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• The Splitro soil is shallow. It formed in well drained residuum derived <br />dominantly from sandstone. Typically, the Splitro soil is very dark grayish <br />brown and dark grayish brown sandy loam about 18'inches thick. Fractured hard <br />sandstone is at a depth of 18 inches. Depth to sandstone ranges from 10 to <br />20 inches. <br />Permeability of the Splitro soil is moderately rapid. Effective rooting <br />depth ranges from 10 to 20 inches. Available water capacity is very low. <br />Runoff is slow, and hazard of water erosion is moderate. <br />This unit is used for livestock grazing and wildlife habitat. <br />The potential plant community on this unit is mainly Gambel oak, <br />Saskatoon serviceberry, mountain snowberry, and elk sedge. Other plants that <br />characterize this unit are slender wheatgrass, nodding brome, mountain brome, <br />and aspen peavine. The average annual production of air-dry vegetation is <br />about 2,000 pounds. <br />• If the range is overgrazed, the proportion of preferred forage plants <br />decreases and the proportion of less preferred forage plants increases. <br />Therefore, livestock grazing should be managed so that the desired balance of <br />preferred species is maintained in the plant community. <br />If the range vegetation is seriously deteriorated, seeding is needed. <br />Seeding late in fall helps to ensure that soil moisture will be adequate for <br />the establishment of seedlings next spring. The plants selected for seeding <br />should meet the seasonal requirements of livestock or wildlife, or both. <br />Other management practices suitable for use on this unit are proper range <br />use, deferred grazing, rotation grazing, and brush mnagement. Brush manage- <br />ment improves deteriorated areas of range that are producing more woody shrubs <br />than were present in the potential plant community. <br />If this unit is used for homesite development, the main limitation is <br />depth to bedrock. Excavation for building sites is limited by the depth to <br />S bedrock. <br />Ex. 16-15 <br />