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eh ESPEY, HUSTON & ASSOCIATES, INC. <br />• <br />pedons. Reaction is neutral to moderately alkaline in the A horizon and <br />mildly or moderately alkaline in the C horizon. <br />Competing Series: These aze the Brycan, Frolic, Jodero, McGaffey and <br />Nutrioso series in the same family, and the Havrelon series. Brycan soils <br />have a Iambic horizon, aze noncalcazeous throughout the solum and have <br />chroma of 3 through 6 in the B2 and C horizons. Frolic soils aze <br />noncalcazeous. Havrelon soils lack a mollic epipedon. Jodero soils have <br />a mollic epipedon more than 40 inches thick. McGaffey soils have hue of <br />SYR or redder. Nutrioso soils have a mollic epipedon less than Z4 inches <br />thick. <br />Geographic Setting: Straw soils are on low terraces, alluvial fans and <br />flood plains with raze or occasional flooding, and aze at elevations of <br />• 2,500 to 4,500 feet. The climate is cool with a mean annual air <br />temperature of 43°F. The mean annual precipitation is 13 to 19 inches, <br />most of which falls in spring or eazly summer. The growing season is 105 <br />to 135 days. The mena annual soil temperatures is 40° to 46°F. <br />Associated Soils: These aze the Banks, Korchea, Nesda and Rivra soils <br />and the competing Havrelon soils. All of these soils except Korchea lack <br />mollic epipedons. Korchea soils have a mollic epipedon less than 16 <br />inches thick. <br />Drainage and Permeability: These soils aze well drained with slow runoff <br />and moderate permeability. <br />Use and Vegetation: Straw soils are used for dryland cropland, irrigated <br />cropland and for range. The primary native vegetation is rough fescue, <br />western wheatgrass, needle-and-thread, little bluestem, bluebunch <br />wheatgrass, green needlegrass, forbs and shrubs. <br />• <br />I-42 <br />