LOCATION JOINER TXEstablished Series
TAXONOMIC CLASS: Siliceous, thermic Psammentic Paleustalfs
TYPICAL PEDON: Joiner sand on a 2 percent slope in oak trees. (Colors are for dry soil unless otherwise stated.)
A--0 to 12 inches; grayish brown (10YR 5/2) sand, dark grayish brown (10YR 4/2) moist; single grain; soft, very friable; many very fine and fine and few medium roots; moderately acid; clear smooth boundary. (3 to 16 inches thick.)
E1--12 to 38 inches; very pale brown (10YR 7/3) sand, brown (10YR 5/3) moist; single grain; soft, very friable; few very fine, fine and medium roots; moderately acid; gradual smooth boundary. (10 to 46 inches thick.)
E2--38 to 45 inches; white (10YR 8/2) sand, very pale brown (10YR 7/4) moist; single grain; soft, very friable; few very fine, fine and medium roots; moderately acid; gradual smooth boundary. (0 to 38 inches thick.)
Bt1--45 to 50 inches; white (10YR 8/2) loamy sand, very pale brown (10YR 7/4) moist; weak fine subangular blocky structure; soft, very friable; few fine and medium roots; few clay bridges on sand grains; few brittle masses; moderately acid; clear wavy boundary. (0 to 10 inches thick.)
Bt2--50 to 55 inches; brownish yellow (10YR 6/6) loamy sand, strong brown (7.5YR 4/6) moist; weak fine and medium subangular blocky structure; soft, friable; few fine and medium roots; common clay bridging of sand grains; common medium and coarse clean sand grains; very strongly acid; clear smooth boundary. (5 to 46 inches thick.)
Bt3--55 to 65 inches; reddish yellow (7.5YR 7/6) loamy sand, yellowish red (5YR 5/8) moist; weak fine and medium subangular blocky structure; soft, friable; few fine roots; common clay bridging of sand grains; common medium and coarse clean sand grains; strongly acid; clear smooth boundary. (0 to 18 inches thick.)
Bt4--65 to 74 inches; strong brown (7.5YR 5/8) loamy sand, strong brown (7.5YR 5/6) moist; weak fine and medium subangular blocky structure; soft, friable; few fine and medium roots; common clay bridging of sand grains; strongly acid; clear smooth boundary. (0 to 12 inches thick.)
BCt--74 to 80 inches; strong brown (7.5YR 5/6) loamy sand, dark brown (7.5YR 4/4) moist; weak fine subangular blocky structure; soft, friable; few fine and medium roots; few clay bridges on sand grains; strongly acid. (0 to 18 inches thick.)
TYPE LOCATION: Fayette County, Texas; In La Grange, from the intersection of U.S. Highway 77 and Texas Highway 71, 1.5 miles south on U.S. Highway 77, 2.2 miles southeast on Farm Road 155, 1.3 miles northeast on county road, 0.5 mile northeast on private road, 0.4 mile west and 100 feet north in woodland. (Latitude: 29 degrees, 53 minutes, 07 seconds North; Longitude: 96 minutes, 50 seconds, 44 seconds West).
RANGE IN CHARACTERISTICS: Solum thickness is more than 80 inches. Combined thickness of the A and E horizons ranges from 40 to 60 inches. The clay percentage of the control section ranges from 5 to 10 percent.
The A horizon has hue of 10YR, value of 5 to 7, and chroma of 2 to 4. Clay content ranges from 1 to 5 percent. Reaction ranges from extremely acid to slightly acid.
The E horizon has hue of 7.5YR of 10YR, value of 5 to 8, and chroma of 2 to 6. Texture is sand or loamy sand. Clay content ranges from 1 to 5 percent. Reaction ranges from extremely acid to slightly acid.
The Bt horizons have hue of 5YR to 10YR, value of 5 to 8, and chroma of 2 to 8. Mottles in shades of brown, red, or gray range from none to common. Texture is loamy sand or loamy fine sand. The Bt horizons are continuous vertically and horizontally and have very thin clay films as coatings on sand grains and as bridges between sand grains. Reaction ranges from very strongly acid to slightly acid.
The BCt horizon, where present, has hue of 7.5YR or 10YR, value of 5 to 7, and chroma of 2 to 8. Texture is sand or loamy sand. Reaction is moderately acid or slightly acid.
COMPETING SERIES: These are no competing series. Similar soils are Aquilla, Bienville, Catilla, Eufaula, Faula, Flo, Hainesville, and Padina series. Aquilla and Eufala soils have lamella. In addition, Aquilla soils have a water table within a depth of 6 feet. Bienville, Flo and Hinesville soils are in the udic moisture regime. Catilla and Padina soils have loamy control sections.
GEOGRAPHIC SETTING: Joiner soils are on gently sloping uplands. Slopes range from 1 to 5 percent, with gently undulating surfaces. The soils formed in thick sandy deposits of Willis geology that has been somewhat reworked by wind. Mean annual temperature ranges from 68 to 70 degrees F., and mean annual precipitation ranges from 36 to 40 inches. Frost free days range from 260 to 280 and the elevation ranges from 200 to 400 feet. Thornthwaite annual P-E indices range from 52 to 60.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Knolle, Straber and Tremona soils. Knolle soils have sandy surface layers less than 20 inches thick, fine-loamy control sections and are on slightly higher positions. Straber and Tremona soils have clayey control sections. Straber soils have sandy surface layers less than 20 inches thick and are on similar positions. Tremona soils have sandy surface layers 20 to 40 inches thick and are on slightly lower positions.
DRAINAGE AND PERMEABILITY: Somewhat excessively drained. Permeability is rapid. Runoff is negligible on 1 to 3 percent slopes and very low on 3 to 5 percent slopes.
USE AND VEGETATION: Used mostly for pasture and rangeland. Some areas are in improved bermudagrass. Native vegetation includes post oak, blackjack oak, and hickory with an understory of yaupon, grapevines, little bluestem, lovegrass, purpletop and annual weeds.
DISTRIBUTION AND EXTENT: Mainly in the sandy areas associated with the Colorado River system in the Texas Claypan land resource area. The soil is of minor extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Fayette County, Texas; 1992. The name is from a community in south central Fayette county. Alternate names are Halstead and Hostyn.
REMARKS: These soils were formerly included in the Catilla series.
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - 0 to 45 inches. (A and E horizons)
Argillic horizon - 45 to 80 inches. (clay bridging of sand grains in the Bt horizons)
Psammentic feature - Argillic horizon has textures that are loamy fine sand or coarser.
Pale feature - Clay percentage does not decrease from the maximum by as much as 20 percent within 60 inches of the soil surface.
ADDITIONAL DATA: Local laboratory data was provided by the Fayette Soil Survey Staff from a 1990 Field Review study.