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EXHIBIT
2001-1652
50 SOIL SURVEY
sugar beets, small grain, or beans. Few conservation prac- The potential native vegetation is dominated by blue
tices are needed to maintain top yields. grama. Several mid grasses, such as western wheatgrass
All methods of irrigation are suitable, but furrow ir- and needleandthread, are also present. Potential produc-
rigation is the most common. Barnyard manure and corn- tion ranges from 1,600 pounds per acre in favorable years
mercial fertilizer are needed for top yields. to 1,000 pounds in unfavorable years. As range condition
Windbreaks and environmental plantings generally are deteriorates, the mid grasses decrease; blue grama, buf-
well suited to this soil. Summer fallow a year before falograss, snakeweed, yucca, and fringed sage increase;
planting and continued cultivation for weed control are and forage production drops. Undesirable weeds and an-
needed to insure establishment and survival of plantings. nuals invade the site as range condition becomes poorer.
Trees that are best suited and have good survival are Management of vegetation on this soil should be based
Rocky Mountain juniper, eastern redcedar, ponderosa on taking half and leaving half of the total annual produc-
pine, Siberian elm, Russian-olive, and hackberry. The tion. Seeding is desirable if the range is in poor condition.
shrubs best suited are skunkbush sumac, lilac, Siberian Sideoats grama, little bluestem, western wheatgrass, blue
peashrub, and American plum. grama, pubescent wheatgrass, and crested wheatgrass are
Openland wildlife, such as pheasant, mourning dove, suitable for seeding. The grass selected should meet the
and cottontail, are best suited to this soil. Wildlife habitat seasonal requirements of livestock. It can be seeded into
development, including tree and shrub plantings and a clean, firm sorghum stubble, or it can be drilled into a
grass plantings to serve as nesting areas, should be sue- firm prepared seedbed. Seeding early in spring has
cessful without irrigation in most years. Under irrigation, proven most successful.
good wildlife habitat can be established, benefiting many Windbreaks and environmental plantings are generally
kinds of openland wildlife. well suited to this soil. Summer fallow a year before
This soil has good potential for urban and recreational planting and continued cultivation for weed control are
development. The chief limiting soil features for urban needed to insure establishment and survival of plantings.
development are the shrink-swell potential of the subsoil Trees that are best suited and have good survival are
as it wets and dries and the limited capacity of the soil to Rocky Mountain juniper, eastern redcedar, ponderosa
support a load. Lawns, shrubs, and trees row well. Capa- pine, Siberian elm, Russian-olive, and hackberry. The
lass I irrigated. shrubs best suited are skunkbush sumac, lilac, Siberian
—._ 79 eld 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 corn- bility subclass IIe irrigated, IIIc nonirrigated; Loamy
monly grown in the area, including corn, sugar beets (fig. Plains range site.
8), beans, alfalfa, small grain, and onions. An example of a 80—Weld loam, 3 to 5 percent slopes. This is a deep,
suitable cropping system is 3 to 4 years of alfalfa fol- well drained soil on plains at elevations of 4,850 to 5,000
lowed by corn, corn for silage, sugar beets, small grain, or feet. It formed in eolian deposits. Included in mapping are
beans. Land leveling, ditch lining, and installing pipelines small areas of soils that have a subsoil of loam and light
are needed for proper water applications. clay loam.
All methods of irrigation are suitable, but furrow ir- Typically the surface layer is brown loam about 8
rigation is the most common. Barnyard manure and corn- inches thick. The subsoil is brown and pale brown heavy
mercial fertilizer are needed for top yields. clay loam and light clay about 18 inches thick. The sub-
This soil is well suited to winter wheat, barley, and stratum to a depth of 60 inches is silt loam.
sorghum if it is summer fallowed in alternate years. Permeability is slow. Available water capacity is high.
Winter wheat is the principal crop. The predicted average The effective rooting depth is 60 inches or more. Surface
yield is 33 bushels per acre. If the crop is winterkilled, runoff is medium, and the erosion hazard is moderate.
spring wheat can be seeded. Generally precipitation is too In irrigated areas this soil is suited to most of the crops
low for beneficial use of fertilizer. commonly grown in the area, such as corn, alfalfa, wheat,
Stubble mulch farming, striperopping, and minimum til- and barley. Sugar beets are often grown. The soil is
lage are needed to control soil blowing and water erosion. suited to irrigated pasture. Ditch lining and installing
Terracing also may be needed to control water erosion. pipelines are needed for proper water application.
14 SOIL SURVEY
ing corn, sugar beets, beans, alfalfa, small grain, The potential native vegetation is dominated by blue
potatotes, and onions. An example of a suitable cropping grama. Several mid grasses, such as western wheatgrass
system is 3 to 4 years of alfalfa followed by corn, corn for and needleandthread, are also present. Potential produc-
silage, sugar beets, small grain, or beans. Few conserva- tion ranges from 1,600 pounds per acre in favorable years
tion practices are needed to maintain top yields. to 1,000 pounds in unfavorable years. As range condition
All methods of irrigation are suitable, but furrow ir- deteriorates, the mid grasses decrease; blue grama, buf-
rigation is the most common. Barnyard manure and corn- falograss, snakeweed, yucca, and fringed sage increase;
mercial fertilizer are needed for top yields. and forage production drops. Undesirable weeds and an-
Windbreaks and environmental plantings of trees and nuals invade the site as range condition becomes poorer.
shrubs commonly grown in the area are generally well Management of vegetation on this soil should be based
suited to this soil. Cultivation to control competing on taking half and leaving half of the total annual produc-
vegetation should be continued for as many years as tion. Seeding is desirable if the range is in poor condition.
possible following planting. Trees that are best suited and Sideoats grama, little bluestem, western wheatgrass, blue
have good survival are Rocky Mountain juniper, eastern grama, pubescent wheatgrass, and crested wheatgrass are
redcedar, ponderosa pine, Siberian elm, Russian-olive, and suitable for seeding. The grass selected should meet the
hackberry. The shrubs best suited are skunkbush sumac, seasonal requirements of livestock. It can be seeded into
lilac, Siberian peashrub, and American plum. a clean, firm sorghum stubble or it can be drilled into a
Openland wildlife, such as pheasant, mourning dove, firm prepared seedbed. Seeding early in spring has
and cottontail, are best suited to this soil. Wildlife habitat proven most successful.
development, including tree and shrub plantings and Windbreaks and environmental plantings of trees and
grass plantings to serve as nesting areas, should be suc- shrubs commonly grown in the area are generally well
cessful without irrigation during most years. Under ir- suited to this soil. Cultivation to control competing
rigation, good wildlife habitat can be established, benefit- vegetation should be continued for as many years as
ing many kinds of openland wildlife. possible following planting. Trees that are best suited and
This soil has good potential for urban and recreational have good survival are Rocky Mountain juniper, eastern
redcedar, ponderosa pine, Siberian elm, Russian-olive, and
developments. Road design can be modified to compen-
sate for the limited capacity of this soil to support a load. hackberry. The shrubs best suited are skunkbush sumac,
Capability class I irrigated. lilac, Siberian peashrub, and American plum.
15—t,Iby loam, 1 to 3 percent slopes. This is a deep, Openland wildlife, such as pheasant, mourning dove,
we drained soil on uplands at elevations of 4,850 to 5,050 and cottontail, and rangeland wildlife, such as antelope,
cottontail, and coyote, are best suited to this soil. Under
feet. It formed in calcareous eolian deposits.
Typically the surface layer is pale brown loam about 12 irrigation, good wildlife habitat can be established,
inches thick. The underlying material is very pale brown benefiting many kinds of openland wildlife. Forage
Production is typically low on rangeland, and grazing
silt loam to a depth of 60 inches.
management is needed if livestock and wildlife share the
Permeability is moderate. Available water capacity is
range. Livestock watering facilities also are utilized by
high. The effective rooting depth is 60 inches or more.
Surface runoff is medium, and the erosion hazard is various wildlife species.
moderate. This soil has good potential for urban and recreational
development. Road design can be modified to compensate
In irrigated areas this soil is suited to all crops com-
for the limisud capacity of rhia soil to support a load.
monly grown in the area, including corn, sugar beets, Capability myl subclass IIe irrigated, IVe nonirrigated;
beans, alfalfa, small grain, potatoes, and onions. An exam-
le of a suitable cropping Loamy Plains range site.
P system is 3 to 4 years of alfalfa 16—Colby loam, 3 to 5 percent slopes. This is a deep,
followed by corn, corn for silage, sugar beets, small grain, well drained soil on upland hills and ridges at elevations
or beans. Land leveling, ditch lining, and installing of 4,850 to 5,050 feet. It formed in calcareous eolian
pipelines may be needed for proper water application. deposits. Included in mapping are small areas of soils that
All methods of irrigation are suitable, but furrow ir- have fine sandy loam or loam underlying material.
rigation is the most common. Barnyard manure and com- Typically the surface layer is pale brown loam about 10
mercial fertilizer are needed for top yields. inches thick. The underlying material is very pale brown
silt
In nonirrigated areas this soil is suited to winter wheat, y c loam to a depth of 60 inches.
barley, and sorghum. Most of the acreage is planted to Permeability is moderate. Available water capacity is
winter wheat. The predicted average yield is 28 bushels high. The effective rooting depth is 60 inches or more.
per acre. The soil is summer (allowed in alternate years Surface runoff is medium to rapid, and the erosion hazard
to allow moisture accumulation. Generally precipitation is is moderate.
too low for beneficial use of fertilizer. In irrigated areas this soil is suited to crops commonly
Stubble mulch farming, striperopping, and minimum til- grown in the area. Perennial grasses and alfalfa or close
lage are needed to control soil blowing and water erosion. grown crops should be grown at least 50 percent of the
Terracing may also be needed to control water erosion. time. Contour ditches and corrugations can be used in ir-
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