HomeMy WebLinkAbout960489.tiff Weld County, Colorado, Northern Part 13
4—Ascalon fine sandy loam, 0 to 6 percent slopes. 5—Ascalon fine sandy loam, 6 to 9 percent slopes.
This deep, well drained soil is on smooth to moderately This deep, well drained soil is on moderately dissected
dissected plains. It formed in calcareous loamy alluvium. to highly dissected plains. It formed in calcareous loamy
Typically, the surface layer is dark brown fine sandy alluvium.
loam 8 inches thick. The subsoil is sandy clay loam 14 Typically, the surface layer is dark brown fine sandy
inches thick. The substratum to a depth of 60 inches or loam 6 inches thick. The subsoil is sandy clay loam 15
more is calcareous sandy loam. In some areas the inches thick. The substratum to a depth of 60 inches or
surface layer is loam. more is calcareous sandy loam. In some areas the
Included in this unit are small areas of Ascalon fine surface layer is loam.
sandy loam that has slopes of 6 to J-percent, Olney fine Included in this unit are small areas of Altvan fine
sandy loam, and Otero sandy loam. Also included are sandy loam, Cascajo gravelly sandy loam, and Peetz
gravelly sandy loam. Also included are some areas of
some areas of Rock outcrop.
Permeability of this Ascalon soil is moderate. Available Rock outcrop.
Permeability of this Ascalon soil is moderate. Available
water capacity is high. Effective rooting depth is 60
water capacity is high. Effective rooting depth is 60
inches or more. Runoff is slow to medium, and the
hazard of water erosion is slight to moderate. The inches or more. Runoff is medium to rapid, and the
hazard of water erosion is high. The hazard of soil
hazard of soil blowing is moderate.
blowing is moderate.
This unit is used as nonirrigated cropland and
rangeland. Winter wheat is the main crop. This unit is used as rangeland and nonirrigated
This unit is well suited to winter wheat, barley, oats, cropland. Areas of nonirrigated cropland are poorly
suited for use as rangeland and should be seeded to
and sorghum. Because precipitation is not sufficient for adapted grasses.
annual cropping, a cropping system that includes small The potential plant community on this unit is mainly
grain and summer fallow is most suitable. Precipitation blue grama, western wheatgrass, sedges, and
usually is too low for crops on this unit to make efficient buffalograss. The average annual production of air-dry
use of fertilizer. vegetation ranges from 400 to 1,300 pounds.
Maintaining crop residue on or near the surface If the range is overgrazed, the proportion of preferred
reduces runoff, reduces soil blowing, and helps to forage plants decreases and the proportion of less
maintain soil tilth and organic matter content. Stubble- preferred forage plants increases. Therefore, livestock
mulch farming, striperopping, and minimum tillage help to grazing should be managed so that the desired balance
control erosion and conserve moisture. Terraces reduce of preferred species is maintained in the plant
runoff and the risk of erosion and help to conserve community.
moisture. Range seeding is suitable if the range is in poor
The potential plant community on this unit is mainly condition. The plants selected for seeding should meet
blue grama, western wheatgrass, sedges, and the seasonal requirements of livestock or wildlife, or
buffalograss. The average annual production of air-dry both. Other management practices that are suitable for
vegetation ranges from 500 to 1,500 pounds. use on this unit are proper range use, deferred grazing,
If the range is overgrazed, the proportion of preferred and rotation grazing. If the plant cover is disturbed,
forage plants decreases and the proportion of less protection from erosion is needed. Loss of the surface
preferred forage plants increases. Therefore, livestock layer results in a severe decrease in productivity and in
grazing should be managed so that the desired balance the potential of the soil to produce plants suitable for
of preferred species is maintained in the plant grazing.
community. This unit is well suited to windbreaks and
Range seeding is suitable if the range is in poor environmental plantings. Supplemental irrigation may be
condition. The plants selected for seeding should meet needed when planting and during dry periods.
the seasonal requirements of livestock or wildlife, or This map unit is in capability subclass Vle,
both. Other management practices that are suitable for nonirrigated, and in Loamy Plains range site.
use on this unit are proper range use, deferred grazing,
and rotation grazing. If the plant cover is disturbed, 6—Ascalon-Blakeland complex, 3 to 15 percent
protection from erosion is needed. Loss of the surface slopes. This map unit is on alluvial and colluvial fans
layer results in a severe decrease in productivity and in and on moderately dissected to highly dissected plains.
the potential of the soil to produce plants suitable for This unit is 50 percent Ascalon fine sandy loam and
grazing. 30 percent Blakeland loamy sand. The components of
This unit is well suited to windbreaks and this unit are so intricately intermingled that it was not
environmental plantings. Supplemental irrigation may be practical to map them separately at the scale used.
needed when planting and during dry periods. Included in this unit is about 20 percent Bushman fine
This map unit is in capability subclass IVe, sandy loam, Bresser sandy loam, and Wages fine sandy
nonirrigated, and in Loamy Plains range site. loam.
EXHIBIT
960489 I
32 Soil survey
Typically, the surface layer is pale brown loamy sand 5 Typically, the surface layer is pale brown loamy sand 4
inches thick. The subsoil is sandy clay loam 29 inches inches thick. The subsoil is sandy clay loam 27 inches
thick. The substratum to a depth of 60 inches or more is thick. The substratum to a depth of 60 inches or more is
calcareous sandy loam. calcareous sandy loam.
Included in this unit are small areas of Olney fine Included in this unit are small areas of Olney fine
sandy loam, Ascalon fine sandy loam, and Stoneham sandy loam, Ascalon fine sandy loam, and Stoneham
fine sandy loam. fine sandy loam.
Permeability of this Olney soil is moderate. Available Permeability of this Olney soil is moderate. Available
water capacity is moderate. Effective rooting depth is 60 water capacity is moderate. Effective rooting depth is 60
inches or more. Runoff is medium, and the hazard of inches or more. Runoff is medium, and the hazard of
water erosion is slight. The hazard of soil blowing is high. water erosion is moderate. The hazard of soil blowing is
Most areas of this unit are used as nonirrigated high.
cropland. Winter wheat is the main crop. A few areas are This unit is used as rangeland.
used as rangeland. The potential plant community on this unit is mainly
This unit isa aused t winter is not barley,sufficient oats, and blue grama, prairie sandreed, and needleandthread. The
sorghum.c Aping, a i
y is t includes for average annual production of air-dry vegetation ranges
annual cropping, a cropping most suitable.that Precipitation from 700 to 1,800 pounds.
grain su and summer fallow is most make If the range is overgrazed, the proportion of preferred
usually is too low for crops on this unit to make efficient g g
use of fertilizer. forage plants decreases and the proportion of less
Maintaining crop residue on or near the surface preferred forage plants increases. Therefore, livestock
reduces runoff, reduces soil blowing, and helps to grazing should be managed so that the desired balance
maintain soil tilth and organic matter content. Stubble- of preferred species is maintained in the plant
mulch farming, striperopping, and minimum tillage help to community.
control erosion and conserve moisture. Terraces reduce Range seeding is suitable if the range is in poor
runoff and the risk of erosion and help to conserve condition. The plants selected for seeding should meet
moisture. the seasonal requirements of livestock or wildlife, or
The potential plant community on this unit is mainly both. Other management practices that are suitable for
blue grama, prairie sandreed, and needleandthread. The use on this unit are proper range use, deferred grazing,
average annual production of air-dry vegetation ranges and rotation grazing. If the plant cover is disturbed,
from 800 to 2,000 pounds. protection from erosion is needed. Loss of the surface
If the range is overgrazed, the proportion of preferred layer results in a severe decrease in productivity and in
forage plants decreases and the proportion of less the potential of the soil to produce plants suitable for
preferred forage plants increases. Therefore, livestock
grazing should be managed so that the desired balance grazing.This unit is well suited to windbreaks and
of preferred species is maintained in the plant environmental plantings. Soil blowing can be reduced by
community. cultivating only in the tree rows and by leaving a strip of
Range seeding is suitable if the range is in poor vegetation between the rows. Supplemental irrigation
condition. The plants selected for seeding should meet may be needed when planting and during dry periods.
the seasonal requirements of livestock or wildlife, or This map unit is in capability subclass Vle,
both. Other management practices that are suitable for nonirrigated, and in Sandy Plains range site.
use on this unit are proper range use, deferred grazing,
and rotation grazing. If the plant cover is disturbed, 44—Olney fine sandy loam, 0 to 6 percent slopes.
protection from soil blowing is needed. Loss of the This deep, well drained soil is on smooth to moderately
surface layer results in a severe decrease in productivity dissected plains. It formed in calcareous loamy alluvium.
and in the potential of the soil to produce plants suitable Typically, the surface layer is brown fine sandy loam 6
for grazing. inches thick. The upper 12 inches of the subsoil is sandy
This unit is well suited to windbreaks and clay loam or loam, and the lower 10 inches is calcareous
environmental plantings. Soil blowing can be reduced by sandy loam. The substratum to a depth of 60 inches or
cultivating only in the tree rows and by leaving a strip of more is calcareous sandy loam.
vegetation between the rows. Supplemental irrigation Included in this unit are small areas of Olney loamy
This map unit is in capabb
may be needed when planting and during dry periods. sand, Ascalon fine sandy loam, and Stoneham fine
ility subclass IVe, ndy loam.
nonirrigated, and in Sandy Plains range site. saPermeability of this Olney soil is moderate. Available
43—Olney loamy sand, 3 to 9 percent slopes. This water capacity is high. Effective rooting depth is 60
deep, well drained soil is on moderately dissected to hazard of water erosion inches or
Runoff ff i s sight to ow to medium, and
The
highly dissected plains. It formed in calcareous loamy hazard of soit blowing n slight.
alluvium.
950 t89
Weld County, Colorado, Northern Part 33
Most areas of this unit are used as nonirrigated Included in this unit are small areas of Olney loamy
cropland. Winter wheat is the main crop. A few areas are sand, Ascalon fine sandy loam, Stoneham fine sandy
used as rangeland. loam, and Vona sandy loam.
This unit is suited to winter wheat, barley, oats, and Permeability of this Olney soil is moderate. Available
sorghum. Because precipitation is not sufficient for water capacity is high. Effective rooting depth is 60
annual cropping, a cropping system that includes small inches or more. Runoff is medium, and the hazard of
grain and summer fallow is most suitable. Precipitation water erosion is moderate to high. The hazard of soil
usually is too low for crops on this unit to make efficient blowing is moderate.
use of fertilizer. This unit is used as rangeland.
Maintaining crop residue on or near the surface The potential plant community on this unit is mainly
reduces runoff, reduces soil blowing, and helps to blue grama, western wheatgrass, sedges, and
maintain soil tilth and organic matter content. Stubble- buffalograss. The average annual production of air-dry
mulch farming, stripergpping, and minimum tillage help to vegetation ranges from 400 to 1,300 pounds.
control erosion and conserve moisture. Terraces reduce If the range is overgrazed, the proportion of preferred
runoff and,the risk of erosion and help to conserve forage plants decreases and the proportion of less
moisture. preferred forage plants increases. Therefore, livestock
The potential plant community on this unit is mainly grazing should be managed so that the desired balance
blue grama, western wheatgrass, sedges, and of preferred species is maintained in the plant
buffalograss. The average annual production of air-dry community.
vegetation ranges from 500 to 1,500 pounds. Range seeding is suitable if the range is in poor
If the range is overgrazed, the proportion of preferred condition. The plants selected for seeding should meet
forage plants decreases and the proportion of less the seasonal requirements of livestock or wildlife, or
preferred forage plants increases. Therefore, livestock both. Other management practices that are suitable for
grazing should be managed so that the desired balance use on this unit are proper range use, deferred grazing,
of preferred species is maintained in the plant and rotation grazing. If the plant cover is disturbed,
community. protection from erosion is needed. Loss of the surface
Range seeding is suitable if the range is in poor layer results in a severe decrease in productivity and in
condition. The plants selected for seeding should meet the potential of the soil to produce plants suitable for
the seasonal requirements of livestock or wildlife, or grazing.
both. Other management practices that are suitable for This unit is well suited to windbreaks and
use on this unit are proper range use, deferred grazing, environmental plantings. It is limited mainly by the hazard
and rotation grazing. If the plant cover is disturbed, of soil blowing where the surface is barren of vegetation.
protection from erosion is needed. Loss of the surface Soil blowing can be reduced by cultivating only in the
Layer results in a severe decrease in productivity and in tree rows and by leaving a strip of vegetation between
the potential of the soil to produce plants suitable for the rows. Supplemental irrigation may be needed when
grazing. planting and during dry periods. Summer fallow,
This unit is well suited to windbreaks and cultivation for weed control, and selection of adapted
environmental plantings. It is limited mainly by the hazard plants are needed to insure establishment and survival
of soil blowing where the surface layer is barren of of seedlings.
vegetation. Soil blowing can bg reduced by cultivating This map unit is in capability subclass Vle,
only in the tree rows and by leaving a strip of vegetation nonirrigated, and in Loamy Plains range site.
between the rows. Supplemental irrigation may be
needed when planting and during dry periods. Summer 46—Otero sandy loam, 0 to 3 percent slopes. This
tallow, cultivation for weed control, and selection of deep, well drained soil is on smooth to moderately
adapted plants are needed to insure establishment and dissected plains and alluvial fans. It formed in calcareous
survival of seedlings. loamy alluvium.
This map unit is in capability subclass IVe, Typically, the surface layer is brown sandy loam 5
ronirrigated, and in Loamy Plains range site. inches thick. The underlying material to a depth of 60
inches or more is sandy loam. The soil is calcareous
45—Olney fine sandy loam, 6 to 9 percent slopes. throughout.
fres deep, well drained soil is on moderately dissected Included in this unit are small areas of Stoneham fine
so highly dissected plains. It formed in calcareous loamy sandy loam, soils that have a gravelly surface layer or
rwvium. gravelly underlying material, Kim and Mitchell soils, and
Typically, the surface layer is brown fine sandy loam 6 Bushman fine sandy loam. Included areas make up
rches thick. The upper 12 inches of the subsoil is sandy about 20 percent of the total acreage.
.uy loam or loam, and the lower 10 inches is calcareous Permeability of this Otero soil is moderately rapid.
windy loam. The substratum to a depth of 60 inches or Available water capacity is moderate. Effective rooting
-+ore is calcareous sandy loam. depth is 60 inches or more. Runoff is slow, and the
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