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Home My WebLink About970200.tiff 72 72 ',10 73 47 2 2 57 - 47 44 5] rir) ' 2 4 Ni 5] 31 / 32 33 , 73 38 73 t44 c a • ' 45 2 d 1111434141. 15: 4 47 + 8 .v 74 ( 57 74 - is. 73 5] • 2 56 ..'/} y • 51 47 ` + ‘----- 8 51 2 14 48 72 57 47 51 5 . 47 47 4873 °n. (4 6 47 5 62 47 ) • 62+2 F +62 44 37 72 44 + 48 .6 I(�•\ r,.. 63 v 72 ++ \, • 511a 47 62 ) I 63 y 62 56 \fl \ 63 47 �. 47 47 62 /// 4 48 6 4 73 7� ��' 72 63 47 51 I 763, ark 76 47 73 62 58 57 J 63 72 72 / 57 62 73 37 72 / - 73 74 51 38 i 56 + 44 �. rte_ + + 4 72 73 ]3 31 4� 72 38 72 72 51 / r 17 '62 16 72 70 18 4 73 51 I _ 5 W 73 38 � h , p .:. 73 37 \ \ Zz 38 V /�/// 3 47 51 4 + 1 1 7. 37 (77z 970200 ,.,,,(\ RVEY WELD COUNTY, COLOJ tivating only in the tree row and by leaving a strip of and switchgrass decrease and blue grama, sand dropseed, vegetation between the rows. Supplemental irrigation and sand sage increase. Annual weeds and grasses invade ma a needed at the time of planting and during dry the site as range condition becomes poorer. periods. Trees that are best suited and have good survival Management of vegetation on this soil should be based are Rocky Mountain juniper, eastern redcedar, ponderosa on taking half and leaving half of the total annual produc- pine, Siberian elm, Russian-olive, and hackberry. The tion. Seeding is desirable if the range is in poor condition. shrubs best suited are skunkbush sumac, lilac, and Siberi- Sand bluestem, sand reedgrass, switchgrass, sideoats an peashrub. grama, blue grama, pubescent wheatgrass, and crested Wildlife is an important secondary use of this soil. wheatgrass are suitable for seeding. The grass selected Ring-necked pheasant, mourning dove, and many non- should meet the seasonal requirements of livestock. It can game species can be attracted by establishing areas for 'i. be seeded into a clean, firm stubble, or it can be drilled nesting and escape cover. For pheasants, undisturbed into a firm prepared seedbed. Seeding early in spring has nesting cover is essential and should be included in plans proven most successful. for habitat development, especially in areas of intensive Windbreaks and environmental plantings are generally agriculture. ' suited to this soil. Soil blowing, the principal hazard in Rapid expansion of Greeley and the surrounding area establishing trees and shrubs, can be controlled by cul- has resulted in urbanization of much of this Otero soil. tivating only in the tree row and by leaving a strip of This soil has excellent potential for urban and recrea- vegetation between the rows. Supplemental irrigation tional development. The only limiting feature is the may he needed at the time of planting and during dry moderately rapid permeability in the substratum, which periods. Trees that are best suited and have good surviva. causes a hazard of ground water contamination from ° are Rocky Mountain juniper, eastern redcedar, ponderosa sewage lagoons. Lawns, shrubs, and trees grow well. pine, Siberian elm, Russian-olive, and hackberry. The C• bility subclass Its irrigated. shrubs best suited are skunkbush sumac, lilac, and Siberi Otero sandy loam, 1 to :3 percent slopes. This is a an peashrub. deep, well drained soil on plains at elevations of 4,700 to Wildlife is an important secondary use of this soil 5,250 feet. It formed in mixed outwash and eolian Ring-necked pheasant, mourning dove, and many non deposits. Included in mapping are small areas of soils that game species can be attracted by establishing areas fo: have loam and clay loam underlying material. nesting and escape cover. For pheasants, undisturbec Typically the surface layer is brown sandy loam about nesting cover is essential and should be included in plan 12 it--Lies thick. The underlying material to a depth of 60 for habitat development, especially in areas of intensiv, inch .s pale brown calcareous fine sandy loam. agriculture. Permeability is rapid. Available water capacity is Rapid expansion of Greeley and the surrounding are. moderate. The effective rooting depth is 60 inches or has resulted in urbanization of much of this Otero soi more. Surface runoff is slow, and the erosion hazard is This soil has excellent potential for urban and recrea low tional development. The only limiting feature is th This soil is used almost entirely for irrigated crops. It moderately rapid permeability in the substratum, whic is suited to all crops commonly grown in the area. Land causes a hazard of ground water contamination fror leveling, ditch lining, and installing pipelines may be sewage lagoons. Lawns, shrubs, and trees grow wel needed for proper water application. Capability subclass IIIe irrigated, IVe nonirrigater All methods of irrigation are suitable, but furrow ir- f' Sandy Plains range site. 5 rigation is the most common. Barnyard manure and com- 52—Otero sandy loam, 3 to percent slopes. This is mercial fertilizer are needed for top yields. I deep, well drained soil on plains at elevations of 4,700 1 In nonirrigated areas this soil is suited to winter wheat, 5,250 feet. It formed in mixed outwash and eolia barley, and sorghum. Most of the acreage is planted to deposits. Included in mapping are small areas of soils tha winter wheat. The predicted average yield is 28 bushels have loam and clay loam underlying material. Also it per acre. The soil is summer fallowed in alternate years eluded are small areas of soils that have sandstone an to allow moisture accumulation. Generally precipitaiton is shale within a depth of 60 inches. too low for beneficial use of fertilizer. Typically the surface layer of this Otero soil is brow Stubble mulch farming, striperopping, and minimum til- sandy loam about 10 inches thick. The underlying materi, lage are needed to control water erosion. Terracing also to a depth of 60 inches is pale brown calcareous fir may be needed to control water erosion. sandy loam. The potential native vegetation on this range site is Permeability is rapid. Available water capacity dominated by sand bluestem, sand reedgrass, and blue moderate. The effective rooting depth is 60 inches c grama. Needleandthread, switchgrass, sideoats grama, more. Surface runoff is medium, and the erosion hazard and western wheatgrass are also prominent. Potential low. production ranges from 2,200 pounds per acre in favora- This soil is used almost entirely for irrigated crops. ble years to 1,800 pounds in unfavorable years. As range is suited to the crops commonly grown in the are ::ond" n deteriorates, the sand bluestem, sand reedgrass, Perennial grasses and alfalfa or close growing cm] 9/0200 WELD COUNTY, COLORADO, SOUTHERN PART 37 s, shrubs, and trees grow well. Capability subclass periods.be needed at the time planting during gatad. ods. Trees that are bestsuitedand have good rsurviv -Pa loam, 1 to 3 percent slopes. This is a deep, are Rocky Mountain juniper, eastern redcedar, ponderosa [rained soil on terraces at elevations of 4,700 to 5,250 pine, Siberian elm, Russian-olive, and hackberry. The It formed in alluvial deposits. Included in mapping shrubs best suited are skunkbush sumac, lilac, and Siberi- mall areas of soils that have a loamy sand surface anashrub. Wildlife ldl fe is an important secondary use of this soil. The Really the surface layer is grayish brown loam about cropland areas provide favorable habitat for ring-necked :hes thick. The underlying material to a depth of 60 pheasant and mourning dove. Many nongame species can s is light brownish gray fine sandy loam. be attracted by establishing areas for nesting and escape rrneability is moderate. Available water capacity is cover. For pheasants, undisturbed nesting cover is essen- The effective rooting depth is 60 inches or more. tial and should be included in plans for habitat develop- ice runoff is slow, and the erosion hazard is low. ment, especially in areas of intensive agriculture. is soil is used almost entirely for irrigated crops. IL This soil has good potential for urban and recreational ited to all crops commonly grown in the area, includ- development. The primary limiting feature is the rapid orn, sugar beets, beans, alfalfa, small grain, potatoes, permeability in the substratum, which causes a hazard of anions. An example of a suitable cropping system is 3 ground water contamination from sewage lagoons. Road years of alfalfa followed by corn, corn for silage, designs should be modified to compensate for the r beets, small grain, or beans. Land leveling, ditch moderate frost potential. Lawns, shrubs, and trees grow g, and installing pipelines may be needed for proper well. Capability subclass IIe irrigated, life nonirrigated; s application. 0 ow range site. II methods of irrigation are suitable, but furrow ir- ettItenohill clay loam, 0 to 3 percent slopes. This is lion is the most common. Barnyard manure and com- a moderately deep, well drained soil on plains at eleva- cial fertilizer are needed for top yields. tions of 4,850 to 5,200 feet. It formed in residuum from his soil is well suited to winter wheat, barley, and shale. Included in mapping are small areas of soils that ;hum if it is summer fallowed in alternate years. have shale deeper than 40 inches. ter wheat is the principal crop. The predicted average Typically the surface layer is grayish brown clay loam d is 33 bushels per acre. If the crop is winterkilled, about 9 inches thick. The subsoil is grayish brown and Ing wheat can be seeded. Generally precipitation is too pale brown clay loam about 14 inches thick. The sub- for F --eficial use of fertilizer. stratum is pale brown clay loam. Shale is at a depth of tubb. .mlch farming, striperopping, and minimum til- about 32 inches. e are needed to control soil blowing and water erosion. Permeability is slow. Available water capacity is 'racing also may be needed to control water erosion. moderate. The effective rooting depth is 20 to 40 inches. the potential native vegetation is dominated by Surface runoff is medium, and the erosion hazard is stern wheatgrass. Blue grama, switchgrass, sand moderate. ;dgrass, big bluestem, slender wheatgrass, indiangrass, This soil is suited to most of the irrigated crops corn- green needlegrass are also present. Potential produc- monly grown in the area, but the high clay content and n ranges from 3,000 pounds per acre in favorable years moderate depth of the soil slightly restrict some crops. A 2,000 pounds in unfavorable years. As range condition suitable cropping system is corn, corn for silage, barley, 3 teriorates, the tall grasses decrease, blue grama and to 4 years of alfalfa, and wheat. This soil is also well ffalograss increase, and forage production drops. Un- suited to irrigated pasture. table weeds and annuals invade and erosion can occur Furrows can be used in irrigating row crops. Flooding range condition becomes poorer. from contour ditches is suitable for close grown crops and Management of vegetation on this soil should be based pasture. Production can be maintained by applying bar- taking half and leaving half of the total annual produc- nyard manure and commercial fertilizer. Keeping tillage an.Seeding is desirable if the range is in poor condition. to a minimum and utilizing crop residue are important. testers wheatgrass, switchgrass, sand reedgrass, In nonirrigated areas this soil is suited to winter wheat, deoats grama, pubescent wheatgrass, intermediate barley, and sorghum. Most of the acreage is planted to heatgrass, and blue grama are suitable for seeding. The winter wheat. The predicted average yield is 25 bushels rass selected should meet the seasonal requirements of per acre. The soil is summer fallowed in alternate years vestock. It can be seeded into a firm, prepared seedbed. to allow moisture accumulation. Generally precipitation is grass drill should be used. Seeding early in spring has too low for beneficial use of fertilizer. 'oven most successful. Stubble mulch farming, striperopping, and minimum til- Windbreaks and environmental plantings are generally lage are needed to control soil blowing and water erosion. suited to this soil. Soil blowing, the principal hazard in The potential native vegetation is dominated by stablishing trees and shrubs, can be controlled by cul- western wheatgrass and blue grama. Buffalograss is also avating only in the tree row and by leaving a strip of present. Potential production ranges from 1,000 pounds vegeU between the rows. Supplemental irrigation per acre in favorable years to 600 pounds in unfavorable 970200 Ilk cl1ii 38 SOIL SURVEY years. As range condition deteriorates, a blue grama-buf- Closely spaced contour ditches can be used in irriga falograss sod forms. Undesirable weeds and annuals in- close grown crops. Contour furrows should be used vade the site as range condition becomes poorer. row crops. Applications of barnyard manure and corn. Management of vegetation on this soil should be based cial fertilizer help to maintain good production. Kee on taking half and leaving half of the total annual produc- tillage to a minimum and utilizing crop residue are in tion. Range pitting can reduce runoff. Seeding is desirable tant. if the range is in poor condition. Western wheatgrass, The potential native vegetation is dominated blue grama, sideoats grama, buffalograss, pubescent western wheatgrass and blue grama. Iuffalograss is wheatgrass, and crested wheatgrass are suitable for seed- present. Potential production ranges from 1,000 po ing. The grass selected should meet the seasonal require- per acre in favorable years to 600 pounds in unfavn ments of livestock. It can be seeded into a clean, firm Years. As range condition deteriorates, a blue grama sorghum stubble, or it can be drilled into a firm prepared falograss sod forms. Undesirable weeds and annual seedbed. Seeding early in spring has proven most success- vade the site as range condition becomes poorer. ful. Management of vegetation on this soil should be 1 Windbreak and environmental plantings are generally on taking half and leaving half of the total annual pn not suited to this soil. Onsite investigation is needed to tion. Range pitting can reduce runoff. Seeding is desi if the range is in poor condition. Western wheatg determine if plantings are feasible. Supplemental water is needed for successful plantings. blue grama, sideoats grama, buffalograss, pube Wildlife is an important secondary use of this soil. The wheatgrass, and crested wheatgrass are suitable for ing. The grass selected should meet the seasonal rec cropland areas provide favorable habitat for ring-necked ments of livestock. It can be seeded into a clean, pheasant and mourning dove. Many nongame species can sorghum stubble, or it can be drilled into a firm prey be attracted by establishing areas for nesting and escape seedbed. Seeding early in spring has proven most sue cover. For pheasant, undisturbed nesting is essential and ful. should be included in plans for habitat development, espe- Windbreaks and environmental plantings are gent cially in areas of intensive agriculture. Rangeland wildlife, not suited to this soil. Onsite investigation is need for example, the pronghorn antelope, can be attracted by determine if plantings are feasible. Supplemental wa developing livestock watering facilities, managing needed for successful plantings. livestock grazing, and reseeding where needed. Wildlife is an important secondary use of this soil This soil has poor potential for urban uses and only cropland areas provide favorable habitat for ring-m moderate potential for recreational development. The pheasant and mourning dove. Many nongame specie chief limiting features are the underlying shale, the low be attracted by establishing areas for nesting and e strength, and the moderate to high shrink swell. These cover. For pheasants, undisturbed nesting cover is e features present severe problems in dwelling and road da• l and should be included in plans for habitat deN construction and in use of septic tank absorption fields ment, especially in areas of intensive agriculture. R t.nd sewage lagoons. Capability subclass Ills irrigated, land wildlife, for example, the pronghorn antelope, c Ve nonirrigated; Clayey Plains range site. attracted by developing livestock watering fad 57—Renohill clay loam, 3 to 9 percent slopes. This is managing livestock grazing, and reseeding where nee a moderately deep, well drained soil on upland hills and This soil has poor potential for urban and recrea ridges at elevations of 4,850 to 5,200 feet. It formed in development. The chief limiting features are the un, residuum from shale. Included in mapping are small areas ing shale, the low strength, and the moderate to of soils that have shale deeper than 40 inches. shrink swell. These features present severe proble Typically the surface layer is grayish brown clay loam dwelling and road construction and in use of septic about 9 inches thick. The subsoil is grayish brown and absorption fields and sewage lagoons. Capability su pale brown clay loam about 12 inches thick. The sub- IVe irrigated, VIe nonirrigated; Clayey Plains range stratum is pale brown clay loam. Shale is at a depth of 58—Shingle loam, 1 to 3 percent slopes. This is a about 29 inches. low, well drained soil on plains at elevations of 4,f Permeability is slow. Available water capacity is 5,200 feet. It formed in residuum from shale. Inclue moderate. The effective rooting depth is 20 to 40 inches. mapping are some small areas of shale and sandston Surface runoff is medium to rapid, and the erosion hazard crops. is moderate. Typically the surface layer is grayish brown loam This soil is suited to limited cropping. Intensive 6 inches thick. The underlying material is light yell cropping is hazardous because of erosion. The cropping brown clay loam. Shale is at a depth of about 18 inch system should be limited to such close grown crops as al- Permeability is moderate. Available water capac falfa, wheat, and barley. The soil also is suited to ir- low. The effective rooting depth is 10 to 20 inches rigated pasture. A suitable cropping system is 3 to 4 face runoff is medium, and the erosion hazard is low years of alfalfa followed by 2 years of corn and small This soil is suited only to limited cropping. A su grain and alfalfa seeded with a nurse crop. cropping system is 3 to 4 years of alfalfa and 2 ye- 970200 r: 38 SOIL SURVEY years. As range condition deteriorates, a blue grama-buf- Closely spaced contour ditches can be used in irrigating £ g falograss sod forms. Undesirable weeds and annuals in- close grown crops. Contour furrows should be used for .1 1 vade the site as range condition becomes poorer. row crops. Applications of barnyard manure and commer I Management of vegetation on this soil should be based cial fertilizer help to maintain good production. Keeping , i on taking half and leaving half of the total annual produc- tillage to a minimum and utilizing crop residue are impor. tion. Range pitting can reduce runoff. Seeding is desirable tant. if the range is in poor condition. Western wheatgrass, The potential native vegetation is dominated by blue grama, sideoats grama, buffalograss, pubescent western wheatgrass and blue grama. Buffalograss is also `e wheatgrass, and crested wheatgrass are suitable for seed- present. Potential production ranges from 1,000 pounds ing. The grass selected should meet the seasonal require- per acre in favorable years to 600 pounds in unfavorable G ments of livestock. It can be seeded into a clean, firm years. As range condition deteriorates, a blue grama buf T: sorghum stubble, or it can be drilled into a firm prepared falograss sod forms. Undesirable weeds and annuals in vade the site as range condition becomes poorer. seedbed. Seeding early in spring has proven most success- Management of vegetation on this soil should be based ful. on taking half and leaving half of the total annual produe , Windbreak and environmental plantings are generally tion. Range pitting can reduce runoff. Seeding is desirablei not suited to this soil. fea investigation is needed to if the range is in poor condition. Western wheatgrass determine if plantings are feasible. Supplemental water is blue grama, sideoats grama, buffalograss, pubescent -' needed W for swan important plantings. wheatgrass, and crested wheatgrass are suitable for seed- 1y Wildlife is an secondary use of this soil. The ing. The grass selected should meet the seasonal require ,�: ; j cropland areas provide favorable habitat for ring-necked ments of livestock. It can be seeded into a clean, firm pheasant and mourning dove. Many nongame species can sorghum stubble, or it can be drilled into a firm prepared r,l. be attracted by establishing areas for nesting and escape seedbed. Seeding early in spring has proven most success- is e cover. For pheasant, undisturbed nesting is essential and ful. » should be included in plans for habitat development, espe- Windbreaks and environmental • plantings are generally e. cially in areas of intensive agriculture. Rangeland wildlife, not suited to this soil. Onsite investigation is needed to for example, the pronghorn antelope, can be attracted by determine if plantings are feasible. Supplemental water is ₹, developing livestock watering facilities, managing �' I needed for successful plantings. e livestock grazing, and reseeding where needed. Wildlife is an important secondary use of this soil. 1h� , This soil has poor potential for urban uses and only cropland areas provide favorable habitat for ring-necked moderate potential for recreational development. The pheasant and mourning dove. Many nongame species can �` chief limiting features are the underlying shale, the low be attracted by establishing areas for nesting and escape 1 i, strength, and the moderate to high shrink swell. These cover. For pheasants, undisturbed nesting cover is esscn K features present severe problems in dwelling and road tial and should be included in plans for habitat develop If: 3 construction and in use of septic tank absorption fields ment, especially in areas of intensive agriculture. Range- cs". and sewage lagoons. Capability subclass Ills irrigated, land wildlife, for example, the pronghorn antelope, can be pp; I I M- onirrigated; Clayey Plains range site. attracted by developing livestock watering facilities, t:. 3 cal Renohill clay loam, 3 to 9 percent slopes. This is managing livestock grazing, and reseeding where needed i, a moderately deep, well drained soil on upland hills and This soil has poor potential for urban and recreational i ridges at elevations of 4,850 to 5,200 feet. It formed in development. The chief limiting features are the underlp ,` residuum from shale. Included in mapping are small areas ing shale, the low strength, and the moderate to high 31. of soils that have shale deeper than 40 inches. shrink swell. These features present severe problems in Vhhh.: Typically the surface layer is grayish brown clay loam dwelling and road construction and in use of septic tank Se about 9 inches thick. The subsoil is grayish brown and absorption fields and sewage lagoons. Capability subclass >, pale brown clay loam about 12 inches thick. The sub- IVe irrigated, VIe nonirrigated; Clayey Plains range site. stratum is pale brown clay loam. Shale is at a depth of 58—Shingle loam, 1 to 3 percent slopes. This is a shal- about 29 inches. low, well drained soil on plains at elevations of 4,850 to Permeability is slow. Available water capacity is 5,200 feet. It formed in residuum from shale. Included in g. moderate. The effective rooting depth is 20 to 40 inches. mapping are some small areas of shale and sandstone out- i h Surface runoff is medium to rapid, and the erosion hazard crops. f is moderate. Typically the surface layer is grayish brown loam about 3 This soil is suited to limited cropping. Intensive 6 inches thick. The underlying material is light yellowish s, cropping is hazardous because of erosion. The cropping brown clay loam. Shale is at a depth of about 18 inches. system should be limited to such close grown crops as al- Permeability is moderate. Available water capacity is j falfa, wheat, and barley. The soil also is suited to ir- low. The effective rooting depth is 10 to 20 inches. Sue- {,', rigated pasture. A suitable cropping system is 3 to 4 face runoff is medium, and the erosion hazard is low. years of alfalfa followed by 2 years of corn and small This soil is suited only to limited of and 2 years icropping. A suitable cropping grain and alfalfa seeded with a nurse crop. pP g system is 3 to 4 years 970200 r JRVEY WELD COUNTY, COLORA production ranges from 1,750 pounds per acre in favora- The potential native vegetation on this range site is ble years to 950 pounds in unfavorable years. As range dominated by sand bluestem, sand reedgrass, and blue cor-uion deteriorates, the sideoats grama, little bluestem, grama. Needleandthread, switchgrass, sideoats grama, ant .and reedgrass decrease; yucca, sedge, and blue and western wheatgrass are also prominent. Potential grama increase; and forage production drops. production ranges from 2,200 pounds per acre in favora- Management of vegetation should be based on taking ble years to 1,800 pounds in unfavorable years. As range half or less of the total annual production. Deferred graz- condition deteriorates, the sand bluestem, sand reedgrass, ing is practical in improving range condition. Seeding and and switchgrass decrease and blue grama, sand dropseed, mechanical treatment are impractical. and sand sage increase. Annual weeds and grasses invade Windbreaks and environmental plantings are generally the site as range condition becomes poorer. not suited to this soil. Onsite investigation is needed to Management of vegetation on this soil should be based determine if plantings are feasible. on taking half and leaving half of the total annual produc- Production of vegetation on this treeless soil is low, tion. Seeding is desirable if the range is in poor condition. especially during drought, when annual production can be Sand bluestem, sand reedgrass, switchgrass, sideoats as low as 300 pounds per acre. Rangeland wildlife, such as grama, blue grama, pubescent wheatgrass, and crested antelope and scaled quail, can be attracted by managing wheatgrass are suitable for seeding. The grass selected livestock grazing, installing livestock watering facilities, should meet the seasonal requirements of livestock. It can and reseeding where needed. be seeded into a clean, firm sorghum stubble or it can be This soil has poor potential for urban development. The drilled into a firm prepared seedbed. Seeding early in chief limiting feature is the shallow depth to sandstone. spring has proven most successful. Capability subclass VIe irrigated, VIe nonirrigated; Sand- Windbreaks and environmental plantings are generally st••• Breaks range site. not suited to this soil. Onsite investigation is needed to CDTerry fine sandy loam, 0 to 3 percent slopes. This determine if plantings are feasible. is a moderately deep, well drained soil on plains at eleva- tions of 4,500 to 5,000 feet. It formed in residuum from a cropland areas provide favorable habitat for ring-necked sandstone. Included in mapping are small areas of soils pheasant and mourning dove. Many nongame species can d that have sandstone deeper than 40 inches. Also include be attracted by establishing areas for nesting and escape are small areas of soils that have a subsoil of sandy clay cover. For pheasants, undisturbed nesting cover is essen- loam and clay loam. Typically the surface layer of this Terry soil is pale 1 tial and should be included in plans for habitat develop- brown fine sandy loam about 6 inches thick. The subsoil is ment, especially in areas of intensive agriculture. Range- land wildlife, for example, the pronghorn antelope, can be pal, .own fine sandy loam about 21 inches thick. The attracted by developing livestock watering facilities, substratum is very pale brown fine sandy loam. Sand- stone is at a depth of about 37 inches. managing livestock grazing, and reseeding where needed. The underlying sandstone is the most limiting feature Permeability is moderately rapid. Available water capacity is moderate. The effective rooting depth is 20 to of this soil. Neither septic tank absorption fields nor sewage lagoons function properly. Site preparation for 40 is inches. Surface runoff is slow, and the erosion hazard dwellings is costly. Enviornmental and beautification is low. This soil is suited to most of the irrigated crops corn- plantings of trees and shrubs can he difficult to establish. monly grown in the area. The moderate depth restricts Potential is good, however, for such recreational develop- some crops. A suitable cropping system is corn, corn for ment as camp and picnic areas and playgrounds. Capabili- silage, barley, 3 to 4 years of alfalfa, and wheat. This soil ty subclass IVe irrigated, IVe nonirrigated; Sandy Plains is also well suited to irrigated pasture. range site. Furrows or sprinklers can be used in irrigating row 63—Terry fine sandy loam, 3 to 9 percent slopes. This crops. Flooding from contour ditches and sprinkling are is a moderately deep, well drained soil on plains at eleva- suitable in irrigating close grown crops and pasture. Small tions of 4,500 to 5,000 feet. It formed in residuum from heads of water and short runs reduce the risk of erosion. sandstone. Included in mapping are small areas of soils Production can be maintained by frequent irrigations and that have sandstone deeper than 40 inches. Also included by applications of barnyard manure and commercial fertil- are small areas of soils that have a sandy clay loam and izer. Keeping tillage to a minimum and utilizing crop clay loam subsoil. residue are important. Typically the surface layer of this Terry soil is pale In nonirrigated areas this soil is suited to winter wheat, brown fine sandy loam about 6 inches thick. The subsoil is barley, and sorghum. Most of the acreage is planted to pale brown fine sandy loam about 18 inches thick. The winter wheat. The predicted average yield is 25 bushels substratum is fine sandy loam. Sandstone is at a depth of per acre. The soil is summer fallowed in alternate years about 32 inches. to allow moisture accumulation. Generally precipitation is Permeability is moderately rapid. Available water too low for beneficial use of fertilizer. capacity is moderate. The effective rooting depth is 20 to Stubble mulch farming, striperopping, and minimum til- 40 inches. Surface runoff is medium to rapid, and the ero- lage are needed to control soil blowing and water erosion. sion hazard is moderate. 970290 WELD COUNTY, COLORADO, SOUTHERN PART 47 be attracted by establishing areas for nesting and escape wheatgrass are suitable for seeding. The grass selected _cover. For pheasants, undisturbed nesting cover is essen- should meet the seasonal requirements of livestock. It can ial and should be included in plans for habitat develop- be seeded into a clean, firm sorghum stubble, or it can be ment, especially in areas of intensive agriculture. Range- drilled into a firm prepared seedbed. Seeding early in land wildlife, for example, the pronghorn antelope, can be spring has proven most successful. attracted by developing livestock watering facilities, suited Windbreaks said enBlvironmental mental plantings w available fairly well managing livestock grazing, and reseeding where needed. er This soil has good potential for urban and recreational capacity are the principal hazards in establishing trees development. Once established, the lawns, shrubs, and and shrubs. The soil is so loose that trees should be trees grow well. The chief limiting soil feature is the planted in shallow furrows and vegetation maintained rapid permeability in the substratum, which causes a between the rows. Supplemental irrigation may be needed to insure survival. Trees that are best suited and have lagoons.a n of ground water development conden from limited sew by good survival are Rocky Mountain juniper, western the In places recreational silws . Capability is at leby redcedar, ponderosa pine, and Siberian elm. The shrubs the susceptibility itot soil blowing. Plains r y subclass IIIe best suited are skunkbush sumac, lilac, and Siberian i�ated, IVe nonirrigated; Sandy Plains range site. Vona loamy sand, 3 to 5 percent slopes. This is a pc.atihrub. `Wildlife is an important secondary use of this soil. The deep, somewhat excessively drained soil on plains and cropland areas provide favorable habitat for ring-necked high terraces at elevations p 4,600 to ed5, in0 feet. It P formed in eolian or alluvial deposits. Included in mapping pheasant and mourning dove. Many nongame species can be attracted by establishing areas for nesting and escape are some leveled areas. Also included are small areas of cover. For pheasants, undisturbed nesting cover is essen- soils that have a loamy substratum and some areas of tial and should be included in plans for habitat develop- soils that are noncalcareous a to a depth of 60 inches. ment, especially in areas of intensive agriculture. Range- Typically the surface layer of this Vona soil is grayish land wildlife, for example, the pronghorn antelope, can be brown. The upper 6 inches is loamy sand and the lower 5 attracted by developing livestock watering facilities, inches is fine sandy loam. The subsoil is brown and light managing livestock grazing, and reseeding where needed. yellowish brown fine sandy loam about 14 inches thick. This soil has good potential for urban and recreational The substratum to a depth of 60 inches is sandy loam. development. Once established, the lawns, shrubs, and Permeability is moderately rapid. Available water trees grow well. The primary limiting soil feature is the capacity is moderate. The effective rooting depth is 60 rapid permeability in the substratum, which causes a -- inches or more. Surface runoff is slow, and the erosion hazard of ground water contamination from sewage aazard is low. lagoons. In places recreational development is limited by This soil is suited to limited cropping. Intensive the susceptibility to soil blowing. Capability subclass IVe cropping is hazardous because of soil blowing. The irrigated, VIe nonirrigated; Sandy Plains range site. cropping system should be limited to such close grown 74—Vona loamy sand, 5 to 9 percent slopes. This is a crops as alfalfa, wheat, and barley. The soil is also suited deep, somewhat excessively drained soil on plains at to irrigated pasture. A suitable cropping system is 3 to 4 elevations of 4,600 to 5,200 feet. It formed in eolian years of alfalfa followed by 2 years of corn and small deposits. Included in mapping are small areas of soils that grain and alfalfa seeded with a nurse crop. have a loamy substratum and areas of soils that are non- Closely spaced contour ditches or sprinklers can be calcareous to a depth of 60 inches. used in irrigating close grown crops. Contour furrows or Typically the surface layer is grayish brown. The upper spinklers should be used for new crops. Application of 6 inches is loamy sand and the lower 4 inches is fine barnyard manure and commercial fertilizer helps to main- sandy loam. The subsoil is brown and light yellowish tam good production. brown fine sandy loam about 12 inches thick. The sub- The potential native vegetation on this range site is stratum to a depth of 60 inches is loamy sand. dominated by sand bluestem, sand reedgrass, and blue Permeability is moderately rapid. Available water grama. Needleandthread, switchgrass, sideoats grama, capacity is moderate. The effective rooting depth is 60 and western wheatgrass are also prominent. Potential inches or more. Surface runoff is medium, and the erosion production ranges from 2,200 pounds per acre in favora- hazard is low. ble years to 1,800 pounds in unfavorable years. As range The potential native vegetation on this range site is condition deteriorates, the sand bluestem, sand reedgrass, dominated by sand bluestem, sand reedgrass, and blue and switchgrass decrease and blue grama, sand dropseed, grama. Needleandthread, switchgrass, sideoats grama, and sand sage increase. Annual weeds and grasses invade and western wheatgrass are also prominent. Potential the site as range condition becomes poorer. production ranges from 2,200 pounds per acre in favora- Management of vegetation on this soil should be based ble years to 1,800 pounds in unfavorable years. As range on taking half and leaving half of the total annual produc- condition deteriorates, the sand bluestem, sand reedgrass, tion. Seeding is desirable if the range is in poor condition. and switchgrass decrease and blue grama, sand dropseed, Sand bluestem, sand reedgrass, switchgrass, sideoats and sand sage increase. Annual weeds and grasses invade grama, blue grama, pubescent wheatgrass, and crested the site as range condition becomes poorer. 970200 f WELD COUNTY, COLOR URVEY Windbreaks and environmental plantings are generally shrubs best suited are skunkbush sumac, lilac, and Siberi- suited to this soil. Soil blowing, the principal hazard in an peashrub. e: lishing trees and shrubs, can be controlled by cul- Wildlife is an important secondary use of this soil. The tivating only in the tree row and by leaving a strip of cropland areas provide favorable habitat for ring-necked vegetation between the rows. Supplemental irrigation pheasant and mourning dove. Many nongame species can may be necessary at the time of planting and during the be attracted by establishing areas for nesting and escape dry periods. Trees that are best suited and have good cover. For pheasants, undisturbed nesting cover is essen- survival are Rocky Mountain juniper, eastern redcedar, tial and should be included in plans for habitat develop- ponderosa pine, Siberian elm, Russian-olive, and hackber- ment, especially in areas of intensive agriculture. Range- ry. The shrubs best suited are skunkbush sumac, lilac, and i land wildlife, for example, the pronghorn antelope, can be Siberian peashrub. attracted by developing livestock watering facilities, Wildlife is an important secondary use of this soil. managing livestock grazing, and reseeding where needed. Ring-necked pheasant, mourning dove, and many non- This soil has good potential for urban and recreational game species can be attracted by establishing areas for development. Lawns, shrubs, and trees grow well. The nesting and escape cover. For pheasants, undisturbed only limiting feature is the rapid permeability in the sub- nesting cover is essential and should be included in plans stratum, which causes a hazard of ground water con- for habitat development, especially in areas of intensive tamination from sewage lagoons. Capability subclass IIe agriculture. irrigated; IVe nonirrigated; Sandy Plains range site. This soil has good potential for urban and recreational 77—Vona sandy loam, 3 to 5 percent slopes. This is a development. Lawns, shrubs, and trees grow well. The deep, well drained soil on plains at elevations of 4,600 to only limiting feature is the rapid permeability in the sub- 5,200 feet. It formed in eolian deposits. Included in stratum, which causes a hazard of ground water con- mapping are small areas of soils that have a loamy sub- tamination from sewage lagoons. Capability subclass 'Is stratum and areas of soils that are noncalcareous to a it •ted. depth of 60 inches. 10 Vona sandy loam, 1 to 3 percent slopes. This is a Typically the surface layer of this Vona soil is grayish d•• ., well drained soil on plains and high terraces at brown sandy loam about 8 inches thick. The subsoil is elevations of 4,600 to 5,200 feet. It formed in eolian and brown fine sandy loam about 15 inches thick. The sub- alluvial deposits. Included in mapping are some leveled stratum to a depth of 60 inches is sandy loam. areas. Also included are small areas of soils that have a Permeability is moderately rapid. Available water lov--v substratum and areas of soils that are noncalcare- capacity is moderate. The effective rooting depth is 60 01. ) a depth of 60 inches. inches or more. Surface runoff is medium, and the erosion Typically the surface layer of this Vona soil is grayish hazard is low. brown sandy loam about 10 inches thick. The subsoil is In irrigated areas this soil is suited to the crops com- brown fine sandy loam about 18 inches thick. The sub- monly grown in the area. Perennial grasses and alfalfa or stratum to a depth of 60 inches is sandy loam. close grown crops should be grown at least 50 percent of Permeability is moderately rapid. Available water the time. Contour ditches and corrugations can be used in capacity is moderate. The effective rooting depth is 60 irrigating close grown crops and pasture. Furrows, con- inches or more. Surface runoff is slow, and the erosion tour furrows, and cross slope furrows are suitable for row hazard is low. crops. Sprinkler irrigation is also desirable. Keeping til- In irrigated areas this soil is suited to all crops com- lage to a minimum and utilizing crop residue help to con- monly grown in the area, including corn, sugar beets, trol erosion. Maintaining fertility is important. Crops beans, alfalfa, small grain, and onions. An example of a respond to applications of phosphorus and nitrogen. suitable cropping system is 3 to 4 years of alfalfa fol- In nonirrigated areas this soil is suited to winter wheat, lowed by corn, corn for silage, sugar beets, small grain, or barley, and sorghum. Most of the acreage is planted tc beans. Land leveling, ditch lining, and installing pipelines winter wheat. The predicted average yield is 28 bushel: are needed for proper water applications. per acre. The soil is summer fallowed in alternate year: All methods of irrigation are suitable, but furrow ir- to allow moisture accumulation. Generally precipitation h rigation is the most common. Barnyard manure and com- too low to make beneficial use of fertilizer. mercial fertilizer are needed for top yields. Mulch farming, striperopping, and minimum tillage an 'Windbreaks and environmental plantings are generally needed to control soil blowing and water erosion. Terrac suited to this soil. Soil blowing, the principal hazard in ing also may be needed to control water erosion. establishing trees and shrubs, can be controlled by cul- The potential native vegetation on this range site is tivating only in the tree row and by leaving a strip of dominated by sand bluestem, sand reedgrass, and blu, vegetation between the rows. Supplemental irrigation grama. Needleandthread, switchgrass, sideoats grams may be necessary at the time of planting and during dry and western wheatgrass are also prominent. Potentia periods. Trees that are best suited and have good survival production ranges from 2,200 pounds per acre in favora are Rocky Mountain juniper, eastern redcedar, ponderosa ble years to 1,800 pounds in unfavorable years. As rang pi' Siberian elm, Russian-olive, and hackberry. The condition deteriorates, the sand bluestem, sand reedgras: 970200 Hello