06032
<br />Banks and Gesso. LLC
<br />16-Cushman-Kutch complex, a to 25 percent
<br />elopes. These moderately deep, well drained, moderate-
<br />ly sloping to moderately steep soils are on upland hills,
<br />ridges, end side sopes. Elevation ranges from about
<br />5,300 to 6,400 feet. Average annual precipitation ranges
<br />from about 14 to 17 inches, average annual air tempera-
<br />ture is about 47 tlegrees F, end average frost-tree period
<br />is about 135 days. The Cushman soil makes up about 50
<br />percent of this unit and the Kutch soil about 30 perrenL
<br />Included with this complex in mapping, and making up
<br />about 20 percent of the unit, are Ascalon sandy loam, 4
<br />to 6 percent slopes; Renohill-Louviers complex, B to 25
<br />percent slopes; sandy soils that ere similar to the Teny
<br />soils meppetl in EI Paso County; end sandstone outcrops
<br />(fig. 5).
<br />The Cushman soil formed in Calcareous material
<br />weathered from interbetltled she(e antl sandstone. Typi-
<br />cally, the surface layer is pale brown loam about 4
<br />inches thick. The subsoil is grayish brown clay loam to a
<br />tlepth of about 20 inches. The substratum is light brown-
<br />ish gray silty clay to a tlepth of about 34 inches. Below
<br />that is alive interbedded shale end sandstone.
<br />Permeability is moderate, end available water capacity
<br />is low to moderate. The effective rooting tlepth is 20 to
<br />40 inches. SuAace runoff is medium, and the hazard of
<br />erasion is motlerate to high. Deep gullies have formed
<br />along some dreinageways and stock !rails.
<br />The Kutch soils formetl in fine textured calcareous
<br />material weathered from clay shale. Typically, the sur-
<br />face layer is greyish brown clay loam about 4 inches
<br />thick. The subsoil is greyish brown and light olive brown
<br />clay to a depth of about 22 inches. It is calcareous in the
<br />lower pflrt. The substratum is greyish brown clay to a
<br />depth of about 30 inches. Below that is gray and olive
<br />shale.
<br />Permeability is slow, and available water capacity is
<br />motlerate. The effective rooting depm is 20 to 40 inches.
<br />SuAace runoff is medium to rapid, and the hazard of
<br />erosion is moderate. Some gullying has taken place in
<br />narrow drainageways.
<br />These soils ere used mainly for grazing. They have
<br />poor potential for cropland and for windbreaks and envi-
<br />ronmental plantings. The Cushman soil has fair to poor
<br />potential for most engineering uses, antl the Kutch soil
<br />nos poor potential.
<br />Rangeland vegetation on the Cushman soil is mainly
<br />blue grams, needlegrasses, praise junegress, sideoats
<br />grams, antl western wheatgrass. When range condition
<br />deteriorates. grasses such as blue grams antl native
<br />auegresses increase. Sleepygrass and annuals replace
<br />these grasses In a seriously deteriorated range.
<br />Seeding the range is recommended to revegetate tle-
<br />pleted areas in order to protect me soil from wind end
<br />water erosion. Beetling to native grasses is desirable, but
<br />the range may also be seeded with tame species o1
<br />grasses, such as Nortlan crested wheatgrass, Russian
<br />wildrye, pubescent wheatgrass, or intermediate wheat-
<br />grass.
<br />Rangeland vegetation on the Kutch soil consists of
<br />western wheatgrass, blue grams, green needlegress, si-
<br />tleoats grams, and setlge. Contour furrowing or pitting
<br />aids in the recovery of deplatetl vegetation on this soil
<br />by reducing runoff antl increasing water infiltration. Areas
<br />that have dense stands of pricklypear or rabbitbrush can
<br />be managed by chemical control.
<br />These soils ere generally not suited to windbreaks or
<br />environmental plantings. Onsite investigation is needetl
<br />to tletermine which special planting practices are needed
<br />to insure survival.
<br />The main limiting soil features of these soils, where
<br />they era used for homesites or other urban uses, are [he
<br />presence or sandstone and shale at a depM of 20 to 40
<br />inches, shrink-swell potential, slow permeability, and
<br />steep slopes. Intensive antl costy measures are naetled
<br />to oHSet these limitations.
<br />This complex is in capability subclass Vle, nonirngated.
<br />36-Kutch clay loam, 4 to 8 percent slopes. This
<br />moderately deep, genty sloping and moderately sloping,
<br />well drained sail is on upland hills, ridges, antl valley side
<br />elopes. It formed in tine textured calcareous materiel
<br />weathered from clay shale. Elevation renges (ram about
<br />5,300 to 6,400 feet. Average annual precipitation ranges
<br />from 14 to 17 inches, average annual air temperature is
<br />about 47 tlegrees F, end average frost-free penatl is
<br />about 135 days.
<br />Inaudetl with this sal in mapping are Smell areas of
<br />Nunn clay loam antl Renphill clay loam that have 4 to 8
<br />percent slopes.
<br />Typically, the surtace foyer is greyish brown clay loam
<br />about 4 Inches thick. The subsoil is grayish brown antl
<br />light olive brown clay to a tlepth of about 22 inches. Tne
<br />eubanatum is greyish brown clay to a depth of about 30
<br />Inches. Below that is grey and olive shale.
<br />Permeability is slow, and available water capacity i9
<br />moderate. The effective rooting depth is 20 to 40 inches.
<br />Surface runoff is medium, and the hazard of erosion is
<br />motlerate. Some gullies have formed along drain-
<br />ageways.
<br />Most of this soil is used for grazing. A few small areas
<br />are used for nonirngatetl cropland, and wheat is Ne
<br />main crop grown. The estimated yield for wheat is about
<br />16 bushels per acre. Many formerly cropped areas have
<br />been seeded to grass. This soil is well suited to grazing
<br />(fig. 13).
<br />Rangeland vegetation is mainly western wheatgrass,
<br />blue grams, green needlegress, bluegrass. Indian dce-
<br />gress, and fourwing sakbush. Fallowing prolonged over
<br />grazing, native bluegrasses, annual gasses, and weeds
<br />increase. Contour funowing or pitting aids in the recov-
<br />ery of depleted vegetation by reducing runoff fled in-
<br />creasing water infiltration. Areas that have tlense stands
<br />of pdcktypear or rabbdbrush can be managetl by chemi-
<br />cal control of these species.
<br />In nonirdgated croplantl areas, management practices,
<br />such as stubble mulch tillage and incorporating crop
<br />residue in and on the surface, are needed to protect the
<br />surface soil from blowing, knprove soil filth, end con-
<br />serve moisture. Chiseling end subsoiling improve water
<br />and root penetration. Tillage pans farm easily if this soil
<br />is tilletl when wet. Terracing is also beneficial for reduo-
<br />ing runoff, conVOlling erosion, and conserving moisture.
<br />This soil is generaly not suited to windbreaks or envi-
<br />ronmental plantings. Onsite investigation is generally
<br />needed to tletermine which special planting practices ere
<br />needed to insure survival.
<br />Where Nis sail is used for homesites or other urban
<br />purposes, the main limiting soil properties are depth to
<br />rock, slow penneabiliry, high shrink-swell potential, antl
<br />low strength, Special site or building tlesigna ere neces-
<br />aery to offset the limitations. Special sewage systems,
<br />such as enclosed tanks that can be pumpetl out periotli-
<br />cally, are needed. Septic tank absorption fields will not
<br />function properly because of slow permeability.
<br />This soil is in capability subclass IVs, nonirtigeted.
<br />The Denver Brick Company January 2007
<br />Kiowa Clay Mine Page 18
<br />
|