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• 2.04.9 <br />This soil can be used for irrigated pasture and hay crops. It is well suited to <br />alfalfa, smooth brome, orchard- grass, intermediate wheatgrass, and clover. <br />Irrigation can be done by contour ditch and corrugation methods. <br />Because annual precipitation is low and has poor seasonal distribution, this <br />soil is not suited to nonirrigated crops. However, nonirrigated pasture <br />grasses can be planted late in summer and in fall to protect the soil from <br />erosion and to provide grazing for livestock, if proper pasture management <br />is practiced. Pubescent wheatgrass, Russian wildrye, and crested <br />wheatgrass are adapted species. <br />The potential plant community on this soil consists mainly of bluebunch <br />wheatgrass, Junegrass, western wheatgrass, Indian ricegrass, galleta, <br />needleandthread, and squirreltail. As range condition deteriorates, wheat- <br />grasses, Indian ricegrass, Junegrass, and needleandthread decrease, fortis <br />and woody shrubs increase, and undesirable weeds and annual plants <br />• invade and become more abundant. <br />This soil is used for winter range by mule deer. Big sagebrush, <br />mountainmahogany, and bifterbrush are important browse species which can <br />be managed for optimum production. <br />Map Unit 9 (82) -Work loam, 6 to 12 percent slopes. This is a deep, well <br />drained soil. It formed in reworked material that was weathered from <br />sandstone and is on uplands and alluvial fans and in depressions. Elevation <br />ranges from 6,500 to 8,500 feet. Average annual precipitation is about 17 <br />inches, average annual air temperature is about 44 degrees F, and the <br />average frost-free season is about 90 days. <br />Typically the surface layer is dark brown loam about 6 inches thick. The <br />subsoil is brown clay or clay loam about 33 inches thick. The substratum, to <br />a depth of 60 inches, is very pale brown channery loam. <br />Permeability is moderately slow, and available water capacity is high. <br />Effective rooting depth is 60 inches or more. Surface runoff is rapid. The <br />• hazard of erosion from wind is slight and from water is high. <br />PR-O6 <br />2.04 -54 - 8/01 <br />f1 iPQoVEO <br />~/is~o-z <br />