LOCATION CANADIAN OK+KSEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, thermic Udic Haplustolls
TYPICAL PEDON: Canadian fine sandy loam (Colors are for dry soil unless otherwise stated.)
A1--0 to 8 inches; dark grayish brown (10YR 4/2), crushed, fine sandy loam, very dark grayish brown (10YR 3/2), crushed, moist; weak medium platy structure, parting to weak fine granular structure;slghtly hard, very friable; many very fine and fine roots; many very fine pores; noneffervescent; neutral; clear smooth boundary. (0 to 10 inches thick)
A2--8 to 18 inches; dark grayish brown (10YR 4/2), crushed, fine sandy loam, very dark grayish brown (10YR 3/2) ,crushed, moist; weak medium granular structure; slightly hard, very friable; many very fine and fine roots; many very fine pores; noneffervescent; slightly alkaline; clear smooth boundary. (8 to 20 inches thick)
Bw--18 to 28 inches; brown (7.5YR 5/2), crushed, fine sandy loam, brown (7.5YR 4/2), crushed, moist; weak medium subangular blockly structure parting to weak medium granular; slightly hard, very friable; common very fine and fine roots; many very fine pores; noneffervescent; slightly alkaline; gradual wavy boundary. (10 to 35 inches thick)
C1--28 to 43 inches; strong brown (7.5YR 5/6), crushed, fine sandy loam, strong brown (7.5YR 4/6), crushed, moist; massive; slightly hard, very friable; common very fine and few fine rootsnoneffervescent; slightly alkaline; gradual wavy boundary. (12 to 20 inches thick)
C2--43 to 52 inches; yellowish red (5YR 5/6), crushed, fine sandy loam, yellowish red (5YR 4/6), crushed, moist; massive; slightly hard, very friable; common very fine and few fine roots; noneffervescent; slightly alkaline; gradual smooth boundary. (0 to 20 inches thick)
C3--52 to 84 inches; reddish yellow (5YR 6/6), crushed, loamy fine sand, yellowish red (5YR 5/6), crushed, moist; single grain; soft, very friable; few very fine and few fine roots; stratified with thin layers of red (2.5YR 4/6) moist; noneffervescent; slightly alkaline.
TYPE LOCATION: Oklahoma County, Oklahoma; about 1/2 mile north of the intersection of Reno Avenue and Council Road in Oklahoma City; 2600 feet north and 830 feet east of the southwest corner of sec. 32, T. 12 N., R. 4 W.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 20 to 50 inches.
The A or Ap horizon has hue of 7.5YR or 10YR, value of 3 to 5, and chroma of 2 or 3. Texture is fine sandy loam, sandy loam, loam, or very fine sandy loam. Reaction ranges from very strongly acid through slightly alkaline. The combined thickness of the A horizons ranges from 7 to 20 inches.
The Bw horizons have hue of 7.5YR or 10YR, value of 4 to 6, and chroma of 2 to 6. Texture is fine sandy loam, sandy loam, or loam. Reaction ranges from slightly acid through moderately alkaline.
The C horizon has hue of 7.5YR or 10YR, value of 5 to 7, and chroma of 3 to 6. Texture is typically fine sandy loam, sandy loam, or loam but loamy fine sand or fine sand is included in some pedons below a depth of 40 inches. Reaction ranges from slightly acid through moderately alkaline. Some pedons are calcareous and have free carbonates.
The C2 and C3 horizons has hue of 5YR to 10YR, value of 5 to 7, and chroma of 3 to 6. Texture is typically loam, fine sandy loam, sandy loam, loamy fine sand. Some pedons include fine sand at depths below 40 inches. Reaction ranges from slightly acid through moderately alkaline. Some pedons are calcareous and have strong effervescence.
COMPETING SERIES: This is Crisfield and Slaughterville series. Crisfield soils have colors of 5YR hue or redder in the control section. Slaughterville soils have redder hue and have formed in eolian materials.
GEOGRAPHIC SETTING: Canadian soils are on nearly level to very gently sloping low terraces or high flood plains of the Central Rolling Red Prairies (MLRA 80A). They are rarely flooded. Slopes are 0 to 3 percent. They formed in material weathered from loamy sediments. The climate is dry to moist subhumid. The frost free days range from 200 to 230. The mean annual air temperature ranges from 58 to 64 degrees F. The mean annual precipitation ranges from 26 to 40 inches. The elevation ranges from 700 to 1500 feet. Thornthwaite Annual P-E indices range from 44 to 64.
GEOGRAPHICALLY ASSOCIATED SOILS: These include the competing Crisfield series of the same family and Dale, Lela, Lincoln, McLain, Miller, Port, Pulaski, Reinach, and Yahola series of similar families. Crisfield, Dale, Lela, McLain, and Reinach soils are adjacent soils of the same terrace. Dale and Port soils have mollic epipedons more than 20 inches thick and they have more than 18 percent clay in their control sections. Lela, McLain, and Miller soils have more than 35 percent clay in their control sections. Lincoln, Miller, Port, Pulaski, and Yahola soils are in lower positions on flood plains. Lincoln, Pulaski, and Yahola soils lack mollic epipedons. In addition, Lincoln soils have sandy control sections. Reinach soils have a mollic epipedon more than 20 inches thick, and have less than 18 percent clay, and less than 15 percent material coarser than very fine sand in the control section.
DRAINAGE AND PERMEABILITY: Well drained; moderately rapid permeability; runoff is negligible on 0 to 1 percent slopes and very low on 1 to 3 percent slopes. These soils are subject to rare flooding April through November.
USE AND VEGETATION: Most areas are cultivated. Wheat, alfalfa, and sorghums are the main crops. Native vegetation consists of tall and midgrasses with minor amounts of American elm, pecan, bur oak, eastern cottonwood, green ash, and black walnut trees.
DISTRIBUTION AND EXTENT: Central Rolling Red Prairies (MLRA 80A) of Kansas, Oklahoma, and Texas. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas.
SERIES ESTABLISHED: Roger Mills County, Oklahoma; 1914.
REMARKS: Diagnostic Horizons:
Mollic epipedon: 0 to 18 inches.
Cambic subsurface horizon: 18 to 28 inches.
Udic-Ustic soil moisture regime.
Thermic soil temperature regime.
ADDITIONAL DATA: Oklahoma State University lab data number
71-OK-9-1.
Soil Interpretation Record Number: OK0132.