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<br />]he lloopcr series consists of tear:rnR~d sails
<br />1.0 to 90 inches deep Dyer s;md tool gra 1. 'these soils
<br />formed in :dluvium ml old flood phtins. Slupcs ;n c fl to
<br />] percent. laevnt.iun is 7,GU(I to 7,8(10 feet. Natural
<br />vegetation is damin:uilly grca.ece'uod, rabbilbrush,
<br />alk;tli sacatnn, :md saltgrass. 'The average :nnnral pre-
<br />pltation is about 7 inches, the mean annual air tern-
<br />~r;tture is about 91° F, and the frost-free season is
<br />JO to 100 days.
<br />In a representative profile the surface lacer is gray-
<br />ish brolvn loamy sand about 5 inches thick. •fhe subsoil
<br />is dark brown or brown clay loam about 18 iuches
<br />thick. The substratum is 7 inches of dark grayish
<br />bro+yn sandy clay loam over d:u'k grayish brown
<br />sand that extends to a depth of GO inches ur more.
<br />Permeability is eery slo}v, and the available water
<br />capacity is lo1v. P.eaction is very strongly alkaline. 'The
<br />soils are strongly alkali. The effective routing depth
<br />is °_0 to 90 inches.
<br />'these soils :u'e used fur range, irrigated meadoly,
<br />and xwildlife.
<br />P,epresentative profde of lloopcr loamy sand, ?,G90
<br />feet north and 230 feet west of the southeast corner
<br />sec. 3G, T..°,8 N., R. 8 E.
<br />A2-0 to 5 inches; light gray (]OYR i/2) 1°nmy sand, grey-
<br />ish brown (]OFR 5/2) mni sl; mod rra lc lhic4: platy
<br />sLrttcture parting to stt ong medium granular; hard,
<br />very friable; vesicular; aenklc rah arcuus; very
<br />strongly alkaline; abrupt snxioth houndxn•.
<br />B?t-5 to 14 inches; brown (]UFR 5/3) heavy clay loam,
<br />dark Lro++m (lOYR 4/3) moist; moderate nmdium
<br />columnar and modern le medium prismatic structure
<br />parting to strung modium blocky; eery hard, eery
<br />Cvm; thin ronlinuous clay films nn pcds anri in
<br />root channels; calcareous; ter}' strmrgly alkaline;
<br />clear smooth boundary.
<br />A3-14 Lo 23 inches; pale brown (]Ol-P. G/3) clay ln:rm,
<br />brown (101'R 5/3) moist; weak medium su ba ng ular
<br />blocky st rudure parting to moderate Gar gr:unrla r;
<br />hard, firm; thin patchy clay films on Ards; Bard,
<br />firm; eery strongly alkaline; calca rrou s; clear
<br />smooth bounrlar}•.
<br />C1-23 to 30 inches; light brow nish gray (]OYh G/^_) sandy
<br />clay loam, dark grayish brown (]01'R A/'!) moist;
<br />massive; slightly hard, very friar blc; r:drn n•uus;
<br />very stron¢ly alkaline; clear srnoolh beundo ry.
<br />IIC2-30 to 60 inches; grayish brown (]OYP. S!^_) sand,
<br />dark grayish brown (]U}'R 4/?) moist; single
<br />grained; loose; calca renus; very sLongly alkaline.
<br />The A? hm~izon is 3 to B inr.hrs thick and is Inainv =and
<br />to clay loam. The R?L 6nrizon is 8 In n0 inchrs thick ~;md is
<br />clay or heavy clay Ina m. The C1 hrn'iznn is sa rvdc claw loam
<br />or sandy loam. Exchangeable sodium ranges from 15 to f0
<br />percent in the Rat and A3 hnri zoos. In some prdons the
<br />loamy sand A horizon has Icss than 15 prrcrnt c~rlm ngcablc
<br />sodium. The soil is sl rongly to eery strmrgly alkali.
<br />ITo-lloopcr luanq' surd. This nearly level soil
<br />occupies old flood pLuns in the southeastern )cart of
<br />the Area. Slrrpes are 0 to 1 percent. The profile of this
<br />soil is the one described as representative of the series.
<br />The }rater table is about 98 to GO inches helot+' the
<br />surface because of irrigation. Salinity is none to mode-
<br />rate in the surface layer. About 30 percent of this unit
<br />is included areas of Hrroper clay loam, ]~i percent :n~eas
<br />of Arena loam, and 10 percent areas of San T,uis sandy
<br />loam. Also included area fete areas of soil that is
<br />similar to this Hooper soil but has bright colored mot-
<br />tles in the sand substratum.
<br />Runoff is very story. The soil blowing hazard is mode-
<br />rate.
<br />I This soil is used mostly fm' range. Some areas are
<br />1+zd for irrigated meadoo'. Some ;u~e used as twildlife
<br />S~tbitat. Capability unit VIs-] irrigated, Vlls-5 non-
<br />irrigated; Salt Flats range site.
<br />occupies old Iluud plains in the ~.,,iitLrn~l ern pant al
<br />Ute Aron. Slnlres (l to 1 ptv crnl. '/'Ire I,rnfilc ref Ibis
<br />soil is simihn' tn~c one rlcscriLod ;ts rclnr~rnL•r+icc
<br />of the series, but the surL•irc layer is chr}• lu:nn a~~d
<br />typically has more alkali at the surfucc (fie. 5). 'I~lic
<br />}rater table is about 48 to Gp inches Leloa• the >urfare
<br />bec;nlsc of irrig:dinn. Salinity is nu,dcrale.
<br />About 10 percent of this unit is incladerl :u vas of
<br />lloopcr lo;nny sand ur Arena loom. Also inc•ludcd are
<br />small :n'cas of San Luis sturdy' loam ;rod a fet+' arr•;ts
<br />of a soil that is similar to this lloopcr soil but h;ts
<br />bright. colored mottles in the sand substratum.
<br />Runoff is very slo}v. The erosion hazard is slight.
<br />This soil is used mostly for }wildlife habitat. ]t pro-
<br />cirles good nesting areas for clucks. Some areas ;ne
<br />used for limited gracing. 'The we};elation is rnasth-
<br />grease}wnud. Capability unit \rlls-1 nonirrigated; not
<br />assigned to a ranfre site.
<br />Jndoro Srrics
<br />'fhe Jorlero series consists of deep, nett rh:rived
<br />soils. These soils furmcrl in lo;nnc nlltnium nn all~l}ial
<br />fans and }'alley hatlums. Slnlres :ne 0 to G Ircl rent.
<br />Eleyatiun is 8.000 to 9.OU0 feet. 1\ntural vegel,•ttian is
<br />dominantly rabbitbrush, blue grmm~, t+estern +t hoat-
<br />grass, and ueedlcandthre:rd. The :n range annual prc-
<br />cipitatinn is about ]2 inches, the pram annual air
<br />temperature is about 42° F, and the trust-free sensrul
<br />IS 8~ LO I OG Hay's.
<br />Jn a representatiwe profile the uplrer 24 inches is
<br />dark broten and very dark grayish brutcn loam. Pelo+c
<br />this is very dark grayish bro+cn and dark grayish
<br />brotyn loam stratified }yiLh fine s:uvly loam that extends
<br />to a depth of GO inches or more.
<br />Permeability is modr role, :nut the :mailable +y:rlrr
<br />rapacity is high. I'.eaction canoes farm mildly al!:alinc
<br />to moderately alkaline. 'fire effective ranting depth is
<br />more than (i0 iuches.
<br />These soils are used for range, }wildlife, and irrig;t(crl
<br />e1'(1ps.
<br />P,epre~enintiwe profile of .Todero Innn1, along a rlry'
<br />creek channel in the suutht+est quarter sec. 39. 'f. ^9
<br />N., R. G E.
<br />All-0 to 8 inches; bro,cn (10}'R R; ;) loo m, dark l,ioau
<br />(1(IYR 3/3) moist; sl rong rnrdium granular =truc-
<br />turr.; soft, very friable; 5 pr rr!~nt gravel; r•n ldl}
<br />alkaline; gradual +rav} Lou nda n'.
<br />Al?-8 to ?4 inches; gra}ish Lru u~n (lU1~R Si-') I•c m.
<br />vcrv dark grayish brown IIU1~H 3/2) m•~i st;
<br />ururltratc cm rsc sub:urgular bloc lay sl ru~luir I•;,rt-
<br />ing to nrnderaln medium granola r; slightly lard,
<br />eery fri:+ble; 5 prrcant gran rl; mildly al k:ainc;
<br />char +,acy boundary.
<br />A13-?4 to GO inches; gr a}ish I~ro,+n (IOYR 5/~) D~.,m
<br />sl ra li tied +cilh thin Irn.cs of fur sandy Ina m. ~~ r.
<br />dark grayish Lro'an (lU}'R a,%2) m~•ist; u.~~.l• ralr
<br />coarse suha ngular blocky sL nrtu re; =lightly h.rrd,
<br />eery Criable; calr:urous; mod~~rafcly alkalinr;
<br />gradual eacy hou nrla ry.
<br />C-GO to i0 inches; light brot+nish Brae (]a}'R G/2) Irani
<br />strali0ed with thin lensrs of line sand}' Ina m, Ala r4:
<br />gra }'ish brown (JO1'R 4/2) moist; massi cc; lard.
<br />friable; 5 pe went gravel; ralca renus• mo,lr ra;:dy
<br />a14:aline. '
<br />The A hm~i zoo is 90 to more Ihan GO inchrs Ihi~~k. 'floc
<br />rc•nlrnt of gra ccl and rohblrs ra n,~s from 0 to ]$ 1.• runt.
<br />In smnc areas some of the to+~er hnriunrs are r,~ddish
<br />brown. Depth to lime ranges from 10 to 10 inchrs.
<br />Jo-Jodcro loam. This nearly lewcl to gently slol?ing
<br />soil occupies short alluwial fans and narrow valley
<br />bottoms in the foothills in the tcesicrn part of the :1rca
<br />(fiyr. f,). Slopes are 0 to G pcrcenL. About 5 perrrnt of
<br />this unit is included areas of Luhon loam ;rod about G
<br />percent areas of I.7onte loam.
<br />Runoff is moderate, but the soil receit'es runoff from
<br />surrounding hillsides. The hazard of water erosion is
<br />moderate. Gullies have fm med in most areas.
<br />This soil is used mostly for range anri a ildlife. Srnne
<br />areas are used for irrigated alfalfa and small grain.
<br />Capability unit IVe-2 irrigated, Vle-1 nonirrigated;
<br />Foothill Loam range site.
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