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<br />SOIL 3URVEY
<br />In a representative profile the surface layer is light
<br />brownish-gray silt loam about 4 inches thick. The sub-
<br />surface layer is light brownish-gray 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 are moderately
<br />alkaline. Their root zone extends to a depth of more
<br />than 60 inches. These soils are used for grazing and
<br />for dryland and irrigated crops.
<br />Representative profile of Manuel silt loam, 1 to 6
<br />percent elopes, in grass, 220 feet south and 1,100
<br />feet west of the northeast corner of sec. 25, T. 21 S.,
<br />R. 66 W.
<br />AID to 4 inches, light bmwniab-gray pDYR 6/2) silt
<br />loam, dark grayish brown (lOYR 4/2) when moist;
<br />weak, granular atrurture; soft very friable; nottaticky
<br />and slightly plastic; calcareous; moderately alkaline;
<br />clear, smooth boundary.
<br />AC--d to 9 inches, light brownish-gray (lOYR 6/2) silt
<br />clear, smooth boundary.
<br />pale brawn (lOYR 7/3 silt
<br />Wllev moist; Very Weal(, m~
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<br />The A horizon ranges from loam to silty clay loam. The
<br />AC and C horizons range 3ram silt loam to silty aey loam.
<br />The structuze of the AC and Cl horizons is very seek Lo
<br />moderate. Rard limestone rock or soft marl is at s depth
<br />of 90 inches to ceveral feet.
<br />MaA-Manuel 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 />800 acres.
<br />Included with this soil in mapping are areas of Kim
<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 i8 slow. The hazard of erosion is slight in
<br />irrigated areas, and the hazard of soil blowing is
<br />moderate in nonirrigated 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, Ballets, sand drop-
<br />seed, yucca, and cactus. Capability units I, irrigated,
<br />and VIe-1, nonirrigated; Loamy Plains range site.
<br />MaB-Manuel silt loam, 1 to 5 percent sloDea. This
<br />soil makes up about 28 percent of the survey area.
<br />It occurs in al] parts of the survey area, except far
<br />the wooded section and the northeastern part of
<br />Pueblo County. The slope is mostly 3 percent or leas.
<br />The areas are irregular in 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 below limestone escarpments.
<br />Runoff is moderate, and the hazard of erosion ie
<br />moderate.
<br />This soil is well suited to grazing. The native vegeta-
<br />tion is mainly blue grams, galleta, western wheatgraes,
<br />and winterfat. Capability unite IIIe-2, irrigated, and
<br />VIe-1, nonirrigated; Loamy Plains range site.
<br />Mg-Manuel silt loam, Bullied. This soil is mostly in
<br />the central part of Pueblo County. The areas are long
<br />and narrow and cover as much as 80 acres. They are
<br />dissected by deep gullies that have short, shallow,
<br />branching gullies,
<br />Included with this soil in mapping are areas of
<br />Shingle soils that make up about 20 percent oY the
<br />acreage.
<br />Runoff is moderate, and the hazard of erosion ie
<br />moderate.
<br />Gully erosion makes range seeding difficult. Cap-
<br />ability unit VIIe-1, nonirrigated; not in a range site.
<br />Mn-Manuel silt loam, wet. This is a moderately well
<br />drained, loamy soil. The slope is mostly 0 to 1 percent.
<br />The areas cover as much as 700 acres. This soil has a
<br />profile similar to the one described as representative
<br />of the aeries, but it is saturated with water below a
<br />depth of 55 inches. It also has a low to high concentra-
<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 />Minnequa 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 />This soil is used mostly for pasture. The native vege-
<br />tation is mainly alkali sacaton, inland saltgrass, and
<br />kochia. Capability unit VIw-1, nonirrigated; Salt
<br />Meadow range site.
<br />Manzanola Series
<br />The Manzanola series consists of deep, well-drained
<br />soils. These soils farmed on terraces and alluvial fans
<br />in clayey alluvium that was derived from sedimentary
<br />rock. The elope is 0 to 9 percent, and elevation is_ 4,300
<br />to 5,800 feet. The average annual precipitation is 12
<br />inches. The average annual temperature is 63° F, and
<br />the frosbfree season is 145 to 175 days. The native
<br />vegetation is mainy plains grasses.
<br />In a representative profile the surface layer is light
<br />brownish-gray 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-brown 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 high. The surface layer and 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 profile of Manzanola silty clay loam,
<br />0 to 2 percent slopes, in grass, 0.25 mile east and 100
<br />feet south of the center of sec. 17, T. 22 S., R. 63 W.
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