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.. _ ... . _. _ WELD COUNTY, COL
<br />needed at the time of planting and during dry periods
<br />Trees that are best suited and have. good survival ar
<br />Rocky Mountain juniper, eastern redcedar, ponderosa
<br />pine, Siberian elm, Russian-olive, and hackberry. The
<br />shrubs best suited are skunkbush sumac, lilac, and Siberi-
<br />an peashrub. - -
<br />Wildlife is an important secondary use of-this soil. The
<br />cropland areas provide favorable habitat for ring-necked
<br />pheasant and mourning dove. Many nongame species can
<br />be attracted by establishing areas for nesting and escape
<br />cover. Far pheasants, undisturbed nesting cover is essen-
<br />tial and should be included in plans for habitat develop-
<br />ment. Rangeland wildlife, for example, the pronghorn an-
<br />telope, can be attracted by developing livestock watering
<br />facilities, managing livestock grazing, and reseeding
<br />where needed.
<br />Few aeeas of this Ascalon-soil are in major growth and
<br />urbanized centers. The shrink-swell potential of the sub-
<br />soil as it wets and dries is the most limiting-soil feature
<br />that must be considered in planning homesites'and con-
<br />structing roads. ,Capability subclass IVe nonirrigated;
<br />Sandv Plains range site.
<br />well drained soil on terraces at elevations?of 4,500 to 4,901
<br />feet. It farmed in alluvium deposited by the major river:
<br />'n the survey area, .Included in mapping are small area:
<br />here sand and grave] aze within a depth of 60 inches
<br />Also included are small areas.of soils that have a clay
<br />loam subsoil.
<br />Typeially the surface layer of this Ascalon soil is brow-
<br />loam about 10 inches thick,. The subsoil is brown and yel-
<br />lowish~ brown sandy clay loam about 15 inches thick. The
<br />substratum to a depth 60 inches is calcareous sandy loam.
<br />`Permeability is modeiate.-Ava}lable water capacity is
<br />high, .The effective rooting depth is 60 inches or more.
<br />Surface runoff is slow, and the erosion hazard is low.
<br />This soli is used almost entirely for irrigated crops. It
<br />is suited to all crops commonly grown in the area, inelud-
<br />mg.eorn, sugar beets, beans, alfalfa, small grain, potatoes,
<br />and onions, An example of a suitable cropping system is 3
<br />to 4 years of alfalfa followed by corn, corn for silage,
<br />sugar beets, small grain, or beans. ".~'ew conservation prac-
<br />tices are needed to maintain top yields.
<br />All methods of irrigation are suitable, but furrow ir-
<br />rigation-is the most eommon:.Barnyard manure and com-
<br />mercial fertilizer are needed for top yields.
<br />Windbreaks and environmental plantings are generally
<br />well suited to this soil. Cultivation to control competing
<br />vegetation should be continued for as many years as
<br />possible following planting, Trees that are .best suited and
<br />have good survival are Rocky Mountain juniper, eastern
<br />redcedar, ponderosa pine, Siberian elm, Russian-o&ve, and
<br />hackberry. The shrubs best suited are skunkbush sumac,
<br />lilac, Siberian peashrub, and American, plum.
<br />Wildlife is an important secondary use of this soil. The
<br />cropland areas provide favorable habitat for ring-necked
<br />pheasant and mourning dove. Many nongame species can
<br />be attracted by establishing areas for nesting and escaoe
<br />ORADO, SOUTHERN PART
<br />II
<br />cover. For pheasants, undisturbed nesting cover is essen-
<br />e tial and should be included in plans for habitat develop-
<br />ment, especially in areas of intensive agriculture,
<br />This soil has good potential for urban and recreational
<br />development. Increased population growth in the survey
<br />area has resulted in increased homesite construction. The
<br />chief limiting soi} features for urban development-are the
<br />shrink-swell potential of the subsoil as it wets and dries
<br />nd the limited ability of this soil to support a load. Septic
<br />auk absorption fields function properly, but community
<br />sewage systems should be provided if the population den-
<br />sity increases. Because of the moderately rapid permea-
<br />bility of the substratum, sewage lagoons must be'sealed.
<br />Lawns, shrubs, and trees grow well. Capability class I ir-
<br />ri~atarl
<br />' 9~Ascalomloam, 1 to 3 percent slopes. This is a d ee p,
<br />well drained soil on terraces. at elevatiohs of 4,500 to 4,900
<br />feet. It formed in alluvium deposited by the major rivers
<br />in the survey area. Included in mapping aze small areas
<br />where sand and gravel are within a depth of 60 inches.
<br />Also included are smaII areas of soils that have a clay
<br />Loam subsoil.
<br />Typically the surface layer of this Ascalon soil is blown
<br />loam about ZO inches thick, The subsoil is brown and yel-
<br />lowish brown sandy clay loam about 15 inches thick. The
<br />substratum to a depth of 60 inches is calcareous sandy
<br />loam.
<br />Permeability is moderate. Available water capacity is
<br />n high. The effective rooting depth is 60 inches or more.
<br />Surface runoff is medium, and the erosion hazazd is low.
<br />This soil is used almost entirely for irrigated crops. It
<br />is suited to all crops commonly grown in the area, includ-
<br />ing corn, sugar beets, beans, alfalfa, small grain, potatoes,
<br />and onions. An example of a suitable cropping system is 3
<br />to 4 years of alfalfa followed by corn, corn Yor silage,
<br />sugar beets, small grain, or beans. Land leveling, ditch
<br />"lining, and installing pipelines may be needed for proper
<br />water application,
<br />All methods of irrgation are suitable, but furrow in
<br />rigation is the most common. Barnyard manure and com-
<br />mercial fertilizer are needed for top yields. .
<br />Windbreaks and environmental plantings of trees and
<br />shrubs commonly grown in the area are generally well
<br />suited to this soil, Cultivation to control competing
<br />vegetation should be continued for as many yeazs as
<br />possible following planting, Trees that are hest suited and-
<br />haYe good survival are Rocky Mountain juniper, eastern
<br />redcedar, ponderosa pine, Siberian elm, Russian-olive, and
<br />hackberry. The shrubs best suited are skunkbush sumac,
<br />lilac, Siberian peashrub, and American plum.
<br />Wildlife is an important secondary use of this soil. The
<br />cropland areas provide favorable habitat for ring-necked
<br />pheasant and mourning dove. Many nongame species can
<br />be attracted by establishing areas for nesting and escape
<br />cover. For pheasants, undisturbed nesting cover is essen-
<br />tial and should be included in plans for habitat develop-
<br />ment, especially in areas of intensive agriculture.
<br />'Rai
<br />'F.
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