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• ~IBIT I <br />' <br /> /J (Cont <br />d) <br /> <br /> Terrace Escarpments <br /> GRAVEL HREARS RAYGE SITE <br /> Terrace escarpments fTcl occur as breaks or steep The soils of this range site contain graccl that per• <br /> side slopes adjacent to the channels of present or former mits rapid infiltr:dion of water- Becausr_ of the gravel, <br /> streams. The>' also occur as the steep faces of terrace_ hotverer, moishlrc holding properties arc fair to low. ~ <br /> that border bottom lands and flood plains. <br />' This land t}'pe c.•onsists of allurinm of satiable materials The soils dr}' out rapidl}-, and, for this reason, plants <br /> and is rerr shallop over graccl and sand. These materials flaring a root s}'stem that reaches into a large area of soli <br /> hate a loamy sand or sand}- loam surface lacer. In moat are best adapred. The soils on this site are gently' sloping <br /> areas this lacer is 5 to 20 percent graccl. Shale and sand- to steep. - <br />Sule-oats <br />rama <br />little hluestem <br />and needle-and- <br />' stone outcrops are in some areas. Included in ma Piping are g <br />, <br />, <br />thread are the donnuant grasses on this. site <br />but prairie-' <br /> yery small areas of a Vona ]oamr sand, a Vona sandy loam. <br />~ , <br />clover is common. All of these plants arc decreasers. <br /> and a Daco»o loam, all good soils for fanning. Blue grama, bail;y grama. and Indian ricegrass are <br />' The s»rface layer caries in reaction from place to <br />i <br />' common increasers. Other increasers of less importance <br />5t <br />dOt <br />ar <br />'1t 11 <br />C <br />bll <br />kwh <br />d <br />t f <br />R <br /> s cnlc•;u <br />cous. Slopes differ tcidc•1) <br />place and in places , <br />~e <br />, <br />e <br />e <br />C <br />e <br />~ <br />' <br />k <br />C <br />811 <br />' <br />` <br /> within short distances and rinse from 1 to SO percent. 1CC.a <br />Slla <br />e\ <br />CCd <br />(1 <br />Oits <br />` <br />r <br /> <br />$omc areas are used for grazing, but the soils arc.tno ~ <br />; <br />hen this site is in excellent condition. the total <br /> <br />or too unshlblc for culticafion or <br />too shallop' annual}field of air-dl.r herhaRe ranges from 750 ,ounds <br />t 1 <br /> , <br />steep, <br />d toss management. <br />o Per acre to 1200 pounds both in unfavorable and farm•- <br /> g <br />\fu ~ of this land type is ral,idh• being mined for able rears. about f10 percent of the total annual cield' <br /> and and graccl, and thcrcafter is not usable for farm- comes from plants that provide forage for cattle. <br /> s <br />ing. Such ai'CaS al'C »SCd :IS a dUlnplllg 'DTOII»d Or are <br />back filled Icith better soil material m places. Many TREE PLANTINr. sL'ITABI LITY CROUP ~ <br /> <br />s Of this land t}'pC ai'e p'cll s171tCd t0 hm15111g OI' <br />' This trot cnnsisls of coils that are R!'i1Cra114 1111- <br />g P ~ <br /> ea <br />ai <br />dustrial developments or hirlllra}• location. Prior to <br />i far~l'nblc m• unsuitable for trees because of Duo a orate, <br />' <br /> n <br />use for these purposes, holaccer, the stabilit} Df the soils hesc limitations :ur ;nlinity, ell:alinitrJ <br />linutatimis. 1 <br /> hrnlld be dctermmed because of slope or lack of binder slope. cvosslrc ~~ctuess. pool' acrnhnn, cobblrstnncs. <br /> s <br />soil particles. The soils uormalh' hate Rood bearing gravel. shnllop'ness, love ayailahle moishne capacrt}, and <br /> capacit.}' for foundations, lop' shrinl:-swell properties. Irnfarorable texhnr such ns dune sand or rer~' hence sine. <br />' mood natural drainase, and a ]op hazard of hcdrolcsis Trees are not commalh' desired or planted on soils of this <br /> for hurled metal pipe. Open ditches for transporting g'O17P• <br /> patcrarenotsuited because of rapidscepage. Some small areas of soils in this groan ;nr satisfactory <br /> 7n some areas lawns and gardens p'ould pace to be for trees in places. Other soils can be unproved by pro- <br />l <br /> built up. usvtg better soil materials from other areas. ucmg <br />v'iding bCttCl' dl'alllage. be ll51nQ salt- OC alkali-rer <br /> in some areas, old gravel Alts hace been nscd as dump P'"'dices. and b}• applyine similar measures. <br /> areas. then packed and filled n'ith o»tsidr soil materials. Onsite inccsti=anon is nreded on the soils of this grmlp <br /> and then developed for homrsites. Copal lilt} unit t'IIc- before trees arc planted. assistance can he obtained br <br />' 3, nonn•rlgated; Gravel Breaks range site: tree planting co»tacting the local office of the Soil Conscrrahon Scrrlce. <br /> sultabilit.y group 4. <br /> <br />' CAP.ABI LITY UNIT VIIH, NDNIRRIGAr ED <br />This unit consists only of Gullied land. This land <br /> absorbs pater at a moderate to slow rate, and the acail- <br /> ablc Icatcr cip;uit~~ is low to medium. Soule stored water <br /> i; not arailablc to plants. <br />' -\reas of tl>;s mapping trait hace been severeh' daut- <br /> a~ed by sully and sheet erosion. The seals ul these <br /> stronoh sloping shales hace, begun healing under ,Dori <br /> management and favorable moisture perioil; to such <br /> extent that a fair to good _rass cosec Is becomlm_ re- <br /> established. \o»e of this land type Is sortable for eulti- <br /> ratiolt. It has fair to good potential as Rrassland. \bt- <br />' shiners gencrallc cannot be used for seedbed prep:u'a- <br />tion. because the areas arc too rou~~h or too steep. Some <br /> pater dicersrons can be placed at the upper ends of the <br /> shales to help remote the hazard of ;nll}im*. <br /> Sererc rrsh'ictions nn sr:v.in~~. as 1ve11 as tiuteh• graz- <br /> in~, help to restore :t better st:unl of »:ttire grasses [o <br /> form a much needed sod corer. <br />t <br />' 48 <br />