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Eufaula soil and landscape

Soil profile: Profile of Eufaula loamy fine sand. Lamellae begin to occur at a depth of about 90 centimeters. The Bt part (lamellae) of the E&Bt horizon is strong brown, yellowish red, or red. Texture is fine sand or fine sandy loam. The lamellae are thin, wavy, and generally horizontally continuous. (Soil Survey of Robertson County, Texas; by Harold W. Hyde, Natural Resources Conservation Service)

 

Landscape: Horses grazing on improved bermudagrass in an area of Eufaula loamy fine sand, 1 to 5 percent slopes. Eufaula soils are dominantly used for range. Considerable amounts of Eufaula soils with a the loamy fine sand surface on lesser slopes are cropped to sorghums, small grains, and peanuts; or used for tame pastures. Native vegetation is post oak and blackjack oak with an understory of mid and tall grasses.

 

SETTING:

Landform: Stream terrace

Landscape position: Broad, smooth areas

Slope: Very gently sloping or gently sloping; convex surfaces

Shape of areas: Elongated or irregular

Size of areas: 20 to 200 acres

Typical Profile

Surface layer:

0 to 7 inches—brown, moderately acid loamy fine sand

Subsurface layer:

7 to 15 inches—pale brown, moderately acid loamy fine sand

15 to 31 inches—very pale brown, moderately acid loamy fine sand

Subsoil:

31 to 80 inches—very pale brown, strongly acid loamy fine sand that has lamellae of strong brown fine sandy loam

 

Soil Properties

Depth: Very deep

Drainage class: Somewhat excessively drained

Water table: None within a depth of 6 feet

Flooding: None

Runoff: Negligible

Permeability of most restrictive layer within a depth of 60 inches: Rapid

Available water capacity: Low

Root zone: Very deep

Natural soil fertility: Low

Shrink-swell potential: Low

Hazard of water erosion: Moderate

Composition

Eufaula soil and similar inclusions: 80 to 90 percent

Contrasting inclusions: 10 to 20 percent

 

Use and Management

Major land use: Rangeland

Other land uses: Pastureland and cropland

Pasture

Major limitations:

• The low available water capacity limits the growth of improved grasses during periods of drought.

• Because of the rapid permeability of the soil, there is a high rate of leaching and a more costly fertilization program is required.

• Seepage is a problem for livestock ponds, and construction is not recommended.

Minor limitations:

• Water erosion is a moderate hazard during seedbed preparation for improved grasses.

 

Cropland

Major limitations:

• Because of the low available water capacity, this soil poorly is suited to most crops. The soil, however, is suited to the production of watermelons and peanuts.

Minor limitations:

• Water erosion is a moderate hazard when this soil is cultivated.

• When dry, the soil is loose and provides poor traction for farm machinery.

 

Rangeland

Major limitations:

• The low available water capacity limits the growth of native plants during periods of drought.

• The low natural fertility limits the yield potential of native plants.

• Seepage is a problem for livestock ponds, and construction is not recommended.

 

Interpretive Groups

Land capability classification (nonirrigated areas): 4s

Ecological site: Deep Sand

Pasture management group: Very Deep Sandy

 

For additional information about the survey area, visit:

www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/texas/TX395/0/...

 

For a detailed description, visit:

soilseries.sc.egov.usda.gov/OSD_Docs/E/EUFAULA.html

 

For acreage and geographic distribution, visit:

casoilresource.lawr.ucdavis.edu/see/#eufaula

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Uploaded on February 22, 2011
Taken in January 2000