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<br />bedrock and slope. Special sewage systems, such as
<br />enclosed tanks that can be pumped out periodically, are
<br />needed. Septic tank absorption fields do not function
<br />properly because of the depth to bedrock. Slope is the
<br />main limitation of the Peyton soils. Intensive engineering
<br />designs and measures are needed because of the slope
<br />limitation.
<br />These soils are in capability subclass Vle, nonirrigated.
<br />5-Bresser sandy loam, 0 to 4 percent slopes. This
<br />deep, well drained soil formed in alluvium and residuum
<br />weathered from arkosic sedimentary rock. It is on hills
<br />and ridges. Elevation ranges from about 5,300 to 6,400
<br />feet. Average annual precipitation ranges from about 14
<br />to 17 inches, average annual air temperature is about 47
<br />degrees F, and average frost-free period is about 135
<br />days.
<br />Included with this soil in mapping are small areas of
<br />Ascalon sandy loam, Truckton sandy loam, and Weld
<br />loam that have 0 to 4 percent slopes. Also included are
<br />a few small intermittent lakes.
<br />Typically, the surface layer is grayish brown sandy
<br />loam about 7 inches thick. The subsoil to a depth of
<br />about 29 inches is brown and pale brown sandy clay
<br />loam and sandy loam. The substratum is very pale
<br />brown loamy sand to a depth of 60 inches.
<br />Permeability and available water capacity are moder-
<br />ate. Surface runoff is slow, and the hazard of erosion is
<br />slight.
<br />This soil is used mainly for nonirrigated cropland.
<br />Wheat is the main crop, but some smaller acreages of
<br />forage sorghum and corn are also grown. The estimated
<br />yield for wheal is about 22 bushels per acre. Most of the
<br />remaining acreage is used for grazing. Some. areas are
<br />used for homesites and other urban uses.
<br />Conserving moisture and protecting the soil from blow-
<br />ing are the main concerns of management on nonirrigat-
<br />ed cropland. Summer fallow is necessary because of the
<br />absence of adequate precipitation. Stubble mulch tillage
<br />and incorporating crop residue in and on the surface are
<br />necessary to protect soil from erosion, improve soil filth,
<br />and conserve moisture. Chiseling breaks up tillage pans
<br />and improves water infiltration in the subsoil. Stripcrop-
<br />ping and windbreak plantings at right angles to the pre-
<br />vailing wind are also effective in protecting the soil from
<br />blowing. Tillage operations need to be kept to a mini-
<br />mum.
<br />Rangeland vegetation is mainly blue grama, prairie
<br />sandreed, needleandthread, little bluestem, and sideoats
<br />grama. When range condition deteriorates because of
<br />overgrazing or other uses, grasses, such as blue grama
<br />and native bluegrasses, and Torbs, such as hairy goldas-
<br />ter, increase. Sleepygrass and annuals replace these
<br />grasses if the range becomes seriously deteriorated.
<br />Seeding the range is recommended to revegetate de-
<br />pleted areas in order to protect the soil from wind and
<br />water erosion. Native grasses, such as big bluestem,
<br />little bluestem, sideoats grama, and prairie sandreed, are
<br />recommended for range seeding. Tame grasses, such as
<br />crested wheatgrass, Russian wildrye, pubescent wheat-
<br />grass, or intermediate wheatgrass, can also be used.
<br />This soil is generally suited to windbreaks and environ-
<br />mental plantings. Wind erosion is the main limitation to
<br />the establishment of trees and shrubs. This hazard can
<br />be overcome by cultivating only in the tree row and
<br />leaving a strip of vegetative cover between the rows.
<br />Supplemental irrigation is generally necessary at the time
<br />of planting and during dry periods. Well suited trees that
<br />survive best are Rocky Mountain juniper, eastern redce-
<br />dar, ponderosa pine, Siberian elm, Russian-olive, and
<br />hackberry. The best suited shrubs are skunkbush sumac,
<br />American plum, and Hansen rose.
<br />This soil is suited to homesites and other urban uses
<br />and has only minor limitations that can be easily over-
<br />come. Where this soil is used for a sewage lagoon
<br />system, special sealing methods are needed to over-
<br />come the excessive seepage condition.
<br />This soil is in capability subclass Ille, nonirrigated.
<br />6-Bresser sandy loam, 4 to 8 percent slopes. This
<br />deep, well drained soil formed in alluvium and residuum
<br />weathered from arkosic sandstone. It is on gently rolling
<br />uplands and side slopes. Elevation ranges from about
<br />5,300 to about 6,400 feet. Average annual precipitation
<br />ranges from about 14 to 17 inches, average annual air
<br />temperature is about 47 degrees F, and average frost-
<br />tree period is about 135 days.
<br />Included with this soil in mapping are small areas of
<br />Bresser sandy loam, 0 to 4 percent slopes. Also included
<br />are Ascalon sandy loam and Truckton sandy loam that
<br />have 4 to 8 percent slopes.
<br />Typically, the surtace layer is grayish brown sandy
<br />loam about 7 inches thick. The subsoil is brown sandy
<br />clay loam to a depth of about 20 inches and pale brown
<br />sandy loam to a depth of about 29 inches. The substra-
<br />tum is very pale brown loamy sand to a depth of 60
<br />inches.
<br />Permeability and available water capacity are moder-
<br />ate. Surface runoff is medium, and the hazard of erosion
<br />is moderate. A few gullies are in some places.
<br />Less than halt of this soil is used for nonirrigated
<br />cropland. Wheat is the main crop. The estimated yield
<br />for wheat is about 17 bushels per acre. Most of the
<br />remaining acreage is used for grazing. Some areas of
<br />this soil are used for homesites and other urban pur-
<br />poses.
<br />Conserving moisture and protecting the soil from ero-
<br />sion are the main concerns of management on nonirri-
<br />gated cropland. Summer fallow is necessary because of
<br />the absence of adequate precipitation. Stubble mulch
<br />tillage and incorporating crop residue in and on the sur-
<br />face are necessary to protect soil from erosion, improve
<br />soil filth, and conserve moisture. Chiseling breaks up
<br />tillage pans and improves water infiltration in the subsoil.
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