, and Wingina (tentative) soils. These soils are on flood plains. Gray mottles are lower in the profile in Batteau soils. Chewacla, Riverview, Toccoa, and Wehadkee soils do not have thick dark surface layers. Galtsmill and Wingina soils do not have gray mottles within 20 inches of the soil surface.
DRAINAGE AND PERMEABILITY: Poorly drained. Runoff is slow. Permeability is moderate. Subject to flooding.
USE AND VEGETATION: These soils are used primarily for pasture or woodland.
DISTRIBUTION AND EXTENT: Flood plains within the Piedmont Plateau in Virginia, mainly along the major rivers that have headwaters in the Southern Appalachian Ridge and Valley. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Raleigh, North Carolina
SERIES PROPOSED: Appomattox County, Virginia, 1992.
REMARKS: This soil has been previously mapped as Hatboro and Wehadkee soils.
Diagnostic horizons and features recognized in this pedon are:
1. Mollic epipedon-the zone from the surface to 14 inches (Ap horizon) 2. Cambic horizon-the zone from 14 inches to 72 inches (Bg horizons)
SIR=VA0379
MLRA: 136
REVISED=5/27/92, MHC
ADDITIONAL DATA: Lab data for 25 pedons of this and related soils from study of flood plains of the James River available from Virginia Polytechnic Institute and State University and available in draft manuscript, "Western Virginia Holocene-Alluvial Soil Classification", Document number VAES Bulletin 91-x, September 4, 1991, W. J. Edmonds and M. Crouch.
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation VA0379 YOGAVILLE 0- 2 57- 62 175-215 35- 45 100- 600SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness VA0379 COMMON 0-1.0 APPARENT DEC-MAY 60-60
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- VA0379 0-14 L SIL 0- 0 75-100 10-27 - VA0379 0-14 SL FSL 0- 0 75-100 10-20 - VA0379 14-72 SIL L CL 0- 0 75-100 18-35 -
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll VA0379 0-14 5.1- 7.3 1.-4. 0- 0 0.6- 2.0 LOW VA0379 0-14 5.1- 7.3 1.-4. 0- 0 0.6- 2.0 LOW VA0379 14-72 5.1- 7.3 .5-2. 0- 0 0.6- 2.0 LOW