LOCATION MONTLID ID+OREstablished Series
SOIL FAMILY: Fine-silty, mixed (calcareous), frigid Aquic Torriorthents.
TAXONOMIC CLASS: Fine-silty, mixed, superactive, calcareous, frigid Aquic Torriorthents
TYPICAL PEDON: Montlid silty clay loam, cultivated. (Colors are for dry soil unless otherwise noted.)
Ap--0 to 8 inches, very pale brown (10YR 7/3) silty clay loam, brown (10YR 5/3) moist; strong medium and thick platy structure; hard, friable, sticky and plastic; many very fine and fine roots; moderately calcareous; moderately alkaline (pH 8.0); abrupt smooth boundary. (4 to 10 inches thick)
C1--8 to 18 inches; variable colors of light gray (10YR 7/2) and gray (10YR 5/1) silty clay loam, brown (10YR 5/3) moist; strong medium platy structure; slightly hard, friable, very sticky and plastic; common very fine and fine roots; few very fine pores; strongly calcareous; moderately alkaline (pH 8.0); clear wavy boundary. (6 to 23 inches thick)
C2--18 to 34 inches; light gray (10YR 7/1) silty clay loam, grayish brown (10YR 5/2) moist; weak fine prismatic that parts to weak thin platy structure; slightly hard, firm, very sticky and plastic; common very fine and fine roots; few very fine pores; strongly calcareous; moderately alkaline (pH 8.0); clear wavy boundary. (0 to 18 inches thick)
C3--34 to 42 inches; gray (10YR 6/1) silty clay loam, dark grayish brown (10YR 4/2) moist; weak coarse prismatic that parts to moderate fine subangular blocky structure; slightly hard, firm, very sticky and very plastic; few very fine and fine roots; common very fine pores; moderately calcareous; moderately alkaline (pH 8.2); clear wavy boundary. (0 to 20 inches thick)
C4--42 to 60 inches; light gray (10YR 7/2) silty clay loam, brown (10YR 5/3) moist; massive; hard, firm, sticky and plastic; few fine faint mottles; moderately calcareous; moderately alkaline (pH 8.2).
TYPE LOCATION: Jefferson County, Idaho; 4 miles north of Monteview; 60 feet north and 100 feet east of the southwest corner of sec. 12, T.8N., R.33E.
RANGE IN CHARACTERISTICS: The mean annual soil temperature ranges from 41 degrees to 45 degrees F. and the mean summer soil temperature at a depth of 20 inches ranges from 64 degrees to 67 degrees F. The soils are saturated at a depth of 24 to 60 inches in most years. The 10- to 40-inch control section ranges from silt loam to silty clay loam, 18 to 35 percent clay and some pedons have up to 15 percent coarse fragments. Calcareousness of the profile ranges from moderate to strong due to soil deposition rather than vertical movement of lime. Textural discontinuities occur in some pedons.
The A horizon has hue of 2.5Y or 10YR, value of 6 or 7 dry, 4 through 6 moist, and chroma of 2 or 3.
The C horizon has hue of 2.5Y or 10YR, value of 6 through 8 dry, 3 through 5 moist, and chroma of 1 through 3.
COMPETING SERIES: This is the Terreton series. It has clayey texture and is well drained.
GEOGRAPHIC SETTING: The soils are in playas at elevations of about 4,800 feet. Slopes range from 0 to 1 percent. The soils formed in lacustrine material. The semiarid climate has an average frost-free period of 80 to 100 days, and an annual precipitation of 8 to 11 inches including 1 to 3 feet of snowfall. Maximum precipitation is in May and June.
ASSOCIATED SOILS: These are the Heiseton, Lidy, Matheson and Terreton soils. Heiseton, Lidy and Matheson have coarse-loamy control sections, and Lidy soils are moderately deep over gravel. Terreton soils have a fine control section. None of the above soils have a water table.
DRAINAGE AND PERMEABILITY: Moderately well drained; very slow runoff; moderate or moderately slow permeability.
USE AND VEGETATION: Used for irrigated hay, grain, pasture, and range. Principal natural vegetation is stunted big sagebrush, rabbitbrush, winterfat and perennial grasses.
DISTRIBUTION AND EXTENT: Southeastern Idaho. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Jefferson County, Idaho, 1975.