LOCATION VICK LAEstablished Series
TAXONOMIC CLASS: Fine-silty, siliceous, active, thermic Glossaquic Hapludalfs
TYPICAL PEDON: Vick silt loam on a 0.5 percent slope in loblolly
pine and hardwood woodland.
(Colors are for moist soil unless otherwise
stated.)
A1--0 to 3 inches; dark grayish brown (10YR 4/2) silt loam;
weak fine granular structure; friable; many fine and medium roots;
many fine black concretions; strongly acid; clear smooth boundary.
(3 to 6 inches thick)
A2--3 to 7 inches; pale brown (10YR 6/3) silt loam; common
medium distinct dark grayish brown (10YR 4/2) mottles; weak coarse
subangular blocky structure; friable; many fine and medium roots;
many very fine tubular pores; common fine black concretions; very
strongly acid; clear wavy boundary. (0 to 5 inches thick)
B1--7 to 14 inches; yellowish brown (10YR 5/4) silt loam;
common medium distinct brownish yellow (10YR 6/6) and light
brownish gray (10YR 6/2) mottles; weak medium subangular blocky
structure; friable; many fine and medium roots; many very fine
tubular pores; common fine black concretions; strongly acid; clear
wavy boundary. (5 to 10 inches thick)
B21t--14 to 21 inches; yellowish brown (10YR 5/4) silt loam;
common medium distinct light brownish gray (10YR 6/2) and faint
yellowish brown (10YR 5/6) mottles, common fine prominent red
mottles; moderate medium subangular blocky structure; friable; few
fine and common medium roots; common fine tubular pores; few thin
clay films on surfaces of peds and in pores; few thin silt coats
on surfaces of some peds in lower part; common fine black
concretions; medium acid; clear wavy boundary. (5 to 10 inches
thick)
B&A--21 to 25 inches; light brownish gray (10YR 6/2) silty
clay loam (B2t); common medium distinct yellowish brown (10YR 5/6)
and few medium prominent yellowish red (5YR 5/6) mottles; moderate
fine subangular blocky structure; firm; few fine and common medium
roots; distinct clay films on surfaces of peds; gray (10YR 6/1)
silt coats 1 to 5 mm thick on surfaces of peds make up about 15
percent of horizon (A2); strongly acid; abrupt wavy boundary. (3
to 16 inches thick)
IIB22t--25 to 36 inches; mottled light brownish gray (10YR
6/2) and dark yellowish brown (10YR 4/4) silty clay; moderate
coarse subangular blocky structure; very firm; few medium roots;
few thin clay films on surfaces of peds; few thin gray (10YR 6/1)
silt coats on surfaces of peds in upper part; strongly acid; clear
wavy boundary. (5 to 15 inches thick)
IIB23t--36 to 45 inches; yellowish brown (10YR 5/4) silty
clay loam; many medium distinct light brownish gray (10YR 6/2) and
faint yellowish brown (10YR 5/6) mottles; weak medium subangular
blocky structure; friable; many fine tubular pores; distinct clay
films on surfaces of some peds and in pores; few thin silt coats
on surfaces of some peds; strongly acid; clear wavy boundary. (5
to 15 inches thick)
IIIB3t--45 to 63 inches; brown (10YR 5/3) silt loam; common
medium distinct yellowish brown (10YR 5/6) and faint light
brownish gray (10YR 6/2) mottles; weak medium subangular blocky
structure; friable; many fine tubular pores; few thin patchy clay
films on surfaces of peds; few black web-shaped stains on surfaces
of peds; medium acid. (10 to 30 inches thick)
TYPE LOCATION: Avoyelles Parish, Louisiana; 4 miles south of
Centerpoint, 1.4 miles east of Ruby post office on parish road,
150 feet south on woods trail, 10 feet west of trail. SW1/4NE1/4,
sec. 36, T. 3 N., R. 2 E.
RANGE IN CHARACTERISTICS: The thickness of the solum ranges from
50 to about 80 inches. Depth to clayey IIB horizons ranges from
20 to 35 inches. The A and B horizons above the IIB horizon have
3 to 10 percent total sand content.
The A1 or Ap horizon has hue of 10YR, value of 3 to 5, and chroma
of 2 to 4. The A2 horizon, where present, has hue of 10YR, value
of 5 or 6, and chroma of 3 or 4. Reaction ranges from very
strongly acid to medium acid.
The B1 and B2t horizons have hue of 10YR, value of 5, and chroma
of 4 to 6. Typically, the texture is silt loam, but silty clay
loam is within the range. Reaction ranges from very strongly acid
to medium acid. Mottles in shades of gray and brown range from
few to many.
The B part of the B&A horizon has hue of 10YR, value of 5 or 6,
and chroma of 2 to 4. It is silt loam or silty clay loam. The A
part of the B&A horizon is a grayish uncoated silt.
The IIBt horizons have hue of 7.5YR or 10YR, value of 4 to 6, and
chroma of 2, 4, or 6. It is clay or silty clay in the upper part
and silty clay loam in the lower part. Reaction ranges from very
strongly acid to medium acid.
The IIIBt horizon has hue of 10YR, value of 4 to 6, and chroma of
2 to 6. It is loam, silt loam, or silty clay loam. Reaction
ranges from strongly acid to neutral.
Competing Series: These are the Longview series in the same
family and the Coteau, Egypt, Fred, Frizzell, Glenmora,
Keithville, Kolin, Metcalf, and Vidrine series. Coteau, Egypt,
Fred, Frizzell, Glenmora, and Longview soils lack clayey IIB
horizons. Keithville and Kolin soils do not have low chroma
mottles in the upper 10 inches of the argillic horizon. Metcalf
soils have more than 15 percent sand in all horizons above the
clayey IIB horizon. Vidrine soils have coarse-silty over clayey
control sections and are on mounds.
GEOGRAPHIC SETTING: Vick soils are on nearly level fluvial
terraces of late Pleistocene age. Slopes range from 0 to 2
percent. The soils formed in a thin layer of loess over clayey
and loamy Coastal Plains sediments. The climate is warm and
humid. The mean annual temperature is about 66 degrees F., and
the mean annual rainfall is about 61 inches near the type
location.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Kolin
series, and the Gore, Guyton, McKamie, and Wrightsville series.
Gore and McKamie soils are on sideslopes and have fine textured
control section. Guyton and Wrightsville soils are in shallow
depressions and are dominantly gray throughout the solum.
Drainage and Permeability: Vick soils are somewhat poorly
drained. Runoff is slow and permeability is slow. A perched
seasonally high water table is at a depth of 0.5 to 2 feet for
periods of 8 to 16 weeks during December through April.
USE AND VEGETATION: Most areas of Vick soils are in woodland or
pastureland. Loblolly pine, shortleaf pine, southern red oak,
post oak, and water oak, are dominant. Soybeans are the main crop
grown in areas that are cultivated.
DISTRIBUTION AND EXTENT: Central Louisiana. These soils are not
extensive.
SERIES ESTABLISHED: Avoyelles Parish, Louisiana; 1980.