Soil Survey of McHenry County, Illinois Part I - Soil Data Mart

McHenry County, Illinois—Part I 63
Composition
Herbert and similar soils: 85 percent
Dissimilar soils: 15 percent
Similar soils:
• soils that contain more sand in the upper one-half of
the subsoil
• soils that contain carbonates at a depth of more
than 40 inches
• soils that are overlain by recent, light-colored
deposition
• soils that have a lighter colored surface layer
• soils that have a darker subsurface layer
Dissimilar soils:
• the moderately well drained Kidami and well
drained Octagon soils in the higher positions on the
landform
• the poorly drained Pella soils in drainageways
Management
For general and detailed information about
managing this map unit, see the following sections in
Part II of this publication:
• “Agronomy” section
• “Forestland” section
• “Wildlife Habitat” section
• “Engineering” section
• “Soil Properties” section
Hoopeston Series
Drainage class: Somewhat poorly drained
Permeability: Moderately rapid in the upper part and
rapid in the lower part
Landform: Outwash plains and stream terraces
Parent material: Loamy and sandy outwash
Slope range: 0 to 2 percent
Taxonomic classification: Fine-loamy, mixed, mesic
Aquic Hapludolls
Typical Pedon for MLRA 95B
Typical pedon of Hoopeston sandy loam, 0 to 2
percent slopes, 1,175 feet south and 2,250 feet west
of the northeast corner of sec. 4, T. 43 N., R. 5 E.
Ap—0 to 6 inches; black (10YR 2/1) sandy loam, dark
grayish brown (10YR 4/2) dry; moderate fine
granular structure; very friable; common very fine
roots; neutral; abrupt smooth boundary.
A—6 to 14 inches; black (10YR 2/1) sandy loam, dark
grayish brown (10YR 4/2) dry; moderate fine and
medium granular structure; very friable; common
very fine roots; neutral; abrupt smooth boundary.
BA—14 to 18 inches; brown (10YR 4/3) sandy loam;
moderate fine subangular blocky structure; very
friable; common very fine roots; few distinct very
dark gray (10YR 3/1) organic coatings on faces of
peds and in pores; common fine dark reddish
brown (5YR 3/4) very weakly cemented iron oxide
concretions throughout; common fine faint dark
grayish brown (10YR 4/2) iron depletions in the
matrix; neutral; clear smooth boundary.
Bw1—18 to 24 inches; brown (10YR 5/3) sandy loam;
moderate fine subangular blocky structure; very
friable; common very fine roots; common fine
yellowish red (5YR 4/6) very weakly cemented
iron oxide concretions throughout; common fine
and medium faint grayish brown (10YR 5/2) iron
depletions in the matrix; slightly alkaline; gradual
wavy boundary.
Bw2—24 to 34 inches; grayish brown (10YR 5/2)
sandy loam; moderate fine and medium
subangular blocky structure; very friable; common
very fine and fine roots; common fine dark reddish
brown (5YR 3/4) and yellowish red (5YR 4/6) very
weakly cemented iron oxide concretions
throughout; common fine and medium faint light
brownish gray (10YR 6/2) iron depletions in the
matrix; slightly alkaline; gradual wavy boundary.
BC—34 to 38 inches; 60 percent grayish brown (10YR
5/2) and 40 percent brown (10YR 5/3) sandy
loam; weak fine and medium subangular blocky
structure; very friable; few very fine roots;
common fine yellowish red (5YR 4/6) very weakly
cemented iron oxide concretions throughout;
slightly alkaline; clear wavy boundary.
C—38 to 60 inches; 40 percent yellowish brown
(10YR 5/4), 30 percent grayish brown (10YR 5/2),
and 30 percent yellowish brown (10YR 5/6) loamy
sand; massive; very friable; common fine
yellowish red (5YR 4/6) and dark reddish brown
(5YR 3/3) very weakly cemented iron oxide
concretions throughout; slightly alkaline.
MLRA Series Range in Characteristics
Thickness of the mollic epipedon: 10 to 18 inches
Depth to carbonates: Greater than 40 inches
Thickness of the solum: 22 to 48 inches
Ap or A horizon:
Hue—10YR
Value—2 or 3
Chroma—1 to 3
Texture—sandy loam, fine sandy loam, or loam
Bw horizon:
Hue—10YR or 2.5Y
Value—4 to 6