LOCATION BLOOMSDALE MO
Established Series
Rev. BLB-RLT
08/2023
BLOOMSDALE SERIES
The Bloomsdale series consists of very deep, well drained, moderately permeable soils formed in loamy and clayey alluvium and have an increasing coarse fragment content with increasing depth. These soils are on narrow flood plains in MLRA 116. Slopes range from 0 to 4 percent. Mean annual temperature is 56 degrees F, and mean annual precipitation is 44 inches.
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, mesic Typic Hapludalfs
TYPICAL PEDON: Bloomsdale silt loam on a 2 percent slightly undulating slope in a mixed hardwood forest at an elevation of 560 feet. (Colors are for moist soil unless otherwise stated.)
A--0 to 7 inches; dark brown (10YR 3/3) silt loam, pale brown (10YR 6/3) dry; moderate fine granular structure; friable; many fine roots; neutral; abrupt smooth boundary. (5 to 12 inches thick)
Bw1--7 to 20 inches; brown (10YR 4/3) silt loam; weak medium granular structure; friable; common fine and medium roots; 5 percent fine chert gravel; neutral; gradual smooth boundary. (0 to 15 inches thick)
2Bw2--20 to 32 inches; brown (7.5YR 4/4) very gravelly clay loam; weak very fine subangular blocky structure; friable; common fine roots; 45 percent chert gravel, 10 percent chert cobbles; slightly acid; abrupt smooth boundary. (0 to 20 inches thick)
3Bt1--32 to 48 inches; dark brown (7.5YR 3/2) extremely gravelly clay loam; weak fine subangular blocky structure parting to weak fine granular; friable; common fine roots; few faint clay films; 60 percent chert gravel, 20 percent chert cobbles; moderately acid; gradual wavy boundary. (0 to 24 inches thick)
3Bt2--48 to 60 inches; dark brown (7.5YR 3/4) extremely gravelly clay; moderate fine subangular blocky structure; firm; few fine roots; common fine distinct clay films on rock fragments; 60 percent chert gravel and 20 percent chert cobbles; slightly acid.
TYPE LOCATION: Ste. Genevieve County, Missouri; about 2.5 miles northwest of Minnith; 250 feet west and 1650 feet south of the northeast corner of sec. 24, T. 36 N., R. 8 E.; USGS Minnith, Missouri quadrangle, lat. 37 degrees 48 minutes 44 seconds N. and long. 90 degrees 05 minutes 37 seconds W.
RANGE IN CHARACTERISTICS: The depth to bedrock is greater than 80 inches. Clay content of the particle-size control section averages 24 to 35 percent. Reaction ranges from strongly acid to slightly alkaline throughout. The mean annual soil temperature at 20 inches is 55 to 59 degrees F.
The A or Ap horizon has hue of 10YR or rarely 7.5YR; value of 3 or 4, 6 or 7 dry; and chroma of 2 or 3. It is silt loam, loam or sandy loam or their gravelly or very gravelly analogs. Total rock fragments range from 0 to 35 percent.
The Bw or BA horizon is similar to the A horizon with the addition that it includes color value of 5 and chroma of 4.
The 2Bw or 2Bt horizon has hue of 10YR or 7.5YR, value of 3 to 6, and chroma of 3 to 6. It is gravelly, very gravelly, or extremely gravelly analogs of silt loam, loam, sandy clay loam, sandy loam, coarse sandy loam, or clay loam with rock fragments ranging from 25 to 70 percent.
The 3Bt horizon has hue of 10YR or 7.5YR, and rarely 5YR, value of 3 to 5, and chroma of 2 to 4. It is the very or extremely gravelly analogs of sandy clay loam, clay loam, or clay. Rock fragments range from 50 to 80 percent.
COMPETING SERIES: This is the
Scioto series. Scioto soils have carbonates at 10 to 45 inches and formed in poorly sorted glacial outwash deposits.
GEOGRAPHIC SETTING: Bloomsdale soils are on narrow flood plains. Slopes are 0 to 4 percent. They formed in loamy and clayey alluvium with an increasing coarse fragment content with increasing depth. The mean annual temperature ranges from 54 to 58 degrees F, and the mean annual precipitation ranges from 40 to 45 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Gladden,
Haymond,
Razort soils on similar positions of the flood plain. On the nearby uplands are
Gasconade,
Goss,
Hildebrecht,
Rueter, and
Weingarten soils. Haymond and
Ross soils are commonly silt loam to 40 inches or more without any appreciable chert or gravel content. Gasconade soils are less than 20 inches to bedrock. Goss soils are clayey-skeletal and formed in cherty residuum. Hildebrecht and Weingarten soils are fine-silty and formed in thin loess and the underlying cherty residuum. Razort soils are fine-loamy and have a mollic colored surface layer. Rueter soils formed in cherty residuum.
DRAINAGE AND PERMEABILITY: Well drained. These soils are flooded for short periods most years. Runoff is negligible to low. Permeability is moderate.
USE AND VEGETATION: Some of the acreage is cleared and cultivated or used for pasture. Corn and soybeans are the major row crops. Narrow flood plains and inaccessable areas mostly remain in mixed hardwoods.
DISTRIBUTION AND EXTENT: Southeast Missouri (MLRAs 116A and 115). This series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Morgantown, West Virginia
SERIES ESTABLISHED: Ste. Genevieve County, Missouri, 1982.
REMARKS: This series was originally classified as a Loamy-skeletal, mixed, mesic Typic Udifluvent, and is being changed to the current classification based on the latest Keys to Taxomony and discussions with the national soil classification staff.
Diagnostic horizons and features recognized in this series are:
ochric epipedon - the zone from the surface of the soil to a depth of 7 inches (A horizon)
argillic horizon - the zone from 32 to 60 inches (3Bt1 and 3Bt2 horizons)
National Cooperative Soil Survey
U.S.A.