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<br />SOIL SURVEY
<br />In a typical profile the surface layer is dark grayish-
<br />bm+vn, lime-free loamy sand about 6 inches thick.l'he sub-
<br />soil,about 2-1 inches thick, also is free of lime and consists
<br />of grayish-brown, brown, and pale-brown sandy loam that
<br />is hard or-very hard when dry. The underlying material
<br />is very pale brown, noncalcareous loamy sand that esten_ds
<br />toa depth of 50 inches.
<br />Except in bare areas, the Truckton soils have rapid wa-
<br />ter intake but only moderate available water holding
<br />capacity. Ll bare areas, the surface tends to crust. Crusting
<br />reduces water intake and increases the hazard of water
<br />erosion. These soils are drougghty, moderate in natural
<br />fertility, and highly susceptible to soil blowing.
<br />Truckton soils are suited to grasses and to small grniils
<br />and sorghums. Most of the acreage is in native grass. Wheat
<br />is the main cultivated crop.
<br />Typical profile of a Truckton loamy sand, about 1,100
<br />feet north and 300 feet wont of the southeast corner of
<br />section 25, T. 5 S, R. 60 \~'.:
<br />Al-0 to 6 inches. dark grnyish-brown (lOYR 4/2) loamy sand,
<br />eery dark grayish brown (lOYR 3/2) when moist;
<br />wank, fine, 6ranuL•v structure to massive (structure
<br />less) ;slightly hard when dry, loose when moist; non-
<br />calcareous; clear, wavy boundary,
<br />B1-6 to 10 inches, grnyisb-brown (lOYR 5/2) light sandy
<br />loam, dark Grayish brown (lOYR 4/2) when moist
<br />and crushed; weak, medium, prismatic structure tbnt
<br />breaks to weak, medium, subasgulflr blocky structure;
<br />hard when dry, very friable when moist; tongues of
<br />very dark grayish brown (lOYR 3/2) when moist,
<br />extend through horizon; noncalcareous; clear, wavy
<br />boundary.
<br />B2t-30 to 20 inches, brown (lOYR 5/3) sandy loam, Brown
<br />(lOYR 4/3) when moist and crushed; weak, medium,
<br />prismatic structure that breaks to weak, medium, sub-
<br />angular blocky stricture; hard to very hard when
<br />dry, friable when moist; thin, patchy clay skins on
<br />faces of pads; tongues of dark grayish brown (lOYR
<br />9/2), when moist, extend to brine of horizon; non-
<br />calcareous; clear, wavy boundary.
<br />B3-20 to 30 inches, pale-brown (lOYR 6/3) snody loam, brown
<br />{lOYR 5/3) when moist rind crushed; weak, medium
<br />to course, subangular blocky structure; hard when
<br />dry, friable wken moist; tongues of brown (lOYR
<br />4/3), ivheo moist, extend into horizon; noncalcareous;
<br />clear, smooth boundary.
<br />X30 to 50 inches, very page brown (IOYR 7/3) loamy sand,
<br />pale brown (lOYlt 6/3) when moist; massive (struc-
<br />tureless) ;slightly hard when dry, loose when moist;
<br />noncalcareous.
<br />The :1 horizon ranges from 4 to 12 inches in thickness apd
<br />from loamy sand to anndy loam in texture. The B2t horizon
<br />is 6 to 18 inches thick rind is more clayey than the A horizon.
<br />Aark streaks or tongues are common in the B horizon.
<br />The Truckton soils have less clay and more sand Lhan the
<br />Bresser soils and thinner, less distinct horizona. They have
<br />more clay and less sand than the Blakeland soils and more
<br />distinct horizons.
<br />Truckton loamy sand, 1 to 5 percent slopes 17rC1.-
<br />This undulating soil occurs on uplands mainly in the west-
<br />tern part of the county, just east of Cherry Creek. It has
<br />the profile described as typical for the series. Runoff is
<br />slow, the intake of water is rapid, and available water
<br />holding ca xity is moderate.
<br />Included with this soil in mapping were a few small
<br />areas of $lakeland loamy sand and of Bresser sandy loam.
<br />Also included were a few severely eroded areas, less than
<br />100 feet in diameter, that are on crests of ridges on slopes
<br />facing west.
<br />Most of this soil is cultivated. Winter wheat, barley, and
<br />sorghums are commonly grown. Stubble mulch tillage and
<br />stripcropping are practices that help to protect this soil
<br />from blowing. (Capability unit IVe-5; Sandy Foothill
<br />range site; tree planting suitability group 2)
<br />Truckton loamy sand, 5 to 20 percent slopes l,7rEl.-
<br />This rolling to hilly soil is on uplands in file western
<br />three-fourths of life county. It occurs in scattered areas,
<br />generally on the eastern side of major drainagewa77~s. The
<br />surface layer is about 5 inches thick and the sullsoil is
<br />sandy loam about 12 inches thick.
<br />Included with this soil in mapping wale a few small
<br />areas of Blakeland loamy sand and of Bresser sandy loam.
<br />Also included were a few small areas of Samsil-Shale out-
<br />cropcomplex at the base of slopes or in gullies.
<br />11lost of this soil is in native grass. Because of droughti-
<br />ness mid a severe hazard of erosion, this soil is not. sorted
<br />to cultivated crops. A few deep gullies have formed, and
<br />shale and sandstone are exposed in many plxe:>. (Ca-
<br />ltability unit VIe-3; Sandy Foothill rengesite; flan plant-
<br />ing smtability group 4)
<br />Weld Series
<br />The Weld series consists of deep, +vell-draineai, level
<br />to gently sloping soils that occur on uplands thranghout
<br />most of the county. These soils developed in material de-
<br />posited by the wind.
<br />In a typical profile the surface layer is grayish-brown,
<br />noncalcareous silt ]oani about 5 inches thick. The subsoil,
<br />about 21 inches thick, is brown clay loam in tho upper
<br />part, grayish-bro+vn silty clay in the middle part, gild light
<br />yellowish-brown, limy silty clay loam in the lower part.
<br />The underlying material is light yellowish-brown, very
<br />strongly calcareous silt loam that extends to a depth of
<br />more than 60 inches and is easily penetrated b;y roots.
<br />The Weld soils Mace a moderate rate of water intake
<br />and high available +vater holding capacity. They are high
<br />in natural fertility but are susceptible to erosion if not
<br />plOteGted.
<br />These soIls are well suited to cultivated crops. Winter
<br />wheat and other small grains are suitable crops.
<br />Typical profile of Weld silt loam, 0 to 3 percent slopes,
<br />about 800 feet north and 1,000 feet +sest of the southeast
<br />corner of section 16, T. 4 S., R. 59 W.:
<br />A1-O to 5 inches, grayish-brown UOYR 5/2) silt lanm, very
<br />dark grayish brown (lOYR 3/2) when moist.; moder-
<br />ate, very tine, granular structure; soft wheu dry, very
<br />friable when moist; noocnlcareous; ebrupl, smooth
<br />boundary.
<br />B21t-5 to 8 inches, brown (IOYR 5/3) heavy clay Icnm, dark
<br />brown (lOYR 3/3) wheu moisk; moderate to strong,
<br />medium, prismatic structure that breaks to moderate,
<br />fine, subnngular blocky structure; thin, nearly con-
<br />tinuous clay films on sn rfaces of pads; noncalcareous;
<br />clear, smooth boundary.
<br />B22t-8 to 14 inckes, grayish-brown (IOYft 5/2) silty clay,
<br />dark grnyish brown (lOYR 4/2) when moist; moder-
<br />ate, medium, prismatic structure that breaks to mod-
<br />erate to strong, fine, angular and subangular blocky
<br />structure; very hard when dry, friable when moist;
<br />thin, nearly continuous clay films on surface:a of pads;
<br />noncalcareous; clear, wavy boundary.
<br />Baca-14 to 26 inches, light yellowish-brown (2.5Y ~fi/3) silty
<br />clay loam, Bght olive brown (2.5Y 5/3) when moist;
<br />modernte, fine, prismatic structure that breaks to mod-
<br />erate to strong, fine, angular rind suhangular blocky
<br />structure: hard [o very hard when dry, friable whe^
<br />moist; thin, pa [chy clay Rims on both hnrixnnfal and
<br />vertical faces oP pads; modernte accumulation of
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