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<br />c nic places thou iu others. The substratum is loamy
<br />r ,;,tut ur stratified sanch' ]muu.
<br />fl,i.=. soil cokes in tenter at a sluts to mediwn rule.
<br />crmcabilitr n( the subsoil is rapid. The ttnlcr-holding
<br />~ t pacitt is medium or nturleralely lute, and must of the
<br />J t ,ter held is readily arail+tble ht pbutts. This soil is
<br />,,,Ici;,tclc difficult. lu ease to ]cork, and i4 tuts medium
<br />,IUr;,I fertility.
<br />.]II .d' Ihis soil is irrigated, and the surface hoer tends
<br />~ ~•ct thicker and finer textured us more silt. is reposited.
<br />Jt ~Iruughtiness is to be overcame, [Iris soil needs to be
<br />n,•aled more G'equenllc thou soils that. Mace a finer
<br />~ cxtwed subsoil and substratum. Laud leveling helps
<br />spread the water unifm'nt1y. Barucarri numure wort
<br />__ c•en-nnmure crops help to nwiutuin the cunteut of
<br />J ~~ouic nurtter and to improve filth. Timely tillage of
<br />.is s•.,il is imporGurt, for it precents excessive c•luddiness
<br />~ nl compacting. (Irrigated cupabilit~ unit Its-aj
<br />Kornman clay loam, 1 to 3 percent slopes (KcB).-
<br />hr surl'nce lacer uC this soil is courser textured th;ut that
<br />hornnuut c•Lp' loom, 0 to 1 percent slopes, and this
<br />ail Irns not been quite su deeply silted. In mane oC the
<br />roper wrens, plotting has mixed port of the s:uuly subsoil
<br />tcith the silted sur6tce lacer. \I-titer erosion is sliglu.
<br />73ecause this soil is rb•uu~~lil t, it should be irritated more
<br />f ~equeullg than soils that Luce a finer textured subsoil
<br />' nd subst.ratum. band leveling helps to spread the
<br />~ngatiuu w;tter unifmvdy. Ditches fur trriguUUg close-
<br />_r,nting crops are on a contour. If raw crops are planted
<br />,suss the slope m' nearly un the contour, the Grade of
<br />Lr trrig;,unn furrows is rerluc•ed. Barnc,u'd manure and
<br />_: ~•rn-unroure craps help to nwiutain the content of org:mic•.
<br />,.titer and to improve filth. On this soil tirnelt tillage
<br />-important bemuse it preceuls excessite cluddiness and
<br />~~ntpactin,~. (L'riguted ay]obililt' unit ]Ile-3j
<br />Kornman clay loam, clay substratum, 0 to 1 percent
<br />slopes (KmA).-'I'bis soil is on law terraces along the
<br />lrkuusas 1{fiver. 1G bus a clucet suhsnatum, gener;dlc
<br />u a depth of about 3. inches, but in suave wrens at. a
<br />Iepth of a0 lu 00 inches. Becnu.e of this elacey laym•,
<br />eternal drntnage is slut[ and the water-holding capacity
<br />- ,'seater Ilwn in the Iiornn,an soils Ihat hate a less
<br />I:,wnc sulrsuvtum.
<br />'I'bis soil slnndd be c:u'efully trrt_:,ted su that user-
<br />: ri^_;uiun and srepa~~e ,ue pret'euted. ~ ],and levclin~ helps
<br />„ spread the haler unifurutlt. B:unt:ud manure and
<br />seen-manure e•rups help t.. umiutain the c•nnteut of organic
<br />n ,[ter and to improre tillh. On this sail linu•lt tillage is
<br />wpurLUU hccuttse it preteuls exressitr rlnddiucss and
<br />~;nnpac•liug. (Irrigated rap:,hililr unit ]JJs-I1
<br />Kornman clay loam, sand substratum, 0 to 1 percent
<br />'slopes (KnAj.-'1'I,is coil is un huU om I:uuls nr Lot Irr-
<br />rnces Ihnt are nearer the cl,anurl ul' the :1rl::ur:rs 7{ices
<br />than Ihuse occupied b~ o16cr 1G,rtuu:ni soils. Jts subs,~il
<br />is n~urc slrnliticd Ihuu that ,d the other 1Ganm:ul soils.
<br />liccause Ihis soil has a su hsu~a Una of .uud :nut _ru crl ;N a
<br />,Irlrtl, of 30 I„ :;I. iuchec. intcrn:d draiu;r~e is nturc rapid
<br />;luui IIiaL of 16e less sa udc burn m:n, 5nils, :uul cuusc•-
<br />~urnllc, Ibe unicr-huldiu~ ~npacity is Imc.
<br />This s..il is druu_hlt and Iuscs thf• tenter that pr•nru'alrs
<br />1 ;Irrplt iota its ~•rn relit su L;u anuu: tberefnre, it ureds to
<br />Lr irri~a,lr,l Inure 1'requrutlt and un~rr cnrrCulfc t6:nt sails
<br />r Lai hate a fiurr u•xuurrl .ubs~~il uud su b;u~;u un,. Lund
<br />Ircrlio help: to spread Ihr irri~•uliun o;uer uuifnrullc.
<br />liarntnrd rnnuure and -seen-n,:nwrr crn~N help to nuun-
<br />PISO]{-t:KS COli ST]-, COLOR.4 D0
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<br />loin the content of m'gnnic nurtter noel to ingnvre filth.
<br />On this soil timeh' lilLtge is impm'L•tut because it precents
<br />excessit•ecluddinessunrlcuuywcUng. (lrrigutedc•+ipnbilitr
<br />unit I~-s-1)
<br />Kornman clay loam, wet, 0 l0 2 percent slopes (K WA).-
<br />This soil is distinguished from the other l~nrnm:ur soils be
<br />a iluctuuting realer table nt a depth helots 24 inches.
<br />The tenter table is highest Burin, the grutcin~+ season,
<br />e-hen irrigation water is added to the ground e•uter. '1'he
<br />~ruund tc;tter is bcueliciul to plnnts, such us alfalfa, that
<br />lun'e routs lung enough to reach it. Generally, t he surCnce
<br />later is cloy loam, but in same areas it is town.
<br />~13ecuuse it is draughty fur shallott•a'uuterl crops, this soil
<br />should be irrigated more frequeattlc t6wt soils that hate a
<br />finer textured subsoil and substratum. Land leveling
<br />helps to spread the irrigation xater uuifurndc. Barnyard
<br />uuuture wart green-manure crops help to 'maintain the
<br />cunteut of or,~,mic matter and to improre tih6. On this
<br />soil timely tillage is important because it precents exc•essice
<br />cloddiness uutl cumparting. (Irrigated a]pahility unit
<br />IIn--1)
<br />Thf the Las series are utnderntcly deep to
<br />deep, iwperfecth' dranted. and saline. 'I•hey developed
<br />in ]o;uuc to clacec nlhn iunt that. iu some places is shati-
<br />fierl tcith s;unlt' loam. '1'her r,cc•ur only mt the bottom
<br />lands tint lute terraces of the .1rl:;msas Pico :uul its
<br />nmjor tributaries. 'Phesc soils hove n high tenter rnble
<br />if ILey me not artificinlh drniued. Thee arc. diffcult
<br />to drain hecnu,e Ihey are nc;mly level, drainnee outlets
<br />need ;t sloping grade.
<br />'I'I,e aurf:ue Inter of tlie~c soils is crnvish hrotcn mul
<br />is ]0 to 2Q inches tliich. lu man}' ,laces nhere these
<br />toils hate lreeu irri!~ated tcith nuuldt river [cater. the
<br />su rf;tce later i= finer textured thou typical because silt
<br />and sloe hate been deposited. Grnernlh, the soh=oil is
<br />erncish-hrotcn ro d;ml:-~~rac loaw or cloy luani, but. in
<br />,outs pl,n~e=. it is cl,tr. Lt ~nnu• areas the ln:un nr r•lay
<br />lunlu is tceal:h~ slratilicd. 'I'br sub;nil i, hard tcheu dry
<br />:,ud lirnt when moist awl is ;u n depth of :;G lu }il inches.
<br />'1'hr sub<Irunlw i~ grnrrallt' slrnlified lo:nn ur rho' tonal,
<br />bni iu uun,r plncr.; it is s:wdc ;nut gr;ttclly hcttceen a
<br />depth ot° :N. ;unl fu inrbr•;. lu t6e lower pot; of the soil
<br />profile tu'e rust-colored mottles. Afuttling is nt a depth
<br />of mih' L" inches in aurae places, but it is and}- iu the
<br />s:uui~ =ub=h-nhuu iu other area,. Thee :oil- are ra]-
<br />r:mrun5 I lu•nughnnt.
<br />'I'hex• v,ih t:n,r tcirieh- in s+liuih-, in texture of fbe
<br />vnfarr loser curl the suhstrntun]. and in degree of
<br />snvlificnfinn tln•oughrntt the profile. The surface layer
<br />i., lunar, cl:rc lo;uu, or s;uulc leant. Iu ,ume plaecs the
<br />snb~lruwu i< rl;,t'. Lt otter lrlare~ it is ~nnd nl a depth
<br />of ?it lu ;tt im~hes. .~nlinity rau~c~ front slight in setere.
<br />L;is <ail= have n prulilr Thal i< <~nuilar to thnl of the
<br />L:,, .luiwn =nil=, but ihrt :nr more ruhrrern, :nr unuh
<br />uu,rr. clarrv, and are better drained. Thor tier uol so
<br />toll drained n= Ihr llat re ~uil~ :uul err Inur,• ~n liar.
<br />.l era., of Ihr-o ~uils tla,l :mr in unties ra i,_n..uppurl a
<br />dru-c >Iaud u1' nlh:,li -m~;u nu. iulanJ .all ~_ra-~. =tcitrh-
<br />~ra", wrl~r,, :old ru-hr-,. 'I'bex' -,•II- ~pl ~~dw~r high
<br />)irLl~ oi' ualite _ra,~t.~ •uitablr for pn=our.
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