LOCATION KONSIL TX+OKEstablished Series
TAXONOMIC CLASS: Fine-loamy, siliceous, active, thermic Ultic Paleustalfs
TYPICAL PEDON: Konsil fine sandy loam--pasture. (Colors are for dry soil unless otherwise stated.)
A1--0 to 9 inches; reddish gray (5YR 5/2) fine sandy loam, dark reddish gray (5YR 4/2) moist; weak fine granular structure; soft, very friable; common fine roots; neutral; clear smooth boundary. (4 to 12 inches thick)
E--9 to 12 inches; light reddish brown (5YR 6/3) fine sandy loam, reddish brown (5YR 5/3) moist; weak fine granular structure; soft, very friable; common fine roots; slightly acid; clear smooth boundary. (0 to 8 inches thick)
Bt1--12 to 29 inches; red (2.5YR 5/6) sandy clay loam, red (2.5YR 4/6) moist; moderate medium subangular blocky structure; hard, friable; patchy clay films; common fine roots; strongly acid; gradual smooth boundary. (10 to 25 inches thick)
Bt2--29 to 47 inches; red (2.5YR 5/8) sandy clay loam, red (2.5YR 4/8) moist; moderate medium subangular blocky structure; hard, friable; patchy clay films; common fine roots; common fine pores; strongly acid; gradual smooth boundary. (12 to 30 inches thick)
Bt3--47 to 71 inches; light red (2.5YR 6/8) sandy clay loam, red (2.5YR 5/8) moist; weak medium subangular blocky structure; hard, friable; patchy clay films; few fine pores; common fine pores; few weakly cemented fragments of sandstone in lower part; strongly acid; clear smooth boundary. (12 to 30 inches thick)
Cr--71 to 80 inches; yellowish red (5YR 5/6) weakly cemented sandstone; moderately acid.
TYPE LOCATION: Cooke County, Texas; about 8 miles east and 12 miles north of Gainesville; 0.35 mile south of Dexter on Farm Road 678 and 200 feet east of road, in pasture.
RANGE IN CHARACTERISTICS: The solum ranges from 60 to more than 80 inches thick. Fragments less than three inches across of sandstone, ironstone, or chert range from none to less than 5 percent by volume throughout the solum.
The A horizon has hue of 5YR, 7.5YR, and 10YR, value of 4 through 6 and chroma of 2 through 4. The A2 horizon is one to three units of value higher than the A1 horizon. The A horizon is fine sandy loam on loamy fine sand. The reaction ranges from moderately acid through slightly alkaline.
The Bt horizon has hue of 2.5YR or 5YR, value of 4 through 6 and chroma of 3 through 8. Few to common mottles in shades of red, yellow, brown, or gray are in the lower part of some pedons. Colors in hues of 10YR and 7.5YR are in some pedons below a depth of 40 inches. The texture is sandy clay loam, loam, or fine sandy loam. The clay content of the control section is 18 to 35 percent. Reaction ranges from strongly acid through slightly acid.
The Cr horizon has hue of 2.5YR through 10YR, with values mainly of 4 through 6 and chroma of 2 through 8. It is weakly cemented sandstone or stratified sandstone and loamy soil materials. Some pedons contain sandy strata.
COMPETING SERIES: These are the Galey and Gasil series in the same family and the Bastrop, Bastsil, Duffau, Konawa, May, Silawa, Stephenville, and Weatherford series. Galey and Gasil soils have color in hue of 7.5YR or yellower in the upper B2t horizons. In addition, Galey soils have mixed mineralogy. Bastrop, Bastsil, Duffau, Konawa, May, and Silawa soils have argillic horizons with base saturation of more than 75 percent in some part. Also, Bastrop, Konawa, and May soils have mixed mineralogy. Stephenville and Weatherford soils have sola less than 60 inches thick.
GEOGRAPHIC SETTING: Konsil soils occupy nearly level to gently rolling upland divides. Slopes range from 0 to 15 percent. The soils formed in weathered beds of loamy material and interbedded sandstones of the Woodbind member of upper Cretaceous. Mean annual temperature is 64 degrees to 69 degrees F. Average annual precipitation ranges from 28 to 38 inches. Thornthwaite P-E indices are 44 to 64. Frost free days range from 210 to 240. Elevation ranges from 400 to 900 feet.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Gasil, Duffau, Silawa, and Stephenville series and the Callisburg, Truce and Silstid series. Callisburg and Truce soils have clayey B2t horizons. Silstid soils have a sandy surface horizon 20 to 40 inches thick. Gasil, Duffau, and Silawa soils occupy positions similar to Konsil soils. Callisburg and Truce soils are slightly lower and usually on lesser slopes. Silstid and Stephenville soils are slightly above and on similar slopes.
DRAINAGE AND PERMEABILITY: Well drained; runoff is negligible on 0 to 1 percent slopes, low on 1 to 5 percent slopes and high on 5 to 15 percent slopes; moderate permeability.
USE AND VEGETATION: Used mainly for pasture. Principal culivated crops are grain sorghum and small grain. Native vegetation is postoak and blackjack oak with an understory of little bluestem, big bluestem, and indiangrass.
DISTRIBUTION AND EXTENT: North-central Texas and possibly southern Oklahoma. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Cooke County, Texas; 1973.
REMARKS: These soils were formerly classified in the Red-Yellow Podzolic great soil group. Konsil soils were formerly included with the Konawa series. Base saturation by field test is about 50 percent throughout the Bt horizon at the type location.