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<br />A3-5 Jodero loam, 1 [0 3 percent slopes <br />• This deep, well drained soil is on valley bottoms and alluvial fans. <br />It formed in medium textured alluvium. Elevation is 7,000 to 8,000 fie[. <br />The average annual precipitation is 18 to 24 inches. The average annual <br />air temperature is 43 to 46 degrees. The average frost free season is <br />100 to 120 days. <br />Typically, the surface layer is dark grayish brown loam about 10 <br />inches thick. The underlying layer is dark grayish brown loam stratified <br />with fine sandy loam about 35 inches thick. The underlying material is <br />dark grayish broe.m loam to a depth of 60 inches or more. <br />Included in this unit is about 15 percent Hesperus loam, and small <br />areas of Sampson Fine sandy loam. Also included are areas that have a fine <br />sandy loam surface. <br />• Permeability is moderate. Effective rooting depth is 60 inches or more. <br />Available water capacity is high. Surface r~inoff is slow and erosion hazard <br />is moderate. <br />This soil is used mainly for range and wildlife. Snme sma.il areas are <br />used for irrigated crops. <br />In irrigated areas the primary concerns of management are controlling <br />erosion by water, organic matter maintenance of the surface layer and <br />proper use of irrigation water. Incorporating crop residues into and onto <br />the surface will improve water infiltration, tilth, and control soil erosion. <br />Laced smoothing is needed for more uniform distribution and efficient use oC <br />irrigation water. Irrigation methods suitable for this soil are furrow, <br />corrugation and sprinklers. Corrugation irrigation is well suited to small <br />grains and pasture. Sprinkler irrigation is suited to most crops but because <br />