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2.04.9 <br />Permeability of this Progresso soil is moderate. Available <br />water capacity is moderate. Effective rooting depth is 20 to 40 <br />inches. Runoff is rapid, and the hazard of water erosion is <br />high. <br />This unit is used for livestock grazing in the spring and <br />fall and as wildlife habitat. <br />The potential plant community on this unit is mainly galle- <br />ta, big sagebrush, and needleandthread. The average annual <br />production of air-dry vegetation is about 600 pounds per acre. <br />If the condition of the range deteriorates, broom snakeweed, <br />Fendler threeawn, cheatgrass and annual sunflowers increase. <br />Where the range is in poor condition, these plants are dominant. <br />Grazing should be managed so that the desirable balance of spe- <br />cies is maintained in the plant community. <br />If the range vegetation is seriously deteriorated, seeding <br />is needed. For successful seedings, a seedbed should be prepared <br />and the seeds drilled. The plants selected for seeding should <br />meet the seasonal requirements of livestock or wildlife or both. <br />The management practices suitable for use on this unit are <br />proper grazing use and a planned grazing system. Brush manage- <br />ment improves deteriorated areas of range that are producing more <br />• woody shrubs than were present in the potential plant community. <br />This unit provides wildlife habitat for mule deer, cotton- <br />tail rabbits, hawks and eagles. <br />If this unit is used for recreational development, the main <br />limitations are dustiness and slopes greater than 8 percent. <br />If this unit is used for homesite development, the main <br />limitations are depth to bedrock, moderate shrink-swell potential <br />and slopes greater than 8 percent. If this unit is used for <br />septic tank absorption fields, the limitations of moderate perme- <br />ability can be overcome by increasing the size of the absorption <br />field. <br />This map unit is in capability subclass VIe, nonirrigated. <br />This unit is Semidesert Loam #325 range site. <br />• 2.04-22 <br />