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<br />AII-O to 4 inches, pale-brown (lOYR 6/3) loamy sand,
<br />dark grayish brown (IOYR 4/2) when moist;
<br />weak, coarse, crumb structure that parts to
<br />single grain; loose when dry or moist; non-
<br />calcareous; clear, smooth boundary.
<br />A12--4 to 11 inches. brown (lOYR 5/3) loamy sand,
<br />dark brown (lOYR 4/3) when moist; weak, coarse,
<br />crumb structure that parts to single grain;
<br />loose when dry or moist; noncalcareous; clear,
<br />'Navy bounda-ry ~
<br />AC--ll to 18 inches, brown (lOYR 5/3) loamy sand,
<br />dark brown (lOYR 4/3) when moist; weak, me-
<br />dium, subangular blocky structure; slightly
<br />hard when dry, very friable when moist; nOTI-
<br />calcareous; clear, wavy boundary.
<br />Cl--18 to 25 inches, light yellowish-brown (IOYR
<br />6/4) loamy sand, brown (IOYR 4/3) when moist;
<br />single grain; loose when dry or moist; strong-
<br />ly calcareous; clear, wavy boundary.
<br />C2ca--25 to 42 incnes, very pale brown (lOYR 7/4)
<br />loamy sand, yellowish brown (lOYR 5/4) when
<br />moist; single grain; slightly hard when dry,
<br />very friable when moist; very strongly cal-
<br />careous; clear, SIDoot'n boundary.
<br />C3--42 to 60 inches, very pale brown (lOYR 7/4)
<br />loamy sand, yellowish brown (lOYR 5/4) when
<br />moist; massive; slightly hard when dry, very
<br />friable when moist; very strongly calcareous.
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<br />The thickness of the A hori zon ranges from 5 to
<br />12 inches. The texture of the C horizon ranges from
<br />loamy sand to sand. In some places these soilS are
<br />calcareous at the surface, but in most places they
<br />are leached to a depth of 12 to 20 inches.
<br />Dwyer soils are associated with Vona and Otero
<br />soils. They are more sandy than those soils.
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<br />Dwyer loamy sana (1 to 9 percent slopes) (Ow) .--
<br />This soil has the profile described as typical for
<br />the series. Most areas of it lie just east of the
<br />Apishapa River in the west-central part of the
<br />county. Some areas are as much as 1,000 acres in
<br />size.
<br />The principal inclusion is Vona sandy loam, 1
<br />to 5 percent slopes.
<br />This soil is so porous that all of the rainwater
<br />enters it. It has no drainage pattern and is sub-
<br />ject to little haz~rd of water erosion, but the haz-
<br />ard of wind erosion is severe. Blowouts can develop
<br />around stock-watering places, on vehicle or stock
<br />trails, or in areas severely overgrazed.
<br />All of the acreage is used as range. The major
<br />management problem is to keep the range in good
<br />enough condition that it will not be invaded by
<br />weeds or excessive amounts of sagebrush. These
<br />plants sap the moisture needed by the deep-rooted,
<br />native, mid-tall grasses. (Nonirrigated capability
<br />unit VIe-5; Deep Sands range site)
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<br />Glenberg Series
<br />
<br />The Glenberg series consists of somewhat exces-
<br />sively drained, nearly level sandy loams or loamy
<br />
<br />sands on low terraces of rivers and creeks. These
<br />soils are occasionally flooded.
<br />In a typical profile the surface layer, about 6
<br />inches thick, is light brownish-gray, loose loamy
<br />fine sand. The upper 30 inches of the substratum
<br />is pale-brown or light brownish-gray stratified
<br />loamy fine sand and fine sandy loam. It is loose
<br />or slightly hard when dry and very friable when
<br />moist. The underlying material is pale-brown sand.
<br />The derth to the underlying sand ranges from about
<br />15 to 50 inches.
<br />These soils have a rapid intake rate, little sur-
<br />face runoff, and moderately rapid permeability.
<br />They are moderate to low in fertility and easily
<br />leached of plant nutrients. Wind erosion is a haz-
<br />ared if these soils are cultivated.
<br />~bst of the acreage is used as range. The native
<br />vegetation is mainly western wheatgrass, sand drop-
<br />seed, inland saltgrass, cottonwood trees, tamarisk,
<br />and weeds.
<br />Typical profile of Glenberg loamy fine sand, 0
<br />to 1 percent slopes, in an area of river-bottom
<br />range, 0.15 mile north and 0.10 mile east of the
<br />cent.eT of sec. 2%, T. 22 S., R. 57 W.
<br />
<br />Al--O to 6 inches, light brownish-gray (IOYR 6/2)
<br />loamy fine sand, dark grayish brown (IOYR 4/2)
<br />when moist; weak to moderate, medium, platy
<br />structure; loose when dry, very friable when
<br />moist; roots abundant; strongly calcareous;
<br />clear, smooth boundary.
<br />Cl--6 to 14 inches, pale-brown (lOYR 6/3) loamy
<br />fine sand, d.rk grayish brown (IOYR 4/2) when
<br />moist; weak, thick, platy structure that parts
<br />to weak, medium, subangular blocky; loose
<br />when dry, vel)' friable when moist; roots com-
<br />mon; common, medium, faint, yellowish-brown
<br />(lOYR 5/4) mottles; strongly calcareous; clear,
<br />wavy boundary.
<br />C2--14 to 28 inches, light brownish-gray (IOYR 6/2)
<br />fine sandy loam, dark grayish brown (lOYR 4/2)
<br />when moist; very weak, medium, subangular
<br />blocky structure; slightly hard when dry, very
<br />friable when moist; roots common to depth of
<br />20 inches; strongly calcareous; abrupt, smooth
<br />boundary.
<br />C3--28 to 36 inches, light brownish-gray (IOYR 6/2)
<br />fine sandy loam; dark grayish brown (lOYR 4/2)
<br />when moist; structureless; slightly hard when
<br />dry, very friable when moist; strongly calcar-
<br />eous; abru~t~ smooth boundary.
<br />C4--36 to 60 inches, pale-brown (IOYR 6/3) sand;
<br />dark grayish brown (lOYR 4/2) when moist;
<br />structureless; loose when dry or moist; strong-
<br />ly cal careous .
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<br />The A horizon ranges from about 4 to 12 inches in
<br />thickness and from loamy sand to sandy loam in tex-
<br />ture. In places the C horizon contains strata of
<br />grayish-brown silty clay loam up to 2 inches thick.
<br />Glenberg soils are associated with Bankard, Las
<br />Animas, and Rocky Ford soils. They are not so sandy
<br />as the Bankard soils or the poorly drained Las
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