Laserfiche WebLink
• EXHIBIT "AA" <br />44 <br />SOIL SI3RVEY <br />• <br />to allow moisture accumulation. Generally p ecipitation is <br />too low to make eneficial use of fertilizer. <br />Stubble mule farming, stripcropping, d minimum til- <br />lage are need to control soil blowing d water erosion. <br />Terracing als may be needed to contr water erosion. <br />The pot tial native vegetation is dominated by <br />western w eatgrass and blue gram . Buffalograss is also <br />present. otential production ran es from 1,000 pounds <br />per acr in favorable years to 6 pounds in unfavorable <br />years. s range condition dete ' rates, a blue grams-buf- <br />falo ass sod forms. Undesir le weeds and annuals i - <br />vad the site as range Condit' n becomes poorer. <br />anagement of vegetatio on this soil should be b sed <br />taking half and leaving alf of the total annual p oduc- <br />ion. Range pitting can r ace runoff. Seeding is d sirable <br />if the range is in poo condition. Western w atgrass, <br />blue grams, sideoat grams, buffalograss, ubescent <br />wheatgrass, and cres ed wheatgrass are suits a for seed- <br />ing. The grass sele ed should meet the sea nil require- <br />ments of livestoc It can be seeded int a clean, firm <br />sorghum stubble or it can be drilled into firm prepared <br />seedbed. Seedi early in spring has pro en most success- <br />ful. <br />Windbrea and environmental pl tings of trees and <br />shrubs co only grown in the ar a are generally well <br />suited t this soil. Cultivation o control competin <br />vegetati n should be continued for as many yeazs s <br />possib following planting. Tre s that are best suited nd <br />have oad survival are Rock Mountain juniper, a tern <br />red dar, ponderosa pine, Si Brian elm, Russian-oli a and <br />h berry. The shrvbs bes suited are skunkbus <br />1' ac, Siberian peashrvb, a d American plum. <br />Wildlife is an import t secondary use oft ' soil. The <br />cropland areas provid favorable habitat for 'ng-necked <br />pheasant and mourni g dove. Many nonga species can <br />be attracted by est fishing areas for Wes ng and escape <br />cover. For pheasa ts, undisturbed Westin cover is essen- <br />tial and should included in plans fo habitat develop- <br />ment, especiall in aeeas of intensive griculture. Range- <br />land wildlife, or example, the prong rn antelope, can be <br />attracted b developing livestoc watering facilities, <br />managing 1' estock grazing, and re eeding where needed. <br />This so' has poor potential fo urban and recreatio 1 <br />develop ent. Slow permeabilit and high shrinks ell <br />cause roblems in dwelling a road construction. pa- <br />bility subclass IIIe irrigate IVe nonirrigated; ayey <br />Plaifis range site. <br />68-Ustic Torriorthents, moderately steep. These are <br />deep, excessively drained soils on terrace breaks and <br />escarpments at elevations of 9,450 to 5,100 feet. They <br />formed in gravelly alluvium and have slopes of 9 to 25 <br />percent. Included in mapping are small areas of soils that <br />have pockets of sandy loam and loam in the underlying <br />material. <br />Typically the surface layer is pale brawn gravelly sand <br />about 10 inches thick. The underlying material to a depth <br />of GO inches is pale brown gravelly sand. <br />Permeability is rapid. Avails a water capacity is low. <br />The effective rooting depth is 6 inches or more. Surface <br />runoff is medium, and the erosion hazard is moderate. <br />The potential native vegetation is dominated by little <br />bluestem, sideoats grams, sandy reedgrass, blue grams, <br />hairy grams, switchgrass, and needleandthread. Potential <br />production ranges from 700 pounds per acre in favorable <br />years to 200 pounds in unfavorable years. As range condi- <br />tion deteriorates, the tall and mid grasses decrease, blue <br />grams and hairy grams increas~, and forage production <br />drops. <br />Management of vegetation should be based on taking <br />half or less of the total annual prjoduction. Deferred graz- <br />ing is practical in improving tangle condition. Seeding and <br />mechanical treatment aze impractical. <br />Windbreaks and environmentalplantings generally are <br />not suited to these soils. Onsite i vestigation is needed to <br />determine if plantings are feasible. <br />Wildlife populations are limited because the necessary <br />habitat elements are lacking. Bec~use most of the acreage <br />is rangeland, only rangeland wil~hfe, for example scaled <br />quail and antelope, aze typical. E~(treme care is needed in <br />managing livestock grazing in o , er to provide suitable <br />habitat on these soils. <br />Potential is poor for urban a recreational develop- <br />ment. The chief limiting soil featu~es are the loose, coarse <br />textured soil, steep slopes, and r' id permeability. Capa- <br />bility subclass VIIs irrigated, VI's nonimgated; Gravel <br />Breaks range site. <br />69-Valent and, 0 to 3 perce ~, slopes. This is a deep, <br />amed soil on plai #t elevations of 4,650 <br />It formed in a an~ deposits. Include <br />z small areas of oils hat have lime wit ii <br />inches. <br />excessively <br />sumac, 5,100 feet. <br />~511y the surface <br />thick. The under <br />is brown sand. <br />neability is r it <br />de. The effe~t•iw <br />Surface rvn ff is <br />ayer is. brown sand out S <br />ying material to a de h of 60 <br />Avails ]e water opacity is <br />rooting ~epth is 0 inches or <br />slow, and~the er ion hazard is <br />This soil is suited to limiter <br />cropping is h rdous because of <br />system shoal be limited to such c <br />falfa, wbea and bazley. The soi <br />rigated pa tore. A suitable cropl <br />years of Ifalfa followed by 2 y <br />grain an alfalfa seeded with a <br />Clos y spaced contour ditch o. <br />in ' 'sting close grown crop . Co <br />-ai{iping. Intensive <br />on. The cropping <br />grown crops as al- <br />~o is suited to ir- <br />system is 3 to 9 <br />of corn and sma}f <br />e crop. <br />sprinkers can be <br />tour furrows or <br />kler should be used for ne crop$. Applications bar- <br />ny rd manure and comme ial fertilizer help to aintain <br />g od production. <br />The potential vege lion is dominated y sand <br />bluestem, sand reed ss, switch ass, side is grams, <br />needleandthread, littl bluestem, a d blue ama. Poten- <br />tial production ran es from 2,500 pound per acre in <br />favorable years to ,800 pounds in Unfav ble years. As <br />