LOCATION WILDROSE ND
Established Series
MTS-PLA
01/2023
WILDROSE SERIES
The Wildrose series consists of very deep, well drained, slowly permeable soils that formed in glaciolacustrine deposits. These soils are on lake plains and have slopes of 0 to 6 percent. Mean annual temperature is about 41 degrees F, and mean annual precipitation is about 14 inches.
TAXONOMIC CLASS: Fine, smectitic, frigid Typic Haplusterts
TYPICAL PEDON: Wildrose clay on a southeast facing slope of 1 percent in a cultivated field. (Colors are for dry soil unless otherwise stated)
Ap--0 to 6 inches; dark grayish brown (10YR 4/2) clay, very dark grayish brown (10YR 3/2) moist; moderate medium subangular blocky structure; very hard, very firm, very sticky and very plastic; many very fine and few fine roots; 2 to 15 mm wide vertical cracks about 25 cm apart; slight effervescence; neutral; abrupt smooth boundary.
A--6 to 14 inches; grayish brown (2.5Y 5/2) clay, very dark grayish brown (2.5Y 3/2) moist; moderate medium subangular blocky structure parting to moderate fine platy; extremely hard, extremely firm, very sticky and very plastic; common very fine roots; 2 to 15 mm wide vertical cracks about 25 cm apart; slight effervescence; slightly alkaline; clear smooth boundary. (Combined A horizons 6 to 21 inches thick)
Bss1--14 to 21 inches; grayish brown (2.5Y 5/2) clay, very dark grayish brown (2.5Y 3/2) moist; strong medium prismatic structure parting to moderate medium angular blocky; extremely hard, extremely firm, very sticky and very plastic; common very fine and few fine roots in pores and along faces of peds and slickensides; few non-intersecting slickensides; 2 to 15 mm wide vertical cracks about 25 cm apart; slight effervescence; slightly alkaline; clear smooth boundary.
Bss2--21 to 31 inches; grayish brown (2.5Y 5/2) clay; very dark grayish brown (2.5Y 3/2) moist; strong medium prismatic structure parting to moderate medium angular blocky; extremely hard, extremely firm, very sticky and very plastic; common very fine roots along faces of peds and slickensides; few very fine roots in pores; common intersecting slickensides ; common wedge shape natural aggregates tilted 30 degrees to 60 degrees from horizontal; 2 to 15 mm wide vertical cracks about 25 cm apart; slight effervescence; moderately alkaline; clear smooth boundary.
Bss3--31 to 38 inches; olive gray (5Y 4/2) clay, dark olive gray (5Y 3/2) moist; strong medium prismatic structure parting to moderate medium subangular blocky; extremely hard, extremely firm, very sticky and very plastic; common very fine roots along faces of peds and slickensides; few very fine roots in pores; few non-intersecting slickensides; slight effervescence; slightly alkaline; clear wavy boundary. (Combined Bss horizons 13 to 24 inches thick)
By--38 to 44 inches; olive gray (5Y 5/2) clay, dark olive gray (5Y 3/2) moist; moderate medium prismatic structure parting to moderate medium and fine subangular blocky; extremely hard, extremely firm, very sticky and very plastic; few very fine roots; many fine threads and masses of gypsum; slight effervescence; slightly alkaline; clear wavy boundary. (0 to 10 inches thick)
BC--44 to 58 inches; olive gray (5Y 5/2) clay, olive gray (5Y 4/2) moist; strong coarse prismatic structure parting to moderate medium subangular blocky; extremely hard, extremely firm, very sticky and very plastic; few very fine roots; few fine threads and masses of gypsum; slight effervescence; slightly alkaline; gradual wavy boundary. (0 to 15 inches thick)
C--58 to 60 inches; pale olive (5Y 6/3) silty clay, olive (5Y 4/3) moist; common fine prominent strong brown (7.5YR 5/8) moist mottles and few fine distinct very dark brown (10YR 2/2) moist manganese stains; massive; extremely hard, extremely firm, very sticky and very plastic; slight effervescence; slightly alkaline.
TYPE LOCATION: Williams County, North Dakota; about 1 mile southeast of Wildrose; 530 feet north and 150 feet west of the southeast corner, sec. 2, T. 159 N., R. 97 W.
RANGE IN CHARACTERISTICS: Thickness of the mollic epipedon ranges from 16 to more than 40 inches. Depth to carbonates ranges from 0 to 30 inches. When the soil is dry, vertical cracks up to 5 cm wide extend from the surface to as deep as a meter. Typically, the series control section averages between 45 and 60 percent clay.
The A horizon has hue of 10YR or 2.5Y, value of 3 to 5 and 2 or 3 moist, and chroma of 1 or 2. It is clay, silty clay or silty clay loam. It is neutral to moderately alkaline.
The B horizon has hue of 10YR, 2.5Y or 5Y, value of 4 or 5 and 2 to 4 moist, and chroma of 1 or 2. It is clay or silty clay. It is slightly alkaline or moderately alkaline. Some pedons have a Bk horizon.
The C horizon has hue of 10YR, 2.5Y or 5Y, value of 4 to 7 and 3 to 5 moist, and chroma of 2 to 4. It is silty clay, clay or silty clay loam. It is slightly alkaline or moderately alkaline. Some pedons have strata of silt loam below 40 inches.
COMPETING SERIES: These are no other series in the same family. Other competing series are the
Grail,
Lawther,
Magnus,
Marias,
Mondamin,
Nutley,
Wyola and
Sinai series. Grail, Mondamin and Wyola soils have Bt horizons which average between 35 and 50 percent clay. Lawther soils have less than 10 percent sand in the surface layer and subsoil. Magnus soils have an irregular decrease in organic matter content with depth. Marias soils do not have a mollic epipedon. Nutley and Sinai soils do not have intersecting slickensides.
GEOGRAPHIC SETTING: Wildrose soils are on level to gently sloping lake plains. Slope gradients range from 0 to 6 percent. The Wildrose soils formed in calcareous clayey glaciolacustrine deposits. Mean annual air temperature ranges from 40 degrees to 45 degrees F, and mean annual precipitation ranges from 14 to 17 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing
Marias and
Mondamin soils and the
Dooley,
Farnuf,
Sakakawea and
Tansem soils. Marias and Mondamin soils are on smooth nearly level to gently sloping areas in close association with the Wildrose soils. Dooley and Sakakawea soils are on the outer edges of lake plains. Farnuf and Tansem soils are on slight rises. Dooley and Farnuf soils are fine-loamy and have an argillic horizon. In addition, Dooley soils have a sandy loam surface horizon. Sakakawea soils are coarse-silty. Tansem soils are fine-loamy.
DRAINAGE AND PERMEABILITY: Well drained. Surface runoff is very slow to medium. Permeability is slow or very slow.
USE AND VEGETATION: Cultivated areas are used for growing small grains, flax, corn, hay or pasture. Native vegetation is green needlegrass, western wheatgrass, blue grama, sideoats grama and little bluestem.
DISTRIBUTION AND EXTENT: Northwestern North Dakota and possibly northeastern Montana. The soil is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: McIntosh County, North Dakota, 1992.
REMARKS: Diagnostic horizons and features recognized in this pedon are: mollic epipedon - zone from the surface of the soil to a depth of 44 inches (Ap, A, Bss1, Bss2, Bss3 and By horizons); Vertisol criteria - cracks (Ap, A, Bss1 and Bss2 horizons), intersecting slickensides and wedge shaped natural aggregates tilted 10 degrees to 60 degrees from horizontal (Bss2 horizon); chromic great group criteria - chroma of 2 in the upper 30 cm (Ap and A horizon).
Soils previously correlated as Sinai in MLRA 53B (McLean and Ward Counties, North Dakota) would most probably be placed with the Wildrose series.
ADDITIONAL DATA: Laboratory sample S90ND-105-264 (NSSL and NDSHD).
National Cooperative Soil Survey
U.S.A.