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more than half the time cumulative that the soil temperature at a depth of 20 inches is 41 degrees F.
<br />and is never moist in some or all parts for as long as 60 consecutive days when the soil temperature
<br />at a depth of 20 inches is 41 degrees F., which occurs about April 21 -27, but is dry in all parts of the
<br />moisture control section for at least 60 consecutive days from July 15 to October 25 and for at least
<br />90 cumulative days during this period. The mean annual soil temperature is 47 to 53 degrees F.,
<br />and the soil temperature at a depth of 20 inches is 41 degrees F. or more for 175 to 192 days. EC
<br />ranges from 0 to 2 mmhos throughout the profile.
<br />The A horizon has hue of 2.5Y through 7.5YR, value of 4 through 6 dry, 3 through 5 moist, and
<br />chroma of 2 through 4. Textures are typically sandy loam but may be sandy clay loam, fine sandy
<br />loam, very fine sandy loam, or loam. Reaction is typically neutral or mildly alkaline but ranges to
<br />moderately alkaline in some pedons.
<br />The Bt horizon has hue of 2.5Y through 7.5YR, value of 4 through 6 dry, 3 through 5 moist, and
<br />chroma of 2 through 4. In pedons where mollic colors are present in this horizon, the layer is too
<br />thin to meet the requirements for a mollic epipedon. Texture is sandy clay loam with more than 35
<br />percent fine sand or coarser. Clay ranges from 20 to 35 percent. Reaction is typically mildly alkaline
<br />but may range from neutral to moderately alkaline.
<br />The Bk horizon has hue of 2.5Y through 7.5YR, value of 5 through 7 dry, 4 through 6 moist, and
<br />chroma of 2 through 6. Texture is typically sandy loam or sandy clay loam but may be fine sandy
<br />loam or very fine sandy loam. Carbonates range from 6 to 14 percent. This horizon does not meet
<br />the requirements of a diagnostic calcic. Discontinuous horizons with greater than 15 percent
<br />carbonates occur in some pedons. Reaction is moderately or strongly alkaline with less than 15
<br />percent ESP.
<br />The Cr is a paralithic contact to calcareous, argillaceous sandstone. This material is weakly
<br />consolidated and does restrict the movement of water and, therefore, roots. Interbedded shales
<br />may be present in some areas and may form the contact.
<br />COMPETING SERIES: These are the Balon, Barx, Buckle, Cambria, Cerrillos, Clovis, Cushman,
<br />Decolney, Fattig, Fernando, Flaco, Forkwood, Gaddes, Gapbutte(T), Hagerman, Harbord, Hiland,
<br />Los Alamos, Maysdorf, Millett, Oelop, Olney, Palacid, Penistaja, Pokeman, Potts, Progresso,
<br />Pugsley, Quagwa, Redpen(T), Scholle, Spangler, Spenlo, Sundance, Tapia, Teckla(T), Threetop,
<br />Toluca, Tuweep, and Yenlo, series in the same family. Balcon, Barx, Buckle, Cambria, Cerrillos,
<br />Clovis, Decolney, Fernando, Forkwood, Harbord, Hiland, Los Alamos, Maysdorf, Millet, Oelop,
<br />Olney, Palacid, Penistaja, Potts, Quagwa, Redpen, Scholle, Spenlo, Sundance, Tapia, Teckla,
<br />Toluca, Tuweep, and Yenlo soils lack bedrock above 40 inches. Cushman soils have less than 35
<br />percent fine sand or coarser in the Bt horizon. Fattig, Flaco, Gaddes, Gapbutte, Hagerman,
<br />Progresso, and Threetop soils have a lithic contact at 20 to 40 inches. Pokeman soils have
<br />alabaster at 20 to 40 inches and hues redder than 7.5YR throughout. Pugsley and Spangler soils
<br />are noncalcareous throughout.
<br />GEOGRAPHIC SETTING: Bowbac soils are on dissected fan remnants, fan piedmonts, hillslopes,
<br />pediments, ridges and buttes. Slopes are 0 to 15 percent. Elevations are 3,500 to 6,500 feet. The
<br />average annual precipitation is 13 inches with over half of the annual precipitation falling in April,
<br />May, and June and less than one inch falling in each month of July, August, September, and
<br />October. Precipitation ranges from 10 to 14 inches. The mean annual temperature ranges from 43
<br />Attachment 2.04.9 -3 -11
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