|
+ ~ • Af UItUAN CUUI
<br />wuslcru p:u•L of lhu wooly, wore ;uu:u of Slouuhum loony
<br />3 l0 5 portent slopes, Ihat melee np ns much as 10 potcent
<br />uC ;uty :u•ea mapped, and sutull uruLS of Vuna suudy loom,
<br />:3 to 5 percent slopes.
<br />Lt cultiratecl fiords soil blowing agdwatar erosion are
<br />tho major hnrards. Wind stripctepping pr stubblo mulgh-
<br />iugbrlpscuuLrulcr,winniudryl',u•utod;ue:is. J:rt~.iuucun
<br />bu rontrolled iu irrigated fields by pralucing small groin
<br />~,~• hay. capabirly nail l lle-12 (u•rlguLcd), IVo-2 (dry-
<br />]:utd) ;Sandy Plains rungo site. .:
<br />Ascalon sandy loam, 5 to 9 percent slopes (AuD).-'1'Itis
<br />veil occnlw uu uplands LhruugLout tho county. bfosC arous
<br />:u~u in range, bnl sumo sutull areas arc dryfurmed or ir-
<br />rigaled.
<br />I'ho snrL•wo layer and Lho snbsoil aro normally slightly
<br />Lhinmv Ih:ut Lh,ne uC Ascalon sandy luauy :I Co G pur-
<br />cent slopes. ht most places limo occnts at a depth of 10
<br />ur l l inuha~, bat il. is only 7 ur 8 iuthas from tho sut•fuco
<br />iu mcxlmutoly cr«lud amts.
<br />]nrludtxl in utapping were :u•c;t of Vonn sandy loam,
<br />:, to ~ portent slolxs, and of Stoneham loam, 5 to 12
<br />pm•ttut slopes. Tho Vona soil ntalcas up us much as 10
<br />percent of any area mappod in tdto north-central and
<br />nnrthc:LSforn p:u•ts of t.hn county and is in smell areas in
<br />rho uurLhu•ushu•u p;trt. Tho Slouuham soil makes up as
<br />notch ns 5 prrcrut. of any wren nutpped in the northwest-
<br />uru p:u•t of Lhc colud.y.
<br />tioil blowing and walrr erosion aro socials hazards in
<br />rnll.iv;dnd meax, Tu dryf:u•nmd fields stubblo mulching
<br />hrll~s wnlrul urosiun. Erosion can bo contro11oi1 itt irrt-
<br />g:dod a:7+as by aceding pl:uds for pustnro ur bay: Ca-
<br />pubilily unit 1Vu-1'G (u•rigated), IVa-8 (dt•yluncl);
<br />Sandy Plains r:utgo site. -
<br />Asculon-Plainer sandy foams, 1 Eo 5 percent slopes
<br />(AvBI•=1'haso soils occur m}:lplnnds, mostly in tho na•t.h-
<br />rasloru part of Lho a,nul.y. 1'bey aro so mtormingled
<br />that oath soil was not map}tocl'snparately. The,Ascalon
<br />sandy loam melees np 70 pa•ticltt or more of tho mapping
<br />unit and is similar to Ascalon sandy loam, 3 to 5 por-
<br />rnut. slopes. Plal.ncr faun s:mtly latm makes up tho rant.
<br />It a•cnts on slopes of 0 to 3 nemsnt and is similar to
<br />Lho Platner lino sandy loam llescribod for tho Plntner
<br />stria,.
<br />tiuil Llnwing and water omsion are tho main hazards
<br />in cnlLivuWd :ores. au lhu dryfurmrd aroaa wind strip-
<br />cropping and stubblo mulchm~ help control erosion.
<br />Venn of this mappin;,• unit. is irrigated. Capability unit
<br />] Vn-2 (drylnttd) ; Sandy Plains rnngo silo.
<br />Bankard Series
<br />In tbo Bankard sm•ies aro sandy or loamy soils in allu-
<br />vium that was t•ocently dolwsiWd on bottom lands along
<br />Lho m:tjnr stro:uus of the county. 17tese soils ore nearly
<br />level to hummocky and in places are cut by stream chnn-
<br />uals.
<br />'1'hc SUCflICC layer 1'dltgeS firom loam to sand. Sand or
<br />n utixluro of sand and gr;rvel nnderlics the surfaco layer
<br />:tad contains thin discoutiuuous seams of a finer toatured
<br />w:+lcrinl.
<br />1S;mkurd soils ate wall drained to excessively drained.
<br />They absorb canter rapidly ~Mtt havo poor cantor-holding
<br />capacity. 1?lauding from Lho adjacent stroams is lilcoly,
<br />1'1'Y, CULOItAUO
<br />•utd ground cantor is generally within 15 feet of the sur-
<br />face.
<br />Bunkatd soils are mostly iu pustule, but cot•It and
<br />alfalfa ate grotm on the less sandy soils. Yields ate low
<br />because these soils ore shallow and have low water-
<br />holding capacity.
<br />Bankard sandy loam (0 to 3 oteeltt slopes) (Ba).-'Phis
<br />soil occttts on tho bottom lands along tlto South Platte
<br />l:ivor, ]Sijou Cteolc, and liiowa Crcek. Slopes of 1 lxtr-
<br />cent or less aro dominant.
<br />Tho surfaco layer, n'bout 0 to 8 inches thick, is sandy
<br />loam. It is underlain by sand or sand and grovel nt n
<br />dopth of 8 to 15 inches. Tho surface layer is normally
<br />limy, escept iu some nroas along Bijou Crock.
<br />Includod in mapping along tho South Plntto Ilivet•
<br />wcro a few small areas that hove a loam surface layer.
<br />Also included were arc;is tLnt havo a coarse sandy loam
<br />sm•fttco ]uyer.
<br />This soil is not well suited to irt•igation. It is sltnllow
<br />to sand or mixod sand and gravel, and Uooding is lilcoly.
<br />If it is irrigated, suitable crops aro alfalfa ot• nnothet•
<br />closo-growing crop. '17tis soil is not suitablo for dry-
<br />fnuming. Gpnpability unit IVs-12 (itt•igntted), VIw-3
<br />(dt;yland) ; not, clatsstfied as a range sttc.
<br />Bankard soils (0 to G percent slnpns) Iekl.-These. soils
<br />occur mainly on bottom ]ands along tho South Plnlto
<br />ltivor and Bijou Creek.
<br />The surfaco layer is G to 10 inches of light-caroled
<br />sand in uu,st phtu;s, but small uteri of loamy sands
<br />occur. Lxcept ill places along Bijou Creel;, the surfaco
<br />layct• is limy. 79to tutu of wulct• inhtl:e is morn rapid
<br />than that of Bankard sandy loam, and the water-holding
<br />cnracity is lower. Soil blo'+ving is moro lilcoly.
<br />111is soil is +tot suit:tblc for cultivatiolt, becnllsc it is
<br />shallow to sand or mixrll sand and grovel and is sns-
<br />ceptihlo to ffoodutg and to soil blowing. Capability
<br />unit VIIW-1 (drylnnd) ;not classified as n range site.
<br />Bi3ou Series
<br />Tho Bijou series consists of brown, deop to modm•ntely
<br />deop, loamy and sandy soils that formed at terraces in
<br />noltcnlcareous, arkosic alluvium. Tito sttbstrntum vnt•ics
<br />itt texture. Theso soils me normally well drainod Lot aro
<br />excessively drained in places,
<br />The surface layer, about 8 to 17 inches thick, rnn;,rea
<br />from brown to light brown sturdy clay loam to loamy
<br />send. It is iron of limo and easily worked. '1'o rho
<br />daptlt normally plowed, this layer has wen::, fine, gratm-
<br />]ar structuro or is singlo grained, but below plow cleptlt,
<br />it generally has weak, cause, blocky structure. Tito sub-
<br />soil is ibro+m to dark-brown, lime-free sandy loom or
<br />contso sandy loam 10 to 15 inches thick. It ]tns tvenlc to
<br />moderato blocky structure and is very hard •+vhen dry but
<br />friablo when moist. The undot•lyittg mntet•ial is at n
<br />depth of 3G W 50 inches and consists of light yello+vislt-
<br />brown to olivo-brown, lime-free loamy coarse sand and
<br />sand.
<br />Wator is htkon into rho surf;tco layer nt a rapid to
<br />moderate rate, attd its movoment through the subsoil is
<br />rapid. Tito water-holding capacity ranges from ]ow to
<br />moderato. Geuetully, uatutul fertility is moderate. Soil
<br />
|