LOCATION JACQUITH IDEstablished Series
The Jacquith series consists of moderately deep to a duripan soils on
fan terraces. They formed in mixed alluvium and eolian deposits.
Permeability is rapid. Slopes are 0 to 12 percent. The average annual
precipitation is about 9 inches and the average annual air temperature
is about 49 degrees F.
TAXONOMIC CLASS: Sandy, mixed, mesic Xereptic Haplodurids
TYPICAL PEDON: Jacquith loamy fine sand - grass; on a 1 percent slope
at 2,685 feet elevation. (Colors are for dry soil unless otherwise
noted.)
A--0 to 3 inches; grayish brown (10YR 5/2) loamy fine sand, very
dark grayish brown (10YR 3/2) moist; weak very fine granular structure;
loose, very friable; many very fine and fine roots; many very fine
interstitial pores; mildly alkaline (pH 7.8); clear smooth boundary.
(0 to 5 inches thick)
C1--3 to 19 inches; brown (10YR 5/3) loamy fine sand, dark grayish
brown (10YR 4/2) moist; weak coarse subangular blocky structure; soft,
very friable; common fine roots; few very fine tubular pores;
moderately alkaline (pH 8.0); clear smooth boundary. (8 to 25 inches
thick)
C2--19 to 27 inches; light brownish gray (10YR 6/2) loamy fine
sand, dark grayish brown (10YR 4/2) moist; massive; slightly hard,
friable; few fine roots; few very fine and fine tubular pores; slightly
effervescent; moderately alkaline (pH 8.0); clear wavy boundary. (0 to
15 inches thick)
2Bkb--27 to 36 inches; light gray (10YR 7/2) light fine sandy loam
containing very few fine gravel, grayish brown (10YR 5/2) moist;
massive; matrix slightly hard, very friable; few very fine roots;
common very fine and fine tubular pores; about 5 percent consists of
hard rounded nodules of soil material or (cicada) krotovinas; violently
effervescent; moderately alkaline (pH 8.2); abrupt smooth boundary. (0
to 12 inches thick)
2Bkqmb--36 to 50 inches; light gray (10YR 7/2) weakly cemented
duripan, light brownish gray (10YR 6/2) moist; platy, the upper plate
0.3 to 0.8 inch thick and barely can be broken in 2 hands (cannot be
broken in places) but cannot be broken in one hand; top plate has a 1mm
thick, pinkish gray (7.5YR 6/2) discontinuous indurated laminar crust
at its top that is smooth but wavy or irregular; laminar crust cannot
be scratched with a dime and barely can be scratched with a knife;
lower side of plate is rough but lacks distinct stalactites; the
material below the upper plate is white (10YR 8/2), very weak medium
platy, barely can be broken in 2 hands, has many very fine and fine
pores; strongly alkaline (pH 8.7); clear irregular boundary. (6 to 25
inches thick)
2C--50 to 60 inches; stratified sandy loam, loamy sand, and
gravelly loamy sand. Continues to be an undetermined depth.
TYPE LOCATION: Canyon County, Idaho; about 3.5 miles east of Homedale;
220 feet north and 80 feet west of the southeast corner of section 5,
T. 3 N., R. 4 W.
RANGE IN CHARACTERISTICS:
Average annual soil temperature - 47 to 54 degrees F
Depth to duripan - 20 to 40 inches
Depth to calcium carbonate - 15 to 30 inches
Texture in control section - LFS, LS, LCOS, FSL
A horizon
Value- 4 through 6 dry, 3 or 4 moist
Chroma- 2 or 3
Reaction - neutral to moderately alkaline
2Bk horizon
Calcium carbonate content - 15 to 25 percent
Durinode content - 0 to 20 percent
Reaction - mildly to strongly alkaline
2Bkq horizon
Duripan - series of thick plates with SL to LS in between, a thin
laminar cap remains brittle and will not slake in HCL
Reaction - mildly to strongly alkaline
COMPETING SERIES: This is the similar Truesdale series. Truesdale
soils are moderately coarse textured between a depth of 10 inches and
the duripan.
GEOGRAPHIC SETTING: Jacquith soils are on level to sloping, slightly
dissected, medium and high terraces. Slope gradients are from 0 to 12
percent but dominantly between 2 and 5 percent. Elevations range from
2,200 to 3,500 feet. The soils formed in eolian or alluvial deposits
of mixed mineralogy. The climate is semiarid and has dry summers and
moist winters. Average annual precipitation is 7.5 to 11 inches,
including 8 to 30 inches of snow. Average annual air temperature is 45
to 52 degrees F. Frost-free period is 120 to 160 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Quincy soils which lack
a duripan and the Minidoka soils which have a coarse-silty control
section. These soils are on landscape positions similar to the
Jacquith soil.
DRAINAGE AND PERMEABILITY: Well-drained, slow runoff; rapid
permeability.
USE AND VEGETATION: Used mostly for rangeland. Natural vegetation is
big sagebrush, Indian ricegrass, and forbs. Some areas are irrigated
and crops include small grains, alfalfa, hay, pasture, and few
orchards.
DISTRIBUTION AND EXTENT: Southern Idaho. This series is moderately
extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Canyon County, Idaho, 1973.
REMARKS: Diagnostic horizons and features recognized in this pedon
are:
Ochric epipedon - the zone from 0 to 3 inches (A horizon).
Weakly cemented duripan - the zone from 36 to 50 inches (2Bkb horizon).
Particle-size control section - the zone from 10 to 36 inches.
National Cooperative Soil Survey