LOCATION TODDVILLE WIEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, superactive, mesic Typic Argiudolls
TYPICAL PEDON: Toddville silt loam - on a 2 percent slope in a cultivated field at an elevation of about 760 feet. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 10 inches; black (10YR 2/1) silt loam, dark grayish brown (10YR 4/2) dry; weak very fine subangular blocky structure; friable; many fine roots; slightly acid; abrupt smooth boundary. (7 to 10 inches thick)
AB--10 to 20 inches; dark brown (10YR 3/3) silt loam with some areas of brown (10YR 4/3), brown (10YR 5/3) dry; weak fine subangular blocky structure; friable; thin coatings of very dark brown (10YR 2/2) in upper part of horizon; common fine roots; slightly acid; clear wavy boundary. (0 to 10 inches thick)
Bt1--20 to 31 inches; dark yellowish brown (10YR 4/4) silt loam; moderate medium subangular blocky structure; friable; few faint clay films on faces of peds; few fine roots; slightly acid; clear wavy boundary.
Bt2--31 to 41 inches; brown (10YR 5/3) silt loam; moderate medium subangular blocky structure; firm; few fine roots; few faint clay films on faces of peds; common fine prominent strong brown (7.5YR 5/6 and 5/8) masses of iron accumulation; strongly acid; gradual wavy boundary. (Combined thickness of the Bt horizons ranges from 18 to 27 inches.)
2Bt3--41 to 50 inches; brown (10YR 5/3) stratified silt loam, loam, sandy loam, and sand; weak medium subangular blocky structure; friable; few faint clay films on faces of peds; a few manganese oxides as streaks; few organic coatings in worm and root channels; many medium prominent strong brown (7.5YR 5/6 and 5/8) masses of iron accumulation; slightly acid; clear wavy boundary. (7 to 13 inches thick)
3C--50 to 60 inches; brown (10YR 5/3) sand with thin lenses and small pockets of loam, silt loam, and sandy loam near the upper boundary; single grain; loose; few medium prominent strong brown (7.5YR 5/6 and 5/8) masses of iron accumulation; slightly acid.
TYPE LOCATION: La Crosse County, Wisconsin; about 2 miles southwest of Burns; 1,625 feet west and 450 feet south of the northeast corner of sec. 29, T. 17 N., R. 5 W.
RANGE IN CHARACTERISTICS: Thickness of the silty alluvium, depth to the base of the argillic horizon, and depth to sandy alluvium all range from 40 to 60 inches. Thickness of the mollic epipedon ranges from 10 to 20 inches. The particle-size control section averages 18 to 27 percent clay. The content of fine sand or coarser is less than 15 percent to a depth of 40 to 60 inches. The solum and substratum do not have coarse fragments. Reaction commonly ranges from strongly acid to slightly acid throughout the pedon but ranges to neutral in the upper part where the soil is limed. Redox accumulations occur within a depth of 72 inches and commonly occur within 40 inches. Redox depletions with chroma of 2 or less occur below the upper 20 inches of the argillic horizon in some pedons. Saturation occurs at 40 to 72 inches for 1 month or more per year in 6 or more out of 10 years. Saturation occurs within 40 inches in some pedons but is present less than 1 month per year or less than 6 out of 10 years, or both.
The Ap or A horizon has value of 2 or 3 and chroma of 1 to 3.
The AB horizon has chroma of 2 or 3. It is silt loam.
The Bt horizon has hue of 7.5YR, 10YR, or 2.5Y; value of 3 to 5; and chroma of 3 or 4. It is mostly silt loam but subhorizons are silty clay loam in some pedons.
The 2Bt horizon has hue of 7.5YR, 10YR, or 2.5Y value of 4 or 5, and chroma of 3 or 4. Typically it is stratified dominantly with silt loam, loam, fine sandy loam, or sandy loam and has thin strata of coarser texture. In some pedons it is not stratified.
The 3C horizon has hue of 7.5YR, 10YR, or 2.5Y; value of 4 to 8; and chroma of 2 to 6. It is stratified fine sand or medium sand, or the loamy analogs and typically has a few thin strata of finer texture.
COMPETING SERIES: These are the Ashdale, Broadwell, Catlin, Cotter, Dinsdale, Douglas, Elmont, Healing, Lycurgus, Malcolm, Meadowlark, Mendota, Ogle, Plano, Proctor, Richwood, Ripon, Sibley, Sidell, Tama, Tecumseh, Troxel, Wakenda, Waupecan, and Wiota series. Ashdale, Broadwell, Cotter, Douglas, Elmont, Healing, Lycurgus, Malcolm, Meadowlark, Mendota, Ogle, Richwood, Ripon, Sibley, Sidell, and Tecumseh soils do not have a high water table within the series control section. Catlin, Dinsdale, Plano, Tama, and Wakenda soils do not have a horizon with more than 70 percent sand within a depth of 60 inches. Proctor soils have a 2B horizon with more than 15 percent fine sand or coarser within a depth of 40 inches. Troxel and Wiota soils have a mollic epipedon more than 20 inches thick and should be reclassified as Pachic Argiudolls. Waupecan soils have free carbonates within 60 inches.
GEOGRAPHIC SETTING: These soils typically are on stream terraces in unglaciated landscapes, but some are on outwash plains associated with nearby glaciated landscapes. Slope gradient ranges from 0 to 6 percent. These soils formed mostly in silty alluvium and are underlain by sandy alluvium. Mean annual precipitation ranges from 28 to 33 inches. Mean annual temperature ranges from 46 to 51 degrees F. The frost free period ranges from about 140 to 160 days. Elevation ranges from 700 to 1100 feet.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Richwood and Rowley soils. The well drained Richwood soils and the somewhat poorly drained Rowley soils form a drainage sequence with the Toddville soils.
DRAINAGE AND PERMEABILITY: Moderately well drained. Runoff slow or medium. Permeability is moderate in the silty and loamy alluvium and rapid in the sandy alluvium. These soils have a perched seasonal high water table at a depth of 3.5 to 6 feet for 1 month or more per year at some time during the period October to May in 6 or more out of 10 years.
USE AND VEGETATION: Most areas of these soils are cultivated. Principal crops are corn, soybeans, small grain, and hay. Native vegetation is prairie grasses with scattered oak or hickory trees.
DISTRIBUTION AND EXTENT: Southwestern and west-central Wisconsin. This series is of moderate extent.
MLRA OFFICE RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: La Crosse County, Wisconsin, 1957.
REMARKS: Diagnostic horizons and features recognized in this pedon are: mollic epipedon - 0 to 20 inches (Ap, AB); argillic horizon - 20 to 50 inches (Bt1, Bt2, 2Bt3).
ADDITIONAL DATA: Soil Interpretation Record - WI0250.