LOCATION CLEMAN WAEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Torrifluventic Haploxerolls
TYPICAL PEDON: Cleman very fine sandy loam- irrigated cropland. (Colors are for dry soil unless otherwise stated.)
Ap--0 to 10 inches; grayish brown (10YR 5/2) very fine sandy loam, dark brown (10YR 3/3) moist; weak fine granular structure; soft, very friable, slightly sticky and slightly plastic; few very fine roots; common fine pores; slightly alkaline (pH 7.4); clear wavy boundary. (10 to 20 inches thick)
Cl--10 to 25 inches; brown (10YR 5/3) fine sandy loam, dark brown (10YR 3/3) moist; massive; soft, very friable, nonsticky and nonplastic; few medium roots; slightly alkaline (pH 7.6); abrupt wavy boundary.
C2--25 to 28 inches; brown (10YR 5/3) silt loam, dark brown (10YR 3/3) moist; massive; soft, very friable, nonsticky and nonplastic; slightly alkaline (pH 7.6); abrupt wavy boundary.
C3--28 to 40 inches; yellowish brown (10YR 5/4) sandy loam, dark yellowish brown (10YR 3/4) moist; massive; soft, very friable, nonsticky and nonplastic; slightly alkaline (pH 7.6) clear wavy boundary.
C4--40 to 45 inches; brown (10YR 5/3) fine sandy loam, dark brown (10YR 3/3) moist; massive; soft, very friable, nonsticky and nonplastic; slightly alkaline (pH 7.8); clear wavy boundary.
C5--45 to 55 inches; yellowish brown (10YR 5/4) sandy loam, dark yellowish brown (10YR 3/4) moist; single grain; loose; slightly alkaline (pH 7.8) abrupt wavy boundary.
C6--55 to 60 inches; yellowish brown (10YR 5/4) very fine sandy loam, dark yellowish brown (10YR 3/4) moist; massive; soft, very friable, slightly sticky and nonplastic; slightly alkaline (pH 7.8) (Combined thickness of the C horizon is 40 or more inches)
TYPE LOCATION: Yakima County, Washington; about 6 miles southeast of Moxee; 680 feet west and 100 feet north of the southeast corner section 13, T. 12 N., R. 20 E., W.M.
RANGE IN CHARACTERISTICS: The mean annual soil temperature at a depth of 20 inches is 48 to 54 degrees F. These soils are dry in all parts between depths of 4 and 14 inches more than half of the time that the soil temperature is above 4l degrees F. (105 to 115 days). The mollic epipedon ranges from 10 to 20 inches in thickness. The particle-size control section contains 0 to 5 percent rock fragments. These soils are stratified and have an irregular decrease in organic carbon.
The A horizon has value of 4 or 5 dry, 2 or 3 moist and chroma of 2 or 3 moist and dry. Reaction is neutral or slightly alkaline.
The C horizon has hue of 10YR or 2.5Y, value of 5 or 6 dry, 3 or 4 moist and chroma of 2, 3, or 4 moist and dry. It is stratified with textures ranging from silt loam to loamy fine sand above a depth of 40 inches. Reaction is neutral or slightly alkaline. Below 40 inches the C horizon is stratified with fine-earth textures ranging from silt loam to sand with 0 to 40 percent rock fragments. Reaction is neutral to moderately alkaline.
Some pedons have a thin B horizon.
COMPETING SERIES: These are the
Dressler,
Kimberly,
Kodak,
Ravendog and
Sheepskin series.
Dressler soils - have redoximorphic features within a depth of 30 to 50 inches.
Kimberly soils - are slightly or moderately calcareous throughout the particle-size control section.
Kodak soils are calcareous throughout the particle-size control section; are 20 to 40 inches to a buried A horizon; and contain shell fragments throughout.
Ravendog soils - have secondary carbonates and 5 to 15 percent durinodes within a depth of 20 to 40 inches.
Sheepskin soils - are somewhat excessively drained and have 20 to 35 percent rock fragments in the particle-size control section.
GEOGRAPHIC SETTING: Cleman soils are on alluvial fans and flood plains. Slopes are 0 to 15 percent. Elevation is 400 to 2,000 feet. These soils formed in alluvium. They occur in a dry, semiarid climate. The mean annual precipitation is 8 to 12 inches. The average January temperature is about 27 degrees F. and the average July temperature is about 71 degrees F. The mean annual temperature is 48 to 53 degrees F. The frost-free season is 135 to 200 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Ashue and Roza soils. Ashue and Roza soils have more than 18 percent clay. Ashue soils are on low terraces. Roza soils are on alluvial fans.
DRAINAGE AND PERMEABILITY: Well drained; very slow to medium runoff; moderately rapid permeability. These soils range from no flooding to rare flooding.
USE AND VEGETATION: These soils are used mainly for irrigated orchard, hay and pasture production, and some livestock grazing and dryland cropland. Native vegetation is bluebunch, wheatgrass and Wyoming big sagebrush.
DISTRIBUTION AND EXTENT: South-central Washington. MLRA 7, 8. Series is of small extent.
MLRA OFFICE RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Yakima County, Washington, l947.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon the zone from 0 to 10 inches
Particle-size control section the zone from 10 to 40 inches
There is an assumed irregular decrease in organic carbon with depth throughout the soil.