LOCATION PAESL IDEstablished Series
TAXONOMIC CLASS: Fine-loamy over sandy or sandy-skeletal, mixed, superactive, frigid Torrifluventic Haploxerolls
TYPICAL PEDON: Paesl silt loam, cultivated. (Colors are for dry soil unless otherwise stated.)
Ap1--0 to 3 inches; grayish brown (10YR 5/2) silt loam, very dark grayish brown (10YR 3/2) moist; weak thin platy structure that parts to weak very fine and fine granular; slightly hard, friable, slightly sticky and slightly plastic; common very fine, fine and medium roots; many very fine and fine interstitial pores; slightly calcareous; moderately alkaline (pH 7.9); clear smooth boundary. (0 to 4 inches thick)
Ap2--3 to 9 inches; grayish brown (10YR 5/2) heavy silt loam, very dark grayish brown (10YR 3/2) moist; weak medium and coarse granular structure; hard, friable, slightly sticky and slightly plastic; common very fine, fine and medium roots; many very fine and fine tubular pores; few worm channels and casts; slightly calcareous; mildly alkaline (pH 7.7); clear smooth boundary.
B2--9 to 17 inches; brown (6.4YR 5/3) (light brown, 7.5YR 6/3 crushed) heavy silt loam, dark brown (7.5YR 3/2) (7.5YR 4/3 crushed) heavy silt loam; slightly darker ped surfaces; moist; few medium faint grayish brown (10YR 5/2) mottles; weak coarse prismatic structure that parts to weak medium and coarse subangular blocky; hard, friable, sticky and plastic; structure that parts to weak medium and coarse subangular blocky; hard, friable, sticky and plastic; common very fine, fine and medium roots; many very fine and fine tubular pores; few worm channels and casts; organic staining on some surfaces of peds; slightly calcareous; mildly alkaline (pH 7.7); gradual smooth boundary. (6 to 12 inches thick)
B3ca--17 to 22 inches; light brown (7.5YR 6/3) silt loam, brown (7.5YR 4/2) moist; weak medium subangular blocky structure; hard, firm, slightly sticky and slightly plastic; common very fine and fine roots; many very fine and fine tubular pores; about 7 percent gravel; moderately calcareous, few fine veins and spots of lime; moderately alkaline (pH 8.0); abrupt smooth boundary. (3 to 15 inches thick)
IIC1ca--22 to 27 inches; pinkish gray (7.5YR 6/2) loam, brown (7.5YR 4/2) moist; weak medium subangular blocky structure; hard, friable, slightly sticky and slightly plastic;s common very fine and fine roots; many fine and very fine tubular pores; about 7 percent gravel; moderately calcareous, few fine veins and spots of lime; moderately alkaline (pH 8.0); abrupt smooth boundary. (3 to 15 inches thick)
IIC2ca--27 to 34 inches; light brownish gray (10YR 7/2) very gravelly loamy coarse sand, dark grayish brown (10YR 4/2) moist; massive; soft, very friable, nonsticky and nonplastic; few very fine and fine roots; many very fine interstitial pores; about 50 percent gravel; moderately calcareous, moderately alkaline (pH 8.0); gradual wavy boundary. (0 to 15 inches thick)
IVC3ca--34 to 50 inches; light brownish gray (10YR 6/2) extremely gravelly loamy coarse sand; single grained; loose, nonsticky and nonplastic; about 80 percent rounded pebbles, mostly quartzite and less amounts of rhyolite; moderately calcareous.
TYPE LOCATION: Bingham County, Idaho; about 1.25 miles west of Goshen; level terrace at 4,650 feet elevation; 500 feet west and 50 feet south of the NE corner sec. 27, T. 1 S., R. 37 E.
RANGE IN CHARACTERISTICS: The mean annual soil temperature is 41 degrees to 47 degrees F. and the mean summer soil temperature at a depth of 20 inches ranges from 59 degrees to 66 degrees F. The soils are usually moist, but are dry for 60 to 80 consecutive days in late summer. The upper 10 to 25 inches of the 10- to 40-inch control section is silty clay loam, silt loam, or loam and averages 18 to 35 percent clay, more than 15 percent particles coarser than very fine sand and less than 35 percent rock fragments. A strongly contrasting sand and gravel layer is at a depth of 20 to 40 inches. The mollic epipedon is 7 to 12 inches thick.
The A1 horizon has hue of 10YR through 5YR and chroma of 2 or 3. It is neutral through moderately alkaline.
The B horizon has hue of 7.5YR or 5YR, value of 5 or 6 dry, 3 or 4 moist and chroma of 2 or 3. It has weak or very weak prismatic and/or weak or very weak subangular blocky structure.
The C horizon has hue of 10YR or 7.5YR, value of 6 or 7 dry, 4 through 6 moist, and chroma of 2 or 3.
COMPETING SERIES: These are the Ammon, Fanu, McCammon, Paul, Stan and Wapello series in other families. Ammon soils have less than 18 percent clay, less than 15 percent particles coarser than very fine sand and no contrasting textures above a depth of 40 inches. Fanu and Paul soils lack contrasting textures above a depth of 40 inches. McCammon soils have bedrock above a depth of 40 inches. Stan soils have a calcic horizon and a moderately coarse textured control section. Wapello soils have a moderately coarse textured control section.
GEOGRAPHIC SETTING: The soils are in level or gently sloping terraces and bottom lands at elevations of 4,200 to 4,800 feet. Slopes are less than 4 percent. The soils formed in mixed alluvium. The climate is semiarid, with dry summers. Mean annual precipitation is about 8 to 13 inches, including 2 to 4 feet of snowfall. Average freeze-free period is 100 to 120 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Ammon, Paul, Stan, and Wapello soils.
DRAINAGE AND PERMEABILITY: Well drained; slow or medium runoff; moderate permeability.
USE AND VEGETATION: Nearly all of these soils are cultivated and irrigated for alfalfa, small grains, sugar beets, and pasture.
DISTRIBUTION AND EXTENT: Upper Snake River Valley, Idaho. The series is inextensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Bingham County, Idaho, 1972.