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may have mucky modifiers. It is commonly neutral but ranges from slightly alkaline to <br /> 1 slightly acid. <br /> AB horizon has colors and textures similar to the A and Bg horizons. <br /> ' The Bg horizon has hue of 5Y or 2.5Y, value of 2 to 5, and chroma of 1 or 2. Dark <br /> colored tongues from the A horizon range from few to common. It is loam, clay loam or <br /> silty clay loam.Near the center of some depressions, some pedons have B horizons that <br /> ' have a slight clay increase relative to the A horizons. It is neutral to slightly alkaline, but <br /> in some pedons the lower part of the B horizon is slightly alkaline with slight <br /> effervescence. The Bg horizon is absent in some pedons. <br /> The Cg horizon has hue of 5Y or 2.5Y, value of 4 to 6, and chroma of 1 to 4. It is loam, <br /> clay loam or silty clay loam. It is slightly alkaline, with weak or strong effervescence. <br /> ' Calcium carbonate segregations are present in some pedons. <br /> COMPETING SERIES: These are the Coland, C()mire , Delft, (iielow, James Canon, <br /> Keddie, Dimmerlithe, Donner, McClave, Pec�h, Romnell, Shandep, and \V'enas series. <br /> Coland and Comfrey soils do not have rock fragments in their control sections. In <br /> addition, Coland soils are deeper to free carbonates. Delft soils are poorly drained, are not <br /> in closed depressions, have prismatic structure in subsoil, and do not have tongues of the <br /> A horizon in the Bg horizon. Gielow,James Canyon, Keddie, Kimmerling, Konner, <br /> McClave, Peoh, and Wenas soils are drier in the soil moisture control section during the <br /> 120 days following the summer solstice. Romnell soils contain appreciable amounts of <br /> ' gypsum in their sola. Shandep soils do not have tongues of A horizon in the Bg horizon <br /> and have a coarse textured 2C horizon. <br /> ' GEOGRAPHIC SETTING: Glencoe soils typically are in closed depressions or low <br /> gradient swales within the Des Moines lobe of the Late Wisconsinan glaciation. The <br /> Glencoe soils are formed in loamy colluvial sediments and loamy glacial till. Mean <br /> ' annual temperature ranges from 45 to 52 degrees F. Mean annual precipitation ranges <br /> from 25 to 32 inches. The frost free days range from 124 to 172. The elevation above sea <br /> level range from 700 to 1600 feet. <br /> GEOGRAPHICALLY ASSOCIATED SOILS: These are the Canisteo, Clarion, I larps, <br /> Nicollet, and \A ebster soils. The well drained Clarion soils are on the sloping uplands. <br /> Somewhat poorly drained Nicollet and the poorly drained Canisteo, Webster, and Harps <br /> ' soils are on nearly level to gently undulating slopes. All the above have mollic epipedons <br /> less than 24 inches thick. In addition,the Canisteo and Harps soils contain free <br /> carbonates throughout. The Glencoe soils also are associated with the Ilayden and Lester <br /> soils and their respective topographic associates in some places. <br /> DRAINAGE AND PERMEABILITY: Very poorly drained. Surface runoff is <br /> ' negligible. Permeability is moderate or moderately slow. <br /> USE AND VEGETATION: Mostly drained and cropped to corn and soybeans. Native <br /> vegetation was a wet site plant community of the tall grass prairie plant formation. <br />