LOCATION HARVESTER MOEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, superactive, nonacid, mesic Oxyaquic Udorthents
TYPICAL PEDON: Harvester silt loam - vacant lot under grass on a 3 percent slope in an area reshaped by heavy equipment at an elevation of 520 feet. (Colors are for moist soil unless otherwise stated.)
A--0 to 2 inches; brown (10YR 4/3) silt loam; common coarse distinct very dark grayish brown (10YR 3/2) mottles; few pockets of brown (7.5YR 4/4) silty clay loam; moderate very fine granular structure; friable; many fine roots; neutral; abrupt smooth boundary. (0 to 6 inches thick)
C1--2 to 7 inches; dark yellowish brown (10YR 4/4) silt loam; common pockets of brown (7.5YR 4/4) silty clay loam; weak medium platy fragments; friable; many fine roots; neutral; clear smooth boundary.
C2--7 to 13 inches; brown (7.5YR 4/4) silty clay loam; few fine pockets and thin discontinuous lenses of brown (10YR 4/3) silt loam; strong medium platy fragments; firm; common fine roots; moderately acid; abrupt smooth boundary.
C3--13 to 15 inches; brown (10YR 4/3) silt loam; few blocky pockets of brown (7.5YR 4/4) silty clay loam; moderate medium platy fragments; firm; common fine roots; slightly acid; abrupt smooth boundary.
C4--15 to 21 inches; brown (7.5YR 4/4) silty clay loam; few thin discontinuous lenses of brown (10YR 4/3) silt loam; strong coarse blocky fragments; very firm; common fine roots flattened along faces of peds; common black (10YR 2/1) masses of iron and manganese accumulation; neutral; abrupt smooth boundary.
C5--21 to 31 inches; dark grayish brown (10YR 4/2) silt loam; common fine pockets of brown (7.5YR 4/4) silty clay loam; moderate medium platy fragments; firm; common reddish brown (5YR 4/4) masses of iron accumulation along cleavage planes; common partially decomposed organic material; neutral; abrupt smooth boundary. (Combined thickness of the C horizon is 10 to 40 inches thick.)
Bb1--31 to 47 inches; dark yellowish brown (10YR 4/4) silty clay loam; weak medium prismatic structure; very firm; few fine black (10YR 2/1) iron and manganese concretions throughout; slightly acid; gradual smooth boundary. (0 to 20 inches thick)
Bb2--47 to 67 inches; brown (7.5YR 4/4) silty clay loam; weak medium prismatic structure; firm; few fine black (10YR 2/1) iron and manganese concretions and stains throughout; slightly acid.
TYPE LOCATION: St. Charles County, Missouri; between I-70 and Mexico Road in Survey 979; 190 feet north and 360 feet east of the northwest corner of sec. 34, T. 47 N., R. 4 E; USGS Kampville quadrangle.
RANGE IN CHARACTERISTICS: Reaction ranges from neutral to strongly acid in all horizons.
The A horizon has hue of 10YR or 7.5YR, value of 3 or 4, and chroma of 2, 3 or 4. It is silt loam or silty clay loam.
The C horizon has hue of 10YR or 7.5YR, value of 4 or 5, and chroma of 2 through 6. It is silt loam or silty clay loam with clay content ranging between 18 and 35 percent. Subhorizons are in random sequence, variable in thickness, textures are variable, and often the horizons are discontinuous. The blocky or platy structure fragments of the C horizon are not due to pedigenic factors but due to the way the soil material was put into place by mechanical means.
A buried A horizon is present in some pedons, but most of the time it has been removed and stockpiled for later use. When present, it has hues of 10YR or 7.5YR, value of 2 through 5, and chroma of 1 through 3. Texture is usually silt loam but ranges to include silty clay loam.
The Bb horizon has hue of 10YR or 7.5YR, value of 3, 4, or 5, and chroma of 3, 4, or 5. It is silty clay loam, but silt loam textures are within the range.
COMPETING SERIES: There are no other series in this family. Similar soils are the Dow, Fishpot, Ida, and Kanima series. The Dow and Ida series are calcareous throughout. The Fishpot series formed in disturbed fine-loamy materials greater than 40 inches in thickness. The Kanima series is loamy-skeletal and thermic and formed in dump remains from strip mining operations.
GEOGRAPHIC SETTING: Harvester soils are disturbed materials in areas where loess deposits that have been graded and reshaped for urban and suburban development have been placed over truncated loess soils. Slope gradients range from 2 to 30 percent. The average annual precipitation ranges from 35 to 42 inches and mean annual temperature from 52 to 57 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Menfro and Winfield soils. Menfro and Winfield soils formed in deep undisturbed loess deposits which have argillic horizons. Each of these series occur on similar landscapes.
DRAINAGE AND PERMEABILITY: Moderately well drained. Runoff is moderate. Permeability is moderately slow.
USE AND VEGETATION: Harvester soils are used for residential, commercial and industrial buildings, and adjacent grounds and roadways. Present vegetation is lawn grasses, ornamental shrubs, and shade trees. Native vegetation was forest consisting of oaks and hickory.
DISTRIBUTION AND EXTENT: Urban areas in MLRA 115 and 116B and possibly other urban areas in the midwest. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Indianapolis, Indiana
SERIES ESTABLISHED: St. Louis County, Missouri, l979.
REMARKS: Areas of Harvester soils were in deep loess deposits prior to disturbance by earth-moving equipment. The amount of filling, cutting, alteration of existing soil is variable from place to place.