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WELD COUNTY, COLORADO, SOUTHERN PART 49
<br />shrubs best suited are skunkbush sumac, lilac, and Siberi- and switchgrass decrease and blue grama, sand dropseed
<br />
<br />an peashrub. ,
<br />and sand sage increase. Annual weeds and grasses invade
<br />Wildlife is an important secondary use of this soil. The the site as range condition becomes poorer.
<br />cropland areas provide favorable habitat for ring-necked Management of vegetation on this soil should be based
<br />pheasant and mourning, dove. Many nongame species can on taking half and leaving half of the total annual produc-
<br />be attracted by establishing areas for nesting and escape tion. Seeding is desirable if range is in poor condition.
<br />cover. For pheasants, undisturbed nesting cover is essen-
<br />tial and should be included in plans for habit
<br />t d
<br />l Sand bluestem, sand reedgrass, switchgrass, sideoats
<br />a
<br />eve
<br />op-
<br />ment, especially in areas of intensive agriculture. Range- grams, blue grama, pubescent wheatgrass. and crested
<br />wheat.grass are suitable for seeding. The grass selected
<br />land wildlife, for example, the pronghorn antelope, can be should meet the seasonal requirements of livestock. It can
<br />attracted by developing livestock watering facilities, be seeded into a clean, firm sorghum stubble, or it can be
<br />managing livestock grazing, and reseeding where needed,
<br />This soil has good potential for urban and
<br />ti
<br />l drilled into a firm prepared seedbed. Seeding early in
<br />recrea
<br />ona
<br />development. Lawns, shrubs, and trees grow well. The spring has proven most successful.
<br />Windbreaks and environmental plantings generally are
<br />only limiting feature is the rapid permeability in the sub- suited to this soil. Soil blowing, the principal hazard in
<br />stratum, which causes a hazard of ground water con-
<br />tamination from sewage lagoons
<br />Capabilit
<br />subcl
<br />Il establishing trees and shrubs, can'be controlled by cul-
<br />ti
<br />i
<br />l
<br />.
<br />y
<br />ass
<br />e
<br />irrigated; I Ve nonirrigated; Sandy Plains range site. vat
<br />ng on
<br />y in the tree row and by leaving a strip of
<br />vegetation between the rows. Supplemental irrigation
<br />77-Vona sandy loam, 3 to 5 percent slopes. This is a
<br />deep
<br />well drain
<br />d
<br />il
<br />l may be needed at the time of planting and during dry
<br />,
<br />e
<br />so
<br />on p
<br />ains at elevations of 4,600 to
<br />5
<br />200 f
<br />t
<br />I periods. Trees that are best suited and have good survival
<br />,
<br />ee
<br />.
<br />t formed in eolian deposits. Included in are Rocky Mountain juniper, eastern redcedar, ponderosa
<br />mapping are small areas of soils that have a loamy sub- pine, Siberian elm, Russian-olive, and hackberry. The
<br />stratum and areas of soils that are noncalcareous to a
<br />depth of 60 inches shrubs best suited are skunkbush sumac, lilac and Siberi-
<br />.
<br />Typically the surface layer of this Vona soil is grayish an peashrub.
<br />Wildlife is an important secondary use of this soil
<br />The
<br />brown sandy loam about 8 inches thick. The subsoil is
<br />brown fine sandy loam about 15 i
<br />h
<br />thi
<br />k
<br />T .
<br />cropland areas provide favorable habitat for ring-necked
<br />nc
<br />es
<br />-
<br />c
<br />he sub-
<br />stratum to a depth of 60 inches is sandy loam pheasant and mourning dove- Many nongame species can
<br />b
<br />.
<br />Permeability is moderately rapid. Available water e attracted by establishing areas for nesting and escape
<br />cover. For pheasants, undisturbed nesting cover is essen-
<br />capacity is moderate. The effective rooting depth is 60
<br />inches or more
<br />Surface runoff i
<br />di tial and should be included in plans for habitat develop-
<br />.
<br />s me
<br />um, and the erosion
<br />hazard is low ment, especially in areas of intensive agriculture. Range-
<br />.
<br />In irrigated areas this soil is suited to the c land wildlife, for example, the pronghorn antelope,
<br />rops corn-
<br />monly grown in the area. Perennial grasses and alfalfa or attracted by developing livestock watering facilities,
<br />managing livestock grazing
<br />and reseeding where needed
<br />
<br />close grown crops should be grown at least 50 percent of
<br />the time. Contour ditches and corru
<br />ations can b
<br />d i ,
<br />.
<br />This soil has good potential for urban and recreational
<br />g
<br />e use
<br />n
<br />irrigating close grown crops and pasture. Furrows, con- development. Lawns, shrubs, and trees grow well. The
<br />only limiting feature is the rapid permeability in the sub-
<br />tour furrows, and cross slope furrows are suitable for row
<br />crops. Sprinkler irrigation is
<br />ls
<br />d
<br />i
<br />bl stratum, which causes a hazard of ground water con-
<br />a
<br />o
<br />es
<br />ra
<br />e. Keeping til-
<br />lage to a minimum and utilizing crop residue help to con- termination from sewage lagoons. Capability subclass IIIe
<br />irrigated, V le nonirrigated- Sandy Plains range site
<br />
<br />trol erosion. Maintaining fertility is important. Crops
<br />respond to applications of phosphorus and nitro
<br />en .
<br />78---Weld loam, 0 to 1 percent slopes. This is a deep,
<br />ll d
<br />g
<br />,
<br />In nonirrigated areas this soil is suited to winter wheat we
<br />rained soil on smooth plains at elevations of 4,850 to
<br />5
<br />00
<br />f
<br />,
<br />barley, and sorghum. Most of the acreage is planted to
<br />i ,
<br />0
<br />eet. It. formed in eolian deposits. Included in
<br />mapping are small areas of soils that have a subsoil of
<br />w
<br />nter wheat. The predicted average yield is 28 bushels
<br />per acre. The soil is summer followed in alternate years loam and light clay loam. Also included are sorne leveled
<br />area
<br />
<br />to allow moisture accumulation. Generally precipitation is
<br />too low to make beneficial use of fertilizer s.
<br />Typically the. surface layer of this Weld soil is brown
<br />.
<br />Mulch farming,.
<br />stripcropping, and minimum tillage are loam about 10 inches thick. The subsoil is brown and
<br />pale
<br />brown heavy clay loam and light clay about 20 inches
<br />needed to control soil blowing and water erosion- Terrac-
<br />ing also may be needed to control water
<br />r
<br />i thick. The substratum to a depth of 60 inches is silt loam.
<br />e
<br />os
<br />on.
<br />The potential native vegetation on this range site is Permeability is slow. Available water capacity is high.
<br />The effective rooting depth is 60 inches or more
<br />Su
<br />fa
<br />
<br />dominated by sand bluestem, sand reedgrass, and blue
<br />grama. Needleandthread; switchgrass
<br />sideoats .
<br />r
<br />ce
<br />runoff is slow, and the erosion hazard is low.
<br />Th
<br />,
<br />grama,
<br />is soil is used almost entirely for irrigated crops. It
<br />and western wheatgrass are also prominent. Potential is suited to all crops commonly grown in the area includ-
<br />production ranges from 2,200 pounds per acre in favora- i
<br />ble years to 1,800 pounds in unfavorable
<br />A ng corn, sugar beets, beans, alfalfa, small grain, potatoes,
<br />years.
<br />s range and onions. An example of a suitable cropping system is 3
<br />condition deteriorates, the sand bluestem
<br />sand reed
<br />rass
<br />t
<br />4
<br />,
<br />g
<br />, o
<br />years of alfalfa followed by corn, corn for silage,
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