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<br />This unit c•nnsiste of rapidly permeable Lo moderately
<br />permeable, +ve11 drained to excessively drained gravelly
<br />m• mbbl~ saurl}• Ioams and cnbbly looms that arc (. to
<br />40 inches deep over .e:nul wart gr;nel. Slopes ;u'e 0 to R
<br />percent. 9'he ;n;ril:d)le ++:Iler capacity is lou•. 'these soils
<br />:u~c irrigated. The fro.et-Il~ee season is 90 to 105 days.
<br />•Chese soils are suited to irrigaterl crops. •fhe crops
<br />most canmoulc gro+yn :u'e alfalfa, potatoes, barley,
<br />:urd Hats. "fhe soils :u c better suited to Icss intensive
<br />uses. such as irrigated pasture. Crested wheat, inter-
<br />mediate n belt, pube:;cent +yheat. P.ussian +yildiye,
<br />smooth brume, s+veetrloyer, wart alfalfa are suitable
<br />plants far irrigaterl pasture.
<br />The depth aver snarl and ;.~racel, droughtiness, Ion'
<br />rainfall. wart cobbles wart gravel are the main cmrcerns
<br />of nl;ln;lf[r'1llCllt. C')I)I)IC removal, land leveling, irriga-
<br />linn ++:rtcr nnuulg~ement, and fertility maintenance
<br />protect the sail against deterioration and help to main-
<br />l;+in prollu~~tinn. l:emnving cobbles from the surface
<br />Inver makes till:q,r easier ;Ind more frasiblc wart s:n'es
<br />+vear on machincrr, L;uul lecelulg makes irrigntiun
<br />easier and promotes better )voter management.
<br />Extreme care is needed in leveling to amid exposing
<br />large wrens of gravel bars. Sprinklers, hinders, mid
<br />furro+cs are suiLlhle far irrigntimr. Center picot
<br />sprinkler systems are well suiteil. A cropping scstem
<br />that. consists nusth of close-growing crops wart shal-
<br />In++'-rooted legumes helps to maintain fertilit}•.
<br />c+r+mu n uslT vu,-:
<br />This unit consi;Ls of rlcep mculeralcl~ slo+yh• perme-
<br />able t„ rnpidl}' permeable, some+vhat pnnrl}' rLainerl to
<br />excessively rlraiuerl cnbblc or ;:r;nelly sandy loamy or
<br />looms that :u c C, M Irt inches deep aver s;uul and gravel.
<br />Slopes are 0 to' percent. The available water capacity
<br />is lo+c or moderate. '1'hc average annual precipitatiml is
<br />7 inches.'fhe frost-free season is 90 to IUS days.
<br />These soil, ;ue suited to range, which is•;trazed by
<br />cattle and sheep. Thee are also suited to less intensive
<br />uses, such as +vildlife habitat.
<br />The lon• rainfall ;urd the droughtiness. boUr oC +yhic•h
<br />limit production, are the main cmrcerns of manage-
<br />ment. Proper stacking, fencing, and stockn;rter devel-
<br />opment protect the soil against deterioration and help
<br />to maintain production. Fencing and stocku';rter devel-
<br />opment promote use oC range and gro+cth of desirable
<br />grasses. Because of loin r:rainfall, establishing gra55 by
<br />seeding is verc difficult.
<br />Mn UnTd1Y OI'Ta'.+~il f1A ~'f, F. 51'fF.
<br />Soils of Lhis ran},re site have a loam, gravelly sandy
<br />loam, cobbly s;u)dv loam, or cobbly loam surface layer
<br />and are moderately slon•Iv to rapidly permeable. The
<br />available +voter capacity is dominanth• lo+v to moder-
<br />ate, but ranges to high. Slopes are 0 to °, percent. Pre-
<br />cipitation is about r or 8 inches annually occurring
<br />mostly as rain in April thrau}{h September. 9'he peak
<br />period is in .July :uul August fallowing a rlly Period in
<br />June. Cnorl soil drainage Hart Im+• rainfall are dominat-
<br />ing influences on the kind and amount of vegetation.
<br />The vegetation is that of the grasslands iu high
<br />momrtain parks and valle~•s. It is rlmniuated by blue
<br />grnma, squirreRnil, Indian ricegrass, :uui +vestern
<br />wheat. The approximate potential plvrt community is
<br />30 to 40 percent squirreltail, Indian ricegrass, +vestcrn
<br />+vheatgrass, and needleandthread; ?0 to v0 percent
<br />blue grama; 5 to 10 percent sand dropseed, three-awn,
<br />winterfat, fourwing saltbush. and green rabbitbrush;
<br />and 2 to 5 percent perennial (orbs.
<br />If the range is in excellent
<br />anal yield is about 800 pound
<br />favm•able moisture and about ;
<br />able years. Of this total yield, a
<br />plants that provide forage for c
<br />Virhen this site has been Bras
<br />rinds, squirreltail, Indi:m rice
<br />grass, and needleandthread dec,
<br />grama and green rabbitbrush i
<br />and pricklypear invade. Conti
<br />further deterioration permits 1
<br />by ring muhly and, when condi
<br />Waal +veeds. Rabhitbrush, soak
<br />generally are dominant pL•urts
<br />onditirnt, the total an-
<br />; per Here in years of
<br />00 pounds in unfacor-
<br />reut 85 percent is from
<br />rttle and sheep.
<br />ed heavily for long pe-
<br />;rass, +eesterm o•heat-
<br />ease m• disappear. Blue
<br />crease, and snakeweed
<br />ued heavy grazing or
<br />ie invasion of the site
<br />,ions are favorable, an-
<br />I++'eed, and pricklypear
<br />under such conditions.
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