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ss • son. suav»r, •
<br />.beets. Under dryland management it is well suited to
<br />pasture or native grasses sad, to a leaser extent, wheat
<br />and barley. Capability units IIIe-6, irrigated, sad
<br />IVe-6, dryland; Loamy Plains range site; windbreak
<br />suitability group 2.
<br />62-LarimerStoneham eomple:, 3 to 10 percent
<br />rlopa. This complex consists of gently sloping to
<br />strongly eloping soils on terraces, fans, and benches.
<br />It is about 36 percent Lorimer. fine sandy loam, about
<br />26 percent Stoneham loam, and about 20 rcent
<br />Cushman fine sandy loam. Lorimer fine sandy loam is
<br />on aide elopes and areas near terrace edges, Stoneham
<br />loam commonly has the more gentle elopes on terraces,
<br />and Cushman fine sandy loam is on aide slopes.
<br />Included with these soils in mapping are about 20
<br />percent areas of Fort Co]lins, Larim, Altvan, and
<br />Satanta soils. Also included are some small areas of
<br />soils that are more sloping.
<br />Runoff is medium to rapid, and the hazard of erosion
<br />ie moderate to severe.
<br />This soil is well suited to pasture and native grasses
<br />under dryland management. If irrigated, it is suited
<br />to pasture and, to a leaser extent, barley, wheat, and
<br />alfalfa. Capability unite IVe-1, irrigated, and VIe-2,
<br />dryland; Loamy Plains range site; windbreak euit>
<br />ability getup 2.
<br />Lougmont Series
<br />The Longmont series consists of deep, poorly
<br />drained soils that formed in alluvium mainly from
<br />clap shale. These soils are oa flood plains, terraces, and
<br />valleys. Elevation ranges from 4,800 to b,800 feet.
<br />Slopes are 0 to 3 percent. The native vegetation is
<br />mainly alkali eacaton, saltgrasa, sedges, and other
<br />water-tolerant grasses. Mean annual precipitation
<br />ranges from 13 to 16 inches, mean annual sir tempera-
<br />ture ranges from 48° to 60° F, and the frost-free aea-
<br />eon ranges from 135 to 160 days.
<br />In a representative profile the surface layer is light
<br />brownish gray clay about 17 inches thick. The under-
<br />lying material is mottled pale olive clay.
<br />Permeability is slow, and the available water ca-
<br />pacity is high. Reaction is strongly alkaline above a
<br />depth of 40 inches and moderately alkaline below that
<br />depth•
<br />These soils are used for native grasses.
<br />Representative profile of Longmont clay, 0 to 3 per-
<br />cent elopes, in native grass, about 1,350 feet east and
<br />b0 feet north oY the southwest corner of sec. 17, T. 6 N.,
<br />R. lib W.:
<br />All-0 to 7 inches; light brownish gray (2.6Y
<br />8/2) clay, dark grayish brown 2.6Y
<br />4/2) moist; weak medium eubanguhtr
<br />blocky structure; hard, very firm ;
<br />strongly effervescent; strongly alkaline;
<br />clear smooth boundary.
<br />A12-7 to 17 inches; light brownish gray (2.6Y
<br />B/2) clay, dark grayish brown (2.bY
<br />4/2) moist; weak coarse eubangular
<br />blocky structure; very hard, very firm;
<br />strongly effervescent; strongly alkaline;
<br />Clcscag ~17dtoa140ainchbeea~;ndpale~olive (6Y 6/3)
<br />clay, olive (bY 9 p3) moist; massive;
<br />very hard, very firm; common medium
<br />distinct mottles of yellowish brown
<br />(10 YR 6/ff) moist; calcium sulfate ac-
<br />cumulations m seams and streaks and
<br />calcium carbonate in spots; strongly
<br />effervescent; strongly alkaline; gradual
<br />wavy boundary.
<br />C2cscag--40 to 60 inches; pale olive (bY 6/3)
<br />clay, olive (6Y 6/3) moist; massive;
<br />very hard, very firm; common medium
<br />distinct mottles of olive (5Y 4/3 and
<br />4/4) moist; calcium sulfate accumula-
<br />tions is seams and streaks and calcium
<br />carbonate in spots; strongly efferves-
<br />cent; moderately alkaline.
<br />The A horizon is clay loam or clay 12 to 21 inches
<br />thick. The C horizon is heavy clay loam or clay. Reac-
<br />tion is strongly alkaline or very strongly alkaline in
<br />the surface layer but decreases with increasing depth.
<br />The water table ie near the surface for part of every
<br />year.
<br />GS~LOOgIDOnt clay. 0 to 3 percent eloper. Th18
<br />nearly level soil is on flood plains and upland valleys.
<br />Included with this soil in mapping are some atnall
<br />areas of soils that are more eloping and a few small
<br />areas of soils that have a surface layer and subsurface
<br />la er of clay loam. Also included ate a few small areas
<br />of soils in which gravel is at a depth of 40 to 60
<br />inches.
<br />Runoff is slow, and the hazard of erosion is alight.
<br />This soil is suited to pasture or native grasses
<br />(fig. 9). Capability unit VIw-2, dryland; Salt Meadow
<br />range site; windbreak suitability group 4.
<br />Loveland Series
<br />The Loveland series consists of deep, somewhat
<br />poorly drained soils that formed in material weathered
<br />from alluvium. These soils are on terraces and flood
<br />plains and are underlain by sand and gravel at a depth
<br />of 20 to 40 inches. Elevation ranges from 4,800 to
<br />6,600 feet. Slopes are 0 to 1 percent. The native vegeta-
<br />tion is mainly blue grams, bluegras9, and sedges. Mean
<br />annual precipitation ranges from 13 to 15 inches, mean
<br />annual air temperature ranges from 48° to 60° F, and
<br />the frost-free season ranges from 136 to 1b0 days.
<br />In a representative profile the surface layer is mot-
<br />fled dark grayish brown or grayish brown clay loam
<br />about 16 inches thick. The underlying material is 17
<br />inches of grayish brown clay loam over sand, gravel,
<br />and cobbles.
<br />Permeability is moderately slow above a deppth of
<br />about 82 inches and very rapid below that depth. Tht
<br />available water capacity is medium to higgh. Reaction
<br />is mildly alkaline above a depth of about 8 inches tud
<br />moderately alkaline below that depth.
<br />These soils are used mainly for irrigated and dry•
<br />farmed crops and !or pasture.
<br />Representative profile of Loveland clay loam, 0 to 1
<br />percent elopes, In grass, 2,260 feet north and 600 feat
<br />west of the southeast corner of sec. 10, T. 6 N., R 6i
<br />W.:
<br />All--0 to 8 .inches; dark grayish brown (lOYlt
<br />4/2) clay loam, very dark brown (10Y11
<br />2/2) moist; weak to moderate fine yrto-
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