HomeMy WebLinkAbout20010585.tiff soil survey of
Weld County, Colorado
Southern Part
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United States Department of Agriculture
Soil Conservation Service
in cooperation with
Colorado Agricultural Experiment Station
2001-0585
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44 SOIL SURVEY
to allow moisture accumulation. Generally precipitation is Permeabi ' is rapid. Available water capacity is low.
too 1 make b rcial use of fertilizer. The effe• .oting depth is 60 inches ore. Surface
e m g, stri ing, and mi ' il- runof ium, and he erosion h oderat .
and t osion. .•itential n. •getatio Mate tle
la re control g ama,
Terr o may be - b contr. / osion. em side, . ama,s lea nd
otential
otential vegetat'• • ominated+ by hairy gram. in favor al
wes n whea nd blue i uffalogr ' also producti' ,,ar./.:es fro unds
le
present. P 1 produ ges fro unds years it t pounds ' vorab . As range
per ac vorable ,! 0 600 you favorable tio• a rid orates• maI and andsses fora deer ue
action
ye range deterior ♦ ue grams-buf-
falo s s.. . Undesira s and annuals in- drops.
vade the ange cond. ' comes poorer. Man t of on shoul ed on
M., •nt of vege -this soil shoul ed
half of t annual p . Def az-
on t: half and -4. alf of the total o uc- ing i acti proving nditio g and
tion. Range pi ' ` reduce runoff. •"s desirable mechanic ment are ' real.
Wi s and en ' ntal pl generall
if the ra an poor gram nditio wheatgrass, no to these nsite ' tion is - o
blue ,'sideoats ograss, pubescent ins if pl are fe •
w ss, and crested ss are suitable r seed- ildlife ons ar becau-• ecessary
i , e grass select meet the seaso airs- habitat s are 1 ecause • the ge
ments of livesto an be seeded into , firm is only nd will ' ex sled
sorghum stub t can be drilled int prepared
antel e c eeded in
seedbed. early in spring has ost success- q
m g gresipi ,er de sui ble
fur. habitat o soils.
i aka and environm tings of trees and Po s poo ban reatio op
commonly grown ' a are generally 11me .hie g soil s are the oarse
suited to this soil ion to control c BO slog rapid pe y. Capa-
vegetation should inued for as m 8s bility su Its VIIs n Gravel
possible followi ng.Trees that ited and Breaks -S , - site.
have good are Rocky Mo per, eastern 68—Valent sand,0 to 3 percent slopes This is a deep,
redcedar sa pine, Si ussian-olive, and excessively drained soil on plains at elevations of 4,650 to
' hack e shrubs best skunkbush 5,100 feet. It formed in eolian deposits. Included in
rian peashrub,a rican plum. mapping are small areas of soils that have lime within a
ry dlife is an impo ondary use o The depth of 40 inches.
;j cropland areas p vorable habi , g-necked Typically the surface layer is brown sand about 8
rl pheasant and g dove. Man e species can inches thick. The underlying material to a depth of 60
be attrac stablishing eating and escape inches is brown sand.
i cover. easants, undis - 'esting cover S' . . n- Permeability is rapid. Available water capacity is
tial ould be inclu plans for ha.' ` op- moderate. The effective rooting depth is 60 inches or
ment, especially in intensive a.
• * . Range- more. Surface runoff is slow, and the erosion hazard is
land wildlife, for e, the pron ' ' elope, can be low.
attracted b oping live:- . tering facilities, This soil is suited to limited cropping. Intensive
managin ck grazing, : of-edtng where - cropping is hazardous because of erosion. The cropping
T - as poor pot or urban and al system should be limited to such close grown crops as al
de ent. Slow .ility and hi swell falfa, wheat, and barley. The soil also is suited to ir-
cause problems i ' ng and roa tion. Capa- rigated pasture. A suitable cropping system is 3 to 4
bility subclas jJ irrigated, I rigated; Clayey years of alfalfa followed by 2 years of corn and small
Plains ran• grain and alfalfa seeded with a nurse crop.
68— , orriorthen rately steep. These are Closely spaced contour ditches or sprinkers can be used
d - - essively dr ' oils on terrace and in irrigating close grown crops. Contour furrows or sprin
esc• .ments at s of 4,450 to - . They klers should be used for new crops. Applications of bar
formed in gr uvium and h. .''s of 9 to 25._nyard manure and commercial fertilizer help to maintain
percent. I in mapping an .reas of soils that good production. g sand
have of sandy roa ,'•m in the u ingThe potential vegetation is dominated by
ma bluestem, sand reedgrass, switchgrass, sideoats grams
ally the surf- • - is pale brow y sand needleandthread, little bluestem, and blue grama. Poten
ut 10 inches t.' -e underlying to a depth tial production ranges from 2,500 pounds per acre A,
of 60 inches i- .wn gravelly s favorable years to 1,800 pounds in unfavorable years.
apC
WELD COUNTY, COLORADO, SOUTHERN PART 45
a __ range condition deteriorates, the sand bluestem, The potential vegetation is dominated by sand
sH�tchgrass, sand reedgrass, sideoats grama, and little bluestem, sand reedgrass, switchgrass, sideoats grama,
bluestem decrease, forage production drops, and sand needleandthread, little bluestem, and blue grams. Poten-
sage increases. Undesirable weeds and annuals invade tial production ranges from 2,500 pounds per acre in
, and "blowout" conditions can occur as range condition favorable years to 1,800 pounds in unfavorable years. As
al becomes poorer. range condition deteriorates, the sand bluestem,
.t Management of vegetation on this soil should be based switchgrass, sand reedgrass, sideoats grama, and little
i_ on taking half and leaving half of the total annual produc- bluestem decrease, forage production drops, and sand
tion. Seeding is desirable if the range is in poor condition. sage increases. Undesirable weeds and annuals invade
Sand bluestem, sand reedgrass, indiangrass, switchgrass, and "blowout" conditions can occur as range condition
sideoats grama, little bluestem, and blue grama are suita- becomes poorer.
4 ble for seeding. Because this soil is susceptible to soil Management of vegetation on this soil should be based
blowing, it should be seeded using an interseeder, or the on taking half and leaving half of the total annual produc-
nd seed should be drilled into a firm, clean sorghum stubble. tion. Seeding is desirable if the range is in poor condition.
Seeding early in spring has proven most successful. Brush Sand bluestem, sand reedgrass, indiangrass, switchgrass,
a management also can help in improving deteriorated side-oats grama, little bluestem, and blue grama are suita-
k age ble for seeding. Because this soil is susceptible to soil
Windbreaks and environmental plantings are fairly well blowing, it should be seeded using an interseeder or the
7 suited to this soil. Blowing sand and the moderate availa- seed should be drilled into a firm, dean sorghum stubble.
fr ble water capacity are the principal hazards in establish- Seeding early in spring has proven most successful. Brush
ing trees and shrubs.The soil is so loose that trees should management can also help in improving deteriorated
m be planted in shallow furrows, maintaining vegetation range.
.iI' between the rows. Supplemental irrigation is needed to Windbreaks and environmental plantings are generally
insure survivaL Trees that are best suited and have good not suited to this soil. Onsite investigation is needed to
survival are Rocky Mountain juniper, eastern redcedar, determine if plantings are feasible.
ponderosa pine, and Siberian elm.The shrubs best suited Wildlife is an important secondary use of this soiL Ran-
W are skunkbush sumac,lilac,and Siberian peashrub. geland wildlife, for example, the pronghorn antelope, can
Wildlife is an important secondary use of this soil. The be attracted by developing livestock watering facilities,
cropland areas provide favorable habitat for ring-necked managing livestock grazing,and reseeding where needed.
pheasant and mourning dove. Many nongame species can This soil has fair potential for urban development. The
be attracted by establishing areas for nesting and escape chief limiting soil features are the rapid permeability and
cover. For pheasants, undisturbed nesting cover is essen- the susceptibility to soil blowing. Septic tank absorption
i tial and should be included in plans for habitat develop- .fields function properly, but in places the sandy sub-
4 ment, especially in areas of intensive agriculture. Range- stratum does not properly filter the leachate. Sewage
8 land wildlife, for example,the pronghorn antelope, can be lagoons must be sealed. Once established, lawns, shrubs, I
60 attracted by developing livestock watering facilities, and trees grow well. Capability subclass VIe irrigated,
managing livestock grazing,and reseeding where needed. VIe nonirrigated; Deep Sand range site.
is This soil has fair potential for urban development. The 71 alent-Lo omplex, 0 to ercent slopes. This
or primary limiting soil features are the rapid permeability I moder. 'ping map cupies hills, ri
is and the susceptibility to soil blowing. Septic tank absorp- epres pothole-lik in the san t
tion fields function properly, but in places the sandy sub- e vatio j ,.70 to 4,700 e Valent so. up
ce stratum does not properly filter the leachate. Sewage about ; cent of the e Loup soil 5 per-
lg lagoons must be sealed. Once established, the lawns, ce • .ut 5 percent • e sand. The soil occu-
al- shrubs, and trees grow well. Capability subclass We ir- - e hills and • d the Loup c depressions
ir- rigated, VIe nonirrigated; Deep Sand range site. o .otholes.
4 70—Valent sand, 3 to 9 percent slopes. This is a deep, The Valen is deep an sively drai
•
all excessively drained soil on plains at elevations of 4,650 to formed in deposits. T the surfac• t is
5,100 feet. It formed in eolian deposits. Included in brown out 8 inches . The under] • •terial
ed mapping are small areas of soils that have lime within a to a of 60 inches i sand.
n- depth of 40 inches. Also included are small areas of soils ability is r vailable w apacity is
sr- that have sandstone between 40 and 60 inches. rate. The of rooting de. , 60 inche r
tin Typically the surface layer of the Valent soil is brown more. Surface is slow, an. -rosion ha
sand about 6 inches thick. The underlying material to a low.
nd depth of 60 inches is brown sand. The Lo is deep an. ' drained. ed in
aa, Permeability is rapid. Available water capacity is sandy m. Typical] •urface laye ry dark
,n- moderate. The effective rooting depth is 60 inches or gra • own, mottle. y sand abo ches thick.
in more. Surface runoff is slow, and the erosion hazard is Terlying
moa oamy sand a o dy chesloa is light
As low. bro nish gray,
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