LOCATION HARTZ INEstablished Series
The Hartz series consists of very deep, moderately well drained soils on loess-covered lake plains. They formed in loess and the underlying stratified lacustrine sediments. Slopes range from 0 to 2 percent. Mean annual precipitation is about 1092 mm (43 inches), and mean annual temperature is about 12.8 degrees C (55 degrees F).
TAXONOMIC CLASS: Fine-silty, mixed, active, mesic Aquic Hapludalfs
TYPICAL PEDON: Hartz silt loam on a 0.5 percent slope in a cultivated field at an elevation of 126.5 meters (415 feet) above mean sea level. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 23 cm (0 to 9 inches); brown (10YR 5/3) silt loam, very pale brown (10YR 7/3) dry; moderate medium granular structure; friable; common fine roots throughout; very strongly acid; abrupt wavy boundary. [18 to 36 cm (7 to 14 inches) thick]
Bt1--23 to 43 cm (9 to 17 inches); yellowish brown (10YR 5/6) silt loam; moderate fine subangular blocky structure; friable; common fine roots between peds; many faint light yellowish brown (10YR 6/4) and common faint yellowish brown (10YR 5/4) clay films on faces of peds; few medium distinct pale brown (10YR 6/3) iron depletions in the matrix; very strongly acid; clear wavy boundary.
Bt2--43 to 74 cm (17 to 29 inches); yellowish brown (10YR 5/6) silt loam; moderate fine subangular blocky structure; friable; many faint yellowish brown (10YR 5/4) clay films on faces of peds; common fine roots between peds; common medium prominent light gray (10YR 7/2) iron depletions in the matrix; very strongly acid; clear wavy boundary.
Btg--74 to 86 cm (29 to 34 inches); light gray (10YR 7/2) silt loam; moderate medium subangular blocky structure; friable; common fine roots between peds; many faint gray (10YR 6/1) clay films on faces of peds; many fine prominent strong brown (7.5YR 5/6) masses of oxidized iron in the matrix; few fine prominent irregular black (10YR 2/1) iron-manganese concretions; very strongly acid; clear wavy boundary.
B't1--86 to 99 cm (34 to 39 inches); yellowish brown (10YR 5/6) silt loam; moderate medium subangular blocky structure; friable; common fine roots between peds; many prominent light brownish gray (10YR 6/2) clay films on faces of peds; many medium prominent light brownish gray (10YR 6/2) iron depletions in the matrix; few fine prominent irregular black (10YR 2/1) iron-manganese concretions; very strongly acid; clear wavy boundary.
B't2--99 to 122 cm (39 to 48 inches); strong brown (7.5YR 5/6) silt loam; weak coarse prismatic structure parting to moderate fine subangular blocky; friable; common prominent gray (10YR 6/1) clay films on faces of peds; common medium prominent light gray (10YR 7/2) iron depletions in the matrix; few fine prominent irregular black (10YR 2/1) iron-manganese concretions; moderately acid; clear wavy boundary.
B't3--122 to 165 cm (48 to 65 inches); yellowish brown (10YR 5/6) silt loam; moderate fine subangular blocky structure; friable; common prominent light brownish gray (10YR 6/2) and few faint yellowish brown (10YR 5/4) clay films on faces of peds; common fine prominent light brownish gray (10YR 6/2) iron depletions and common fine faint strong brown (7.5YR 5/6) masses of oxidized iron in the matrix; few fine prominent irregular black (10YR 2/1) iron-manganese concretions; neutral; clear wavy boundary. [Combined thickness of the Bt horizons is 114 to 152 cm (45 to 60 inches.)]
2Bt--165 to 190 cm (65 to 75 inches); stratified, dark yellowish brown (10YR 4/4) 65 percent silty clay loam and 35 percent silt loam; moderate fine subangular blocky structure; firm; common prominent light brownish gray (10YR 6/2) clay films on faces of peds; common fine distinct light brownish gray (10YR 6/2) iron depletions and common fine distinct yellowish brown (10YR 5/6) masses of oxidized iron in the matrix; few fine distinct irregular black (10YR 2/1) iron-manganese concretions; neutral; clear wavy boundary.
2Btk--190 to 203 cm (75 to 80 inches); dark yellowish brown (10YR 4/4) silty clay loam; moderate fine subangular blocky structure; firm; common prominent light brownish gray (10YR 6/2) and common faint dark yellowish brown (10YR 4/4) clay films on faces of peds; common fine distinct light brownish gray (10YR 6/2) iron depletions and many medium distinct yellowish brown (10YR 5/6) masses of oxidized iron in the matrix; few fine distinct irregular black (10YR 2/1) iron-manganese concretions; few fine and medium irregular carbonate nodules; slightly effervescent; moderately alkaline.
TYPE LOCATION: Perry County, Indiana; about 3 miles northeast of Troy; 1,250 feet north and 150 feet east of the southwest corner of sec. 32, T. 5 S., R. 3 W. USGS Fulda, IN topographic quadrangle; lat. 38 degrees 2 minutes 3.5 seconds N. and long. 86 degrees 46 minutes 8.2 seconds W., UTM Zone 16, 520277 easting and 4209646 northing, NAD 83.
RANGE IN CHARACTERISTICS:
Depth to the base of the argillic horizon: 152 to more than 203 cm (60 to more than 80 inches)
Depth to carbonates: 152 to more than 203 cm (60 to more than 80 inches)
Ap horizon:
Hue: 10YR
Value: 4 or 5
Chroma: 3 or 4
Texture: silt loam
Clay content: 10 to 22 percent
Sand content: 7 to 15 percent
Reaction: moderately acid to very strongly acid in non-limed areas and ranges to neutral in limed areas
Bt, B't or Btg horizon:
Hue: 10YR or 7.5YR
Value: 5 to 7
Chroma: 2 to 6 and has redox features
Texture: silt loam or silty clay loam
Clay content: 22 to 33 percent
Sand content: 7 to 15 percent
Reaction: strongly acid or very strongly acid in the upper part and ranges to neutral in the lower part
The 2Bt horizon
Hue: 10YR or 7.5YR
Value: 4 to 7
Chroma: 4 to 6 and has redox depletions
Texture: silty clay or silty clay loam and includes strata of silt loam
Clay content: 27 to 48 percent
Sand content: 1 to 10 percent
Reaction: commonly moderately acid to neutral and ranges to very strongly acid in the upper part
The 2Btk horizon
Hue: 10YR or 7.5YR
Value: 4 to 6
Chroma: 4 to 6, and has redox depletions
Texture: silty clay loam or silty clay, and includes strata of silt loam
Clay content: 24 to 48 percent
Sand content: 1 to 10 percent
Calcium carbonate equivalent: 10 to 30 percent
Reaction: slightly alkaline or moderately alkaline
COMPETING SERIES: These are the Henshaw, Higdon, Lykens, Ogontz, Sardinia, and Travilah series. Henshaw soils are less than 152 cm (60 inches) to the base of the argillic horizon and formed in alluvium derived from calcareous loess. Higdon soils formed in colluvium and alluvium, typically have rock fragments in the series control section and are neutral or more acid throughout the soil profile. Lykens soils are less than 127 cm (50 inches) to carbonates, have rock fragments and formed in till in the lower part of the series control section. Ogontz soils have carbonates within a depth of 122 centimeters (48 inches) and formed in glaciolacustrine deposits. Sardinia soils have brittle horizons, rock fragments in the lower part of the series control section and formed in outwash or old alluvium. Travilah soils have a lithic contact at depths of 51 to 102 cm (20 to 40 inches) and formed in residuum weathered from serpentine.
GEOGRAPHIC SETTING: Hartz soils are on flats of loess-covered lake plains. They formed in 114 to 178 cm (45 to 70 inches) of loess and the underlying lacustrine sediments. Slope ranges from 0 to 2 percent. Mean annual temperature ranges from 11 to 14 degrees C (52 to 57 degrees F), and the mean annual precipitation ranges from 1016 to 1168 mm (40 to 46 inches). Frost-free days range from 170 to 200. Elevation ranges from 110 to 150 meters (360 to 495 feet) above mean sea level.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Lauer, Markland, McGary, Percell, and Shircliff series on lake plains. The somewhat poorly drained Lauer and McGary soils are on similar slightly lower lying flats. The well drained Markland and moderately well drained Percell and Shircliff soils are on summits, shoulders and backslopes of dissected areas.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Moderately well drained. Depth to an intermittent, perched high water table is from 30 to 61 centimeters (1.0 to 2.0 feet) from December to April in most years. Saturated hydraulic conductivity is moderately high or high (1.41 to 14.11 micrometers/s) in the upper part of the solum and moderately low or moderately high (0.42 to 4.23 micrometers/sec) in the lower part. Permeability is moderate or moderately slow (0.2 to 2.0 inches per hour) in the upper part of the solum and slow or moderately slow (0.06 to 0.6 inches per hour) in the lower part. The potential for surface water runoff is low.
USE AND VEGETATION: Most areas are used for growing corn, soybeans, hay, and pasture. Some areas are in woodland and wildlife habitat. Native vegetation is mixed, deciduous hardwood forest.
DISTRIBUTION AND EXTENT: Southern Indiana. The acreage is of small extent in MLRA 120B, but will likely increase as subset surveys in this region are updated.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Morgantown, West Virginia
SERIES ESTABLISHED: Perry County, Indiana, 1997.
REMARKS: Diagnostic horizons recognized in this pedon are:
1) Ochric epipedon- the zone from 0 to 23 cm (0 to 9 inches) (Ap horizon);
2) Argillic horizon- the zone from 23 to 203 cm (9 to 80 inches) (Bt1, Bt2, Btg, B't1, B't2, B't3, 2Bt, 2Btk horizons);
3) Redoximorphic depletions- at 43 to 203 cm (17 to 80 inches).
The Hartz soil was included in mapping and correlated as Henshaw soil in the 1969 Perry County, IN Soil Survey.
ADDITIONAL DATA: Data on pedon number S93IN-123-005 is at the NSSL, Lincoln, NE.