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<br />Animas soils, but they are more sandy than Rocky
<br />Ford soils.
<br />
<br />Glenberg loamy fine sand, 0 to 1 percent slopes
<br />(GbA) ,--This soil has the profile described as
<br />typical for the series. Areas of it range from
<br />about 10 to 200 acres in size.
<br />The surface layer of this soil is droughty, but
<br />the sandy material below a depth of about 30 inches
<br />is usually moist. Water is available for deep-
<br />rooted plants such as alfalfa.
<br />Presently this soil is not very productive of
<br />range forage because of drought and a high propor-
<br />tion of cottonwoods, brush, and weeds. It can be
<br />more productive if leveled, cleared, and converted
<br />to nonirrigated or irrigated pasture. All locally
<br />adapted crops can be grown if there is adequate
<br />water and if erosion is controlled. Where irrigated
<br />this soil requires frequent light irrigation. '
<br />(Irrigated capability unit IIIe-9; nonirrigated ca-
<br />pability unit VIe-6; Sandy Bottomland range site)
<br />
<br />Glenberg-Bankard sandy loarns, 0 to 1 percent
<br />slopes (GkA) .--This complex is located on low river
<br />terraces in areas up to 80 acres in size. About
<br />75 percent of each area is Glenberg sandy loam, and
<br />2S percent is Bankard sandy loarn.
<br />The Glenberg soil in this complex has a profile
<br />similar to that described for the series but the
<br />. .
<br />surface layer 1S sandy loam. The Bankard soil has
<br />a profile similar to that described for the Bankard
<br />series but has a surface layer of sandy loam 2 to
<br />6 inches thick.
<br />The soils in this complex are droughty and low in
<br />fertility. In places they are occasionally flooded.
<br />The native vegetation, made up of sand dropseed,
<br />blue grama, cottonwoods, and tamarisk is not pro-
<br />ductive,because of the droughtiness. 'When farmed,
<br />these soils have a high wind eros ion hazard and re-
<br />quire frequent irrigation. (Irrigated capability
<br />unit IVs-7; nonirrigated capability unit VIe-6;
<br />Sandy Bottomland range site)
<br />
<br />Harvey Series
<br />
<br />The Harvey series consists of deep, well-drained,
<br />gently sloping loarns on the uplands. They are ex-
<br />tensive soil~ in the non irrigated part of the county
<br />but are of IDlnor extent in the irrigated part.
<br />In a typical profile the surface layer, about 5
<br />inches thick, is grayish-brown loam that is soft
<br />when dry and friable when moist. The loam subsoil,
<br />about 11 inches thick, is brown in the upper part
<br />and pale brown in the lower part. It is hard when
<br />dry but very friable when moist. The material below
<br />a depth of about 16 inches is very pale brown loam
<br />that grades to sandy loam. This layer contains an
<br />abundance of lime in the fonn of soft white nodules
<br />and streaks in the soil material and as coatings
<br />on the surface of pebbles.
<br />Harvey soils have a moderate intake rate, and
<br />~urface runoff is moderate to slow. Permeability
<br />1S moderate. Under native grass, the erosion hazard
<br />
<br />12
<br />
<br />is slight, but overuse of the range increases the
<br />rate of runoff and the rate of sheet erosion.
<br />This acreage is used almost entirely as range.
<br />The native vegetation is mainly blue grama, galleta,
<br />and buffalograss. A few areas lie wi thin the irri-
<br />gated area and are seeped. Here, sacaton and salt
<br />grasses are dominant.
<br />Typical profile of Harvey loam in an area of
<br />native range, 0.4 mile north and 150 feet west of
<br />the southeast comer of sec. 36, T. 23 S., R. 57 w.
<br />
<br />Al--O to 5 inches, grayish-brown (lOYR 5/2) loam,
<br />dark grayish brown (lOYR 4/2) when moist;
<br />weak, medium, platy structure that parts to
<br />weak, medium, crumb; soft when dry, friable
<br />when moist; noncalcareous; abrupt, smooth
<br />boundary.
<br />B2--5 to 8 inches, brown (lOYR 5/3) loam, dark brown
<br />(lOYR 4/3) when moist; moderate, coarse, sub-
<br />angular blocky structure; hard when dry, very
<br />friable when moist; noncalcareous; clear,
<br />smooth boundary.
<br />83--8 to 16 inches, pale-brown (lOYR 6/3) loam,
<br />brown (IOYR 5/3) when moist; weak, coarse,
<br />subangular blocky structure; hard when dry,
<br />very friable when moist; strongly calcareous;
<br />c1 ear, wavy boundary.
<br />Clca--16 to 30 inches, very pale brown (lOYR 7/4)
<br />loam, light yellowish brown (lOYR 6/4) when
<br />moist; massive; very hard when dry, very fri-
<br />able ~hen moist; soft lime nodules and mycelia,
<br />and llme-coated pebbles; strongly calcareous;
<br />gradual, wavy boundary.
<br />C2ca--30 to 40 inches, very pale brown (lOYR 7/4)
<br />sandy loam, light yellowish brown (lOYR 6/4)
<br />when moist; massive; very hard when dry, very
<br />friable when moist; soft lime nodules and
<br />mycelia, and lime-coated pebbles; strongly
<br />calcareous; gradual, wavy boundary.
<br />C3ca--40 to 50 inches, very pale brown (lOYR 7/4)
<br />loamy sand, light yellowish brown (lOYR 6/4)
<br />when moist; massive; loose when dry or moist;
<br />strongly calcareous; clear, wavy boundary.
<br />C4ca--SO to 60 inches, very pale brown (lOYR 8/3)
<br />sandy loam, light yellowish brown (lOYR 6/4)
<br />when moist; massive; slightly hard when dry,
<br />very friable when moist; strongly calcareous.
<br />
<br />The texture of the A horizon ranges from sandy
<br />loam to loam. The depth to the Cca horizon ranges
<br />from about 10 to 20 inches.
<br />Harvey soils are associated with Cascajo, Olney,
<br />and Stoneham soils. They differ from Cascajo soils
<br />in being medium textured rather than coarse textured.
<br />Harvey soils developed from parent materials similar
<br />to the parent materials of Stoneham and Olney soils
<br />but Harvey soils do not have so well-developed a '
<br />subsoil or B2t horizon as the Stoneham and Olney
<br />soils.
<br />
<br />.Harvey loam, wet, 0 to 3 percent slopes (HaB) .--
<br />11us soil has a profile similar to that described as
<br />typical for the series, except salts are visible on
<br />the surface. It is in the irrigated section of the
<br />county in areas up to 200 acres in si ze.
<br />
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