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KLOSSNER SERIES The Klossner series consists of very deep,very poorly drained oils formed in weli decomposed organic material 16 to 50 inches thick overlying loamy deposits on mor ines,till plains, lake plains,flood plains, and hillside seep areas.They have moderately slow to moderat ly rapid permeability in the organic material,and moderate or moderately slow permeability in the amy material. Slopes range from 0 to 8 percent.Mean annual precipitation is about 28 inches.Mean an ual temperature is about 47 degrees F. TAXONOMIC CLASS: Loamy, mixed, euic, mesi Terric Haplosaprists TYPICAL PEDON: Klossner muck- with a 1 perc nt slope in a cultivated field. (Colors are for moist soil unless otherwise stated.) Oap--O to 10 inches; black (N 2/0) muck, very dark ray(lOYR 3/1) dry; about 20 percent fiber, less than 5 percent rubbed; weak fine s bangular blocky structure; very friable; many very fine roots; moderately acid; abrup smooth boundary. Oa--10 to 26 inches; black(lOYR 2/1)muck, dark g ay(lOYR 4/1) dry; about 60 percent fiber, about 6 percent rubbed; weak fine subangular locky structure; very friable; many very fine roots; moderately acid; gradual smooth bo dary. (Combined thickness of O horizon is 16 to 50 inches.) 2A1--26 to 36 inches; black(N 2/0)mucky silty cla loam; weak medium subangular blocky structure; friable; few very fine roots; slightl acid; gradual smooth boundary. 2A2--36 to 48 inches; black(N 2/0) silty clay loam; assive; friable; few dark reddish brown(SYR 3/4) iron oxide concentrations in root c annels; about 1 percent gravel; neutral; gradual wavy boundary. (Combined thickne s of 2A horizon is 8 to 45 inches thick.) 2Cg1--48 to 65 inches; olive gray(SY 5/2) clay loa ; massive; friable; dark reddish brown(SYR 3/4) Fe oxide concentrations in root ch els; many medium prominent yellowish brown(lOYR 5/6) Fe concentrations; abo t 1 percent gravel; slightly effervescent; slightly alkaline; gradual wavy bounda . 2Cg2--65 to 80 inches; gray(SY 5/1) loam, massive; friable; many medium prominent light olive brown(2.SY 5/4) and yellowish brown(1 YR 5/4) Fe concentrations; about 3 percent gravel; slightly effervescent; slightly alkalin . TYPE LOCATION: Nicollet County, Minnesota; 2 00 feet north and 2300 feet east of the southwest corner, sec. 12, T. 110 N., R. 28 W.; SGS Nicollet quadrangle; lat. 44 degrees 20 minutes 53 seconds N. and long. 94 degr es 8 minutes 28 seconds W., NAD27. RANGE IN CHARACTERISTICS: The thickness of the organic material ranges from 16 to 50 inches. It is derived primarily from herbace us plants. The organic matter content ranges from 25 to 60 percent in the organic s rface and 5 to 20 percent in the 2A horizon. The reaction of the organic material ranges om moderately acid to slightly alkaline. Some organic layers contain free carbonate .