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little bluestem, western wheatgrass, and pubescent wheatgrass are suitable for seeding. The <br />grass selected should meet the seasonal needs of livestock. It can be seeded into a clean, <br />firm sorghum stubble, or it can be drilled into a firm prepared seedbed. Plowing and <br />drilling on the contour minimize runoff and soil losses. Seeding early in spring has proven <br />most successful. <br />Windbreaks and environmental plantings are generally well suited to this soil. Cultivation <br />to control competing vegetation should be continued for as many years as possible <br />following planting. Trees that are best suited and have good survival are Rocky Mountain <br />juniper, eastern redcedaz, ponderosa pine, Siberian elm, Russian-olive, and hackberry. The <br />shrubs best suited are skunkbush sumac, lilac, Siberian peashrub, and American plum. <br />Wildlife is an important secondary use of this soil. The cropland areas provide favorable <br />habitat for ring-necked pheasant and mourning dove. Many nongame species can be <br />attracted by establishing areas for nesting and escape cover. For pheasants, undisturbed <br />nesting cover is essential and should be included in plans for habitat development, <br />especially in areas of intensive agriculture. Rangeland wildlife, for example, the pronghorn <br />antelope, can be attracted by developing livestock watering facilities, managing livestock <br />grazing, and reseeding where needed. <br />This soil has good potential for urban and recreational development. Increased population <br />growth in the survey area has resulted in increased homesite construction. The chief limiting <br />soil feature for urban development and road construction is th elimited capacity of this soil to <br />support a load. Septic tank absorption fields function properly, but community sewage <br />systems should be provide if the population density increases. Because of the permeability <br />of the substratum, sewage lagoons must be sealed. Lawns, shrubs, and trees grow well. <br />Capability subclass IVe irrigated, Vie nonirrigated; Loamy Plains range site. <br />39 -Nunn Loam, 0-1 % slopes <br />This is a deep, well drained soil on terraces at elevations of 4550 to 5000 feet. It formed in <br />mixed alluvium. Included in mapping are small, long and narrow areas of sand and gravel <br />deposits and small areas of soil that are subject to occasional flooding. Some small leveled <br />areas are also included. <br />Typically the surface layer of this Nunn soil is grayish brown loam about 12 inches thick. <br />The subsoil is light brownish gray clay loam about 12 inches thick. The upper part of the <br />substratum is light brownish gray clay loam. The lower part to a depth of 60 inches is brown <br />sandy loam. <br />Permeability is moderately slow. Available water capacity is high. The effective rooting <br />depth is 60 inches or more. Surface runoff is slow, and the erosion hazazd is low. <br />This soil is used almost entirely for inigated crops. It is suited to all crops commonly <br />grown in the area, including corn, sugaz beets, beans, alfalfa, small grain, potatoes, and <br />onions. An example of a suitable cropping system is 3 to 4 years of alfalfa followed by <br />FL Lup[on Pi( <br />DMG / 12 Permi[ <br />Page 45 of 8/ <br />