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2.04.9 <br />surface stoniness. A limited degree of success can be expected by <br />broadcasting seed late in summer or early in fall. Pubescent wheatgrass, <br />crested ricegrass, and smooth brome are adapted species. Good pasture <br />management must be practiced to protect the soil from erosion and to <br />provide grazing for livestock. <br />The potential plant community on this soil consists mainly of wheatgrasses, <br />bluegrasses, and needlegrasses. As range condition deteriorates, <br />wheatgrasses and needlegrasses decrease, forbs and woody shrubs <br />increase, and undesirable weeds and annual plants invade and become <br />more abundant. <br />This soil is used for winter range by mule deer and elk. Some important <br />plant species which can be managed for optimum production are bitterbrush, <br />mountainmahogany, Gambel oak, serviceberry and elk sedge. Berry- <br />producing shrubs are an important habitat element of black bear. This soil <br />provides habitat for Merriam turkey, blue grouse, and band - tailed pigeon. In <br />favorable years mature Ganbel oaks produce acorns which are used by <br />Merriam turkey. <br />34 — Delson very stony loam, 20 to 60 percent slopes. <br />This is a deep, well drained soil. It formed in stony alluvium and colluviums <br />and is on mountain side slopes. Elevation ranges from 6,800 to 8,400 feet. <br />Average annual precipitation is about 17 inches, average annual air <br />temperature is about 44 degrees F, and the average frost -free season is <br />about 100 days. <br />Permeability is slow, and available water capacity is high. Effective rooting <br />depth is 60 inches or more. Surface runoff is rapid. The hazard of erosion <br />from wind is slight and from water is moderate. <br />Included with this soil in mapping are a few small areas of Cerro, Agua Fria, <br />and Cochetopa soils. In some areas the soil is relatively free of stones or has <br />a surface layer of clay loam. Small slips are common on steeper slopes. <br />PR -14 2.04-94- 03/14 <br />