LOCATION CLODINE                 TX

Established Series
JDC-JKW-SAK-AKS
07/2019

CLODINE SERIES

The Clodine series consists of very deep, somewhat poorly drained, moderately permeable soils that formed in loamy sediments of the Lissie Formation of Pleistocene age. These nearly level soils occur on flats on coastal plains. Slope ranges from 0 to 1 percent but are mainly less than 0.3 percent. Mean annual precipitation is about 1245 mm (49 in) and mean annual temperature is about 20 degrees C (68 degrees F).

TAXONOMIC CLASS: Coarse-loamy, siliceous, superactive, hyperthermic Typic Epiaqualfs

TYPICAL PEDON: Clodine loam - pasture. (Colors are for moist soil unless otherwise stated.)

Ap--0 to 12 cm (0 to 5 in); light brownish gray (10YR 6/2) fine sandy loam, light brownish gray (10YR 6/2), dry; weak fine and medium granular structure; very friable; many very fine roots and many fine roots; common very fine vesicular and common fine vesicular pores; 1 percent fine prominent dark brown (7.5YR 3/3), moist, iron-manganese masses with sharp boundaries lining pores; strongly acid; abrupt wavy boundary.

A--12 to 22 cm (5 to 9 in); light brownish gray (10YR 6/2) fine sandy loam; moderate very coarse platy parts to moderate medium subangular blocky structure; very friable; many very fine roots; many very fine tubular and common fine tubular pores; 1 percent fine prominent yellowish red (5YR 4/6), moist, masses of oxidized iron with sharp boundaries lining pores and 3 percent fine prominent brown (7.5YR 4/4), moist, masses of oxidized iron with sharp boundaries lining pores; moderately acid; gradual wavy boundary. (Combined thickness of Ap and A horizons is 17 to 64 cm [7 to 25 in])

Bt1--22 to 58 cm (9 to 23 in); grayish brown (10YR 5/2) loam; weak medium and coarse subangular blocky structure; friable; common very fine roots; common very fine tubular pores; 8 percent faint dark gray (10YR 4/1), moist, clay films; 2 percent fine prominent strong brown (7.5YR 4/6), moist, masses of oxidized iron with sharp boundaries lining pores and 5 percent fine prominent yellowish red (5YR 5/6), moist, masses of oxidized iron with sharp boundaries on faces of peds; moderately acid; gradual wavy boundary.

Bt2--58 to 90 cm (23 to 35 in); light brownish gray (10YR 6/2) loam, light brownish gray (10YR 6/2), dry; weak coarse prismatic parts to weak coarse subangular blocky structure; friable; common very fine roots; common very fine tubular pores; 15 percent distinct grayish brown (10YR 5/2), moist, clay films on vertical faces of peds; 1 percent fine prominent yellowish red (5YR 5/8), moist, masses of oxidized iron with sharp boundaries in matrix surrounding redox concentrations and 1 percent fine black (7.5YR 2.5/1), moist, manganese masses with sharp boundaries in matrix and 8 percent medium prominent reddish yellow (7.5YR 6/8), moist, masses of oxidized iron with sharp boundaries in matrix surrounding redox concentrations; 1 percent coarse carbonate nodules and 1 percent coarse spherical carbonate nodules; neutral; diffuse irregular boundary.

Bt3--90 to 118 cm (35 to 46 in); light brownish gray (2.5Y 6/2) loam; weak very coarse prismatic parts to weak coarse subangular blocky structure; friable; common very fine roots; common very fine tubular pores; 20 percent distinct light gray (2.5Y 7/1), moist, clay films on vertical faces of peds; 1 percent fine prominent black (7.5YR 2.5/1), moist, manganese masses with sharp boundaries in matrix and 3 percent fine and medium prominent brownish yellow (10YR 6/6), moist, masses of oxidized iron with diffuse boundaries in matrix surrounding redox concentrations and 5 percent fine and medium prominent brownish yellow (10YR 6/8), moist, masses of oxidized iron with clear boundaries in matrix; 1 percent coarse carbonate nodules; slightly alkaline; diffuse irregular boundary.

Bt4--118 to 146 cm (46 to 58 in); light gray (2.5Y 7/1) loam; moderate very coarse prismatic parts to moderate coarse subangular blocky structure; friable; common very fine roots; common very fine tubular pores; 20 percent distinct light gray (2.5Y 7/1), moist, clay films on vertical faces of peds; 1 percent fine prominent black (7.5YR 2.5/1), moist, manganese nodules with sharp boundaries in matrix and 1 percent medium prominent black (7.5YR 2.5/1), moist, manganese nodules with sharp boundaries in matrix and 5 percent medium and coarse prominent brownish yellow (10YR 6/8), moist, masses of oxidized iron with diffuse boundaries in matrix and 15 percent medium and coarse prominent reddish yellow (7.5YR 6/8), moist, masses of oxidized iron with sharp boundaries in matrix; slightly alkaline; gradual wavy boundary. (Combined thickness of the Bt horizons is 139 to 186 cm [55 to 73 in])

Bt5--146 to 203 cm (58 to 80 in); light gray (10YR 7/1) loam; moderate very coarse prismatic parts to moderate coarse subangular blocky structure; friable; common very fine roots; common very fine tubular pores; 20 percent distinct gray (2.5Y 6/1), moist, clay films on vertical faces of peds; 1 percent medium prominent black (7.5YR 2.5/1), moist, manganese nodules with sharp boundaries in matrix and 3 percent fine and medium prominent strong brown (7.5YR 5/8), moist, masses of oxidized iron with sharp boundaries in matrix and 10 percent medium and coarse prominent brownish yellow (10YR 6/6), moist, masses of oxidized iron with diffuse boundaries in matrix and 12 percent medium and coarse prominent brownish yellow (10YR 6/8), moist, masses of oxidized iron with clear boundaries in matrix surrounding redox concentrations; slightly alkaline.

TYPE LOCATION: Harris County, TX; about 2.5 miles north of the intersection of FM 529 and Katy Hockley Cutoff, 1.2 miles east and 0.4 miles north in pasture.

USGS topographic quad: Warren Lake, TX
Latitude: 29 55 0.9 N;
Longitude: 95 47 10.10 W.
Datum: WGS 84.

RANGE IN CHARACTERISTICS:
Soil Moisture: An aquic soil moisture regime.
Mean annual soil temperature: 21.7 to 22.2 degrees C (71 to 72 degrees F.)

Particle-size control section (weighted average)
Clay content: 10 to 15 percent
CEC/clay ratio: 0.60 to 0.70

A Horizon
Hue: 10YR to 5Y
Value: 4 to 6
Chroma: 1 or 2
Texture: fine sandy loam, very fine sandy loam, loam
Clay content: 4 to 20 percent
Redox accumulations: amount-0 to 5 percent, color-shades of brown,
Sodium Adsorption Ratio: 0 to 4
Reaction: strongly acid to slightly alkaline

Bt Horizon
(Upper part)
Hue: 10YR to 5Y
Value: 5 to 7
Chroma: 1 or 2
Texture: fine sandy loam, very fine sandy loam, loam
Clay content: 9 to 20 percent
Redox accumulations: amount-1 to 5 percent, color-shades of brown or yellow
Sodium Adsorption Ratio: 0 to 4
Reaction: strongly acid to slightly alkaline

Bt Horizon
(lower part)
Hue: 10YR to 5Y
Value: 5 to 7
Chroma: 1 or 2
Texture: fine sandy loam, very fine sandy loam, loam, or sandy clay loam
Clay content: 10 to 29 percent
Redox accumulations: amount-1 to 15 percent, color-shades of brown or yellow
Sodium Adsorption Ratio: 0 to 8
Reaction: strongly acid to slightly acid

Btn Horizon
(where present)
Hue: 10YR to 5Y
Value: 5 to 7
Chroma: 1 or 2
Texture: fine sandy loam, loam, sandy clay loam, or clay loam
Clay content: 10 to 29 percent
Redox accumulations: amount-1 to 15 percent, color-shades of brown or yellow
Sodium Adsorption Ratio: 12 to 30
Reaction: neutral to moderately alkaline

COMPETING SERIES: There are no series in this family. Similar soils are the Addicks (TX), Algoa (TX), Gessner (TX), Leton (TX), Sorter (TX), and Waller (TX) soils.

Addicks and Algoa soils: mollic epipedon; Algoa has a fine-loamy particle-size control section.
Gessner soils: more than 50 percent crawfish activity.
Leton soils: fine-silty particle-size control section; a glossic horizon.
Sorter soils: are very strongly acid to moderately acid in the upper argillic; have more than 50 percent crawfish activity.
Waller soils: fine-loamy particle-size control section; a glossic horizon.

GEOGRAPHIC SETTING:
Parent material: Loamy sediments derived from the Lissie Formation
Landscape: Coastal plains
Landform: flats
Slope: 0 to 1 percent
Precipitation Pattern: Rainfall is fairly uniform throughout the year. Typically, March is the driest month.
Mean annual precipitation range: 1016 to 1245 mm (40 to 49 in)
Thornthwaite annual P-E indices: 62 to 70
Mean annual air temperature range: 20 to 21 degrees C (68 to 70 degrees F)
Frost-free period: 270 to 300 days
Elevation: 30.5 to 55 m (100 to 180 ft)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Addicks (TX), Garwood (TX), Katy (TX), and Telf (TX) series.
Addicks soils: have a mollic epipedon; less than 18 percent clay in the particle-size control section; are on a higher landscape position
Garwood and Telf soils: have more than 35 percent clay in the particle-size control section; are on a higher landscape position
Katy soils: moderately well drained; on a higher landscape position

DRAINAGE AND PERMEABILITY:
Drainage class: Somewhat poorly.
Permeability class: moderate.
Runoff: high
Wetness: soil is saturated for periods of 3 to 6 months during winter and spring. Aquic conditions occur for some time during this period from the surface to the upper part of the argillic horizon.

USE AND VEGETATION:
Major use: mainly for native range and for growning rice
Native vegetation: grasses are mainly species of Andropogon, Paspalum, and Panicum. Myrtle (Myrica cerifera) bushes are common. Mixed pine and oak forests have encroached on some areas.
Ecological sites assigned to phases and components of this series are listed below. Current ecological site assignments are in Web Soil Survey. Components of this series include the following ecological sites: Lowland

DISTRIBUTION AND EXTENT:
General area: Mainly east of the Brazos River, Texas
Land Resource Region: T (Atlantic and Gulf Coast Lowland Forest and Crop Region)
Major Land Resource Area: 150A (Gulf Coast Prairie)
Extent: Large

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Temple, Texas

SERIES ESTABLISHED: Fort Bend County, Texas; 1956.

REMARKS: Classification changed from Typic Ochraqualfs to Typic

Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: 0 to 22 cm (0 to 9 in.) (Ap and A horizons)
Argillic horizon: 22 to 203 cm (9 to 80 in)(Bt1, Bt2, Bt3, Bt4, Bt5 horizons)
Aquic conditions: 0 to 58 cm (0 to 23 in) (Ap, A, and Bt1 horizons).

ADDITIONAL DATA: KSSL data are available on pedon S04TX-201-001.

Taxonomic Version: Keys to Soil Taxonomy, Twelfth Edition, 2014.

---

National Cooperative Soil Survey
U.S.A.