LOCATION TOSANEEKENNA ID
Tentative Series
IRD BAG
11/2024
TOSANEEKENNA SERIES
The Tosaneekenna series consists of moderately deep, well drained soils formed in slope alluvium. These soils are on hills. Slopes are 3 to 10 percent. Mean annual precipitation is about 300 mm, and mean annual temperature is about 8 degrees C.
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Haploduridic Durixerolls
TYPICAL PEDON: Tosaneekenna fine sandy loam in cropland. (Colors are for dry soil unless otherwise noted).
Ap1--0 to 8 cm; brown (10YR 5/3) fine sandy loam, dark brown (10YR 3/3) moist; moderate coarse angular blocky structure; slightly hard, very friable, nonsticky and nonplastic; common very fine and few fine and medium roots; many very fine irregular pores; slightly effervescent; 2 percent gravel; moderately alkaline (pH 8.3) abrupt smooth boundary.
Ap2--8 to 18 cm; brown (10YR 5/3) fine sandy loam; dark brown (10YR 3/3) moist; moderate medium angular blocky structure; slightly hard, very friable, nonsticky and nonplastic; common very fine and few fine and medium roots; many very fine irregular and few very fine and fine tubular pores; slightly effervescent; 2 percent fine duripan fragments; moderately alkaline (pH 8.2); abrupt wavy boundary.
ABk--18 to 28 cm; brown (10YR 5/3) fine sandy loam, dark brown (10YR 3/3) moist; weak coarse angular blocky structure; hard, friable, nonsticky and nonplastic; few very fine roots; many very fine irregular and few very fine and fine tubular pores; strongly effervescent; 2 percent fine duripan fragments; 2 percent gravel; moderately alkaline (pH 8.4); abrupt irregular boundary.
Bk--28 to 56 cm; pale brown (10YR 6/3) fine sandy loam, brown (10YR 4/3) moist; weak very coarse subangular blocky structure; very hard, friable, slightly sticky and slightly plastic; few very fine roots; common very fine tubular and irregular pores and few fine tubular pores; strongly effervescent, 5 percent calcium carbonate coats around rock fragments; 10 percent fine and medium duripan fragments; 2 percent gravel; strongly alkaline (pH 8.5); abrupt irregular boundary.
Bkqm1--56 to 64 cm; light gray (10YR 7/1) fractured cemented material, light brownish gray (10YR 6/2) moist; strong thick platy structure; very rigid and brittle; indurated by secondary silica, alternating layers of silica and secondary calcium carbonate that are moderately to strongly cemented; violently effervescent; strongly alkaline (pH 8.6); clear smooth boundary.
Bkqm2--64 to 71 cm; white (10YR 8/1) indurated duripan, light gray (10YR 7/2) moist; violently effervescent; strongly alkaline (pH 8.6); abrupt smooth boundary.
R--71m; indurated basalt bedrock.
TYPE LOCATION: Bingham County, Idaho; USGS topographic quadrangle Fort Hall; latitude 43.091506 degrees north, longitude 112.403130 degrees west, datum WGS84.
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--9 to 10 degrees C
Thickness of mollic epipedon--18 to 40 cm
Depth to calcic horizon--18 to 40 cm
Depth to duripan--50 to 95 cm
Depth to bedrock--50 to 100 cm
Particle-size control section (weighted averages)
Clay content--10 to 18 percent
Rock fragments--0 to 5 percent
The A horizons
Hue--7.5YR or 10YR
Value--4 or 5 dry, 2 or 3 moist
Chroma--2 or 3 dry or moist
Rock fragments--0 to 10 percent gravel
Duripan fragments--0 to 5 percent
Reaction--pH 8.0 to 8.5
Thickness--18 to 40 cm
Bk horizon
Hue--7.5YR or 10YR
Value--6 or 7 dry, 4 or 5 moist
Chroma--2 to 4 dry or moist
Texture (less than 2 mm fraction)--sandy loam, fine sandy loam
Rock fragments--0 to 10 percent gravel
Duripan fragments--0 to 10 percent
Calcium carbonate equivalent--10 to 25 percent
Reaction--pH 8.2 to 8.7
Thickness--20 to 38 cm
Bkqm horizons
Value--7 or 8 dry, 6 or 7 moist
Chroma--1 to 3 dry or moist
Indurated duripan or fractured indurated duripan
Reaction--8.3 to 8.9
Thickness--5 to 20 cm
COMPETING SERIES:
Baker--soils do not have bedrock at 50 to 100 cm
GEOGRAPHIC SETTING:
Landform--hills
Elevation--1,359 to 1,378 meters
Slope--3 to 10 percent
Parent material--slope alluvium
Mean annual precipitation--250 to 300 mm
Mean annual air temperature--7 to 8 degrees C
Frost-free period--100 to 120 days
GEOGRAPHICALLY ASSOCIATED SOILS: None listed.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained, 15 to 50 um/sec.
USE AND VEGETATION: Tosaneekenna soils are primarily used for irrigated cropland. The potential native vegetation is basin wildrye, bluebunch wheatgrass, needle and thread, and basin big sagebrush
DISTRIBUTION AND EXTENT: Tosaneekenna soils are of small extent in southeastern Idaho; MLRA 11
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Bozeman, Montana
SERIES PROPOSED: Bingham County, Idaho 2022. Tosaneekenna series is coined.
REMARKS: Diagnostic horizons and other features:
Mollic epipedon--0 to 28 cm (Ap1, Ap2, and ABk horizons)
Calcic--28 to 56 cm (Bk horizon)
Duripan--56 to 71 cm (Bkqm1 and Bkqm2 horizons)
Lithic contact--71 cm (R horizon)
Particle-size control section--25 to 56 cm
Tosaneekenna soils have a mesic temperature regime and an aridic moisture regime bordering on xeric.
National Cooperative Soil Survey
U.S.A.