Soil Survey of Karnes County, Texas Page: 63
This book is part of the collection entitled: Texas Soil Surveys and was provided to The Portal to Texas History by the UNT Libraries Government Documents Department.
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Karnes County, Texas
and improved pasture. A few areas are used as habitat
for wildlife or cropland.
Native plants yield moderate amounts of forage.
Proper stocking rates, controlled grazing, and brush
management can help improve or maintain soil
productivity.
Improved varieties of bermudagrass, bluestems,
and kleingrass are the major pasture grasses grown
on this soil. Forage yields are moderate. The rate of
runoff is a limitation. The clayey texture makes this soil
difficult to work, especially when preparing a seedbed.
Fertilizer applications, weed control, brush
management, proper stocking rates, and controlled
grazing can help conserve moisture and improve or
maintain soil productivity.
This soil has fair potential as openland and
rangeland wildlife habitat. The clayey texture limits the
plant growth necessary for good habitat.
Wheat and corn are the major crops grown on this
soil and moderate to high yields are possible. The
medium rate of runoff and a moderate hazard of water
erosion limit the use of this soil as cropland. The
clayey texture restricts root development. Fertilizer
applications, reduced tillage, high residue and cover
crops, and crop residue management can help reduce
soil temperature, conserve moisture, improve or
maintain soil tilth and productivity. Terraces, contour
farming, grassed waterways, and diversion terraces,
where needed, can help reduce runoff and erosion.
This soil is poorly suited to urban uses. The very
slow permeability and clayey texture are severe
limitations for septic tank absorption fields and trench
sanitary landfills. The shrink-swell potential, low
strength, and potential for corrosion of uncoated steel
are severe limitations for building site development.
This soil is moderately suited to recreational uses.
The very slow permeability, clayey texture, and slope
are moderate limitations.
This Rosenbrock soil is in capability subclass lie
and in the Rolling Blackland range site.
Rr-Rosenbrock clay, rarely flooded
This deep, nearly level, well drained soil is on plane
to slightly concave surfaces on flood plains. Slopes are
less than 1 percent. Areas are irregularly shaped
bands that are parallel and adjacent to stream
channels. They range from 120 to 150 acres in size.
The typical sequence, depth, and composition of
the layers of this soil are as follows-
Surface layer
0 to 13 inches, very dark gray, slightly alkaline claySubsoil
13 to 24 inches, very dark gray, slightly alkaline clay
24 to 45 inches, dark gray, moderately alkaline clay
45 to 55 inches, light brownish gray, moderately
alkaline silty clay
Underlying material
55 to 80 inches, very pale brown, moderately alkaline,
weakly consolidated tuffaceous siltstone that has
silt loam texture
Important soil properties-
Available water capacity: high
Permeability: very slow
Drainage class: well drained
Runoff low
Root zone: deep
Shrink-swell potential: high
Hazard of water erosion: slight
Hazard of wind erosion: slight
Hazard of flooding: can occur 1 year out of 20 for brief
periods after heavy rainfall, generally in spring and
fall
Included with this soil in mapping are small areas of
Rosenbrock soil where flooding does not occur and
small areas where slopes are more than 1 percent.
Also included are small areas of Clareville, Eloso, and
Monteola soils. The Clareville soil has a loamy surface
layer and is in positions on the landscape similar to
slightly higher than those of the Rosenbrock soil. The
Eloso soil is moderately deep and is in higher
positions. The Monteola soil has slickensides and is in
higher positions on the landscape. Included soils make
up less than 5 percent of this map unit.
This Rosenbrock soil is used mainly as rangeland
and habitat for wildlife. A few areas are used as
improved pasture.
Native plants yield moderate amounts of forage.
Proper stocking rates, controlled grazing, and brush
management can help improve or maintain soil
productivity.
This soil has fair potential as openland and
rangeland wildlife habitat. The clayey texture and
hazard of flooding limit the growth of grain and seed
crop plants, and the clayey texture limits the growth of
shrubs and wild herbaceous plants necessary for
good habitat.
Improved varieties of bermudagrass, bluestems,
and kleingrass are the major pasture grasses grown
on this soil. Forage yields are moderate. The clayey
texture makes this soil difficult to work, especially
when preparing a seedbed. Fertilizer applications,
weed control, brush management, proper stocking63
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General Soil Map, Karnes County, Texas (Map)
Map displays soil types along with creeks, towns, schools, churches, power transmission lines, oil and gas pipelines, roads, and railroads. Includes legend and symbols. Scale 1:253,440
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United States. Soil Conservation Service. Soil Survey of Karnes County, Texas, book, 1999; Washington D.C.. (https://texashistory.unt.edu/ark:/67531/metapth130226/m1/63/?q=tex-land: accessed July 9, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.