HomeMy WebLinkAbout952605.tiff Weld County, Colorado, Northern Part 13 I!4`
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4—Ascalon fine sandy loam, 0 to 6 percent slopes. 5—Ascalon fine sandy loam, 6 to 9 percent slopes. it
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 9 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
some areas of Rock outcrop. gravelly sandy loam. Also included are some areas of
Permeability of this Ascalon soil is moderate. Available Rock outcrop.
water capacity is high. Effective rooting depth is 60 Permeability of this Ascalon soil is moderate. Available
inches or more. Runoff is slow to medium, and the water capacity is high. Effective rooting depth is 60
hazard of water erosion is slight to moderate. The inches or more. Runoff is medium to rapid, and the
hazard of soil blowing is moderate. hazard of water erosion is high. The hazard of soil
This unit is used as nonirrigated cropland and blowing is moderate.
This unit is used as rangeland and nonirrigated
rangeland. Winter wheat is the main crop.
This unit is well suited to winter wheat, barley, oats, cropland. Areas of nonirrigated cropland are poorly
and sorghum. Because precipitation is not sufficient for suited for use as rangeland and should be seeded to
annual cropping, a cropping system that includes small adapted grasses.
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 fertilizer. buffalograss. The average annual production of air-dry
use of
Maintaining crop residue on or near the surface vegetation ranges from 400 to 1,300 pounds.
reduces runoff, reduces soil blowing, and helps to If the range is overgrazed, the proportion of preferred
forage plants decreases and the proportion of less
maintain soil filth 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.
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112 Soil survey
y, , TABLE 5.--SANITARY FACILITIES
[Some terms that describe restrictive soil features are defined in the Glossary. See text for definitions of
"slight," "moderate," "good," "fair," and other terms. Absence of an entry indicates that the soil was
not rated]
Soil name and Septic tank Sewage lagoon Trench Area Daily cover'
map symbol absorption areas sanitary sanitary for landfill
fields landfill landfill
1 Severe: Severe: Severe: Severe: Poor:
Altvan poor filter. seepage. seepage, seepage. seepage,
too sandy. too sandy.
2 Severe: Severe: Severe: Severe: Poor:
Altvan poor filter. seepage, seepage, seepage. seepage,
it slope. too sandy, too sandy.
} 3+:
Argiustolls.
Rock outcrop.
4 Moderate: Severe: Severe: Severe: Fair:
Ascalon percs slowly. seepage. seepage. seepage. too sandy.
5 Moderate: Severe: Severe: Severe: Fair:
Ascalon percs slowly. seepage, seepage. seepage. too sandy.
slope.
6*:
�;. Ascalon Moderate: Severe: Severe: Severe: Fair:
percs slowly, seepage, seepage. seepage. too sandy,slope. slope. slope.
Blakeland Severe: Severe: Severe: Severe: Poor:
poor filter. seepage, seepage, seepage. too sandy.
slope. too sandy.
7':
Ascalon Moderate: Severe: Severe: Severe: Fair:
percs slowly. seepage. seepage. seepage. too sandy.
Bushman Slight Severe: Severe: Severe: Good.
seepage. seepage. seepage.
Curabith Severe: Severe: Severe: Severe: Poor:
poor filter. seepage. seepage. seepage. small stones.
8':
ii Ascalon Moderate: Severe: Severe: Severe: Fair:
I:, percs slowly, seepage, seepage. seepage. too sandy,
ii'.t. . slope. slope. slope.
Bushman Moderate: Severe: Severe: Severe: Fair:
i - slope. seepage, seepage. seepage. slope.
slope.
e ,
Curabith Severe: Severe: Severe: Severe: Poor:
kI. poor filter. seepage, seepage. seepage. small stones.
y,}. slope.
t _'. 9 Severe: Severe: Moderate: Moderate: Fair:
tl" Avar percs slowl floodin flooding, floodin too clayey.Id,. Y• g• g, g•
¢,I' too clayey.
ME 10*:
�' Avar Severe: Severe: Moderate: Moderate: Fair:
percs slowly. flooding. flooding, flooding. too clayey.
l too clayey.
a. . Manzanola Severe: Moderate: Slight Slight Good.
percs slowly. seepage.
Y
See footnote at end of table.
9565
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