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C~ 1 ~, ~. 1 1 D[HIBIT A-3 6-&eeNr candy loam, 4 to (I percent slopes. This deep. well drained soil formed in alluvium and residuum weathered from arkosic sandstone. It is on gently rolling uplands and Bide slopes. Elevation ranges from about 5,300 b about 8,400 feet. Average annual precipitation ranges }rpm about 14 to 17 inches, average annual air temperature ie about 47 degrees F, and average frost- lree period b about 135 days. Included with ttria soil in mapping are small areas of Bresser sandy loam, 0 to 4 percent slopes. Also included are Ascalon sandy loam and Truckton bandy loam that have 4 to 8 percent elopes. Typicaly, the surface layer is grayish brown sandy loam about 7 inches thick. The subsoil is brown sandy clay loam to a depth of about 20 inches and pale brown sandy loam t0 a depth of about 29 inches. The substra- tum beery pale brown loamy sand to a depth of 60 inches. Permeability Arid available water capacity ere rnpder- ate. Surface runotl Is medium, end the hazard o1 erosion b moderate. A few gullies are in some places. Less than haU of this Boll is used for nonirrigated croplarM. Wtreat Is the main crop. The estimated yield fa wheat is afwul 17 bushels per acre. Mpst of the rerttprrirg acrpeg9 is used for Grazing. Soil areas of ttds soil are yaed la homeaiteq and other yfben pur• P~11• - Conserving moisture end protr}cling the sql Irom aro- sion are the main concerns of management on nonirri• gated uopland. Summer fallow ie necessary because of the iitbserrce of adequate precipitation. Stubble mulch tillage turd Int:orporadng crop residua in and on the sur- tace are rritx•,eaaary to protect soil from erosion, improve soil filth, and conserve moisture. Chiseling breaks up tillage pane•turd Improy~water.infiltretion in the subsoil. Stripuopplrig lit right angles to the prevailing wind is also .eftectlve In potecang the Boil from blowing (figs. t to 4). TUlege operations need to be kept to a minimum. Rsngeland Vegetation is mainly blue grams. prairie iwidreed, needleandthread, little bluestem, and sidooats grams. When range condition deteriorates because of overgrazing or Other uses, grasses, such as blue yrama and native bluegresses, and forts, such as hairy goldas- te(, Irruease. SleepYgress end annuals replaco these grasses if the range becomes seriously deteriorated. Seeding the range is recommended to revagetato de- pleted areas in order to protect the soil from wind and water erosion. Native presses, such as big bluestem, little bluestem, sldeoats greme, end praxis sandreed, are recommended for range seeding. Tame grasses. such as nested whealgrass, Russian wildrye, pubescent wheat- grass, Or inlemledlate wheatgrass, may also be used. This soft is generally suited l0 windbreaks and environ- mental plantings. Wind erosion is the main limitation to the establishment of trees end shrubs. This hazard can be overcome by cultivating only in the tree row end' leaving a strip of vegetative cover between the [pws. Supplemental irrigation is generally necessary et the time of planting and during dry periods. Well suited trees that survive best are Rocky Mountain juruper, eastern redce- dar, ponderosa pine, Siberian elm, Russian-olive, and hackberry. The best suited shrubs are skunkbush sumac, American plum, and Hansen rose. This soil is well suited for homesites and other urban uses and has only minor limitations That can be easily overcome. Where this soil is used for a sewage lagoon system, special sealing methods are needed to over come the excessive seepage condition. This soil is in capability subclass IVs, nonirrigated. .. ' -27-