Established Series


The Rosalie series consists of deep, well drained, moderately permeable, upland soils. These soils formed in unconsolidated loamy sediments. Slopes range from 1 to 8 percent.

TAXONOMIC CLASS: Loamy, siliceous, active, thermic Arenic Paleudults

TYPICAL PEDON: Rosalie loamy fine sand--cropland.
(Colors are for moist soil unless otherwise stated.)

Ap--0 to 9 inches; brown (10YR 5/3) loamy fine sand; weak fine granular structure; loose; common fine fibrous roots; very strongly acid; clear smooth boundary. (6 to 12 inches thick)

E1--9 to 21 inches; very pale brown (10YR 7/3) loamy fine sand; few fine distinct mottles of strong brown (7.5YR 5/6); single grained, loose; few fine fibrous roots; few quartz pebbles 2.5 to 7.5 cm in diameter; very strongly acid; clear smooth boundary. (8 to 15 inches thick)

E2--21 to 31 inches; very pale brown (10YR 7/3) loamy fine sand; single grained; loose; few medium distinct yellowish brown (10YR 5/6) brittle spots; few soft medium distinct black (10YR 2/1) and dark yellowish brown (10YR 4/4) bodies; few quartz pebbles; very strongly acid; clear irregular boundary. (6 to 13 inches thick)

Bt/E---31 to 46 inches; yellowish brown (10YR 5/6) sandy clay loam; few fine prominent red (2.5YR 5/6) mottles that are slightly brittle; weak coarse prismatic structure parting to weak fine subangular blocky; hard, friable; gray (10YR 6/1) clay films surround some peds; the red (2.5YR 5/6) is the ped interior and is surrounded by yellowish brown (10YR 5/4); surface of prisms is gray (10YR 6/1); very pale brown (10YR 7/3) uncoated sand and silt grains (E material) on a few vertical faces of peds and occupy about 10 to 15 percent of the horizontal cross section; very strongly acid; gradual wavy boundary. (10 to 20 inches thick)

Bt--46 to 74 inches; red (2.5YR 4/6) sandy clay loam; weak coarse prismatic structure parting to weak fine and medium subangular blocky; very hard, friable; yellowish brown (10YR 5/8) surrounds the matrix and is surrounded by gray (10YR 6/1); some peds are coated with gray (10YR 5/1) clay films; extremely acid; gradual wavy boundary. (25 to 35 inches thick)

BC--74 to 80 inches; mottled red (2.5YR 4/8), gray (10YR 6/1), and yellowish red (5YR 5/6) sandy clay loam; weak coarse blocky structure; very hard, friable; extremely acid. TYPE LOCATION: Red River County, Texas; south of Clarksville on Farm Road 909 to Rosalie, north on county road 500 feet, west on county road 2,300 feet, north on county road 400 feet; site is 50 feet east of road in idle field.

RANGE IN CHARACTERISTICS: Solum thickness is 60 to over 100 inches. The control section is sandy clay loam or clay loam with a weighted average clay content of 20 to 30 percent. Base saturation at 50 inches below the top of the argillic horizon ranges from 20 to 35 percent, and the calcium content exceeds 1me/100 grams of soil.

The A and E horizons are loamy fine sand or loamy sand throughout and contain few to common coarse fragments. They are very strongly acid through sligtly acid.

The A or Ap horizon has hue of 10YR, value of 4 or 5, and chroma of 3 or 4.

The E horizons have hue of 10YR, value of 5 to 7 and chroma of 3 or 4.

The Bt/E horizon has hue of 10YR or 7.5YR, value of 5 or 6, and chroma of 3 to 8. Some pedons have a few fine and medium mottles of red, yellowish red, and gray. From 5 to 20 percent of this horizon consists of pockets and streaks of uncoated sand and silt E materials. Texture of the horizon is sandy clay loam or clay loam. Reaction ranges from extremely acid to strongly acid.

The Bt and BC horizons are mottled in shades of yellowish brown, brownish yellow, gray, light gray, grayish brown, strong brown, dark red, or red. The gray is dominant in the lower part of some pedons. Texture is sandy clay loam, clay loam, or loam with few to common pockets or vertical streaks of uncoated sand grains. Sandy loam textures occur below 60 inches in some pedons. Plinthite in the lower part of the Bt horizon of some pedons constitutes up to 5 percent by volume. Reaction ranges from extremely acid to strongly acid.

COMPETING SERIES: These are the Autryville, Bonneau, Boykin, Briley, Letney, Lowndes, Lucy, Trep, and Wagram series in the same family and the similar Gomery, Lilbert, Tenaha, and Wolfpen series. Autryville, Bonneau, Letney and Wagram soils do not have skeletons of uncoated sand in the upper Bt horizon. Boykin, Briley and Lucy soils have hues redder than 7.5YR in the Bt horizon. Lowndes soils contain hard white phosphates nodules in the profile. Trep soils do not have skeletons of uncoated sand in the upper Bt horizons and have clayey lower Bt horizons. Gomery and Tenaha soils have sola thinner than 60 inches and in addition, Gomery soils have Cr horizons. Libert soils contain more than 5 percent plinthite in the Bt horizon. Wolfpen soils have base saturation greater than 35 percent.

GEOGRAPHIC SETTING: Rosalie soils occupy nearly level to gently sloping uplands of the Coastal Plain. Slope gradients are mainly 1 to 4 percent but range to about 8 percent. At the type location the mean annual precipitation is 45 inches and Thornthwaite P-E index is about 76. The soils formed in unconsolidated loamy sediments. The mean annual precipitation ranges from 44 to 50 inches and mean annual temperature ranges from 62 to 65 degrees F. The Thornthwaite P-E index exceeds 76.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Bernaldo, Kullit, and Sawyer series. Bernaldo soils have A horizons less than 20 inches thick and have more than 35 percent base saturation. Kullit and Sawyer soils have A horizons less than 20 inches thick and clayey lower Bt horizons. The associated soils are on lower positions in the landscape.

DRAINAGE AND PERMEABILITY: Well drained; internal drainage is moderate; permeability is moderate; runoff is slow. There is a perched water table in the Bt/E horizon for brief periods that exists for less than one month in most years.

USE AND VEGETATION: Most areas have been cleared of timber and cultivated but are now in pasture. Native vegetation is loblolly and shortleaf pines, post oak, red oak, and sweetgum.

DISTRIBUTION AND EXTENT: Southern Coastal Plain of Texas and possibly other adjoining states. The series is of moderate extent.


SERIES ESTABLISHED: Red River County, Texas; 1972.

REMARKS: The soil has been mapped as Bowie loamy fine sand and Wagram loamy fine sand.

Diagnostic horizons and features recognized in this pedon are:

Ochric epipedon - 0 to 31 inches.

Albic horizon - 9 to 31 inches (not diagnostic for series).

Arenic feature - 0 to 31 inches is loamy fine sand texture.

Skeletons in upper argillic horizon - 31 to 46 inches.

Argillic horizon - 31 to 74 inches.

ADDITIONAL DATA: NSSL data from type location S70TX-194-2 (70L1196-70L1197).

National Cooperative Soil Survey
U. S. A.