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• USE AND VEGETATION: This soil is used mainly for rangeland. A few areas are irtigated and produce corn for <br />silage, small grains, alfalfa, and grass hay. Native vegetation consists mainly of galleta, Indian ricegrass, <br />needleandthread, and Wyoming big sage. <br />DISTRIBUTION AND EXTENT: Western Colorado, northern Arizona and adjacent parts of New Mexico. The series <br />is of moderate extent. <br />SERIES ESTABLISHED: Reconnaissance Upper Rio Puerto, New Mexico, Soil Conservation Service, 1940. <br />MLRA OFFICE RESPONSIBLE: Phoenix, Arizona <br />REMARKS: Diagnostic horizons and features recognized in this pedon are: <br />Ochric epipedon -the zone from 0 to 7 inches <br />Argillic horizon -the zone from 7 to 24 inches. <br />Lithic contact -the boundary with sandstone at 36 inches. <br />Ustic feature -soil moisture regime and organic carbon content meets the requirements for Ustic intergrades. <br />National Cooperative Soil Survey <br />• U.S.A <br />• <br />(Revised March 2006) Attachment 2.04.9-3-30 <br />