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Climatic data: <br />Mean annual precipitation: 18 to 22 inches <br />(457 to 559 millimeters) <br />Mean annual air temperature: 37 to 40 <br />degrees F (2.8 to 4.4 degrees C) <br />Frost -free period. 50 to 75 days <br />Taxonomic class: Fine -loamy, mixed Cryic Pachic <br />Paleborolls <br />Typical Pedon <br />Map Unit in which located. Foidel loam, 3 to 25 <br />percent slopes <br />Oi - 0 to 2 inches, very dark brown (10YR 3/4) and <br />dark brown (10YR 3/3) partly decomposed leaf <br />pieces and decaying twigs. <br />Al - 2 to 12 inches; gray (10YR 5/1) loam, very dark <br />gray (10YR 3/1) moist; weak very coarse to medium <br />granular structure; slightly hard, very friable, slightly <br />sticky and slightly plastic; neutral; clear wavy <br />boundary. <br />A2 - 12 to 28 inches; gray (10YR 4/2) clay loam, <br />very dark brown (10YR 2/2) moist; moderate <br />medium and coarse subangular blocky structure; <br />soft, very friable, sticky and plastic; neutral; clear <br />wavy boundary. <br />E/B - 28 to 32 inches; light grayish brown (1 OYR 6/2) clay <br />loam, very dark brown (10YR 3/2) moist; moderate fine <br />and medium subangular blocky and weak medium platy <br />structure; very hard, friable, sticky and plastic; neutral; <br />clear wavy boundary. <br />B/E - 32 to 39 inches: 70 percent pale brown (10YR 6/3) <br />clay loam, brown (1 OYR 4/3) moist with 30 percent very <br />light brownish gray (10YR 6/2) clay loam, very dark <br />grayish brown (1 OYR 3/2) moist; moderate medium <br />subangular blocky structure, very hard, firm, sticky and <br />plastic; neutral; clear wavy boundary. <br />Bt - 39 to 60 inches; light yellowish brown (10YR 6/4) clay <br />loam, yellowish brown (11 OYR 5/4) moist; strong coarse <br />angular blocky structure; very hard, firm, sticky and <br />plastic; very few faint clay films on faces of peds and <br />along interstitial pores; neutral. <br />Range in Characteristics <br />Particle -size control section (weighted average): <br />Rock fragment content. 0 to 10 percent <br />Thickness of the mollic epipedon: 20 to 35 inches <br />E/B horizon: <br />Texture: sandy clay loam, loam, or clay loam <br />Clay content: 24 to 35 percent <br />Reaction: moderately acid or slightly acid <br />Bt horizon: <br />Texture: sandy clay loam with 20 to 35 percent clay <br />Reaction: moderately acid or sliqhtly acid <br />