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<br />~Id County, Colorado, Northern Part
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<br />This map unit is in capability subclass IVe,
<br />Inirrigated, and in Sandy Plains range site.
<br />
<br />16-Bresser sandy loam, 3 to 9 percent slopes.
<br />lis deep, well drained soil is on highly dissected high
<br />ains. It formed in.sandy alluvium.
<br />Typically, the surface layer is dark grayish brown
<br />larse sandy loam 15 inches thick. The subsoil is sandy
<br />ay loam 19 inches thick. The substratum to a depth of
<br />I inches or more is loamy coarse sand. In some areas
<br />e surface layer is loamy coarse sand.
<br />Included in this unit are small areas of Altvan fine
<br />~ndy loam.
<br />'Permeability of this Bresser soil is moderate. Available
<br />ater capacity is moderate. Effective rooting depth is 60
<br />~hes or more. Runoff is medium, and the hazard of
<br />~ter erosion is moderate to high. The hazard of soil
<br />bwing is moderate.
<br />This unit is used as rangeland.
<br />The potential plant community on this unit is mainly
<br />ue grama, needleandthread, and prairie sandreed. The
<br />,erage annual production of air-dry vegetation ranges
<br />Jm 700 to 1,800 pounds.
<br />If the range is overgrazed, the proportion of preferred
<br />,rage plants decreases and the proportion of less
<br />'eferred forage plants increases. Therefore, livestock
<br />azing should be managed so that the desired balance
<br />, preferred species is maintained in the plant
<br />)mmunity.
<br />Range seeding is suitable if the range is in poor
<br />Jndition. The plants selected for seeding should meet
<br />Ie seasonal requirements of livestock or wildlife, or
<br />Jth. Other management practices that are suitable for
<br />se on this unit are proper range use, deferred grazing,
<br />nd rotation grazing. If the plant cover is disturbed,
<br />rotection from erosion is needed. Loss of the surface
<br />'yer results in a severe decrease in productivity and in
<br />Ie potential of the soil to preduce plants suitable for
<br />razing.
<br />This unit is well suited to windbreaks and
<br />nvironmental plantings. Supplemental irrigation may be
<br />eeded when planting and during dry periods.
<br />This map unit is in capability subclass Vie,
<br />onirrigated, and in Sandy Plains range site.
<br />
<br />17-Bushman tine sandy loam, 0 to 3 percent
<br />lopes. This deep, well drained soil is on slightly
<br />issected alluvial fans. It formed in calcareous loamy
<br />IIuvium.
<br />Typically, the surface lay'er is brown fine sandy loam
<br />o inches thick. Below this to a depth of 60 inches or
<br />lore is sandy loam.
<br />Included in this unit are small areas of Wages fine
<br />andy loam.
<br />Permeability of this Bushman soil is moderately rapid.
<br />.vailable water capacity is mederate. Effective rooting
<br />epth is 60 inches or more. Runoff is slow, and the
<br />azard of water erosion is slight. The hazard of soil
<br />lowing is moderate.
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<br />19
<br />
<br />This unit is used as rangeland and nonirrigated
<br />cropland. Winter wheat is the main crop.
<br />The potential plant community on this unit is mainly
<br />blue grama, needleandthread, and prairie sandreed. The
<br />average annual production of air-dry vegetation ranges
<br />from 700 to 1,800 pounds. .
<br />If the range is overgrazed, the proportion of preferred
<br />forage plants decreases and the proportion of less
<br />preferred forage plants increases. Therefore, livestock
<br />grazing should be managed so that the desired balance
<br />of preferred species is maintained in the plant
<br />community. \
<br />Range seeding is suitable if the range is in poor
<br />condition. The plants selected for seeding should meet
<br />the seasonal requirements of livestock or wildlife, or
<br />both. Other management practices that are suitable for
<br />use on this unit are proper range use, deferred grazing,
<br />and rotation grazing. If the plant cover is disturbed,
<br />protection from soil blowing is needed. Loss of the
<br />surface layer results In a severe decrease in productivity
<br />and in the potential of the soil to produce plants suitable
<br />for grazing.
<br />This unit is suited to winter wheat, barley, oats, and
<br />sorghum. Because precipitation is not sufficient for
<br />annual cropping, a cropping system that includes small
<br />grain and summer fallew is most suitable. Precipitation
<br />usually is too low for crops on this unit to make efficient
<br />use of fertilizer.
<br />Maintaining crop residue on or near the surface
<br />reduces runoff, reduces soil blowing, and helps to
<br />maintain soil tilth and organic matter content. Stubble-
<br />mulch farming, stripcropping, and minimum tillage help to
<br />control erosion and conserve moisture. Terraces reduce
<br />runoff and the risk of erosion and help to conserve
<br />moisture.
<br />This unit is well suited to windbreaks and
<br />environmental plantings. Soil blowing can be reduced by
<br />cultivating only in the tree rows and by leaving a strip of
<br />vegetation between the rows. Supplemental irrigation
<br />may be needed when planting and during dry periods.
<br />This map unit is in capability subclass IVe,
<br />non irrigated, and in Sandy Plains range site.
<br />
<br />18-Bushman fine sandy loam, 3 to 9 percent
<br />slopes. This deep, well drained soil is on moderately
<br />dissected to highly dissected alluvial and colluvial fans. It
<br />formed in calcareous loamy alluvium and colluvium.
<br />Typically, the surface layer is brown fine sandy loam 6
<br />inches thick. Below this to a depth of 60 inches or more
<br />is sandy loam.
<br />Included in this unit are small areas of Wages fine
<br />sandy loam.
<br />Permeability of this Bushman soil is moderately rapid.
<br />Available water capacity is mederate. Effective roeting
<br />depth is 60 inches or more. Runoff is medium, and the
<br />hazard of water erosion is moderate to high. The hazard
<br />of soil blowing is moderate.
<br />This unit is used as rangeland.
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