LOCATION KENNEY TX+LAEstablished Series
TAXONOMIC CLASS: Loamy, siliceous, active, thermic Grossarenic Paleudalfs
TYPICAL PEDON: Kenney loamy fine sand--pasture.
(Colors are for moist soil unless otherwise
stated.)
Ap--0 to 18 inches; dark brown (10YR 4/3) loamy fine sand,
pale brown (10YR 6/3) dry; loose; many fine roots; single grained; medium acid; diffuse wavy boundary. (8 to 20 inches thick)
A2--18 to 60 inches; brown (10YR 5/3) loamy fine sand, very
pale brown (10YR 7/3) dry; loose; few fine roots; single grained; medium acid; clear wavy boundary. (20 to 60 inches thick)
B2t--60 to 106 inches; red (2.5YR 4/6) sandy clay loam;
moderate medium blocky and subangular blocky structure; very hard, firm, sticky; distinct, patchy clay films on faces of peds; few
very fine pores; strongly acid; diffuse wavy boundary. (24 to 60 inches thick)
B3--106 to 120 inches; red (2.5YR 4/6) sandy clay loam; weak medium and coarse subangular blocky structure; hard, friable; clay bridges between sand grains; medium acid.
TYPE LOCATION: Wharton County, Texas; 11.5 miles north of intersection of State Highway 71 and U. S. Highway 59 in El Campo, 0.4 mile east of State Highway 71 on unpaved road, and 200 feet
south in sandpit.
RANGE IN CHARACTERISTICS: The solum ranges from 65 to more than
120 inches in thickness. Reaction is slightly acid through
strongly acid throughout the solum.
The A horizon ranges from 40 to 72 inches in thicknes. It is fine sand or loamy fine sand. The A1 horizon is dark grayish brown
(10YR 4/2), dark brown (10YR 4/3), light brownish gray (10YR 6/2), pale brown (10YR 6/3), brown (7.5YR 5/2, 4/2, 5/4; 10YR 5/3), or grayish brown (10YR 5/2). The A2 horizon is brown (7.5YR 4/2,
5/2, 4/4, 5/4; 10YR 4/3, 5/3), strong brown (7.5YR 5/6) pinkish
gray (7.5YR 6/2, 7/2), light brown (7.5YR 6/4), dark grayish brown (10YR 4/2), light brownish gray (10YR 6/2), pale brown (10YR 6/3), light yellowish brown (10YR 6/4), or very pale brown (10YR 7/3,
7/4). A few discontinuous dark brown to reddish brown lamella
about 1/8 inch thick are in the A2 horizon of some pedons. Few to common fine faint mottles of contrasting shades of yellow and
brown are also in the A2 horizon of some pedons.
The Bt horizon is red (2.5YR 4/6, 4/8, 5/6, 5/8), yellowish red
(5YR 4/6, 5/6, 4/8, 5/8). Mottles of contrasting red, brown, and yellow are in the Bt horizon of many pedons. Texture of the Bt horizon is fine sandy loam, sandy loam, sandy clay loam, or clay loam; the upper 20 inches average between 18 and 35 percent clay.
COMPETING SERIES: These are the
Landman and
Pickton series in the same family and the
Arenosa,
Bienville,
Boy,
Catilla,
Darco,
Hockley,
Larue,
Padina,
Portalto,
Segno, and
Tonkawa series.
Arenosa and Tonkawa soils are sandy throughout and lack argillic horizons. Bienville soils have sandy Bt horizons or have Bt
horizons consisting of lamella. Boy soils have a grayish matrix
due to wetness and contain more than 5 percent plinthite in the Bt horizon. Catilla and Padina soils are dry for longer periods,
have Bt horizons with hues of 10YR or yellower. In addition,
Catilla soils contain more than 5 percent plinthite. Darco soils have base saturation less than 35 percent. Hockley and Segno
soils have loamy A horizons and contain more than 5 percent plinthite. Landman and Pickton soils have colors yellower than
7.5YR with grayish mottles in the Bt horizons. In addition,
Landman soils contain more than 5 percent plinthite below 60
inches. Larue soils have A horizons that range from 20 to 40
inches thick. Portalo soils have yellower argillic horizons and
have average annual soil temperatures greater than 72 degrees F.
GEOGRAPHIC SETTING: Kenney soils are on nearly level to sloping ridges in the Coastal Priaries and Southern Coastal Plains. Slope gradients are predominantly between 1 and 4 percent, but range
from 0 to 8 percent. The soils formed in thick beds of unconsolidated sandy loam, loamy sands, and sandy clay loam of Pleistocene age. The climate is humid; average annual
precipitation ranges from 38 to 55 inches, average annual
temperature from 67 degrees to 70 degrees F., and annual
Thornthwaite P-E indices exceed 62.
GEOGRAPHICALLY ASSOCIATED SOILS: These include the competing
Bienville,
Boy,
Hockley,
Larue, and
Segno series and the
Edna,
Katy, and
Waller series. Edna, Katy, and Waller soils are not as well drained and have thinner A horizons of loamy texture. Edna
and Waller soils are dominated by gray colors. Edna soils have
more than 35 percent clay in the Bt horizon.
DRAINAGE AND PERMEABILITY: Well drained; very slow runoff; rapid internal drainage; and moderately rapid permeabilty.
USE AND VEGETATION: Mainly native pastures of species of
Andropogons and Panicums. Improved pastures are of Coastal bermudagrass and weeping lovegrass. A few areas are cropped to peanuts, melons, and other crops. Mixed pine and hardwood are on some areas. Some areas of Kenney soils are mined for roadfill and construction base material.
DISTRIBUTION AND EXTENT: Southern Coastal Plain and the eastern
part of the Gulf Coast Prairie of southeast Texas. The series is
of moderate extent.
MLRA OFFICE RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Waller County, Texas; 1948.
REMARKS: This series was formerly classified in the Regosol great soil group.
ADDITIONAL DATA: National Soil Survey Laboratory; S73TX-241-1 (73L119).