HomeMy WebLinkAbout991246.tiff 28 SOIL SURVEY
40—Nunn loam, 1 to 3 percent slopes. This is a deep, vegetation should be continued for as many years as
well drained soil on terraces at elevations of 4,550 to 5,000 possible following planting. Trees that are best suited and
feet. It formed in mixed alluvium. Included in mapping have good survival are Rocky Mountain juniper, eastern
are small, long and narrow areas of sand and gravel redcedar, ponderosa pine, Siberian elm, Russian-olive, and
deposits and small areas of soils that are subject to occa- hackberry. The shrubs best suited are skunkbush sumac,
sional flooding. Some leveled areas are also included. lilac, Siberian peashrub, and American plum.
Typically the surface layer of this Nunn soil is grayish Wildlife is an important secondary use of this soil. The
brown loam about 12 inches thick. The subsoil is light cropland areas provide favorable habitat for ring-necked
brownish gray clay loam about 12 inches thick. The upper pheasant and mourning dove. Many nongame species can
part of the substratum is light brownish gray clay loam. be attracted by establishing areas for nesting and escape
The lower part to a depth of 60 inches is brown sandy cover. For pheasants, undisturbed nesting cover is essen-
loam tial and should be included in plans for habitat develop-
Permeability is moderately slow. Available water ment, especially in areas of intensive agriculture. Range-
capacity is high. The effective rooting depth is 60 inches land wildlife, for example, the pronghorn antelope, can be
or more. Surface runoff is medium, and the erosion attracted by developing livestock watering facilities,
hazard is low. managing livestock grazing, and reseeding where needed.
In irrigated areas this soil is suited to all crops com- This soil has fair to poor potential for urban develop-
monly grown in the area, including corn, sugar beets, ment. It has moderate to high shrink swell, low strength,
beans, alfalfa, small grain, potatoes, and onions. An exam- and moderately slow permeability. These features create
ple of a suitable cropping system is 3 to 4 years of alfalfa problems in dwelling and road construction. Those areas
followed by corn, corn for silage, sugar beets, small grain, that have loam or sandy loam in the lower part of the
or beans. Generally such characteristics as a high clay substratum are suitable for septic tank absorption fields
content or a rapidly permeable substratum slightly and foundations. Some areas of this soil are adjacent to
restrict some crops. streams and are subject to occasional flooding. The poten-
All methods of irrigation are suitable, but furrow ir- tial is fair for such recreational
ecre tiona Capabilipment ty su as camp
Ipa ir-
management rigation is the most common. Proper irrigation water picnic areas and playgro
unds.management is essential. Barnyard manure and commer- rigated, Inc nonirrigated; Loamy Plains range site.
cial fertilizer are needed for top yields. 41—Nunn clay loam, 0 to 1 percent slopes. This is a
Most nonirrigated areas are used for small grain. The deep, well drained soil on terraces and smooth plains at
soil is summer fallowed in alternate years. Winter wheat elevations of 4,550 to 5,160 feet.. It formed in mixed allu-
is the principal crop. If the crop is winterkilled, spring vium and eolian deposits. Included in mapping are small,
wheat can be seeded. Generally precipitation is too low long and narrow areas of sand and gravel deposits and
for beneficial use of fertilizer. small areas of soils that are subject to occasional flooding.
Such practices as stubble mulch farming, striperopping, Some may the leveled
su areas
ee layer are also
included.
this n soil is grayish
andwae minimum age are needed to control soil blowing Typicabrown clay loam about 9 inches thick. The subsoil is light
and water erosion.native potential native vegetation is dominated by blue brownish gray clay loam about 14 inches thick. The upper
grama. Several raid grasses, such as western wheatgrass part of the substratum is clay loam. The lower part to a
and needleandthread, are also present. Potential produc- depth of 60 inches is sandy loam.
tion ranges from 1,600 pounds per acre in favorable years Permeability is moderately slow. Available water
to 1,000 pounds in unfavorable years. As range condition
Lioncapacity
hig . The
eoeffects ive
and the erosion ting depth is 60
inches
is
deteriorates, the mid grasses decrease; blue grama, or more. Surface
falograss, snakeweed, yucca, and fringed sage increase; low.
and forage production drops. Undesirable weeds and an- This soil is used almost entirely for irrigated crops. It
nuals invade the site as range condition becomes poorer. is suited to all crops commonly grown in the area, inclu
Management of vegetation on this soil should be based ing corn, sugar beets, beans, alfalfa, small grain, potatoes
on taking half and leaving half of the total annual produc- and onions. An example of a suitable cropping system is £
tion. Seeding is desirable if the range is in poor condition. to 4 years of alfalfa followed by corn, corn for silage
Sideoats grama, little bluestem, western wheatgrass, blue sugar beets, small grain, or beans. Few conservation prac
grama, pubescent wheatgrass, and crested wheatgrass are tices are needed to maintain top yields.
suitable for seeding. The grass selected should meet the All methods of irrigation are suitable, but furrow ir
seasonal requirements of livestock. It can be seeded into rigation is the most common. Barnyard manure and corn
a clean, firm sorghum stubble, or it can be drilled into a mercial fertilizer are needed for top yields.
firm prepared seedbed. Seeding early in spring has Windbreaks
breaksand
commonly grown n the
environmental
nt area ntings gef tees we
,
proven most successful.
shrubs
Windbreaks and environmental plantings of trees and suited to this soil. Cultivation to control competin
shrubs commonly grown in the area are generally well vegetation should be a f Trees continued that are best suited ears a2
suited to this soil. Cultivation to control competing possible following planting.
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n
• EXHIBIT
991246 4'
WEB.) COUNTY, COLORADO, SOUTHERN PART 35
switchgrass decrease and blue grama, sand dropseed, should be grown at least 50 percent of the time. Contour
sand sage increase. Annual weeds and grasses invade ditches and corrugations can be used in irrigating close
;ite as range condition becomes poorer. grown crops and pasture. Furrows, contour furrows, and
tnagement of vegetation on this soil should be based cross slope furrows are suitable for row crops. Sprinkler
,,n taking half and leaving half of the total annual produc- irrigation is also desirable. Keeping tillage to a minimum
tion. Seeding is desirable if the range is in poor condition. and utilizing crop residue help to control erosion. Main-
<and bluestem, sand reedgrass, switchgrass, sideoats taming fertility is important. Crops respond to applica-
`,rama blue grama, pubescent wheatgrass, and crested tions of phosphorus and nitrogen.
.vheatgrass are suitable for seeding. The grass selected The potential native vegetation on this site is
should meet the seasonal requirements of livestock. It can dominated by sand bluestem, sand reedgrass, and blue
be seeded into a clean, firm stubble, or it can be drilled grama. Needleandthread, switchgrass, sideoats grama,
into a firm prepared seedbed. Seeding early in spring has and western wheatgrass are also prominent. Potential
proven most successful. production ranges from 2,200 pounds per acre in favora-
Windbreaks and environmental plantings are generally ble years to 1,800 pounds in unfavorable years. As range
suited to this soil. Soil blowing, the principal hazard in condition deteriorates, the sand bluestem, sand reedgrass,
,establishing trees and shrubs, can be controlled by cul- and switchgrass decrease, and blue grama, sand dropseed,
tivating only in the tree row and by leaving a strip of and sand sage increase. Annual weeds and grasses invade
vegetation between the rows. Supplemental irrigation the site as range condition becomes poorer.
may be needed at the time of planting and during dry Management of vegetation on this soil should be based
periods. Trees that are best suited and have good survival on taking half and leaving half of the total annual produc-
are Rocky Mountain juniper, eastern redcedar, ponderosa tion. Seeding is desirable if the range is in poor condition.
pine, Siberian elm, Russian-olive, and hackberry. The Sand bluestem, sand reedgrass, switchgrass, sideoats
shrubs best suited are skunkbush sumac, lilac, and Siberi- grama, blue grama, pubescent wheatgrass, and crested
an peashrub. wheatgrass are suitable for seeding. The grass selected
Wildlife is an important secondary use of this soil. should meet the seasonal requirements of livestock. It can
Ring-necked pheasant, mourning dove, and many non- be seeded into a clean, firm sorghum stubble, or it can be
game species can be attracted by establishing areas for drilled into a firm prepared seedbed. Seeding early in
nesting and escape cover. For pheasants, undisturbed spring has proven most successful.
sting cover is essential and should be included in plans Windbreaks and environmental plantings are generally
habitat development, especially in areas of intensive suited to this soil. Soil blowing, the principal hazard in
culture. establishing trees and shrubs, can be controlled by cul-
.Capid expansion of Greeley and the surrounding area tivating only in the tree row and by leaving a strip of
has resulted in urbanization of much of this Otero soil. vegetation between the rows. Supplemental irrigation
This soil has excellent potential for urban and recrea- may be needed at the time of planting and during dry
tional development. The only limiting feature is the periods. Trees that are best suited and have good survival
moderately rapid permeability in the substratum, which are Rocky Mountain juniper, eastern redcedar, ponderosa
causes a hazard of ground water contamination from pine, Siberian elm, Russian-olive, and hackberry. The
sewage lagoons. Lawns, shrubs, and trees grow well. shrubs best suited are skunkbush sumac, lilac, and Siberi-
Capability subclass Hie irrigated, IVe nonirrigated; an peashrub.
Sandy Plains range site. Wildlife is an important secondary use of this soil.
52—Otero sandy loam, 3 to 5 percent slopes. This is a Ring-necked pheasant, mourning dove, and many non-
deep, well drained soil on plains at elevations of 4,700 to game species can be attracted by establishing areas for
5,250 feet. It formed in mixed outwash and eolian nesting and escape cover. For pheasants, undisturbed
deposits. Included in mapping are small areas of soils that nesting cover is essential and should be included in plans
have loam and clay loam underlying material. Also in- for habitat development, especially in areas of intensive
eluded are small areas of soils that have sandstone and agriculture.
shale within a depth of 60 inches. Rapid expansion of Greeley and the surrounding area
Typically the surface layer of this Otero soil is brown has resulted in urbanization of much of this Otero soil.
sandy loam about 10 inches thick. The underlying material The soil has excellent potential for urban and recreational
to a depth of 60 inches is pale brown calcareous fine development. The only limiting feature is the moderately
sandy loam. rapid permeability in the substratum, which causes a
Permeability is rapid. Available water capacity is hazard of ground water contamination from sewage
moderate. The effective rooting depth is 60 inches or lagoons. Lawns, shrubs, and trees grow well. Capability
more. Surface runoff is medium, and the erosion hazard is subclass IIIe irrigated, VIe nonirrigated; Sandy Plains
low range site.
This soil is used almost entirely for irrigated crops. It 53—Otero sandy loam, 5 to 9 percent slopes. This is a
suited to the crops commonly grown in the area. deep, well drained soil on plains at elevations of 4,700 to
?nnial grasses and alfalfa or close growing crops 5,250 feet. It formed in mixed outwash and eolian
32 SOIL SURVEY
are Rocky Mountain juniper, eastern redcedar, ponderosa ble years to 1,800 pounds in unfavorable years. As rang:
pine, Siberian elm, Russian-olive, and hackberry. The condition deteriorates, the sand bluestem, sand reedgrass
shrubs best suited are skunkbush sumac, lilac, and Siberi- and and sand sages decrease and rease andablue e grama,and grasses i sand nvad
an peashrub.
Wildlife is an important secondary use of this soil. The the site as range condition becomes poorer.
cropland areas provide favorable habitat for ring-necked Management of vegetation on this soil should be base
pheasant and mourning dove. Many nongame species can on taking half and leaving half of the total annual produw
be attracted by establishing areas for nesting and escape tion. Seeding is desirable if the range is in poor conditioi
cover. For pheasants, undisturbed nesting cover is essen- Sand bluestem, sand reedgrass, switchgrass, sideoat
tial and should be included in plans for habitat develop- grama, blue grama, and pubescent wheatgrass are suit
ment, especially in areas of intensive agriculture. ble for seeding. The grass selected should meet th
Rapid expansion of Greeley and the surrounding area seasonal requirements of livestock. It can be seeded int
has resulted in urbanization of much of this Olney soil. a clean, firm sorghum stubble, or it can be drilled into
This soil has good potential for urban and recreational firm prepared seedbed. Seeding early in spring h:
development. The only limiting feature is the moderately proven most successful.
rapid permeability in the substratum, which causes a Windbreaks and environmental plantings are general'
hazard of ground water contamination from sewage suited to this soil. Soil blowing, the principal hazard
lagoons. Lawns, shrubs, and trees grow well. Capability ea ng only in the tree and by
establishing
es and
shrubs,
controlled
strip u
class I irrigated.
47—Olney fine sandy loam, 1 to 3 percent slopes. vegetation between the rows. Supplemental irrigatic
This is a deep, well drained soil on plains at elevations of may be needed at the time of planting and during di
4,600 to 5,200 feet. It formed in mixed outwash deposits. periods. Trees that are best suited and have good surviv
Included in mapping are small areas of soils that have a are Rocky Mountain juniper, eastern redcedar, pondero
dark surface layer. Some small leveled areas are also in- shrubs best suited arrian elm, e skunkbush sumac, lilac, and Sibe,
ve, and hackberry. Ti
eluded.
Typically the surface layer of this Olney soil is grayish an peashrub.
brown fine sandy loam about 10 inches thick. The subsoil Wildlife is an important secondary use of this soil. T
is yellowish brown and very pale brown sandy clay loam cropland areas provide favorable habitat for ring-neck
about 14 inches thick. The substratum to a depth of 60 pheasant and mourning dove. Many nongame species c
inches is very pale brown, calcareous fine sandy loam. be attracted by establishing areas for nesting and esca
Permeability and available water capacity are cover. For pheasants, undisturbed nesting cover is essc
moderate. The effective rooting depth is 60 inches or tial and should be included in plans for habitat devek
more. Surface runoff is medium, and the erosion hazard is ment,
in
wildlife, for example, R
the pronghorn antelope,low. and
In irrigated areas this soil is suited to all crops com- attracted by developing livestock watering faciliti
monly grown in the area, including corn, sugar beets, managing livestock grazing, and reseeding where neede
beans, alfalfa, small grain, potatoes, and onions. An exam- Rapid expansion of Greeley and the surrounding ai
ple of a suitable cropping system is 3 to 4 years of alfalfa has resulted in urbanization of much of the Olney s
followed by corn, corn for silage, sugar beets, small grain, This soil has good potential for urban and recreatio
or beans. Land leveling, ditch lining, and installing development. The only limiting feature is the moderat
pipelines may be needed for proper water application. All rapid permeability in the substratum, which cause:
methods of irrigation are suitable, but furrow irrigation is hazard of ground water contaminatio`onwfrom Csew:
the most common. Barnyard manure and commercial fer- lagoons.
s Ile Lawns,
ir shrubs,
and
IVe trees
n e s g ted; Sady Capabi
tilizer are needed for top yields.
In nonirrigated areas this soil is suited to winter wheat, range site.
barley, and sorghum. Most of the acreage is planted to 48—Olney fine sandy loam, 3 to 5 percent slot
winter wheat. The predicted average yield is 28 bushels This is a deep, well drained soil on plains at elevation:
per acre. The soil is summer fallowed in alternate years 4,600 to 5,200 feet. It formed in mixed outwash depot
to allow moisture accumulation. Generally precipitation is Included in ded ince layer an
d e small areas small areas of soils
it soils that h
too low for beneficial use of fertilizer. dark
Stubble mulch farming, striperopping, and minimum til- sandstone and shale within a depth of 60 inches.
lage are needed to control soil blowing and water erosion. Typically the surface layer of this Olney soil is gra.
Terracing also may be needed to control water erosion. brown fine sandy clay loam about 8 inches thick. The :
The potential native vegetation on this range site is soil is yellowish brown and very pale brown fine sa
dominated by sand bluestem, sand reedgrass, and blue loam about 12 inches thick. The substratum to a dept
grama. Needleandthread, switchgrass, sideoats grama, 60 inches is very pale brown, calcareous fine sandy loa
and western wheatgrass are also prominent. Potential Permeability and available water capacity
production ranges from 2,200 pounds per acre in favora- moderate. The effective rooting depth is 60 inches
34 SOIL SURVEY
or drilled into a firm, clean sorghum stubble. Seeding tivating only in the tree row and by leaving a strip of
early in spring has proven most successful. Brush vegetation between the rows. Supplemental irrigation
management can also help to improve deteriorated range. may be needed at the time of planting and during dry
Windbreaks and environmental plantings are fairly well periods. Trees that are best suited and have good survival
suited to this soil. Blowing sand and low available water are Rocky Mountain juniper, eastern redcedar, ponderosa
capacity are the principal hazards in establishing trees pine, Siberian elm, Russian-olive, and hackberry. The
and shrubs. This soil is so loose that trees should be shrubs best suited are skunkbush sumac, lilac, and Siberi-
planted in shallow furrows, and vegetation is needed an peashrub.
between the rows. Supplemental irrigation may be needed Wildlife is an important secondary use of this soil.
to insure survival. Trees that are best suited and have Ring-necked pheasant, mourning dove, and many non-
good survival are Rocky Mountain juniper, eastern game species can be attracted by establishing areas for
redcedar, ponderosa pine, and Siberian elm. The shrubs nesting and escape cover. For pheasants, undisturbed
best suited are skunkbush sumac, lilac, and Siberian nesting cover is essential and should be included in plans
peashrub. for habitat development, especially in areas of intensive
Wildlife is an important secondary use of this soil. The agriculture.
cropland areas provide favorable habitat for ring-necked Rapid expansion of Greeley and the surrounding area
pheasant and mourning dove. Many nongame species can has resulted in urbanization of much of this Otero soil.
be attracted by establishing areas for nesting and escape This soil has excellent potential for urban and recrea-
cover. For pheasants, undisturbed nesting cover is essen- tional development. The only limiting feature is the
tial and should be included in plans for habitat develop- moderately rapid permeability in the substratum, which
ment, especially in areas of intensive agriculture. Range- causes a hazard of ground water contamination from
land wildlife, for example, the pronghorn antelope, can be sewage lagoons. Lawns, shrubs, and trees grow welL
attracted by developing livestock watering facilities, Capability subclass Its irrigated.
managing livestock grazing, and reseeding where needed. 51—Otero sandy loam, 1 to 3 percent slopes. This is a
Few areas of this soil are in major growth and ur- deep, well drained soil on plains at elevations of 4,700 to
banized centers. The chief limiting feature is the rapid 5,250 feet. It formed in mixed outwash and eolian
permeability in the substratum, whien causes a hazard of deposits. Included in mapping are small areas of soils that
ground water contamination from seepage. Potential for have loam and clay loam underlying material.
recreation is poor because of the sandy surface layer. Typically the surface layer is brown sandy loam about
Capability subclass IVe irrigated, VIe nonirrigated; Deep 12 inches thick. The underlying material to a depth of 60
Sand range site. inches is pale brown calcareous fine sandy loam.
50—Otero sandy loam, 0 to 1 percent slopes. This is a Permeability is rapid. Available water capacity is
deep, well drained soil on smooth plains at elevations of moderate. The effective rooting depth is 60 inches or
4,700 to 5,250 feet. It formed in mixed outwash and eolian more. Surface runoff is slow, and the erosion hazard is
deposits. Included in mapping are small areas of soils that low.
have loam and clay loam underlying material. This soil is used almost entirely for irrigated crops. It
Typically the surface layer is brown sandy loam about is suited to all crops commonly grown in the area. Land
12 inches thick. The underlying material to a depth of 60 leveling, ditch lining, and installing pipelines may be
inches is pale brown calcareous fine sandy loam. needed for proper water application.
Permeability is rapid. Available water capacity is All methods of irrigation are suitable, but furrow ir-
moderate. The effective rooting depth is 60 inches or ligation is the most common. Barnyard manure and corn-
more. Surface runoff is slow, and the erosion hazard is mercial fertilizer are needed for top yields.
low. In nonirrigated areas this soil is suited to winter wheat,
This soil is used almost entirely for irrigated crops. It barley, and sorghum. Most of the acreage is planted to
is suited to all crops commonly grown in the area, includ- winter wheat. The predicted average yield is 28 bushels
ing corn, sugar beets, beans, alfalfa, small grain, potatoes, per acre. The soil is summer fallowed in alternate years
and onions. An example of a suitable cropping system is 3 to allow moisture accumulation. Generally precipitaiton is
to 4 years of alfalfa followed by corn, corn for silage, too low for beneficial use of fertilizer.
sugar beets, small grain, or beans. Generally, such charac- Stubble mulch fanning, striperopping, and minimum til-
teristics as a high clay content or a rapidly permeable lage are needed to control water erosion. Terracing also
substratum slightly restrict some crops. may be needed to control water erosion.
All methods of irrigation are suitable, but furrow ir- The potential native vegetation on this range site is
rigation is the most common. Proper irrigation water dominated by sand bluestem, sand reedgrass, and blue
management is essential. Barnyard manure and commer- grams. Needleandthread, switchgrass, sideoats grams,
cial fertilizer are needed for top yields. and western wheatgrass are also prominent. Potential
Windbreaks and environmental plantings are generally production ranges from 2,200 pounds per acre in favors-
suited to this soil. Soil blowing, the principal hazard in ble years to 1,800 pounds in unfavorable years. As range
establishing trees and shrubs, can be controlled by cul- condition deteriorates, the sand bluestem, sand reedgrass,
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