68 Soil survey
<br />slightly plastic; many very fine and fine roots;
<br />violently effervescent; moderately alkaline; clear
<br />wavy boundary.
<br />Cr2 -12 inches; white (10YR 8/1) highly calcareous
<br />sandstone, light gray (10YR 7/2) moist; somewhat
<br />layered and fractured.
<br />The content of rock fragments in the pedon ranges
<br />from 0 to 25 percent. Depth to bedrock ranges from 6 to
<br />20 inches.
<br />The A horizon is fine sandy loam or loam.
<br />Colby series
<br />The Colby series consists of deep, well drained soils
<br />that formed in wind - deposited silt and very fine sand.
<br />Colby soils are on irregular plains, low hills, and
<br />dissected slopes. Slopes range from 3 to 25 percent.
<br />The mean annual precipitation is 16 inches, and the
<br />mean annual temperature is 51 degrees F.
<br />Colby soils are similar to Kim soils. They are near Kim,
<br />Canyon, Keith, and Kuma soils. Kim soils are more than
<br />15 percent fine sand or coarser sand in the control
<br />section. Canyon soils are shallow. Keith and Kuma soils
<br />have a mollic epipedon and a B2t horizon.
<br />Typical pedon of Colby silt loam, 3 to 6 percent
<br />slopes, in native grass 1 mile east and 1 mile south of
<br />Vernon, 75 feet west and 1,700 feet south of the
<br />northeast corner of sec. 33, T. 1 S., R. 44 W.
<br />A1-0 to 5 inches; light brownish gray (10YR 6/2) silt
<br />loam, dark grayish brown (10YR 4/2) moist; weak
<br />medium granular structure; soft, very friable,
<br />nonsticky and slightly plastic; many very fine and
<br />fine roots; weakly effervescent; mildly alkaline; clear
<br />smooth boundary.
<br />AC -5 to 8 inches; light brownish gray (10YR 6/2) silt
<br />loam, dark grayish brown (10YR 4/2) moist; weak
<br />coarse subangular blocky structure; slightly hard,
<br />very friable, nonsticky and slightly plastic; common
<br />very fine and fine roots; strongly effervescent;
<br />moderately alkaline; clear wavy boundary.
<br />Cl ca -8 to 17 inches; very pale brown (10YR 7/3) silt
<br />loam, brown (10YR 5/3) moist; weak coarse
<br />subangular blocky structure; slightly hard, very
<br />friable, nonsticky and slightly plastic; common very
<br />fine and fine roots; fine filaments, threads, and soft
<br />masses of segregated lime; violently effervescent;
<br />moderately alkaline; gradual smooth boundary.
<br />C2ca -17 to 60 inches; very pale brown (10YR 7/3) silt
<br />loam, brown (10YR 5/3) moist; massive; slightly
<br />hard, very friable, nonsticky and slightly plastic; few
<br />very fine and fine roots; violently effervescent; fine
<br />filaments, threads, and soft masses of segregated
<br />lime; moderately alkaline.
<br />In some pedons, lime is leached to a depth of 6
<br />inches.
<br />Dioxice series
<br />The Dioxice series consists of deep, well drained soils
<br />that formed in old alluvium. Dioxice soils are on side
<br />slopes of limestone hills and knolls. Slopes range from 3
<br />to 9 percent. The mean annual precipitation is 17 inches,
<br />and the mean annual temperature is 51 degrees F.
<br />rrd
<br />The C2 horizon ranges from silt loam to loam,
<br />depending on the content of very fine sand. In the Cca
<br />horizon, visible accumulations of carbonates occur as
<br />fine filaments, threads, or soft masses. Carbonate
<br />accumulations are not visible in all pedons.
<br />Dailey series
<br />The Dailey series consists of deep, somewhat
<br />excessively drained soils that formed in wind - deposited
<br />sand. Dailey soils are in sandhill valleys and on sandhills.
<br />Slopes are 0 to 6 percent. The mean annual precipitation
<br />is 17 inches, and the mean annual temperature is 51
<br />degrees F.
<br />Dailey soils are near Valent, Julesburg, Haxtun, and
<br />Manter soils. Valent soils have a light- colored surface
<br />layer. Julesburg soils have a B2t horizon of coarse sandy
<br />loam. Manter soils have a B2t horizon of sandy loam,
<br />and they have a calcareous substratum. Haxtun soils
<br />have a buried B2tb horizon of sandy clay loam.
<br />Typical pedon of Dailey loamy sand, in native grass, 5
<br />miles south and 4 miles east of Yuma, 2,000 feet west
<br />and 500 feet east of the southeast corner of sec. 30, T.
<br />1 S., R. 47 W.
<br />A1-0 to 5 inches; grayish brown (10YR 5/2) loamy
<br />sand, very dark grayish brown (10YR 3/2) moist;
<br />weak fine granular structure that parts to single
<br />grain; soft, very friable; common very fine and fine
<br />roots; neutral; clear wavy boundary.
<br />AC -5 to 12 inches; dark grayish brown (10YR 4/2)
<br />loamy sand, very dark grayish brown (10YR 3/2)
<br />moist; weak coarse prismatic structure that parts to
<br />single grain; slightly hard, very friable; common very
<br />fine and fine roots; very few very thin clay films on
<br />vertical faces of peds; neutral; clear wavy boundary.
<br />C1 -12 to 25 inches; brown (10YR 5/3) loamy sand,
<br />dark brown (10YR 4/3) moist; single grain; loose;
<br />few very fine and fine roots; neutral; gradual smooth
<br />boundary.
<br />C2 -25 to 36 inches; pale brown (10YR 6/3) loamy
<br />sand, brown (10YR 5/3) moist; single grain; loose;
<br />few very fine roots; neutral; gradual smooth
<br />boundary.
<br />C3 -36 to 60 inches; pale brown (10YR 6/3) sand, dry
<br />or moist; single grain; loose; neutral.
<br />The C horizon is loamy sand or sand. In some pedons,
<br />a layer of grayish brown sandy loam is below a depth of
<br />40 inches. To a depth of 40 inches or more, the soil is
<br />neutral or mildly alkaline.
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