|
<br />z2
<br />SOIL SURVEY
<br />In a representative profile the surface layer is light
<br />UL•ownish-gray silt loam about 4 inches thick. The sub-
<br />surface layer is light bt•ownislt-gt•ay silt loam about
<br />5 inches thick. The underlying material is very pale
<br />brown silt loam that extends to a depth of 60 inches
<br />or more.
<br />Permeability is moderately slow, and the available
<br />water capacity is high. These soils at•e moderately
<br />alkaline. Theit• toot zone extends to a depth of more
<br />than 60 inches. These soils are used for grazing and
<br />fot• dryland and irrigated crops.
<br />Representative profile of Manuel silt loam, 1 to 5
<br />percent slopes, in grass, 220 feet south and 1,100
<br />feet west of the northeast corner of sec. 25, T. 21 S.,
<br />R. 66 ~V.
<br />Al-0 to 9 inches, light brownish-gray (lOYR G/2) silt
<br />loam, dark grayish brown (lOYR 412) when moist;
<br />weak, granular structure; soft, very friable; nonsticky
<br />and slightly plastic; calcareous; moderately alkaline;
<br />clear, smooth boundary.
<br />AC-4 to 9 inches, light brownish-gray (lOYR G/2) silt
<br />loam, dark grayish brown (lOYR 4/2) when moist;
<br />weak, ntediunt, prismatic structure; slightly hard, very
<br />friable; nonsticky and slightly plastic; calcareous;
<br />moderately alkaline; clear, smooth boundary.
<br />Cl-9 to 15 inches, very pale brown (IOXR 7/3) silt loam,
<br />brown (lOYR 5/3) when moist; very weak, medium,
<br />subangular blocky structure; hard, friable; nonsticky
<br />and slightly plastic; calcareous; small, rounded masses
<br />of lime; moderately alkaline; gradual, smooth boundary.
<br />C2-15 to GO inches, very pale brown (l0Y-R 7/3) silt loam,
<br />brown (LOY-R 5/3) when moist; massive; slightly hard,
<br />very friable; nonsticky and slightly plastic; calcareous;
<br />moderately alkaline.
<br />The A horizon ranges from loam to silty clay loam. The
<br />AC and C horizons range 3'rom silt loam to silty clay loam.
<br />The structure of the AC and Cl horizons is very weak to
<br />moderate. Hard limestone rock or soft marl is at a depth
<br />of 40 inches to several feet.
<br />11IaA-1llanvel silt loam, 0 to 1 percent slopes. This
<br />soil is on terraces, mesas, and nearly level plains in
<br />the central and eastern parts of Pueblo County. The
<br />areas are irregular in shape and cover as much as
<br />600 acres.
<br />Includec] with this soil in mapping are areas of I{im
<br />fine sandy loam that are mostly on terraces of the
<br />Arkansas River. These areas make up about 15 per-
<br />cent of the acreage.
<br />Runoff is slow. The hazard of erosion is slight in
<br />irrigated areas, and the hazard of soil blowing is
<br />moderate in nmtirrigated areas.
<br />This soil is well suited to irrigated corn, sorghum,
<br />small grain, alfalfa, vegetables, and grasses. The native
<br />vegetation is mainly blue grams, galleta, sand drop-
<br />seed, yucca, and cactus. Capability units I, irrigated,
<br />and VIe-1, nonirrigated; Loamy Plains range site.
<br />DIaB-~Ianvel silt loam, 1 to 5 percent slopes. This
<br />soil makes up about 26 percent of the survey area.
<br />It occut•s in all parts of the sut•vey area, except fnr
<br />the wooded section and the northeastet•tt part of
<br />Pueblo Cattnty. The slope is mostly 3 percent or less.
<br />The at•eas are irregular itt shape and cover as much as
<br />200 acres. This soil has the profile described as repre-
<br />sentative of the series.
<br />Included with this soil in mapping are areas of
<br />Minnequa and Kim soils that make up about 10 per-
<br />cent each of the acreage. The Kim soils are mostly on
<br />side slopes belocv limestone escarpments.
<br />Runoff is moderate, and the hazard of erosion is
<br />moderate.
<br />This soil is well suited to grazing. The native vegeta-
<br />tion is mainly blue gt•ama, ga]leta, western wheatgrass,
<br />a»d tvitttet•fat. Capability units IIIe-2, irrigated, and
<br />VIe-1, nonirrigated; Loamy Plains range site.
<br />lllg-Manuel silt loam, gullied. Tltis soil is mostly in
<br />the central part of Pueblo County. The areas are long
<br />and narrow and cover as mach as 80 acres. They at•e
<br />dissected by deep gullies that have short, shallow,
<br />branching gullies.
<br />Included with this soil itt mapping are areas of
<br />Shingle soils that make up about 20 pet•cent of the
<br />act•eage.
<br />Runoff is moderate, and the hazard of et•osion is
<br />moderate.
<br />Gully erosio» makes range seeding difficult. Cap-
<br />ability writ VIIe-1, nonirrigated; not in a range site.
<br />bin-blanvel silt loam, wet. This is a moderately well
<br />dt•ained, loamy soil, The slope is mostly 0 to 1 pet•cent.
<br />The at•eas covet• as much as 700 acres. This soil has a
<br />profile similat• to the otte described as representative
<br />of the series, but it is saturated with water below a
<br />depth of 55 inches. It also has a low to high cottcetttt•a-
<br />tion of salts at the surface and small threads and
<br />seams of salts in the upper 16 inches.
<br />Included with this soil in mapping are areas of
<br />Dinnequa soils. These areas have water perched on the
<br />underlying bedrock that is within a depth of 40 inches.
<br />They make up about 5 percent of the acreage.
<br />Tltis soil is used mostly fot• pastut•e. The native vege-
<br />tation is mainly alkali sacaton, inland saltgrass, and
<br />kochia. Capability unit Vhv-1, nonirl•igated; Salt
<br />Meadow range site.
<br />blanzanola Series
<br />The Manzanola series consists of deep, well-drained
<br />sails. These soils formed on terraces and alluvial fans
<br />in clayey alluvium that was derived from sedimentary
<br />rock. The slope is 0 to 0 percent, and elevatimt is 4,300
<br />to 5,800 feet. The average annual precipitatiwt is 12
<br />inches. The average annual temperature is 53° F, and
<br />the frost-free season is 145 to 175 days. The native
<br />vegetation is mainly plains grasses.
<br />In a representative profile the surface layer is light
<br />brownish-grav silty clay loam about 4 inches thick.
<br />The upper part of the subsoil is grayish-brown and
<br />pale-brown heavy clay loam about 16 inches thick, and
<br />the lower part is pale-bt•own silty clay loam about 14
<br />inches thick. The underlying material is pale-brown
<br />clay loam that extends to a depth of 60 inches or more.
<br />Permeability is slow, and the available water capac-
<br />ity is }sigh. The surface layet• attd subsoil are moder-
<br />ately alkaline, and the underlying material is moder-
<br />ately alkaline or strongly alkaline. The root zone ex-
<br />tends to a depth of more titan 60 inches. These soils
<br />are used for grazing.
<br />Representative p1•ofile of Manzatto]a silty clay loam,
<br />0 to 2 pet•cent slopes, in grass, 0.25 mile east and 100
<br />feet south of the center of sec. 17, T. 22 S., R. 63 ~'V.
<br />
|