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LESTER SERIES <br /> The Lester series consists of very deep,well drained soils t}�at formed in catcareous loamy glacial till on till <br /> plains a��d moraines.These soils have moderate penneability.Their s(opes range from 5 to 70 percent. <br /> �fean annual precipitation is about 28 inches. �1ean annual temperature is about 47 degrees F. <br /> TAXONOMIC CLASS: Fine-loamy, mixed, superactive,mesic Moilic Hapludalfs <br /> TYPICAL PEDON: Lester loam with a convex slope of about 9 percent on a gcound <br /> moraine in a cultivated field, (Co(ors are for moist soi( unless otherwise nated.) <br /> Ap--O to 7 inches; very dark grayish brown (lOYR 3/2) loam, grayish brown(lOYR 5/2) <br /> dry; moderate fine subangular blocky structure; friable; many fine roots; about 3 percent <br /> gravel; slightly acid; abrupt smooth boundary. (6 to l0 inches thick) <br /> Btl--7 to 2l inches; brown (lOYR 4/3)clay loam; moderate medium subangular blocky <br /> structure; firm; many very fine roots;common very dark grayisl� brown (lOYR 3/2) clay <br /> tilms on faces of peds and few very dark gray(1 OYR 3/1)organic coats on faces of peds; <br /> about 2 percent gravel; slightly acid;clear smooth boundary. <br /> Bt2--21 to 38 inches; dark yellowish brown (1 OYK 4/4) clay loam; rrtoderate medium <br /> subanguiar biocky structure; friable; common fine roots; common dark grayish brown <br /> (l OYR 4/2) clay films on faces of peds and few very dark brown (lOYR 2/2}organic <br /> coats on faces of peds; about 3 percent gravel; slightly acid;gradual smooth boundary. <br /> (Combined Bt horizon is IO to�0 inches.} <br /> Bk1--38 to 50 inches; yellowish brown (lOYR S/4) loam; weak medium subangular <br /> blocky structure; friab(e; few fine roots; common very pale brown (lOYR 8/2) carbonate <br /> threads; about 2 percent gravel; violently effervescent; s[ightly alkaline; clear wavy <br /> boundary. <br /> Bk2--50 to 60 inches; yellowish brown (lOYR 5/4) loam; weak medium subangular <br /> blocky structure; friable; common fine distinct yellowish brown (l 0YR 5/6)retict Fe <br /> concentrations; cammon very pale brown(lOYR 8/2) carbonate threads; about 2 percent <br /> gravel; violently effecvescent; slightly alkaline; clear wavy boundary. <br /> C--60 to 80 inches; yetlowish brown (lOYR S/�l) loam; ; massive; friable; common <br /> medium distinct yellowish brown (lOYR S/6) reIict Fe concentrations and few fine <br /> distinct light brownish gray(lOYR 6/2) relict Fe depletions; about 1 percent gravel; <br /> strongly effervescent; slightly alkaline. <br /> TYPE LOCATION: Wright County, Minnesota; about 3 miles west of Otsego, 1�60 <br /> feet south and 200 feet west of the northeast corner of Sec, I 5,T.l21 N., R.24 W.; USGS <br /> Big Lake quadrangle; lat. 45 degcees 17 minutes 29 seconds N.; long. 93 degrees 41 <br /> minutes 3 seconds W., NAD27 <br /> RA1�1GE IN CHARACTERISTICS: Depth to free carbonates ranges from 20 to 54 <br /> inches. Rock fragments of mixed lithology comprise 1 to 8 percent of the volume of the <br /> control section, <br />