LOCATION LEMING TXEstablished Series
TAXONOMIC CLASS: Clayey, mixed, active, hyperthermic Arenic Paleustalfs
TYPICAL PEDON: Leming loamy fine sand, on southwest-facing, convex, 1 percent slope in pastureland at an elevation of 133 m (435 ft). (Colors are for dry soil unless otherwise stated)
A--0 to 46 cm (0 to 18 in); pale brown (10YR 6/3) loamy fine sand, brown (10YR 4/3) moist; single grained; loose; many fine roots; few worm casts; slightly acid; clear smooth boundary. (20 to 86 cm [8 to 34 in] thick)
E1--46 to 71 cm (18 to 28 in); very pale brown (10YR 7/3) loamy fine sand, pale brown (10YR 6/3) moist; single grained; loose; common fine roots; few worm casts; slightly acid; clear wavy boundary.
E2--71 to 79 cm (28 to 31 in); light brownish gray (10YR 6/2) loamy fine sand, grayish brown (10YR 5/2) moist; single grained; loose; common fine roots; few faint yellowish brown masses of oxidized iron; few worm casts; slightly acid, abrupt wavy boundary. (combined thickness of E subhorizons is 15 to 51 cm [6 to 20 in])
Bt1--79 to 94 cm (31 to 37 in); grayish brown (10YR 5/2) sandy clay, dark grayish brown (10YR 4/2) moist; weak medium and coarse prismatic structure parting to moderate fine and medium subangular blocky; extremely hard, very firm; common fine roots; few fine pores; common thin discontinuous clay films on surfaces of peds; common fine and medium prominent brownish yellow (10YR 6/6) and red (2.5YR 5/8) masses of oxidized iron; common fine and medium faint gray (10YR 5/1) iron depletions; neutral; gradual wavy boundary.
Bt2--94 to 130 cm (37 to 51 in); grayish brown (10YR 5/2) sandy clay, dark grayish brown (10YR 4/2) moist; weak medium and coarse prismatic structure parting to moderate fine and medium subangular blocky; extremely hard, very firm; few fine pores; common thin discontinuous clay films on surfaces of peds; common medium distinct brownish yellow (10YR 6/6), and prominent red (2.5YR 5/8) masses of oxidized iron; slightly alkaline; gradual wavy boundary.
Bt3--130 to 145 cm (51 to 57 in); light brownish gray (10YR 6/2) sandy clay, grayish brown (10YR 5/2) moist; weak coarse prismatic structure parting to weak medium subangular blocky; extremely hard, very firm; common thin discontinuous clay films on surfaces of peds; common medium and coarse distinct yellowish brown (10YR 5/4) and yellowish red (5YR 5/6) masses of oxidized iron; few medium faint gray (10YR 5/1) iron depletions; slightly alkaline; gradual wavy boundary. (combined thickness of Bt horizon is 51 to 140 cm [20 to 55 in])
Btk1--145 to 165 cm (57 to 65 in); pale brown (10YR 6/3) sandy clay loam, brown (10YR 5/3) moist; weak medium and coarse prismatic structure parting to weak medium subangular blocky; hard, firm; few fine tubular pores; common thin discontinuous clay films on surfaces of peds;common medium and coarse distinct yellowish brown (10YR 5/6), yellowish red (5YR 5/6) masses of oxidized iron; common grayish brown (10YR 5/2) iron depletions; 5 percent calcium carbonate concretions; strongly effervescent; moderately alkaline; gradual wavy boundary. (10 to 30 cm [4 to 12 in] thick)
Btk2--165 to 180 cm (65 to 71 in); light gray (10YR 7/2) sandy clay loam, light brownish gray (10YR 6/2) moist; weak medium prismatic structure parting to weak medium subangular blocky; hard, firm; few very fine tubular pores; few thin discontinuous clay films on surfaces of peds;common medium and coarse distinct brownish yellow (10YR 6/6), yellowish red (5YR 5/6) masses of oxidized iron; common medium grayish brown (10YR 5/2) iron depletions; few masses and concretions of calcium carbonate; slightly effervescent; moderately alkaline. (25 to 51 cm [10 to 20 in] thick)
Btk3--180 to 203 cm (71 to 80 in); light gray 10YR 7/2) fine sandy loam, brown (10YR 5/3) moist; weak coarse prismatic structure parting to weak medium subangular blocky; hard, firm; few fine tubular pores; common fine and medium faint grayish brown (10YR 5/2) iron depletions, and common fine and medium distinct yellowish brown (10YR 5/6) masses of oxidized iron; few masses and concretions of calcium carbonate; slightly effervescent; moderately alkaline.
TYPE LOCATION: Wilson County, Texas; from the intersection of U.S Highway 181 and Texas highway 97E in Floresville; 7 miles east on Texas Highway 97 to the intersection of Farm Road 1922; 3 miles south on Farm Road 1922 to county road; 0.5 mile west on county road; 75 feet south of the county road. Marcelinas Hills USGS quad; Latitude is 29 degrees 10 minutes 41.8 seconds N; Longitude is 98 degrees 3 minutes 5.1 seconds W. NAD 83
RANGE IN CHARACTERISTICS: Solum thickness is greater than 80 in.
Soil Moisture: An ustic soil moisture regime. The soil moisture control section is dry in some or all parts for more than 90 days in normal years. Late June through August are the driest months, while through September through November is the wettest.
Mean annual soil temperature: 22 to 23.5 degrees C (72 to 74 degrees F).
Thickness of the A and E horizons: 51 to 102 cm (20 to 40 in)
Clay increase between E and Bt horizons: 20 to 40 percent
Particle-size control section (weighted average)
Clay content: 35 to 45 percent
A Horizon
Hue: 10YR
Value: 4 to 6
Chroma: 2 or 3
Texture: fine sand or loamy fine sandy
Reaction: slightly acid or neutral.
E Horizon
Hue: 10YR
Value: 6 to 8
Chroma: 2 or 4
Texture: fine sand or loamy fine sandy
Reaction: slightly acid or neutral.
Bt Horizon
(upper Bt Horizons)
Hue: 10YR
Value: 5 to 8
Chroma: 2 to 4
Texture: clay loam, sandy clay, or clay
Redox concentrations: amount- common or many, shades- yellow, red, and brown
Redox depletions: amount-none to common, shades-gray
Reaction: slightly acid to neutral.
Bt Horizon
(lower Bt Horizons)
Hue: 10YR
Value: 5 to 8
Chroma: 2 to 4
Texture: clay loam, sandy clay loam, or sandy clay
Redox concentrations: amount- common or many, shades- yellow, red, and brown
Redox depletions: amount-none to common, shades-gray
Identifiable secondary carbonate: amount-none to common, kind- masses and concretions
Reaction: slightly acid to moderately alkaline.
Btk Horizons
Hue: 10YR
Value: 5 to 8
Chroma: 2 to 4
Texture: fine sandy loam, loam, or sandy clay loam
Redox concentrations: amount- common or many, shades- yellow, red, and brown
Redox depletions: amount-few or common, shades-gray
Identifiable secondary carbonate: amount-none to common, kind- masses and concretions
Reaction: neutral to moderately alkaline
COMPETING SERIES: This includes the
Poth (TX) series. Similar soils are the
Alum (TX),
Chaney (TX),
Demona (TX),
Garcitas (TX),
Nimrod, (TX),
Nueces(TX),
Nusil (TX), and
Tabor (TX), series.
Poth soils: do not have iron depletions in the upper part of the argillic.
Alum soils: in the thermic temperature regime.
Chaney, Demona, Nimrod, and Tabor soils: in the thermic temperature regime.
Garcitas soils: extremely acid to medium acid in the Bt2 horizon; contain 15 to 35 percent coarse fragments in the control section.
Nueces and Nusil soils: loamy control sections;
GEOGRAPHIC SETTING:
Parent material: loamy alluvium of Pleistocene age
Landscape:inland dissected coastal plains
Landform: high stream terraces
Slope: 0 to 5 percent
Mean annual air temperature range: 21 to 23 degrees C (70 to 73 degrees F).
Mean annual precipitation range: 652 to 918 mm (26 to 36 in)
Precipitation Pattern: Precipitation mostly falls during the spring months of April through early June and then again in the fall months of September through November. The driest months are during the winter months and July through August.
Frost-free period: 260 to 290 days
Elevation: 61 to 290 m (200 to 950 feet)
Thornthwaite annual P-E indices: 36 to 44
GEOGRAPHICALLY ASSOCIATED SOILS: These include the
Aluf (TX),
Eufaula (OK),
Miguel (TX),
Nusil (TX),
Rhymes (TX) and
Wilco (TX) series.
Aluf, Eufaula and Rhymes soils: on a slightly higher position on a similar landform; sandy epipedons more than 100 cm (40 in) thick.
Miguel and Wilco soils: epipedons less than 50 cm (20 in) thick; on a higher position on interfluves.
Nueces soils: have a loamy argillic horizon; on a similar landform.
DRAINAGE AND PERMEABILITY: Moderately well drained. Permeability is slow. Runoff is low on slopes less than 1 percent and medium on 1 to 5 percent slopes. A perched water table exists above the Bt horizons for approximately 4 to 12 weeks during the wettest 1 to 3 years out of 10. This soil does not have aquic conditions in most years.
USE AND VEGETATION: Mostly cultivated or in improved pasture. Cultivated crops are grain sorghum, cotton and peanuts. Pastures are mostly coastal bermudagrass. Range vegetation consists of hooded windmillgrass, fringeleaf paspalum, threeawn, fall witchgrass, feathery and little bluestems, and scattered mesquite and oak trees. (Ecological site name: Loamy Sand 25-35" Pz
Ecological site number: R083AY396TX)
DISTRIBUTION AND EXTENT: Northern and Central Rio Grande Plain of Texas (MLRA 83A and 83C). The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Bexar County, Texas; 1964.
REMARKS: Classification change from Aquic Arenic Paleustalfs to Arenic Paleustalfs based on the fact that these soils do not have aquic conditions in most years. Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - 0 to 79 cm (0 to 31 in.) (A and E horizon)
Argillic horizon - 79 to 203 cm (31 to 80 in). (Btk horizons)
Arenic feature - sandy particle size in the A and E horizons from 0 to 79 cm (0 to 31 in.)
Pale feature - clayey particle size in the upper Bt horizon, and 20 percent increase in clay (absolute) between the E and Bt horizons.
ADDITIONAL DATA: Lab data available on pedons from Goliad County from local lab
TAXONOMIC VERSION: Keys to Soil Taxonomy, Tenth Edition, 2006