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2.04.9 <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 caildlife habitat for mule deer, cotton- <br />tail, hawks and eagles. <br />This unit is well suited to irrigated crops. It is limited <br />mainly by lack of a dependable source of irrigation water. <br />Irrigation water can be applied by the sprinkler or controlled <br />flooding irrigation methods. The method used generally is gov- <br />erned by the crop. Under a high level of management, this unit <br />is capable of producing 22 tons of corn silage per acre, 5.5 tons <br />of alfalfa hay per acre, 4.5 tons of grass hay per acre, 110 <br />bushels of barley per acre, or 80 bushels of oats per acre. <br />This unit is well suited to recreational development. <br />This unit is caell suited to homesite development. If the <br />Barx soil is used for septic tank absorption fields, the limita- <br />tion of moderate permeability can be overcome by increasing the <br />size of the absorption field. <br />This map unit is in capability subclasses IIIe, irrigated, <br />and IVc, nonirrigated. It is in Semidesert Sandy Loam #326 range <br />• site. <br />Soil Map Unit No. 2 <br />Progresso loam, 3 to 12 percent slopes. This moderately <br />deep and well drained soil is formed in alluvium derived domi- <br />nantl,v from sandstone. This unit is on old terraces and mesas. <br />The native vegetation is mainly grasses and sagebrush. Elevation <br />is 5,300 to 6,800 feet. The average annual precipitation is 10 <br />to 14 inches, the average annual air temperature is 46 to 48 <br />degrees F., and the average frost-free period is 110 to 130 days. <br />Typically the surface layer is reddish brown loam 7 inches <br />thick. The subsoil is reddish brown clay loam 17 inches thick. <br />The substratum is whitish sandy loam 12 inches thick. Hard <br />sandstone is at a depth of 36 inches. In some areas the surface <br />layer is fine sandy loam. <br />Included in this unit is 15 percent of Abra, Barx, Bowdish, <br />and Pinon soils. Also included are small areas of sandstone rock <br />outcrop, moderately deep typic Torriorthents and areas with <br />gravelly surfaces. <br />. 2.04-21 <br />