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<br />if-Brssser•Truckton sandy looms, 8 40 25 percent
<br />slopes. These deep, well drained sons pre on gently
<br />rolling and hilly ridges and valley side slopes. Elevation
<br />ranges from 5,300 to 6,400 feet. Average $nnual preCipi•
<br />Cation is 14 to 17 inches, and average annual air tem-
<br />perature is about 47 degrees F. The Bresser soil makes
<br />up about 45 percent of the unit and the 7ruckton Boil
<br />about 35 percent.
<br />Included with these soils in mapping and making up
<br />about 10 percent of the unit, are small areas of Ascalon
<br />sandy loam, 4 to 8 percent slopes, and Cushmeh-Kutch
<br />complex, B to 25 percent slopes.
<br />The Bresser soil formed in alluvium end residuum
<br />weathered from arkosic sedimentary rock. Typically, the
<br />surface layer is grayish brown Bandy loam about 7
<br />inches thick. The subsoil to a depth of 28 inches is
<br />brown end pale brown sandy clay loam and sandy loam.
<br />The substratum is very pale brown loamy send to a
<br />depth of 60 inches.
<br />Permeability and available water capacity are moder-
<br />ate. Surtace runotl is medium, and the hazard of erosion
<br />is moderate.
<br />The Truckton soil formed in alluvium and residuum
<br />weathered from arkosic sedimentary rock. Typically, the
<br />surface layer is brown sandy loam about 3 inches thick.
<br />The subsoil, to a depth of about 20 inches, ie brown end
<br />yellowish brown sandy loam. The substratum is very pale
<br />brown loamy coarse sand to a depth of 60 inches.
<br />Permeability is moderately rapid, and available water
<br />capacity is•moderate. Surface runotl is medium, and the
<br />hazard of eroaon is moderate to high. Some gullying has
<br />taken place along stock trails and narrow dralnegeways.
<br />The soils in this unit are used mostly for grazing. Other
<br />uses are for homesites and urban end recreational de-
<br />velopment. Thane soils are fairly suited to most engi-
<br />neering uses.
<br />Rangeland vegetation ie mainly blue grams, prairie
<br />sandreed, needleandthread, western wheatgrass, end si-
<br />deoats grams. When range condition deteriorates be-
<br />cause of overgrazing or other uses, grasses, such es
<br />blue grams and native bluegrasaes, and (orbs, such as
<br />hairy goldasler, increase. Sleepygrase end annuals re•
<br />place these grasses if the range becomes seriously de-
<br />teriorated.
<br />Seeding the ~renge is recommended to revegetate de-
<br />pleted areas in order to protect the sdl from wind find
<br />water erosion. Native greases, such es big bluestpm,
<br />lime bluestem, eldeoats grams, and prattle eandreed, are
<br />recommended~for range seeding. Tame grasses, such ea
<br />crested wheatgrass, Russian wildrye, pubescent whaat-
<br />grass, or intermediate wheatgrass, may also be u;eq.
<br />These soils are generally suited to windbreaks find
<br />eniironmental plantings. Wind erosion is the main limita-
<br />tion to the establishment o1 Vees and shrubs. This
<br />hazard can be overcome by cultivating only in the tree
<br />row and leaving a strip of vegetative cover between the
<br />rows. Supplemental Irrigation Is generally necessary at
<br />the time of planting end during dry periods. Well suited
<br />trees that survive best are Rocky Mountain juniper, eest-
<br />em redcedar, ponderosa pine, Siberian elm, Russian•
<br />gyve, and hackberry. The best suited shrubs are skunk-
<br />bush sumac, American plum, and Hansen rose.
<br />Where these soils ere used for homesites and other
<br />urban purposes, the main limitation is steep slopes. Spe-
<br />cial planning and designs are used to overcome this
<br />limitation.
<br />These soils are in capability subclass Vle, nonur~gated.
<br />43-W~Id Iwm, 0 to ~ parent slopes. This deep,
<br />nearly level to gently sloping, well drained soU fe on
<br />upl,rtd tepleland. It formed In silty eolien material. Eleva-
<br />tion ranges from about 5,300 to 8,400 feet Average
<br />annual precipltatlon ranges from atlout 14 m 17 irrcltse,
<br />average annual air temperature Is about 47 depress F,
<br />and average hoot-hee perbd Is about 145 days.
<br />Included with this Boll In mapping are small areas of
<br />Seca-Wiley hams, Bresser sandy loam, and Englewood
<br />clay loam that have 0 to 4 percent elopes
<br />Typicaly, the aurtace layer la brown loam about 5
<br />Inches ihk:k. The subsoil is brown and pale brown day,
<br />ellty day. and nifty day bam to a deem of atrout to
<br />inches. It le calcareous In the lower part Tits sutrsvahnn
<br />Is pale brown rend light yelbwleh brown dlry day IOarn
<br />and loerrl to a depth of t30 irlctles.
<br />Permeablity b slow, and avallabW water capedtY is
<br />high. Surface runoff Is slow, and the hazard of erosion b
<br />slight.
<br />This soil la used mostly for nonlydgeled cropland.
<br />Some areas ere used for gnzirq. Whet end forage
<br />sorghum ere the main cope grown in a asp tallow
<br />system because of the low precipitation. The estimated
<br />yield for wheat la about 2b btuheb per sae. Some t:om
<br />end atlalle are also grown. This sdl is well tutted to
<br />windbreaks and environmental plantlnga
<br />On nonirrigated cropland, the main concern of man-
<br />agement le conservlrlg mdsturs. Management practkes,
<br />such ae .stubble mulch tltlage and lrtcorporatlrtg aop
<br />residue In and on the aurfsce, ere necessary to improve
<br />water In01VaUon, Improve soil gtlh, and conserve mds-
<br />lure. Tillage pens form •aely ff Ws soil 16 tilled when
<br />wet. Chleeling or eubsdling breaks up Wlsge pans and
<br />Improves water Infiibatlon. lUlage operaUone need to bs
<br />kept to a minimum. Terracing Is also benefiClsl for reduo-
<br />Ing runoff and conaeMng moisture,
<br />Rangeland vegetation is mainly western wfteatgress,
<br />blue grams, needlegrasaes, sideoats grams, and prairie
<br />Junegrase. When range conditbn deteriorates, grasses
<br />such ae blue grsrtw and naWa bluegraeses Irtaease
<br />Sleepygress and ennuale replace these greeees In •
<br />seriously deteriorated rarrge.
<br />Seeding the range fa recommended to revegetate de-
<br />pleted areas In •ader t0 ptotect the soil Irom wind end
<br />water erosion. Seeding to naive grpresses is desirable. but
<br />the range may also be seeded with tame species of
<br />graseee, such es tVorden seated wheatgrass, Aussien
<br />wlldrys, pubescent wheatgrass, or Intermediate wheat-
<br />grass.
<br />This Boll le well eulted to wirtdtxeaks and envlronmen•
<br />tel plantnga. Summer fellow, a year prior to planting;
<br />eupplementel Irtigatlon during planting and early stages
<br />of growth; and continued culWatbn for weed coned are
<br />needed to Insure the establishment and survival of plant-
<br />ings. Well suited Vees that arut4ve beat are Rodry Moun•
<br />fain Juniper, eaetem redcedar, ponderosa pne, Siberian
<br />elm, Russian-olNe, and hackbeny. The Creel suited
<br />shrubs are skunkbuah sumac, American plum, lilac, and
<br />Siberlen peashrub.
<br />High shrink-swell potential, low sVength, and slow par-
<br />mepblllty era the main limiting soil properties for home-
<br />sites end other urban developments. These 14nitations
<br />can be offset by apeclal engineering designs and meas-
<br />ures such as beckfilling with desirable materials.
<br />This Boll Ie In capablllry •ubclese Ille, nonirtigated.
<br />_?g_
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