Soil Survey of Lubbock County, Texas Page: 18
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ing. Contour farming, terraces, and grassed waterways
are necessary to help control excess runoff. Emergency
tillage is sometimes needed to help control soil blowing. A
designed irrigation system and proper application of ir-
rigation water are essential Fertilizer is needed if this
soil is irrigated. Sprinkler irrigation is best adapted. If
surface irrigation is used, bench leveling is needed.
The potential is high for native range plants. Low rain-
fall is the most limiting factor, but yields of short and mid
grasses are good during favorable years. The potential is
medium for wildlife habitat.
The potential is high for urban use. Seepage is the most
restrictive factor. No water-retaining structures should
be built in the soil Slope can also be a problem to small
commercial buildings. The potential is high for recrea-
tional use. Slope restricts the use of some areas as
Capability subclass IVe nonirrigated, IVe irrigated;
Mixedland Slopes range site.
29-Mobeetie fine sandy loam, 5 to 8 percent slopes.
This deep, sloping soil is on uplands along foot slopes and
on alluvial fans. It occurs as long areas that range from
10 to 200 acres. Local shifting of soil by wind is evident in
The 9-inch surface layer is very friable, moderately al-
kaline, brown fine sandy loam that has a few fine caliche
fragments and fine concretions of calcium carbonate.
From 9 to 25 inches is very friable, moderately alkaline,
light brown fine sandy loam that has a few films, threads,
and concretions of calcium carbonate and caliche frag-
ments up to 1 centimeter in diameter. From 25 to 60
inches is friable, moderately alkaline, pink fine sandy
loam that has many films and threads of calcium car-
bonate in the top 21 inches and common films and threads
in the lower part.
This soil is well drained. Surface runoff is medium.
Permeability is moderate, and available water capacity is
medium. The root zone is deep. The hazard of water ero-
sion is severe. The hazard of soil blowing is moderate.
Included in some areas of this soil are spots of Berda
and Potter soils. These included soils make up less than
10 percent of any one mapped area.
This soil is used entirely as range. It is not suitable as
cropland because of slope.
The potential is high for native range plants. Good
management is needed to keep this soil from eroding. The
potential is medium for wildlife habitat
This soil has high potential for most urban use. Slope
and seepage are the most restricting features for sewage
lagoons. Slope restricts use of the soil as a site for small
commercial buildings. The potential is high for most
recreational use. Playgrounds are severely limited by
Capability subclass VIe nonirrigated; Mixedland Slopes
30-Olton clay loam, 0 to 1 percent slopes. This deep,
nearly level soil is on uplands. It occurs as irregularly
shaped areas that range from 10 to several hundred
The 10-inch surface layer is friable, mildly alkaline,
brown clay loam. From 10 to 18 inches is firm, mildly al-
kaline, brown clay loam. From 18 to 30 inches is firm,
moderately alkaline, reddish brown clay loam. From 30 to
42 inches is firm, moderately alkaline, reddish brown clay
loam that has a few visible films and threads of calcium
carbonate. From 42 to 80 inches is friable, moderately al-
kaline clay loam that is pink in the upper 18 inches and
yellowish red in the lower 20 inches (fig. 11).
This soil is well drained. Surface runoff is very slow.
Permeability is moderately slow, and available water
capacity is high. The root zone is deep, but the dense na-
ture of the lower layers tends to impede the movement of
air, water, and roots through the soil. The hazards of
water erosion and soil blowing are slight.
Included in some areas are small areas of Acuff,
Estacado, Lofton, and Pullman soils. Also included are
areas of a soil that is similar to the Olton soil but has a
dark colored layer at a depth of 36 to 60 inches. In some
areas the layer that has a large amount of calcium car-
bonate is more than 60 inches deep. In a few areas the
dark colored surface layer is more than 20 inches thick.
These included soils make up less than 10 percent of any
one mapped area.
Most areas are used as cropland. A few are in native
range plants. Cotton and grain sorghum are the main
crops, but other crops can be grown.
The potential is medium for nonirrigated cotton, grain
sorghum, and wheat and high for irrigated cotton, grain
sorghum, soybeans, and wheat. Keeping crop residue on
or near the surface conserves moisture and protects the
soil against water erosion and soil blowing. Emergency
tillage is sometimes needed to help control soil blowing.
Fertilizer is needed if this soil is irrigated. A designed ir-
rigation system and proper application of irrigation water
are essential. Either surface or sprinkler irrigation can be
The potential is medium for native range plants. Low
rainfall produces moderate yields of short and mid
grasses during favorable years. The potential is medium
for wildlife habitat.
The potential is medium for most urban and recrea-
tional use. This soil is corrosive to uncoated steeL It
shrinks and swells as the moisture content changes, and it
is too clayey, has low strength, and has slow water per-
colation. Structures should be designed well enough to
withstand the adverse effects of these problems.
Capability subclass IIIe nonirrigated, Ile irrigated;
Clay Loam range site.
31-Olton clay loam, 1 to 3 percent slopes. This deep,
gently sloping soil is on uplands, mainly around playas
and along drainageways. Mapped areas are irregularly
shaped and range from 10 to more than 100 acres.
The surface layer is friable, mildly alkaline, brown clay
loam about 8 inches thick. From 8 to 24 inches is firm,
mildly alkaline clay loam that is dark reddish brown in
the upper 8 inches and reddish brown in the lower 8
inches. From 24 to 38 inches is firm, moderately alkaline,
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Blackstock, Dan A.; Blakley, Earl R.; Landers, Clifford R.; Koos, William M. & Putnam, Lee A. Soil Survey of Lubbock County, Texas, book, 1979; Washington D.C.. (texashistory.unt.edu/ark:/67531/metapth130232/m1/29/: accessed June 21, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting UNT Libraries Government Documents Department.