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<br />SOIL DESCWPTION <br />Sedillo Qravelly loam, 0 to 3 percent stones <br />This deep, well drained soil is old high terraces of major river valleys. It formed in cobbly <br />glacial outwash. Elevation is 6,000 to 6,700 feet. The average annual precipitation is 13 to 16 <br />inches. The average annual air temperature is about 50 to 52 degrees F, and the average frost- <br />free period is I ] 0 to 130 days. <br />Typically, the surface layer is brown gravelly loam about 6 inches thick. The upper part of the <br />subsoil is reddish brown very gravelly clay loam about 15 inches thick, and the lower part is <br />brown very gravelly sand clay loam about 6 inches thick. The substratum is pinkish white very <br />cobbly or very gravelly sandy clay loam that extends to a depth of 60 inches or more. <br />Permeability this Sedillo soil is moderately slow. Effective rooting depth is 60 inches or more. <br />The available water capacity is moderate. Runoff is medium, and the hazazd of erosion is slight. <br />The native vegetation on this soil is mainly Indian ricegrass, junegrass, western wheatgrass, blue <br />grams, muttongrass, Fendler threeawn, big sagebrush, bitterbrush, serviceberry, pinyon and <br />Rocky Mountain juniper. Use of proper grazing and planned grazing systems aze the most <br />important practices that can be used to maintain the quality and quantity of grasses. Seeding <br />speeds up re-vegetation of azeas of rangeland that have deteriorated because of overgrazing, <br />cultivation and other disturbances. <br />