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Home My WebLink About960559.tiff S- 44 SOIL SURVEY to allow moisture accumulation. Generally precipitation is Permeability is rapid. Available water capacity is low. too low to make beneficial use of fertilizer. The effective rooting depth is 60 inches or more. Surface Stubble mulch farming, striperopping, and minimum til- runoff is medium, and the erosion hazard is moderate. lage are needed to control soil blowing and water erosion. The potential native vegetation is dominated by little Terracing also may be needed to control water erosion. bluestem, sideoats grama, sand reedgrass, blue grama, The potential native vegetation is dominated by hairy grama, switchgrass, and needleandthread. Potential western wheatgrass and blue grama. Buffalograss is also production ranges from 700 pounds per acre in favorable present. Potential production ranges from 1,000 pounds years to 200 pounds in unfavorable years. As range condi- per acre in favorable years to 600 pounds in unfavorable tion deteriorates, the tall and mid grasses decrease, blue years. As range condition deteriorates, a blue grama-buf- grama and hairy grama increase, and forage production falograss sod forms. Undesirable weeds and annuals in- drops. vade the site as range condition becomes poorer. Management of vegetation should be based on taking Management of vegetation on this soil should be based half or less of the total annual production. Deferred graz- on taking half and leaving half of the total annual produc- ing is practical in improving range condition. Seeding and tion. Range pitting can reduce runoff. Seeding is desirable mechanical treatment are impractical. Windbreaks and environmental plantings generally are if the range is in e poor condition. Western pubescent wheatgrass, not suited to these soils. Onsite investigation is needed to blue grama,and idrests grama, buffalograss,are suitable for - determine if plantings are feasible. wheatgrass,e crested are suitable for seed- Wildlife populations are limited because the necessary ing. The grass selected should meet the seasonal require- habitat elements are lacking. Because most of the acreage ments of livestock. It can be seeded into a clean, firm is rangeland, only rangeland wildlife, for example scaled sorghum stubble, or it can be drilled into a firm prepared quail and antelope, are typical. Extreme care is needed in ea seedbed. Seeding early in spring has proven most success- managing livestock grazing in order to provide suitable ful. habitat on these soils. Windbreaks and environmental plantings of trees and Potential is poor for urban and recreational develop- shrubs commonly grown in the area are generally well ment. The chief limiting soil features are the loose, coarse suited to this soil. Cultivation to control competing textured soil, steep slopes, and rapid permeability. Capa- vegetation should be continued for as many years as bility subclass VIIs irrigated, VIIs nonirrigated; Gravel possible following planting. Trees that are best suited and Breaks range site. have good survival are Rocky Mountain juniper, eastern 169—Valent sand, 0 to 3 percent slopes. This is a deep, redcedar, ponderosa pine, Siberian elm, Russian-olive, and excessively drained soil on plains at elevations of 4,650 to hackberry. The shrubs best suited are skunkbush sumac, 5,100 feet. It formed in eolian deposits. Included in lilac, Siberian peashrub, and American plum. mapping are small areas of soils that have lime within a Wildlife is an important secondary use of this soil. The depth of 40 inches. cropland areas provide favorable habitat for ring-necked Typically the surface layer is brown sand about 8 pheasant and mourning dove. Many nongame species can inches thick. The underlying material to a depth of 60 be attracted by establishing areas for nesting and escape inches is brown sand. cover. For pheasants, undisturbed nesting cover is essen- Permeability is rapid. Available water capacity is tial and should be included in plans for habitat develop- moderate. The effective rooting depth is 60 inches or ment, especially in areas of intensive agriculture. Range- more. Surface runoff is slow, and the erosion hazard is land wildlife, for example, the pronghorn antelope, can be low. attracted by developing livestock watering facilities, This soil is suited to limited cropping. Intensive managing livestock grazing, and reseeding where needed. cropping is hazardous because of erosion. The cropping . This soil has poor potential for urban and recreational system should be limited to such close grown crops as al- development. Slow permeability and high shrink swell falfa, wheat, and barley. The soil also is suited to ir- cause problems in dwelling and road construction. Capa- rigated pasture. A suitable cropping system is 3 to 4 bility subclass IIIe irrigated, We nonirrigated; Clayey years of alfalfa followed by 2 years of corn and small Plains range site. grain and alfalfa seeded with a nurse crop. (i8—Ustic Torriorthents, moderately steep. These are Closely spaced contour ditches or sprinkers can be used deep, excessively drained soils on terrace breaks and in irrigating close grown crops. Contour furrows or sprin- escarpments at elevations of 4,450 to 5,1110 feet. They klers should be used for new crops. Applications of bar- formed in gravelly alluvium and have slopes of 9 to 25 nyard manure and commercial fertilizer help to maintain percent. Included in mapping are small areas of soils that. good production.have pockets of sandy loam and loam in the underlying The potential vegetation is dominated by sand material. bluestem, sand reedgrass, switchgrass, sideoats grama, Typically the surface layer is pale brown gravelly sand needleandthread, little bluestem, and blue grama. Paten- about 10 inches thick. The underlying material to a depth tial production ranges from 2,500 pounds per acre in of 60 inches is pale brown gravelly sand. favorable years to 1,800 pounds in unfavorable years. As 960559 WELT UNTY, COLORADO, SOUTHERN PART 45 range condition deteriorates, the sand bluestem, The potential vegetation is dominated by sand switchgrass, sand reedgrass, sideoats grama, and little bluestem, sand reedgrass, switchgrass, sideoats grama, bluestem decrease, forage production drops, and sand needleandthread, little bluestem, and blue grama. Poten-ction pounds per acre in i and "blowout" conditions (e weeds can occursnd ass range (s invade tial condition favorable years ranges on 1,800 ponds in unfavorable years. As becomes poorer. range condition deteriorates, the sand bluestem, Management of vegetation on this soil should be based switchgrass, sand reedgrass, sideoats grama, and little 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. ble for seeding. Because this soil is susceptible to soil Management of vegetation on this soil should be based and leaving half al annual produc- seedishouldybeudrilled into ea firm, clean sorghumr stubble. tion. Seeding hold be seedd using an interseede , or the on taking f is desirable if then range isf the tin poor condition. Seeding early in spring has proven most successful. Brush Sand bluestem, sand reedgrass, indiangrass, switchgrass, management also can help in improving deteriorated side-oats e for Sseedng.rama, Ilttle Because this soil is, and sue sceptible rama are tosuita- range. Windbreaks and environmental plantings are fairly well blowing, it should be seeded using an interseeder or the suited to this soil. Blowing sand and the moderate availa- seed should be drilled into a firm, clean sorghum stubble. 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 be planted in shallow furrows, maintaining vegetation range. 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 Wigel and is an i p e, o ant secondary pronghornus of this soil. Ran- fe , can are skunkbush sumac, lilac, and Siberian peashrub. ge 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 s susceptibility fu nction properly, ilitblo in placestic tanksabsody abssorption and should be included in plans for habitat develop- ment, especially in areas of intensive agriculture. Range- stratum does not properly filter the leachate. Sewage land wildlife, for example, the pronghorn antelope, can be lagoons must be sealed. Once established, lawns, shrubs, 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. This soil has fair potential for urban development. The 71—Valent-Loup complex, 0 to 9 percent slopes. This primary limiting soil features are the rapid permeability level to moderately sloping map unit occupies hills, ridges,and the susceptibity to soil blowing.tionfields function properly, but t tank spothole-like in places b- elevations of 4,670 4,700 f et. The Valent soil makes l up stratum does not properly filter the leachate. Sewage about 60 percent of the unit, the Loup soil about 35 per- lagoons must be sealed. Once established, the lawns, cent. About 5 percent is dune sand. The Valent soil occu- shrubs, and trees grow well. Capability subclass IVe ir- pies or s the hills and ridges and the Loup soil the depressions rigated, VIe nonirrigated; Deep Sand range site. potholes. is deep and It 70—Valent sand, 3 to 9 percent slopes. This is a deep, The Valent soil dexcessivelythe surfacedrained.layer is excessively drained soil on plains at elevations of 4,650 to formed in eolian deposits. Typically 5,100 feet. It formed in eolian deposits. Included in brown sand about 8 inches thick. The underlying material mapping are small areas of soils that have lime within a to a depth of 60 inches is brown sand. depth of 40 inches. Also included are small areas of soils moderate.Permeability e is sefferapi rootingd. Available il blep water 6oa achy is that phave sandstone between 40 and 60 inches. Typically the surface layer of the Valent soil is brown more. Surface runoff is slow, and the erosion hazard is sand about 6 inches thick. The underlying material to a low. depth of 60 inches isbrown The Loup soil is deep and poorly drained. It formed in sand.p Permeability is rapid. Available water capacity is sandy alluvium. Typically the surface layer is very dark moderate. The effective rooting depth is 60 inches or grayish brown, mottled loamy sand about 16 inches thick.hes is more. Surface runoff is slow, and the erosion hazard is The underlying material brownish gray, mottled loamy and and andycloam. light low. a t,4n,.. 30 '� o 22 Sr f '.. r 4'? 68 32 10 51 '' r is 9 oaa -.. t. Q 3 sourer e<✓y ^ 3 • ^,x�h "+t x5r 'yR. .. 26 51 2 rcw r51 ►�_nirc� W,• 3 �.,A 2 {1. 22 68 ^ 1 52 Rlt 66�a. • •. 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