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Al--0 to 9 inches, black (10YR 2/1) loam, dark gray
<br /> thick, bl ck (10YR 2/1)
<br /> ('10YR, 471) when dry; weak, very fine and fine, clay films on cleavage
<br /> subangular blocky structure; very friable; planes and in root channels of upper part;
<br /> many roots; few igneous pebbles; neutral; common ligit gray (2.5Y 7/2) lime concentra-
<br /> clear, smooth boundary. tions; aboit 5 percent coarse fragments, most-
<br /> A3--9 to 13 inches, black (10YR 2/1) loam mixed with most-
<br /> ly igneous shale, and limestone; mildly
<br /> dark gray (10YR 4/1) verydark. alkaline; strongly calcareous.
<br /> gray (10YR
<br /> 3/1) when rubbed; moderate, fine, subangular The solum ran es from 24 to 48 inches in thick-
<br /> blocky structure; very friable; common roots; ness but is commonly 28 to 36 inches thick. The Al
<br /> fine, tubular pores; few igneous pebbles; horizon is 5 to0 inohes thick, and the A3 horizon
<br /> slightly acid; clear, smooth boundary. is 3 to 6 inches thick. The A horizon is typically
<br /> B1--13 to 17 inches, very dark grayish-brown (2.5Y loam but in places is light clay loam or silty clay
<br /> 3/2) loam; moderate, medium, subangular blocky loan. Distinct, high-chroma mottles are few to com-
<br /> structure parting to moderate, very fine, mon in the lower part of the B2 horizon and in some
<br /> subangular blocky structure; friable; common places are present in the upper part of the B2 hori-
<br /> roots; fine, tubular pores; common, thick, zon. The B2 horizon is light clay loam to heavy
<br /> light brownish-gray (10YR 6/2) , porous coat- loan. Clay content ranges from 27 to 35 percent but
<br /> ings on faces of peds; about 2 percent coarse typically is 30 to 35 percent in the finest textured
<br /> fragments, mostly igneous; slightly acid; layer. Sand cont nt ranges from 30 to 45 percent,
<br /> clear, smooth boundary.
<br /> B21t--17 to 21 inches, dark grayish-brown (2,5Y and 25 to 50 perc nt of the sand fraction is coarser
<br /> than fine sand. olor of the C horizon ranges from
<br /> 4/2) light clay loam; moderate, coarse, sub- yellowish brown and light brownish gray to olive
<br /> angular blocky structure parting to moderate, gray. Yellowish-brown and light olive-brown mottles
<br /> fine, subangular blocky structure; friable; are common.
<br /> few roots; common, fine, tubular pores; thin, 5 p The
<br /> e and C horizons contain about 2 to
<br /> light brownish-gray (10YR 6/2), percent of mixed lithology, but calcare-
<br /> / ), porous coat- ous fragments are absent in the B horizon. Reaction
<br /> ings on faces of peds; common, thick, very of the A horizon ranges from slightly acid to neu-
<br /> dark grayish-brown (10YR 3/2) and black (10YR tral.
<br /> 2/1) clay films on faces of peds; about 2 slightly hacidhorizon but rangestfromally neutrallto sacid to
<br /> trongly
<br /> percent coarse fragments, mostly igneous and acid.
<br /> shale; medium acid; clear, smooth boundary. Le Sueur soils have a grayer B horizon than
<br /> B22t--21 to 28 inches, olive-brown (2.5Y 4/3) clay associated Lester soils, and they are mottled in
<br /> loam; moderate, medium and coarse, prismatic the lower part of he B horizon
<br /> structure parting to moderate, coarse, sub- . They are lower inclay and sand content than similar Shorewood soils.
<br /> angular blocky structure; friable; few roots; The B horizon of L Sueur soils is lower in clay
<br /> common, fine, tubular pores; common, thick, content, has a wea er structure, and is more fri-
<br /> very dark grayish-brown (10YR 3/2) clay films able than similar erdal soils.
<br /> on faces of peds; about 2 percent coarse frag-
<br /> ments, mostly igneous and fine shale; medium
<br /> acid; clear, smooth boundary. Le Sueur loam, to 4 ercent slo es (LtB).--
<br /> 323t--28 to 32 inches, light olive-brown 2.5Y 5/4) Thispnearly level o gently sloping soil typically
<br /> light clay loam 32 ( / ) occu ies rises on ow knolls. Some areas are in
<br /> ( percent clay); moderate, shallow drainagewa s. There are a few crescent-
<br /> medium and coarse, prismatic structure part- shaped areas near 1he base of steep slopes. In most
<br /> ing to moderate, coarse, subangular blocky places this soil is closely associated with the
<br /> structure; friable; few roots; common, fine poorly drained Cordova soils, which lie in slightly
<br /> tubular pores; common, thick, very dark gray- lower positions. Areas range in size from 2 to 15
<br /> ish-brown (10YR 3/2) clay films on facesof acres.
<br /> peds; thick, black (10YR 2/1) clay films in
<br /> Shore-
<br /> root channels; about 4 percent coarse fra Included in mapp'ng were small patches of Shore-
<br /> ments, mostl i g- wood and Cordova soils.
<br /> .cloar, y oundar and shale; medium acid; The main mana em nt need of this soil is main-
<br /> to
<br /> boundary. g
<br /> m�„ a32 to 36 inches tenance of tilth. t is well suited to all the ma-
<br /> :3:Clay loan grading grayish-brown Y2(5Y 5/2) light ma-
<br /> jor crops grown in he county. It is especially
<br /> e, r to olive uc well suited to cont nuous corn and soybean produc-
<br /> b�Orate / ) ' mod-
<br /> coarse, prismatic structure parting to tion.
<br /> orate (Capability nit I-1; woodland group 1;
<br /> able coarse, subangular blocky structure; building site group 6)
<br /> , few roots; common, fine, tubular
<br /> ;• rQg; few, thick, black (10YR 2/1) clay films
<br /> hFaces of peds and in root channels; about
<br /> Aooreent coarse fragments, mostly igneous and Litchfield Series
<br /> slightly acid; clear, smooth boundary.
<br /> 60 inches, light brownish-gray (2.5Y 6 The Litchfield series consists of deep, moderate-
<br /> �vy loam; common, fine, prominent, light ) ly well drained, sa dy soils that formed in sandy
<br /> Yo-brown (2.5Y 5 6 alluvium that contains thin layers of loam. These
<br /> friable /6) mottles; few pores;
<br /> soils are in broad, (level areas on the Mississippi
<br /> few, fine tubular ores; few, River outwash plain in the northeastern part ofthe
<br /> i
<br /> 3; 55
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