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2/12/2014 <br />Official Series Description - HARVEY Series <br />bedrock within 20 inches of the surface. Rocky Ford soils have a fine -silty family control section. <br />DRAINAGE AND PERMEABILITY: Well drained. Permeability is moderate. Runoff is negligible on slopes <br />less than 1 percent, low on 1 to 5 percent slopes, and medium on 5 to 15 percent slopes. <br />USE AND VEGETATION: These soils are used for livestock grazing and <br />irrigated cropland. Common crops are alfalfa, melons, truck crops and small grains. Blue grama, galleta, sand <br />dropseed, winterfat, cactus, yucca, sagebrush, and juniper are the principal plants. <br />DISTRIBUTION AND EX'T'ENT: Northern New Mexico, Utah and southwestern <br />Colorado and Montana. This soil is of large extent. <br />MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona <br />SERIES ESTABLISHED: Prowers County, Colorado, 1963. <br />REMARKS: Classification change from fine -loamy family to coarse loamy family is based on four sets of <br />NSSL data as follows: S82AZ -015 -009, S83NM- 019 -002 and 003, and S91NM- 057 -005. Total clay <br />averages greater than 18 percent but silicate clay averages less than 18 percent. <br />Diagnostic horizons and features recognized in this pedon are: <br />Ochric epipedon: 0 to 7 inches. (A horizon). When this horizon meets the color requirements of a mollic <br />epipedon, it fails to meet the thickness requirements. <br />Calcic horizons: 11 to 37 inches. (Bkl, Bk2 horizons). <br />Classified according to Keys to Soil Taxonomy Tenth Edition, 2006. <br />National Cooperative Soil Survey <br />U.S.A. <br />https:// soilseries. sc. egovusda .go\iOSD_Docs/H/HARVEY.htrri 313 <br />