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46 SOIL SURVEY
Permeability is rapid. Available water capacity is p y yellowish brown fine sandy loam about 16 inches thick. 5r•:,
moderate. A water table is at or near the surface in The substratum to a depth of 60 inches is sandy loam.
spr^usd about 36 inches below the surface in fall. Sur- Permeability is moderately rapid. Available water
face _,moff is slow, and the erosion hazard is low. capacity is moderate. The effective rooting depth is 60
This unit is used for rangeland and wildlife habitat. The inches or more. Surface runoff is slow, and the erosion
potential native vegetation on the Valent soil is hazard is low. 414
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dominated by sand reedgrass, sand bluestem, blue and In irrigated areas this soil is suited to the crops com- ,
hairy grama, little bluestem, needleandthread, and monly grown in the area. Perennial grasses and alfalfa or
sideoats grama. Potential production ranges from 1,800 close grown crops should be grown at least 50 percent of
pounds per acre in favorable years to 1,400 pounds in un- the time. Contour ditches and corrugations can be used in
favorable years. As range condition deteriorates, the sand irrigating close grown crops and pasture. Furrows, con- ,
bluestem, sand reedgrass, sideoats grama, and little tour furrows, and cross slope furrows are suitable for row ki
bluestem decrease; sandhill muhly and blowout grass in- crops. .irrigation is also desirable. Keeping til- l„'
crease, and forage production drops. "Blowouts" occur as lage to a minimum and utilizing crop residue help to con- i
range condition becomes poorer.p trol erosion. Maintaining fertility is important. Crops
The native vegetation on the Loup soil is dominated by respond to applications of phosphorus and nitrogen.
switchgrass, little bluestem, sand reedgrass, and western In nonirrigated areas this soil is suited to winter wheat, i�`,
wheatgrass. Indiangrass, sand bluestem, prairie cordgrass, barley, and sorghum. Most of the acreage is planted to
slender wheatgrass, alkali sacaton, saltgrass, sedge, and winter wheat. The predicted average yield is 20 bushels
rush are also present. Potential production ranges from per acre. The soil is summer fallowed in alternate years
4,000 pounds per acre in favorable years to 3,000 pounds to allow moisture accumulation. Generally precipitation is
in unfavorable years. As range condition deteriorates, the too low for beneficial use of fertilizer.
switchgrass, sand bluestem, indiangrass, little bluestem, Stubble mulch farming, striperopping, and minimum til- :)4e
and prairie cordgrass decrease, and saltgrass, blue grama, lage are needed to control soil blowing and water erosion. ",r`'+'
sand dropseed, sedge, and rush increase. Undesirable Terracing also may be needed to control water erosion. '
weeds and annuals invade the site as range condition The potential native vegetation on this range site is 4
becomes poorer. dominated by sand bluestem, sand reedgrass, and blue Q
Seeding with an interseeder is advisable if the range is grama. Needleandthread, switchgrass, sideoats grams,
in poor condition. Sand reedgrass, sand bluestem, sideoats and western wheatgrass are also prominent. Potential
granw.,switchgrass, little bluestem, indiangrass, and blue production ranges from 2,200 pounds per acre in favors- i44
gra ire suitable for seeding. Seeding early in spring ble years to 1,800 pounds in unfavorable years. As range f
has proven most successful. Grazing should be light to condition deteriorates, the sand bluestem, sand reedgrass,
prevent range deterioration. and switch4'grass decrease and blue grama, sand dropseed, '
Wildlife is an important secondary use of this unit. On and sand sage increase. Annual weeds and grasses invade
the Valent soil, rangeland wildlife, for example, the the site as range condition becomes poorer.
pronghorn antelope, can be attracted by developing Management of vegetation on this soil should be based ",
livestock watering facilities, managing livestock grazing, on taking half and leaving half of the total annual produc-
and reseeding where needed. tion. Seeding is desirable if the range is in poor condition.
The Loup soil, which is typically wet and produces an Sand bluestem, sand reedgrass, switchgrass, E^ ;
abundance of wetland vegetation, attracts wetland wil- grama, blue crested
grama, pubescent wheatgrass, and crested t.
dlife species, such as mallard, teal, geese, and miscellane- wheatgrass are suitable for seeding. The grass selected
ous shorebirds. Primary management of this soil for wet- should meet the seasonal requirements of livestock. It
land wildlife includes managing livestock grazing, fencing should be drilled into a clean, firm sorghum stubble or a +!a
to control livestock, protecting from fire, and preventing prepared seedbed. Seeding early in spring has proven
drainage. Natural wetland vegetation should be allowed most successful. ;
to develop. Capability subclass VIe irrigated, VIe nonir- Windbreaks and environmental plantings are fairly well rV
4,
rigated; Valent soil in Choppy Sand Meadow range site, suited to this soil. Blowing sand and low available water �'4'l'414
Lava in Sandy Meadow range site. capacity are the principal hazards in establishing trees
(72�-Vona loamy sand, 0 to 3 percent slopes. This is a and shrubs. The soil is so loose that trees should be vt?.
deep, somewhat excessively drained soil onplains and B *3,;
planted in shallow furrows and vegetation maintained „x'11'
high terraces at elevations of 4,600 to 5,200 feet. It between the rows. Supplemental irrigation is needed to ` ;
Formed in eollan or alluvial deposits. Included in mapping insure survival. Trees that are best suited and have good 49
are some leveled areas. Also included are small areas of survival are Rocky Mountain juniper, eastern redcedar, i
soils that have a loamy substratum and some areas of ponderosa pine, and Siberian elm. The shrubs best suited r
soils that are noncalcareous to a depth of 60 inches. are skunkbush sumac, lilac, and Siberian peashrub. r`
Typically the surface layer of this Vona soil is t°a4,
grayish Wildlife is an important secondary use of this soil. The ,"-
Drown. The upper 6 inches is loamy sand and the lower 6 cropland areas provide favorable habitat for ring-necked '-`4'"'
nchr'i fine sandy loam. The subsoil is brown and light pheasant and mourning dove. Many non game species can '
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2005-2971 '
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WELD COUNTY, COLORADO, SOUTHERN PART 47
be attracted by establishing areas for nesting and escape wheatgrass are suitable for seeding. The grass selected
over. For pheasants, undisturbed nesting cover is essen- should meet the seasonal requirements of livestock. It can
al and should be included in plans for habitat develop- be seeded into a clean, firm sorghum stubble, or it can be
ment, especially in areas of intensive agriculture. Range- drilled into a firm prepared seedbed. Seeding early in
land wildlife, for example, the pronghorn antelope, can be spring has proven most successful.
attracted by developing livestock watering facilities, Windbreaks and environmental plantings are fairly well
managing livestock grazing, and reseeding where needed. suited to this soil. Blowing sand and low available water
This soil has good potential for urban and recreational capacity are the principal hazards in establishing trees
development. Once established, the lawns, shrubs, and and shrubs. The soil is so loose that trees should be
trees grow well. The chief limiting soil feature is the planted in shallow furrows and vegetation maintained
rapid permeability in the substratum, which causes a between the rows. Supplemental irrigation may be needed
, hazard of ground water contamination from sewage to insure survival. Trees that are best suited and have
lagoons. In places recreational development is limited by good survival are Rocky Mountain juniper, western
the susceptibility to soil blowing. Capability subclass IIIe redcedar, ponderosa pine, and Siberian elm. The shrubs
2r ated, IVe nonirrigated; Sandy Plains range site. best suited are skunkbush sumac, lilac, and Siberian
(, 7 ;Nona loamy sand, 3 to 5 percent slopes. This is a Peashrub.
Wildlife is an important secondary use of this soil. The deep, somewhat excessively drained soil on plains and
high terraces at elevations of 4,600 to 5,200 feet. It cropland areas provide favorable habitat for ring-necked
formed in eolian or alluvial depheasant and mourning Included in mapping dove. Many nongame species can
are some leveled areas. Also included are small areas of be attracted by establishing areas for nesting and escape
`"' soils that have a loamy substratum and some areas of cover. For pheasants, undisturbed nesting cover is essen-
soils that are noncalcareous to a depth of 60 inches. tial and should be included in plans for habitat develop
ment, especially in areas of intensive agriculture. Range-
Typically the surface layer of this Vona soil is grayish
land wildlife, for example, the pronghorn antelope, can be brown. The upper 6 inches is loamy sand and the lower 5
inches is fine sandy loam. The subsoil is brown and light attracted by developing livestock watering facilities,
managing livestock grazing, and reseeding where needed.
yellowish brown fine sandy loam about 14 inches thick.
' The substratum to a depth of 60 inches is sandy loam. This soil has good potential for urban and recreational
development. Once established, the lawns, shrubs, and
Permeability is moderately rapid. Available water
trees grow well. The primary limiting soil feature is the
capacity is moderate. The effective rooting depth is 60
ches or more. Surface runoff is slow, and the erosion rapid permeability in the substratum, which causes a
azard is low. hazard of ground water contamination from sewage
lagoons. In places recreational development is limited by
This soil is suited to limited cropping. Intensive
The' the susceptibility to soil blowing. Capability subclass IVe
cropping is hazardous because of soil blowing.
cropping system should be limited to such close grown ""gated, VIe nonirrigated; Sandy Plains range site.
74
crops as alfalfa, wheat, and barley. The soil is also suited deep
Vona loamy sand, 5 to 9 percent slopes. This is a
to irrigated pasture. A suitable cropping system is 3 to 4 deep, somewhat excessively drained soil on plains at,
years of alfalfa followed by 2 years of corn and small elevations of 4,600 dinmappingto feet.s It armed in eolian
; grain and alfalfa seeded with a nurse crop. deposits. Included are small areas of soils that
Closely spaced contour ditches or sprinklers can be have aa loamy substratum and areas of soils that are non-
used in irrigating close calcareous to a depth of 60 inches.
g g grown crops. Contour furrows or Typically the surface layer is grayish brown. The upper
spinklers should be used for new crops. Application of 6 inches is loamy sand and the lower 4 inches is fine
barnyard manure and commercial fertilizer helps to main- sandy loam. The subsoil is brown and light yellowish
fain good production. brown fine sandy loam about 12 inches thick. The sub-
The potential native vegetation on this range site is stratum to a depth of 60 inches is loamy sand.
;! dominated by sand bluestem, sand reedgrass, and blue Permeability is moderately rapid. Available water
grama. Needleandthread, switchgrass, sideoats grama, capacity is moderate. The effective rooting depth is 60
and western wheatgrass are also prominent. Potential inches or more. Surface runoff is medium, and the erosion
1' production ranges from 2,200 pounds per acre in favors- hazard is low.
ble years to 1,800 pounds in unfavorable years. As range The potential native vegetation on this range site is
, condition deteriorates, the sand bluestem, sand reedgrass, dominated by sand bluestem, sand reedgrass, and blue
and switchgrass decrease and blue grama, sand dropseed, grama. Needleandthread, switchgrass, sideoats grama,
and sand sage increase. Annual weeds and grasses invade and western wheatgrass are also prominent. Potential
the site as range condition becomes poorer. production ranges from 2,20O pounds per acre in favora-
, Management of vegetation on this soil should be based ble years to 1,800 pounds in unfavorable years. As range
on taking half and leaving half of the total annual produc- condition deteriorates, the sand bluestem, sand reedgrass,
tion. Seeding is desirable if the range is in poor condition. and switchgrass decrease and blue grama, sand dropseed,
' Sand bluestem, sand reedgrass, switchgrass, sideoats and sand sage increase. Annual weeds and grasses invade
rams, blue grama, pubescent wheatgrass, and crested the site as range condition becomes poorer.
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