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WELD COUNTY, COLORADO, SOUTHERN PART 47 <br />be attracted by establishing areas for nesting and escape wheatgrass are suitable for seeding. The grass selected <br />cover. For pheasants, undisturbed nesting cover is essen- should meet the seasonal requirements of livestock. It can <br />tial and should be included in plans for habitat develop- be seeded into a clean, firm sorghum stubble, or it can be <br />ment, especially in areas of intensive agriculture. Range- drilled into a firm prepared seedbed. :feeding early in <br />land wildlife, for example, the pronghorn antelope, can be spring has proven most successful. <br />attracted by developing livestock watering facilities; Windbreaks and environmental plantings are fairly well <br />managing livestock grazing, and reseeding where needed. suited to this soil. Blowing sand and low available water <br />This soil has good potential for urban and recreational capacity are the principal hazards in establishing trees <br />development. Once established, the lawns, shrubs; and and shrubs. The soil is so loose that trees should be <br />trees grow well. The chief limiting soil feature is the planted in shallow furrows and vegetation maintained <br />rapid permeability in the substratum, which causes a between the rows. Supplemental irrigation may be needed <br />hazard of ground water contamination from sewage to insure survival. Trees that are best suited and have <br />lagoons. In places recreational development is limited by good survival are Rocky Mountain juniper, western <br />the susceptibility to soil blowing. Capability subclass Itle redeedar, ponderosa pine, and Siberian elm. The shrubs <br />irrigated, IVe nonirrigated; Sandy Plains range site. best suited are skunkbush sumac, lilac, and Siberian <br />73-Vona loamy sand, 3 to 5 percent slopes- This is a peashrub. <br />deep, somewhat excessively drained soil on plains and Wildlife is an important secondary use of this soil. The <br />high terraces at elevations of 4,600 to 5,200 feet. It cropland areas provide favorable habitat for ring-necked <br />formed in eolian or alluvial deposits. Included in mapping pheasant and mourning dove- Many nongame species can <br />are some leveled areas. Also included are small areas of be attracted by establishing areas for nesting and escape <br />soils that have a loamy substratum and some areas of cover. For pheasants, undisturbed nesting cover is essen- <br />soils that are nonealeareous to a depth of 60 inches. tial and should be included in plans for habitat develop- <br />Typically the surface layer of this Vona soil is grayish ment, especially in areas of intensive agriculture. Range- <br />brown. The upper 6 inches is loamy sand and the lower 5 land wildlife, for example, the pronghorn antelope, can be <br />inches is fine sandy loam. The subsoil is brown and light attracted by developing livestock watering facilities, <br />yellowish brown fine sandy loam about 14 inches thick. managing livestock grazing, and reseeding where needed. <br />The substratum to a depth of 60 inches is sandy loam. This soil has good potential for urban and recreational <br />Permeability is moderately rapid. Available water development. Once established, the lawns, shrubs, and <br />capacity is moderate. The effective rooting depth is 60 trees grow well. The primary limiting soil feature is the <br />inches or more. Surface runoff is slow, and the erosion rapid permeability in the substratum, which causes a <br />hazard is low. hazard of ground water contamination from sewage <br />This soil is suited to limited cropping. Intensive lagoons. In places recreational development is limited by <br />cropping is hazardous because of soil blowing. The the susceptibility to soil blowing. Capability subclass IVe <br />cropping system should be limited to such close grown irrigated, Vle nonirrigated Sandy Plains range site. <br />crops as alfalfa, wheat, and barley. The soil is also suited 74--Vona loamy sand, 5 to 9 percent slopes. This is a <br />to irrigated pasture. A suitable cropping stem is 3 to 4 <br />tiy' deep, somewhat excessively drained soil on plains at <br /> <br />years of alfalfa followed 2 years of corn and small elevations of 4,600 to 5,200 feet. It formed in eolian <br /> <br />grain and alfalfa seeded with h a nurse crop. deposits. Included in mapping are small areas of soils that <br /> <br />Closely spaced contour ditches or sprinklers can be have a loamy substratum and areas of soils that are non- <br />used in irrigating close grown crops. Contour furrows or ca <br />oas <br />to <br />a <br />depth <br />60 inches. <br />spinklers should he used for new crops. Application of Typica <br />surface a l <br />lly <br />th <br />e <br />Typiayer is grayish brown. The upper <br /> <br />barnyard manure and commercial fertilizer hel <br />s to m <br />i 6 inches is loamy sand and the lower 4 inches is fine <br />p <br />a <br />n- <br />Lain good production- sandy loam. The subsoil is brown and light yellowish <br /> <br />The potential native vegetation on this range site is brawn fine sandy loam about 12 inches thick. The sub- <br /> <br />dominated by sand bluestem, sand reedgrass <br />and blue stratum to a depth of 60 inches is loamy sand. <br />, <br />grama. Needleandthread, switchgrass, sideoats grama, <br />d Permeability is moderately rapid. Available water <br /> <br />a <br />capacity is moderate. The effective rooting depth is 60 <br />an <br />western wheat ass are also <br />gr' prominent. Potential <br />production ranges from 2 <br />200 <br />ounds <br />i <br />f inches or more. Surface runoff is medium, and the erosion <br />, <br />p <br />per acre <br />n <br />avora- <br />ble years to 1,800 pounds in unfavorable years <br />As range hazard is low. <br />T <br />. <br />condition deteriorates <br />the sand bluestem <br />sand reed <br />ra he potential native vegetation on this range site is <br />, <br />, <br />g <br />ss, <br />and switchgrass decrease and blue grama <br />sand dro <br />seed dominated by sand bluestem, sand reedgrass, and blue <br />N <br />, <br />p <br />, <br />and sand sage increase. Annual weeds and grasses invade grama. <br />eed leandthread, switchgrass, sideoats grama, <br />d <br /> <br />the site as range condition becomes poorer an <br />western wheatgrass are also prominent: Potential <br />. <br />Management of vegetation on this soil should b <br />b <br />d production ranges from 2,200 pounds per acre in favora- <br />e <br />ase <br />on taking half and leaving half of the total annual <br />rodue- tile. years to 1,800 pounds in unfavorable ,years. As range <br />i <br />di <br />p <br />Lion. Seeding is desirable if the range is in <br />oor conditi con <br />t <br />on deteriorates, the sand bluestem, sand reedgrass, <br />d <br />i <br />h <br />p <br />on. <br />Sand bluestem, sand reedgrass, switchgrass, sideoats sw <br />an <br />tc <br />grass decrease and blue grama, sand dropseed, <br />and sand sage increase. Annual weeds and grasses invade <br />grama, blue grama, pubescent wheatgrass, and crested the site as range: condition becomes poorer.