LOCATION PINIIPTIT               WA

Established Series
Rev. TLS/KDPL/SBC
09/2019

PINIIPTIT SERIES

Landscape--plateaus
Landform--structural benches, mesas
Slope--0 to 30 percent
Parent material--loess over basalt
Mean annual precipitation--310 to 380 mm
Mean annual air temperature--about 9 degrees C
Depth class--moderately deep
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--mesic
Soil moisture subclass--typic

TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Typic Argixerolls

TYPICAL PEDON: Piniiptit silt loam in an area of rangeland, on a 2-percent, east-northeast-facing slope on the top of a plateau at an elevation of 700 m (All textures are apparent field textures.)

A1--0 to 15 cm; silt loam, brown (10YR 5/3) dry, very dark grayish brown (10YR 3/2) moist; weak thick platy structure parting to moderate fine platy; soft, very friable, slightly sticky and nonplastic; many very fine and fine and few medium roots; common very fine and fine irregular pores; neutral (pH 7.0); abrupt smooth boundary

A2--15 to 33 cm; silt loam, brown (10YR 5/3) dry, very dark grayish brown (10YR 3/2) moist; weak medium prismatic structure parting to moderate medium subangular blocky; soft, very friable, slightly sticky and nonplastic; common fine and medium roots; common very fine and fine irregular pores; neutral (pH 7.0); clear smooth boundary

Bt1--33 to 56 cm; silt loam, yellowish brown (10YR 5/4) dry, brown (10YR 4/3) moist; strong fine and medium subangular blocky structure; hard, firm, slightly sticky and slightly plastic; common fine and medium roots; common very fine and fine irregular pores; common thin clay films on faces of peds and lining pores; slightly alkaline (pH 7.4); clear smooth boundary

Bt2--56 to 64 cm; silt loam, yellowish brown (10YR 5/4) dry, brown (10YR 4/3) moist; strong fine and medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common fine and medium roots; common very fine and fine irregular pores; few thin clay films on faces of peds and lining pores; moderately alkaline (pH 8.0); abrupt wavy boundary

2Bt3--64 to 74 cm; extremely cobbly clay loam, brown (7.5YR 5/4) dry, dark brown (7.5YR 3/3) moist; weak very fine subangular blocky structure; slightly hard, firm, slightly sticky and slightly plastic; few fine roots; common very fine and fine irregular pores; few thin clay films lining pores and on faces of peds; 85 percent cobbles; moderately alkaline (pH 8.0); abrupt wavy boundary

2R--74 cm; basalt

TYPE LOCATION: Yakama Nation, Yakima County, Washington, about 24 km southeast of White Swan; in the NE1/4SE1/4SW1/4SE1/4 of section 11, T. 8 N., R. 17 E., Willamette Meridian; latitude 46.1883163, longitude -120.6404343, datum WGS 84 (coordinates estimated from section, township, and range)

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--8 to 11 degrees C
Soil moisture--usually moist, but dry 90 to 105 consecutive days following summer solstice
Depth to lithic contact--50 to 100 cm
Thickness of mollic epipedon--25 to 50 cm
Clay content in particle-size control section--averages 18 to 35 percent
Rock fragment content--15 to 35 percent total, less than 10 percent in upper part of particle-size control section, more than 35 percent in lower part of particle-size control section

A horizon
Value--3 to 5 dry, 2 or 3 moist
Chroma--1 to 3 dry or moist
Reaction--6.6 to 7.8
Combined thickness--20 to 36 cm

Bt horizon
Hue--10YR, 7.5YR
Value--4 to 6 dry
Chroma--2 to 4 dry or moist
Texture--silt loam, silty clay loam
Reaction--7.4 to 8.4
Combined thickness--20 to 43 cm

2Bt horizon (where present)
Hue--10YR, 7.5YR
Value--4 to 6 dry, 3 to 5 moist
Chroma--3 or 4 dry or moist
Texture--loam, clay loam
Reaction--7.4 to 8.4
Thickness--0 to 15 cm

COMPETING SERIES:
Ahsahka, Colma, Elkheights, Foehlin, Ladd, Picketpin, Pittville, Taneum--no lithic contact within a depth of 100 cm or more
Canyonspring--50 to 100 cm (moderately deep) to a paralithic contact (gneiss)
Currymountain--50 to 100 cm (moderately deep) to a paralithic contact (shale)
Dragnot--argillic horizons with pH less than 7.4
Duzel--50 to 100 cm (moderately deep) to a paralithic contact (greenstone)
Facey--100 to 150 cm (deep) to a paralithic contact (sedimentary or metamorphic rock)
Farrot--sandy clay loam or clay loam in fine-earth fraction throughout particle-size control section
Immiant--less than 35 percent rock fragments throughout argillic horizon; underlain by latite
Lobitos--shaly fragments in lower part of particle-size control section (assumed that "shaly" means channers and flagstones)
Mehlhorn--stony to extremely stony in upper part
Sagaser--100 to 150 cm (deep) to a paralithic contact (shale or sandstone)
Tieton--100 to 150 cm (deep) to a lithic contact (andesite)
Tweedy--50 to 100 cm (moderately deep) to a paralithic contact (mica schist)
Vollmer--pH of 6.1 to 7.3 throughout; dry 45 to 60 consecutive days in moisture control section
Yardarm--50 to 100 cm (moderately deep) to a paralithic contact (schist)

GEOGRAPHIC SETTING:
Elevation--460 to 910 m
Climate--semiarid; warm, dry summers; cool, moist winters
Mean annual precipitation--310 to 380 mm
Mean annual air temperature--8 to 9 degrees C
Frost-free season--115 to 160 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Bakeoven--on uplands; 10 to 25 cm (very shallow) to a lithic contact (basalt)
Broadax--on hills; no lithic contact within a depth of 100 cm or more
Camaspatch--on ridges; 30 to 50 cm (shallow) to a lithic contact (basalt)
Colockum--on foothills; no lithic contact within a depth of more than 150 cm
Morrow--lime accumulation in particle-size control section
Onepennee--on ridges; 13 to 25 cm (very shallow) to a lithic contact (basalt)
Prosser--on hillslopes; aridic soil moisture regime; ochric epipedon
Rock Creek--on plateaus; 20 to 50 cm (very shallow, shallow) to a lithic contact (basalt)
Tronsen--on benches; no lithic contact within a depth of 100 cm or more
Van Nostern--mollic epipedon more than 50 to 75 cm thick
Waxpush--on plateaus; 15 to 25 cm (very shallow) to a lithic contact (basalt)

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--moderately high

USE AND VEGETATION:
Use--livestock grazing
Vegetation--bluebunch wheatgrass, Sandberg bluegrass, Wyoming big sagebrush, lupine, yarrow, rabbitbrush

DISTRIBUTION AND EXTENT: East slopes of Cascade Mountains in south-central Washington; MLRA 8; small extent

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon

SERIES ESTABLISHED: Yakama Nation, Yakima County, Washington; 2014

REMARKS:
Diagnostic horizons and other features recognized in this pedon
*Mollic epipedon--zone from the surface to a depth of 33 cm
*Argillic horizon--zone from 33 to 74 cm; 23 percent rock fragments (weighted average)
*Depth to lithic contact--74 cm
*Particle-size control section--zone from 33 to 74 cm

Piniiptit is the Yakama word for forty. Piniiptit lkwi translates to forty day in Yakama. The type location for this series is near Fortyday Creek. The series originally was named the Hatspring series.

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National Cooperative Soil Survey
U.S.A.