LOCATION EDINA MO+IAEstablished Series
TAXONOMIC CLASS: Fine, smectitic, mesic Vertic Argialbolls
TYPICAL PEDON: Edina silt loam - on a 0.5 percent slope in a cultivated field. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 9 inches; very dark gray (10YR 3/1) silt loam, dark gray (10YR 4/1) dry; weak very fine granular structure; very friable; many roots; neutral; abrupt smooth boundary. (8 to 14 inches thick)
E--9 to 18 inches; dark gray (10YR 4/1) silt loam, light gray (10YR 7/1) dry; moderate thick platy structure parting to weak fine subangular blocky; very friable; many fine roots; few fine faint gray (10YR 5/1) Fe depletions and very dark gray (10YR 3/1) stains; common fine dark concretions (Fe and Mn oxides); moderately acid; abrupt smooth boundary. (5 to 10 inches thick)
Bt--18 to 20 inches; very dark gray (10YR 3/1) silty clay, gray (10YR 5/1) dry, very dark grayish brown (10YR 3/2) kneaded; strong very fine subangular blocky structure; very firm; many fine roots; many faint clay films on faces of peds; many fine faint dark gray (10YR 4/1) Fe depletions and few fine prominent dark yellowish brown (10YR 4/4) Fe masses on interiors of peds; many fine dark concretions (Fe and Mn oxides); light gray (10YR 7/1) clay depletions on some faces of peds; moderately acid; abrupt smooth boundary.
Btg1--20 to 28 inches; very dark gray (10YR 3/1) and dark gray (10YR 4/1) silty clay, very dark grayish brown (10YR 3/2) kneaded in upper part to dark grayish brown (10YR 4/2) kneaded in lower part; weak medium prismatic structure parting to moderate fine angular blocky; very firm; common fine roots; many distinct clay films on faces of peds; few fine prominent dark yellowish brown (10YR 4/4) Fe masses on ped interiors; many fine dark concretions (Fe and Mn oxides); moderately acid; clear smooth boundary.
Btg2--28 to 40 inches; grayish brown (2.5Y 5/2) silty clay; weak fine angular blocky and subangular blocky structure; very firm; few fine roots; many distinct clay films on faces of peds; common fine distinct very dark gray (10YR 3/1) Fe depletions and yellowish brown (10YR 5/4) Fe masses on ped interiors; few fine dark concretions (Fe and Mn oxides); neutral; gradual smooth boundary.
Btg3--40 to 54 inches; grayish brown (2.5Y 5/2) silty clay; weak medium subangular blocky structure; firm; few distinct clay films on faces of peds; common fine prominent yellowish brown (10YR 5/6 and 5/4) Fe masses on ped interiors; few black stains (Fe and Mn oxides); neutral; gradual smooth boundary. (Combined thickness of the Bt horizon is 20 to 48 inches.)
Cg--54 to 70 inches; grayish brown (2.5Y 5/2) silty clay loam; friable; massive; common fine prominent yellowish brown (10YR 5/6 and 5/4) Fe masses on ped interiors; few black stains (Fe and Mn oxides); neutral.
TYPE LOCATION: Scotland County, Missouri; 6 miles north of Memphis; 1,200 feet west and 75 feet north of the southeast corner of sec. 6, T. 66 N., R. 11 W.
RANGE IN CHARACTERISTICS: The thickness of the solum ranges from 40 to 60 inches. The particle size control section averages 45 to 60 percent clay.
The A or Ap horizon has hue of 10YR, value of 2 or 3 moist, 4 or 5 dry, and chroma of 1 or 2. It is strongly acid to neutral.
The E horizon has hue of 10YR, value of 4 or 5, and chroma of 1 or 2. It is strongly acid to neutral.
The Bt horizon has hue of 2.5Y or 10YR, value of 2 or 3, and chroma of 1. It is silty clay or clay. The lower part has hue of 10YR to 5Y, value of 3 to 5 and chroma of 1 or 2. It is clay, silty clay or silty clay loam. Redoximorphic features have hue of 7.5YR or 10YR, value of 3 to 5 and chroma of 4 to 8. Reaction is strongly acid to neutral.
The Cg horizon has hue of 10YR to 5Y, value of 4 or 5 and chroma of 1 or 2. It is slightly acid or neutral.
COMPETING SERIES: These are the Barbert, Chauncey, Crestmeade, Fillmore, Massie, Plankinton, Rolfe, Scott, Sperry and Triplett series. A similar soil is the Putnam series. Barbert, Plankinton and Rolfe series average less than 51 degrees F. at the soil temperature control depth. Chauncey soils have albic horizons more than 10 inches thick. Crestmeade and Triplett series range from 56 to 59 degrees F. at the soil temperature control depth. Fillmore soils are not dry in any part of the soil moisture control section during the 120 days following the summer solstice and commonly have free carbonates at depths of less than 60 inches. Massie soils are not dry in any part of the series moisture control section during the 120 days following the summer solstice. Scott soils are not dry in any part of the soil moisture control for more than 10 days during the 120 days following the summer solstice. Sperry soils average less than 45 percent clay in the particle size control section. Putnam soils have value of 4 or more in the upper part of the Bt horizon.
GEOGRAPHIC SETTING: The Edina soils are on nearly level, summits of hills, and shallow closed depressions on upland divides. Slopes range from 0 to 2 percent. The soils formed in loess. The mean annual temperature ranges from 49 to 54 degrees F., and mean annual precipitation ranges from 32 to 40 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Grundy, Haig Seymour, and Belinda soils. Grundy, Haig and Seymour soils do not have an albic horizon. Belinda soils have value of 4 or more in the upper part of the B horizon. Grundy and Seymour soils commonly are on more sloping areas. Haig and Belinda soils are on similar positions.
DRAINAGE AND PERMEABILITY: Poorly and very poorly drained. Runoff is very slow or slow. Permeability is very slow or slow. The water tables present in most years at undisturbed sites are as follows: Where poorly drained, a perched water table has an upper limit of 0.5-1.5 feet during November to April. Edina soils in shallow depressions are very poorly drained and have a perched water table at +.5 to 1.0 foot and pond water for short periods during February to November.
USE AND VEGETATION: Most areas are used to grow corn, hay, small grain, and soybeans. Native vegetation is prairie grasses.
DISTRIBUTION AND EXTENT: Northcentral and northeastern Missouri and southcentral and southeastern Iowa. The series is of large extent.
MLRA OFFICE RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: Knox County, Missouri, 1907.
REMARKS: Diagnostic horizons and features recognized in this series are: mollic epipedon - the zone from the surface of the soil to a depth of 9 inches, the 18 to 20 inch layer and part of the 20 to 28 inch layer (Ap, Bt and part of the Btg1 horizon); albic horizon - the zone from approximately 9 to 18 inches (E horizon); argillic horizon - the zone from approximately 18 to 54 inches (Bt, Btg1, Btg2 and Btg3 horizons); abrupt textural change - approximately at 18 inches at contact of the E and Bt horizons; aquic soil conditions at a depth of ponding to 1.5 feet.