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;URVEY
WELD COUNTY, COLORADO,
Wildlife is an important secondary use of this soil. The only limiting features are the rapid permeability in the T
cr nd areas provide favorable habitat for ring-necked substratum and the resulting hazard of groundwater con- ]oar
pheasant and mourning dove. Many nongame species can tamination from sewage lagoons. Capability class I ir- ing
be attracted by establishing areas for nesting and escape ''' ' rigated. gra
cover. For pheasants, undisturbed nesting cover is essen- 12—Bresser sandy loam, 1 to 3 percent slopes. This is to
tial and should be included in plans for habitat develop- a deep, well drained soil on terraces at elevations of 4,700 gra
ment, especially in areas of intensive agriculture. Range- to 4,800 feet. It formed in alluvium deposited by the incl
land wildlife, for example, deer and antelope, can be at- South Platte River. Included in mapping are small areas I
tracted by managing livestock grazing and reseeding '; of soils that have sand and gravelly sand in the lower cap
where needed. 1 part of the substratum. incl
This soil is not suited to urban or recreational develop- Typically the surface layer is grayish brown sandy loam ero
ment because of the flood hazard. Capability subclass about 11 inches thick. The subsoil is brown and yellowish ']
IVw irrigated, VIw nonirrigated; Sandy Bottom land brown sandy clay loam about 18 inches thick. The sub- blu
range site. ', stratum to a depth of 60 inches is loamy sand. hai
11—Bresser sandy loam, 0 to 1 percent slopes. This is . Permeability and available water capacity are prc
a deep, well drained soil on terraces at elevations of 4,700 moderate. The effective rooting depth is 60 inches or ble
to 4,800 feet. It formed in alluvium deposited by the i more. Surface runoff is medium, and the erosion hazard is cor
South Platte River. Included in mapping are small areas '' low. blu
of soils that have sand and gravelly sand in the lower _ This soil is used almost entirely for irrigated crops. It tioi
part of the substratum. is suited to all crops commonly grown in the area, includ- 1
Typically the surface layer is grayish brown sandy loam ing corn, sugar beets, beans, alfalfa, small grain, potatoes, hal
about 11 inches thick. The subsoil is brown and yellowish and onions. An example of a suitable cropping system is 3 me
brown sandy clay loam about 19 inches thick. The sub- to 4 years of alfalfa followed by corn, corn for silage, a y
stratum to a depth of 60 inches is loamy sand. sugar beets, small grain, or beans. Land leveling, ditch ,
Permeability and available water capacity are lining, and installing pipelines may be needed for proper thi
moderate. The effective rooting depth is 60 inches or ,;- water application. col
more. Surface runoff is slow, and the erosion hazard is 't.:. All methods of irrigation are suitable, but furrow ir- shi
low. rigation is the most common. Barnyard manure and com- an
'o'-: mercial fertilizer are needed for top yields.
s soil is used almost entirely for irrigated crops. It m`
is ,ed to all crops commonly grown in the area includ- Windbreaks and environmental plantings are generally .
ing corn, sugar beets, beans, alfalfa, small suited to this soil. Soil blowing, the principal hazard in su'
g a, grain, potatoes, ni
and onions. An example of a suitable cropping system is 3 =� establishing trees and shrubs, can be controlled by cul- ,rfi
to 4 years of alfalfa followed by corn, corn for silage, tivating only in the tree row and by leaving a strip of
sugar beets, small grain, or beans. Few conservation prac- vegetation between the rows. Supplemental irrigation po
flees are needed to maintain top yields. may be needed at the time of planting and during dry
All methods of irrigation are suitable, but furrow ir- periods. Trees that are best suited and have good survival BE
rigation is the most common. Barnyard manure and com- are Rocky Mountain juniper, eastern redcedar, ponderosa a
mercial fertilizer are needed for top yields. pine, Siberian elm, Russian-olive, and hackberry. The
Windbreaks and environmental plantings are generally shrubs best suited are skunkbush sumac, lilac, and Siberi- in
an peashrub.
suited to this soil. Soil blowing, the principal hazard in Wildlife is an important secondary use of this soil. co
establishing trees and shrubs, can be controlled by cul- Ring-necked pheasant, mourning dove, and many non-
tivating ro
vegetation
only in the tree row and by leaving a strip of game species can be attracted by establishing areas for in
vegetation between the rows. Supplemental irrigation nesting and escape cover. For pheasants, undisturbed w'
may be needed at the time of planting and during dry nesting cover is essential and should be included in plans tic
periods. Trees that are best suited and have good survival
for habitat development, especially in areas of intensive ar
are Rocky Mountain juniper, eastern redcedar, ponderosa
pine, Siberian elm, Russian-olive, and hackberry. The agriculture. 131This soil has good potential for urban and recreational
shrubs best suited are skunkbush sumac, lilac, and Siberi- development. Lawns, shrubs, and trees grow well. The
an peashrub. i
only limiting features are the rapid permeability in the w^
Wildlife is an important secondary use of this soil ' substratum and the resulting hazard of ground water con- fe
Ring-necked pheasant, mourning dove, and many non-
to
game species can be attracted by establishing areas for gateon from sewage lagoons. Capability subclass Ile
in
irrigated.
nesting and escape cover. For pheasants, undisturbed 13—Cascajo gravelly sandy loam, 5 to 20 percent in
nesting cover is essential and should be included in plans slopes. This is a deep, excessively drained soil on terrace
for habitat development, especially in areas of intensive edges and upland ridges at elevations of 4,600 to 5,200 hi
agriculture. feet. It formed in very gravelly calcareous alluvium. In- Si
' • soil has good potential for urban and recreational eluded in mapping are small areas of soils that are shal-
de, _Jpment. Lawns, shrubs, and trees grow well. The low or moderately deep over sandstone and shale. is
i
WELD COUNTY, COLORADO, SOUTHERN PART 21
i, _
Most methods of irrigation are suitable, but furrow ir- grown crops should be grown at least 50 percent of the
rigation is the most common. Proper irrigation water time. Contour ditches and corrugations can be used in ir-
1
management is essential. Barnyard manure and commer- rigatirg close grown crops and pasture. Furrows, contour
cial fertilizer are needed for top yields. furrows, and cross slope furrows are suitable for row
{ In nonirrigated areas this soil is suited to winter wheat, crops. Keeping tillage to a minimum and utilizing crop
barley, and sorghum. Most of the acreage is planted to residue help to control erosion. Maintaining fertility is im-
Iwinter wheat. The predicted average yield is 25 bushels portant. Crops respond to applications of phosphorus and
I per acre. The soil is summer fallowed in alternate years nitrogen.
s to allow moisture accumulation. Generally precipitation is In nonirrigated areas this soil is suited to winter wheat,
too low for beneficial use of fertilizer. barley, and sorghum. Most of the acreage is planted to
!; Stubble mulch farming, striperopping, and minimum til- winter wheat. The predicted average yield is 20 bushels
{I lage are needed to control soil blowing and water erosion. per acre. The soil is summer fallowed in alternate years
The potential native vegetation is dominated by to allow moisture accumulation. Generally precipitation is
western wheatgrass and blue grama. Buffalograss is also too low for beneficial use of fertilizer.
4 present. Potential production ranges from 1,000 pounds in Stubble mulch farming, striperopping, and mimimum
favorable years to 600 pounds in unfavorable years. As tillage are needed to control soil blowing and water ero-
range condition deteriorates, a blue grama-buffalograss sion. Terracing also may be needed to control water ero-
sod forms. Undesirable weeds and annuals invade the site sion.
Ias range condition becomes poorer. The potential native vegetation is dominated by
Management of vegetation on this soil should be based western wheatgrass and blue grama. Buffalograss is also
on taking half and leaving half of the total annual produc- present. Potential production ranges from 1,000 pounds
tion. Range pitting can help in reducing runoff. Seeding is per acre in favorable years to 600 pounds in unfavorable
desirable if the range is in poor condition. Western years. As range condition deteriorates, a blue grama-buf-
wheatgrass, blue grama, sideoats grams, buffalograss, pu- falograss sod forms. Undesirable weeds and annuals in-
bescent wheatgrass, and crested wheatgrass are suitable vade the site as range condition becomes poorer.
for seeding. The grass selected should meet the seasonal Management of vegetation on this soil should be based
requirements of livestock. It can be seeded into a clean, on taking half and leaving half of the total annual produc-
firm sorghum stubble, or it can be drilled into a firm tion. Range pitting can help in reducing runoff. Seeding is
j prepared seedbed. Seeding early in spring has proven desirable if the range is in poor condition. Western
most successful. wheatgrass, blue grama, sideoats grama, buffalograss, pu-
Windbreaks and environmental plantings are generally bescent wheatgrass, and crested wheatgrass are suitable
d not suited to this soil. Onsite investigation is needed to for seeding. The grass selected should meet the seasonal
i determine if plantings are feasible. Successful windbreaks requirements of livestock. It can be seeded into a clean,
require supplemental water. firm sorghum stubble, or it can be drilled into a firm
Openland wildlife, such as pheasant, mourning dove, prepared seedbed. Seeding early in spring has proven
and cottontail, are best suited to this soil. Supplemental most successful.
f water is needed in wildlife habitat development, including Windbreaks and environmental plantings generally are
1 the tree and shrub plantings that serve as nesting areas. not suited to this soil. Onsite investigation is needed to
This soil has poor potential for urban and recreational determine if plantings are feasible. Successful windbreaks
development. Slow permeability and high shrink swell require supplemental water.
create problems in dwelling and road construction. Capa- Openland wildlife, such as pheasant, mourning dove,
bility subclass Its irrigated, IVe nonirrigated; Clayey and cottontail, are best suited to this soil. Supplemental
Plains range site. water is needed for wildlife habitat development, includ-
28—Heldt silty clay, 3 to 5 percent slopes. This is a ing tree and shrub plantings that serve as nesting areas.
deep, moderately well drained soil on plains at elevations This soil has poor potential for urban and recreational
of 4,950 to 5,050 feet. It formed in alluvial sediment development. Slow permeabiity and high shrink swell
F$ derived from shale. Included in mapping are small areas create problems in dwelling and road construction. Capa-
9 of soils that have a clay loam or silt loam subsoil and sub- bility subclass IIIe irrigated, IVe nonirrigated; Clayey
stratum. Plains range site.
Typically the surface layer is light brownish gray and 29—Julesburg sandy loam, 0 to 1 percent slopes. This
light yellowish brown silty clay about 7 inches thick. The is a deep, well drained soil on terraces at elevations of
f subsoil is light brownish gray silty clay about 21 inches 4,700 to 4,800 feet. It formed in alluvium deposited by the
thick. The substratum to a depth of 60 inches is silty clay. South Platte River. Included in mapping are some leveled
Permeability is slow. Available water capacity is high. areas and small areas of soils that have a loamy sub-
The effective rooting depth is 60 inches or more. Surface stratum.
runoff is medium, and the erosion hazard is moderate. Typically the surface layer of this Julesburg soil is
In irrigated areas this soil is suited to crops commonly brown sandy loam about 12 inches thick. The subsoil is
grown in the area. Perennial grasses and alfalfa or close brown and pale brown sandy loam about 18 inches thick.
I
22 SOIL SURVEY
The substratum to a depth of 60 inches is loamy sand and This soil is used almost entirely for irrigated crops. It
sand. is suited to all crops commonly grown in the area, includ-
Permeability is rapid. Available water capacity is ing corn, sugar beets, beans, alfalfa, small P rain, potatoes,
moderate. The effective rooting depth is 60 inches or and onions. An example of a suitable cropping system is 3
more. Surface runoff is slow, and the erosion hazard is to 4 years of alfalfa followed by corn, corn for silage,
low sugar beets, small grain, or beans. Land leveling, ditch
This soil is used almost entirely for irrigated crops. It lining, and installing pipelines may be needed for proper
is suited to all crops commmonly grown in the area, in- water application.
eluding corn, sugar beets, beans, alfalfa, small grain, All methods of irrigation are suitable, but furrow ir-
potatoes, and onions. An example of a suitable cropping rigation is the most common. Barnyard manure and corn-
system is 3 to 4 years of alfalfa followed by corn, corn for mercial fertilizer are needed for top yields.
silage, sugar beets, small grain, or beans. Generally, such Windbreaks and environmental plantings are generally
characteristics as the rapidly permeable substratum suited to this soil. Soil blowing, the principal hazard in
slightly restrict some crops. establishing trees and shrubs, can be controlled by cul-
All methods of irrigation are suitable, but furrow ir- tivating only in the tree row and by leaving a strip of
vegetation between the rows. Supplemental irrigation
rigation anae is the most common. Proper irrigation water may be needed at the time of planting and during dry
management is essential. Barnyard manure and commer-
cial periods. Trees that are best suited and have good survival
fertilizer are needed for top yields. are Rocky Mountain juniper, eastern redcedar, ponderosa
Windbreaks and environmental plantings are generally pine, Siberian elm, Russian-olive, and hackberry. The
suited to this soil. Soil blowing, the principal hazard in shrubs best suited are skunkbush sumac, lilac, and Siberi-
establishing trees and shrubs, can be controlled by cul- an peashrub.
tivating only in the tree row and by leaving a strip of Wildlife is an important secondary use of this soil. The
vegetation between the rows. Supplemental irrigation cropland areas provide favorable habitat for ring-necked
may by needed at the time of planting and during dry pheasant and mourning dove. Many nongame species can
periods. Trees that are best suited and have good survival be attracted by establishing areas for nesting and escape
are Rocky Mountain juniper, eastern redcedar, ponderosa cover. For pheasants, undisturbed nesting cover is essen-
pine, Siberian elm, Russian-olive, and hackberry. The tial and should be included in plans for habitat develop-
shrubs best suited are skunkbush sumac, lilac, and Siberi- ment, especially in areas of intensive agriculture.
an peashrub. This soil has good potential for urban and recreational
Wildlife is an important secondary use of this soil. The development. Lawns, shrubs, and trees grow well. The
cropland areas provide favorable habitat for ring-necked only limiting feature of this soil is the rapid permeability
pheasant and mourning dove. Many nongame species can in the substratum, which causes a hazard of ground water
be attracted by establishing areas for nesting and escape contamination from sewage lagoons. Capability subclass
cover. For pheasants, undisturbed nesting cover is essen- Ile irrigated.
tial and should be included in plans for habitat develop- 31—Kim loam, 0 to 1 percent slopes. This is a deep,
ment, especially in areas of intensive agriculture. well drained soil on smooth plains and alluvial fans at
This soil has good potential for urban and recreational elevations of 4,900 to 5,250 feet. It formed in mixed eolian
development. Lawns, shrubs, and trees grow well. The deposits and parent sediment from a wide variety of
only limiting feature of this soil is the rapid permeability bedrock. Included in mapping are small areas of soils that
in the substratum, which causes a hazard of ground water have loamy sand underlying material.
contamination from sewage lagoons. Capability subclass Typically the surface layer is brown and pale brown
IIs irrigated. about 12 inches thick. The upper 30 inches of the underly-
30—Julesburg sandy loam, 1 to 3 percent slopes. This ing material is pale brown loam. The lower part to a
is a deep, well drained soil on terraces at elevations of depth of 60 inches is pale brown fine sandy loam.
4,700 to 4,800 feet. It formed in alluvium deposited by the Permeability is moderate. Available water capacity is
South Platte River. Included in mapping are some leveled high. The effective rooting depth is 60 inches or more.
areas and small areas of soils that have a loamy sub- Surface runoff is slow, and the erosion hazard is low.
stratum. This soil is used almost entirely for irrigated crops. It
Typically the surface layer of this Julesburg soil is is suited to all crops commonly grown in the area, includ-
brown sandy loam about 12 inches thick. The subsoil is ing corn, sugar beets, beans, alfalfa, small grain, potatoes,
brown and pale brown sandy loam about 15 inches thick. and onions. An example of a suitable cropping system is 3
The substratum to a depth of 60 inches is loamy sand and to 4 years of alfalfa followed by corn, corn for silage,
sand. sugar beets, small grain, or beans. Very few conservation
Permeability is rapid. Available water capacity is practices are needed to maintain top yields.
moderate. The effective rooting depth is 60 inches or All methods of irrigation are suitable, but furrow ir-
more. Surface runoff is slow, and the erosion hazard is rigation is the most common. Barnyard manure and com-
low mercial fertilizer are needed for top yields.
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