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<br />L~ <br /> <br />2 <br />~Alamosa clay loamy T'us <br />poorly drained soil is on alluvial valley floors, floodplain: <br />Elevatim is 7,500 to 8,000 feet. It formed in loamy alluvii <br />average annual precipitation is about 7 inches, average annu~ <br />temperature is about 41°F., and the average fret-free peria <br />days. Slope is aT'o 1 percerit. <br />Included in this unit are a few small areas of Vastine, f <br />~orsido soils. <br />'typically, the surface layer is grayish brown clay loam <br />thick. 4he subsoil is mainly grayish brosxi clay loan about <br />thick. 'Ihe substratinn is pale brown gravelly loamy sand tha <br />inches. Yellowish brown and pale olive mottles are ccrtmon t <br />profile. <br />and fans. <br />~. The <br />air <br />is about 95 <br />steak, and <br />out 3 inches <br />inches <br />extends to 60 <br />oughout the <br />Pe rnieability is moderately slow. Effective rooting depth is limited by <br />a water table that fluctuates between 1 and 1.5 feet. Surfa runoff is <br />slow, and the hazard of erosion is slight. 7f~is soil is subj ct to <br />flooding during the spring runoff period. <br />7riis soil is used for alfalfa, small grains, Nyland and nge. Thn_ <br />high ~.eter table may damage crops. Suitable irrigatirn met s are borz3ers <br />o wxterapp~~~q+~cn <br />and sprinklers. Drainage, irrigation water management, timi and <br />fertilization are pratices that increase crop yields. <br />The potential vegetation rn this soil is daninated by <br />slender and ~,estern wheatgrass rn the drier areas and b~+ tuft hairgrass, <br />bluejoint reedgrass, and Nebraska sedge rn the ~.etter areas. Crease~od <br />and rabbitbrush are present but widely spaced. When the ran condition <br />deteriorates, the proportion of more desirable species decrea e, and the <br />proportion of foxtail barley, greaseMVOd, sedges and rushes crnase. <br />