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St--Stoneham loam, 0 to 3 percent slopes. This deep, well drained <br />soil is on nearly level uplands. It formed in mixed materials on ridgetops <br />and benches. The native vegetation is mainly grass. The average annual <br />precipitation is about 13 to 15 inches. <br />Typically, the surface layer is yellowish brown loam about 3 inches <br />thick. The upper subsoil is yellowish brown clay loam about 4 inches thick. <br />The lower 2 inches is very pale brown calraroous hoavy foam. 'fhi• upper 37 <br />inches of the substratum is very pale brown calcareous loam. The lower par[ <br />to a depth of 60 inches or more is pink calcareous sandy clay loam. <br />Included in this unit are small areas of Wiley silt loam, Fort Collins <br />loam, and Satanta loam. <br />Permeability of the Stoneham soil is moderate. Available water capacity <br />is high. Effective rooting depth is 60 inches or more. Runoff is slow, and <br />the hazard of water erosion is slight. The hazard of soil blowing Ss <br />moderate. <br />Rhis unit is used mainly as native range, but some is cropped. It is <br />beat suited to native range but can be cropped successfully if surface cover <br />is maintained. <br />The potential plant community on [he Stoneham soil is mainly blue grams, <br />western wheatgrass, and needlegrass. The average annual production of <br />air-dry vegetation ranges from 750 to 1,300 pounds. <br />