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1 <br /> RANGE IN CHARACTERISTICS: Depth to free carbonates range from 30 to 65 <br /> inches. The mollic epipedon thickness ranges from 24 to 60 inches. Typically the upper <br /> colluvim contains less than 2 percent gravel by volume and the lower part contains 2 to 6 <br /> percent gravel by volume of mixed lithology. <br /> The A horizons have hue of 10YR or is neutral, value of 2 or 3, and chroma of 0 to 2. <br /> Typically it is loam or clay loam, but silt loam or silty clay loam are within the range. It <br /> has coatings of clean sand and silt particles in the lower part of the A horizon in some <br /> pedons. It is moderately acid to neutral. <br /> The Btg horizon has hue of 10YR, 2.5Y, or 5Y, value of 2 to 4, and chroma of 1 or 2. It is <br /> clay loam, silty clay loam high in sand,or loam. It has between 25 and 35 percent clay <br /> and 15 to 35 percent fine sand and coarser. It has B/A clay ratios of 1.2 to 1.4. It has few <br /> to many, faint to prominent clay films. It is moderately acid to neutral. <br /> ' The C horizon has hue of a 2.5Y or 5Y, value of 4 to 6, chroma of 1 or 2. It is loam or <br /> clay loam. It is slightly alkaline or moderately alkaline. The clay content ranges from 18 <br /> ' to 32 percent and the total sand content ranges from 25 to 45 percent. <br /> COMPETING SERIES: These are the :ANada, Barry, Berville, Brookston, <br /> l3untin(Cville, Clackamas, Cordova, Forestcity, Jamcston, Marem2o, Millin.° Na�an, <br /> Nosoni, Rensselaer, and Westland soils. The Alvada series (Tentative - OH) is not in the <br /> OSD file at this time. The Barry, Berville, Brookston, Cordova, Marengo, Millgrove, <br /> Navan, Rensselaer, and Westland soils have a mollic epipedon that is less than 24 inches <br /> ' thick. The Buntingville soils have carbonates at depths of less than 20 inches. The <br /> Clackamas and Nosoni soils lack free carbonates in the series control section. <br /> The Forestcity soils have 45 to 65 percent sand and 10 to 18 percent clay in the <br /> underlying material. The Jamestoktin soils formed in a firm and very firm till associated <br /> with the Iowan Erosional surface. <br /> ' GEOGRAPHIC SETTING: Hamel soils have concave slopes in swales, rims of closed <br /> depressions, foot and toe slopes, and upper drainageways below sloping to very steep <br /> slopes. Slope gradients are 1 to 4 percent. Hamel soils formed in slope colluvium and <br /> ' glacial till of Late Wisconsinan Age. Mean annual air temperature is about 45 to 48 <br /> degrees F. Mean annual precipitation is about 25 to 30 inches. Frost free days range from <br /> 125 to 165. Elevation above sea level ranges from 700 to 1600 feet. <br /> ' GEOGRAPHICALLY ASSOCIATED SOILS: These are principally the I las den and <br /> Lester soils. These soils are well drained and are on the higher lying, gently sloping to <br /> very steep slopes. <br /> DRAINAGE AND PERMEABILITY: Poorly drained and somewhat poorly drained. <br /> Surface runoff is low or moderately low. Permeability is moderately slow. The apparent <br /> seasonal high water table is at .5 to 1.5 feet for the poorly drained phase and 1.5 to 2.5 <br /> feet for the somewhat poorly drained phase during spring in normal years. <br /> USE AND VEGETATION: Most of this soil is cropped to corn, hay, soybeans, and <br /> small grains. However, significant areas are in pasture and forest. Native vegetation is <br /> mixed wet prairie grasses and deciduous forest. <br /> i <br />