HomeMy WebLinkAbout952044.tiff rigating close grown crops and pasture. Furrows, contour
furrows, and cross slope furrows are suitable for row
crops. Sprinkler irrigation is also desirable. Keeping til-
lage to a minimum and utilizing crop residue help to con-
trol erosion. Maintaining fertility is important. Crops
respond to applications of phosphorus and nitrogen.
In nonirrigated areas this soil is suited to winter wheat.
\ The predicted average yield is 28 bushels per acre. The
soil is summer fallowed in alternate years to allow
moisture accumulation. Generally precipitation is too low
for beneficial use of fertiliser.
\ 71 Stubble mulch fanning, striperopping, and 'minimum til-
lage are needed to control soil blowing and water erosion.
\ Terracing also may be needed to control water erosion.
\ The potential native vegetation is dominated by blue
_438 grama. Several mid grasses, such as western wheatgrass
and needleandthread, are also present. Potential produc-
e Lion ranges from 1,600 pounds per acre in favorable years
Po to 1,000 pounds in unfavorable years. As range condition
deteriorates, the mid grasses decrease; blue grams, buf-
falograss, snakeweed, yucca, and fringed sage increase;
�38 `n
1 r� and forage production drops. Undesirable weeds and an-
1141nuals invade the site as range condition becomes poorer.
1 Management of vegetation on this soil should be based j,
— on taking half and leaving half of the total annual produc- i
y \ tion. Seeding is desirable if the range is in poor condition. il
Sideoats grama, little bluestem, western wheatgrass, blue .1
79 grama, pubescent wheatgrass, and crested wheatgrass are
suitable for seeding. The grass selected should meet the
seasonal requirements of livestock. It can be seeded into '
a clean, firm sorghum stubble, or it can be drilled into a
firm prepared seedbed. Seeding early in spring has
proven most successful.
Windbreaks and environmental plantings of trees and
shrubs commonly grown in the area are generally well
suited to this soil. Cultivation to control competing `
vegetation should be continued for as many years as
possible following planting. Trees that nre best suited and
Co( bi _ Fitie-s;it ,..axed (co.l car ens) / have good survival are Rocky Mountain juniper, eastern
W etic. Ur+ic Tsrrior}l.a„ts redcedar, ponderosa pine, Siberian elm, Russian-olive, and
hackberry. The shrubs best suited are skunkbush sumac,
lilac, Siberian peashrub, and American plum.
16—Colby loam, 3 to 5 percent slopes. This is a deep, Openland wildlife, such as pheasant, mourning dove,
well drained soil on upland hills and ridges at elevations and cottontail, and rangeland wildlife, such as antelope,
of 4,850 to 5,050 feet. It formed in calcareous eolian cottontail, and coyote, are best suited to this soil. Under
deposits. Included in mapping are small areas of soils that irrigation, good wildlife habitat can be established,
have fine sandy loam or loam underlying material benefiting many kinds of openland wildlife. Forage
Typically the surface layer is pale brown loam about 10 production is typically low on rangeland, and grazing
inches thick. The underlying material is very pale brown management is needed if livestock and wildlife share the
silt loam to a depth of 60 inches. range. Livestock watering facilities also are utilized by
Permeability is moderate. Available water capacity is various wildlife species.
high. The effective rooting depth is 60 inches or more. This soil has good potential for urban and recreational
Surface runoff is medium to rapid, and the erosion hazard developments. Road design can be modified to compen-
is moderate. sate for the limited capacity of this soil to support a load.
In irrigated areas this soil is suited to crops commonly Capability subclass IIIe irrigated, IVe nonirrigated;
grown in the area. Perennial grasses and alfalfa or close Loamy Plains range site.
grown crops should be grown at least 50 percent of the
time. Contour ditches and corrugations can be used in ir-
yb 2 C 4 4
-Typically the surface layer is light brownish gray fine
sandy loam about 8 inches thick. The underlying material
is light olive brown fine sandy loam. Soft sandstone is at
a depth of about 28 inches.
Permeability is moderately rapid. Available water
capacity is moderate. The effective rooting depth is 20 to
40 inches. Surface runoff is medium to rapid, and the ero-
sion hazard is moderate.
This soil is suited to limited cropping. Intensive
cropping is hazardous because of erosion. The cropping
system should be limited to such close grown crops as al-
falfa, wheat, and barley. This soil is also suited to ir-
-rigated pasture. A suitable cropping system is 3 to 4
years of alfalfa followed by 2 years of corn and small
_grain and alfalfa seeded with a nurse crop.
Close grown crops can be irrigated from closely spaced
contour ditches or sprinklers. Contour furrows or sprin-
klers should be used for new crops. Applications of
nitrogen and phosphorus help in maintaining good produc-
tion.
The potential native vegetation on this range site is
dominated by sand bluestem, sand reedgrass, and blue
grama. Needleandthread, switchgrass, sideoats grama,
and western wheatgrass are also prominent. Potential
_production ranges from 2,200 pounds per acre in favora-
ble years to 1,800 pounds in unfavorable years. As range
condition deteriorates, the sand bluestem, sand reedgrass,
and switchgrass decrease and blue grama, sand dropseed,
and sand sage increase. Annual weeds and grasses invade
the site as range condition becomes poorer.
Management of vegetation on this soil should be based
on taking half and leaving half of the total annual produc-
tion. Seeding is desirable if the range is in poor condition.
Sand bluestem, sand reedgrass, switchgrass, sideoats
grama, blue grama, pubescent wheatgrass, and crested
wheatgrass are suitable for seeding. The grass selected
should meet the seasonal requirements of livestock. It can
he seeded into a clean, firm sorghum stubble, or it can be
drilled into a firm prepared seedbed. Seeding early in
spring has proven most successful.
Windbreaks and environmental plantings are generally
not suited. Onsite investigation is needed to determine if
plantings are feasible.
Wildlife is an important secondary use of this soil. The
cropland areas provide wildlife habitat for ring-necked
pheasant and mourning dove. Many nongame species can
be attracted by establishing areas for nesting and escape
^/e Isay. - doQ,i sc- Joa, 7 ,, 7 •ci cover. For pheasants, undisturbed nesting cover is essen-
tial and should be included in plans for habitat develop-
(Calea.Yeeu4), nit t� US hc. Trriortit ant'I ment, especially in areas of intensive agriculture. Range-
land wildlife, for example, the pronghorn antelope, can be
attracted by developing livestock watering facilities,
38—Nelson fine sandy loam, 3 to 9 percent slopes. managing livestock grazing, and reseeding where needed.
The underlying sandstone is the most limiting feature
This a moderately deep, well drained sod in residuum on plaidum m of this soil. Neither septic tank absorption fields nor
elevations of 4,800 to 5,050 feet. It formed
derived from soft sandstone. Included in mapping are sewage lagoons operate properly. Site preparation for
dwellings is more costly. Environmental and beautifica-
m rll than of soils that have sandstone at a depth of tion plantings of trees and shrubs may be difficult to
more 40 inches.
establish. This soil, however, does have good potential for
such recreational development as camp and picnic areas
and playgrounds. Capability subclass -IVe irrigated, VIe
nonirrigated; Sandy Plains range site.
The potential native vegetation is dominated by blue
grama. Several mid grasses, such as western wheatgrass
and needleandthread, are also present. Potential produc-
tion ranges from 1,600 pounds per acre In favorable years
to 1,000 pounds in unfavorable years. As range condition
deteriorates, the mid grasses decrease; blue grams, huf-
falograss, snakeweed, yucca, and fringed sage increase;
and forage production drops. Undesirable weeds and an-
nuals invade the site as range condition becomes poorer.
Management of vegetation on this soil should be based
on taking half and leaving half of the total annual produc-
tion. Seeding is desirable if the range is in poor condition.
Rideoats grama, little bluestem, western wheatgrass, blue
gralal, Im beset,at wheatgrass, 811(1 crested w heatg rams are
suitable for seeding. The grass selected should meet the
seasonal requirements of livestock. It can be seeded into
a clean, firm sorghum stubble, or it can be drilled into a
firm prepared seedbed. Seeding early in spring has
proven most successful.
Windbreaks and environmental plantings are generally
well suited to this soil. Summer fallow a year before
planting and continued cultivation for weed control are
needed to insure establishment and survival of plantings.
(,)e(d F)„e.� µt,crii"rul.ar;//m,;Ira rx�-Si a Trees that are best suited and have good survival are
/t✓ d i c. Pa Iea..040//S Rocky Mountain juniper, eastern redcedar, ponderosa
pine, Siberian elm, Russian-olive, and hackberry. The
shrubs best suited are skunkbush sumac, lilac, Siberian
79—Weld loam, 1 to 3 percent slopes. This is a deep, peashrub, and American plum.
well drained soil on smooth plains at elevations of 4,850 to Openland wildlife, such as pheasant, mourning .dove,
5,000 feet. It formed in eolian deposits. Included in and cottontail, are best suited to this soil. Wildlife habitat
mapping are -small areas of soils that have a subsoil of development, including tree and shrub plantings and
loam and light clay loam. Also included are some leveled grass plantings to serve as nesting areas, should be suc-
areas. cessful without irrigation during most years. Under ir-
Typically the surface layer of this Weld soil is brown rigation, good wildlife habitat can be established, benefit-
loam about 8 inches thick. The subsoil is brown and pale ing many kinds of openland wildlife.
brown heavy clay loam and light clay about 20 inches This soil has good potential for urban and recreational
•
thick. The substratum to a depth of 60 inches is silt loam. development. The chief limiting soil features for urban
Permeability is slow. Available water capacity is high. development are the shrink-swell potential of the subsoil
The effective rooting depth is 60 inches or more. Surface as it wets and dries and the limited capacity of the soil to
runoff is slow, and the erosion hazard is low. support a load. Lawns, shrubs, and trees grow well. Capa-
In irrigated areas this soil is suited to all crops com- bility subclass Ile irrigated, IIIc nonirrigated; Loamy
monly grown in the area, including corn, sugar beets (fig. Plains range site.
B), beans, alfalfa, small grain, and onions. An example of a
-suitable cropping system is 3 to 4 years of alfalfa fol-
lowed by corn, corn for silage, sugar beets, small grain, or
beans. Land leveling, ditch lining, and installing pipelines
are needed for proper water applications.
All methods of irrigation are suitable, but furrow ir-
rigation is the most common. Barnyard manure and com-
mercial fertilizer are needed for top yields.
This soil is well suited to winter wheat, barley, and
sorghum if it is summer fallowed in alternate years.
Winter wheat is the principal crop. The predicted average
yield is 33 bushels per acre. If the crop is winterkilled,
spring wheat can be seeded. Generally precipitation is too
low for beneficial use of fertilizer.
Stubble mulch farming, striperopping, and minimum til-
lage are needed to control soil blowing and water erosion.
-Terracing also may be needed to control water erosion.
u
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' - R.67 W. R.66 W.
104°52'30" 1 3: 58 H. 0
This map is compiled on 197,aeral � �� - —'T �-
photography by the U.S. Department 5000 4001) 3000 2000 ] 000 0 Scale l26
of Agriculture.Soil Conservation Service
and cooperating agencies.
WELD COUNTY, CdLOR, . SC'_
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3,s - IVei . -F A-< so, ,L lac.+,. 3 -5 s 1/244-‘ p, z c
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U. S. DEPARTMENT OF AGRICULTURE
SOIL CONSERVATION SERVICE
x ieo ODD FEET
k.67 W.I R.66 W.
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