|
<br />' Is
<br />1
<br />
<br />
<br />
<br />
<br />301E 3GKCE l' SEIr1E5 1960, SU. 2S
<br />sr:n'rlh', anttain uun•c clay, ;uul have sunmler ,tcucntt'u
<br />[h;ur Cascnju soils.
<br />Fort Collins loam, 0 to 3 percent slopes iFcBj.-'T'his
<br />soil occur: un ne:u•Ir Icyel lerr:rrc; Hint gr,utly slopin
<br />upbuul~. 1t ha, ;, profile similar to tlrc one de=cribe;l I'ur
<br />the.,erie>. except in ;urn; on ne;u'ly lerel <n'e:uu terrn;•c;.
<br />Irt tbe~e:u•ca; rite =nil i; deeper than the one described; it
<br />is severally uu,re th:w 5 feet deep. :\L.o, IL has ;t nun's
<br />;ilic profile, runtaim less . aud :uul •~r;n el thrntr ~i,out,
<br />an<I doe; not oyerlic sr:u'el and s:uul C)n the terraces
<br />thi; ;oil developed in ~il[_y alluvial ntntcrinl. .[t receive,
<br />dome runoff from udj;u•ent are:w and prudure; better crop,
<br />and more ,•rass than .oilx that receive les mui=tore.
<br />'Cbi; .nil takes iu water nt a median[ role, curl its
<br />subsoil is moderately ,tuts in pernteabilit,y. tVater-holding
<br />atpncity is medium t.. high, ;uul must tvu[2r held in the
<br />soil is readily ut'ailable to phutts. Xatur;tl fertility is
<br />medium.
<br />'I'bis soil i, used for rau~re and Cur rh•~ Gu ntimt. The
<br />native .-egetntinn is mainly bloc drama aud bufFulrrsra-.;,
<br />but un tein'aces o'esteru wheat~r:u= and little rabhitbru,h
<br />al.;u gruty. 'Che >uil is fairy- well suited hr rlryL•trming
<br />:aid produces _^_ooil yield; of [wheat and snrhunr 11•hen the
<br />weather is f:n-ur;tlrle. Stubble-n udclt tillu_e and terrnc-
<br />in, :uul contour I•a rl uing' un the ~,entle nlope~, help hr c•un-
<br />serye soil nruisture and to cunh'ul erosiuu. Su•ipcrnppin~
<br />help; to ~ ~tntrul erosion. (Drt Innd cap;tbilit}- unit 1Cc-1;
<br />Loamy Plain. r:utse site)
<br />Fort Collins loam, 3 to 5 percent slopes (FcCj.-'Chia
<br />sloping soil luu rapid internal drainage and medium a'uter-
<br />bolding cupacitc. 1~'uter runs off at a nuxlerutely r;tpid
<br />rate, and rills form in cultivated areas.
<br />'Phis soil is best anted to permauentgrass, but in climat-
<br />ic znue C it produces Gtir yields of wheat and sor•rhuru.
<br />The uutiye yer~eUttiun i. nutinly blue ,n•,una ;utd buHub?-
<br />gntss. A coyer crop sbouk[ be phutte~i in areas That are
<br />to he reseeded to eras;. These wrens should not be
<br />grazed until a stnud of sass is established, In cultic ated
<br />,[tens stubble-angel[ tillage, contour Farming, sh•ipcrnp-
<br />pin~, and terrucin~ are needed to conserve nwistm-e and
<br />to control erusiun. \\ltere coyer is inadeyuate, tying
<br />erosion can he controlled by chiseling and listing. (Dry-
<br />land capability units IVs-'? in clintutic zone C, VIe-° •in
<br />climatic zone D; Lonmc Plains range site]
<br />Fort Collins sandy loam, 3 to 5 percent slopes (FnC).-
<br />This soil occurs only' ou uplands in the southtyestern
<br />part of the county. Internal ch-uinuge is rrpid, and water-
<br />holding capacity is low [o medium.
<br />This soil is mostly in range and is well suited to (hut
<br />use. It is nminl- in sand sage, sideoats gr,tnnt, blue
<br />gntma, aud }'aced. Gaud munu~ement that presents
<br />overgrazing encuurnges the growth of desirable grasses.
<br />(llryland cnpabilitt- unit b-Ie-3; Sandy PLtius r:utge
<br />site)
<br />Lt the Glendive series ^re moderately- shallow to deep,
<br />well-drained sandy wits that deyeluped in cnh•areous ma-
<br />terial on terraces and bottmn )nods. 'T'hese soils ~ener-
<br />alh- are in stratified nlluciunt, though some of them are
<br />in rco•m•I:ed, wind-deposited s:uuly material.
<br />1'he surface layer of the soils is bt•own sandy loom
<br />that. is G to lo_ inches thick and is very friable when
<br />uu,i<r. •hhc ~nb~oil i.<. -:Hide lain That i= ycllo,c islr hruml
<br />to tctlr bro rcu whcu dry au~1 Marl: yello~yi~h bru,cu .n
<br />bt•o+vn sbru nwi-t. •Che ~nb~n~:uuw is ~i r:n iticd ~;uuk
<br />In:uu ur In:uny tine >and, awl iu -~auc plmr~ it uycrlir,
<br />liuc -;nnl ur =Hint ,nut sravI :u a dcplb of :;t. In nli ineh,•~.
<br />"Cho-e -uiln ;u•c rnlr:u'ouns Iln~unsh~nrt.
<br />r;lrmliyc suilo care mainly in the J,~ ~rce ul' =n';Ititir;t-
<br />tion in the ~nh-oil ^ml ih~ -n1,-n':,Inw ;unl in the ~Icl,lh
<br />h;, aud Ibc n:rlurc nf, the undrt'lyiug nun trial. Lt sours
<br />n ten; thr• sub=nil an;l pub=t rnhim arc fairly nuifurm, bat
<br />in other:: rbry run~i-t uE allcru:uc IacerS at Handy loam.
<br />lo;unv ~nn,l.~:unl s:utd. ~nih Ih:u are ?u to :;n` inched
<br />drep•tn ~;m,I :u~e nurpprd as <:wd sub-lrahuu phaa•s.
<br />Chu• .nil is mapt,ed a. a cln~' snh,l rnlum I;hn-c.
<br />'1'lu~ tllcn;lice ~oiL are ;iwil:n• u, the IGn•nm:w sails
<br />bat huge a ,:only ~nrfare I:n',a. 'hhcy :u'e co;u•=er irs-
<br />nurd than the ll:nre xoll-:utd h;uc n•lc-s ~,uulc prulilc,
<br />th:ut the Lincuhi =~,il=.
<br />'Che hind; of Maul; un tiloodita soils dcl,cud lot,_~•Ic
<br />nn rho degree ~uul fre~lnrur~' of tloudin~+. ~nlne nrca
<br />nlons nc~ -Arl:;ui-as ]liver ;; re iu stnud of cutinutcood
<br />aud t:uu:u'i~l:. [)they areas are wn'ered tcirh sand sa c.
<br />"Che mod cuuuunn _ra=es are sa'ia~hgrns=, blue ~+r:tluu,
<br />i,uul drop=cert. and alkali snc:;ron.
<br />Glendive fine sandy loam, 0 to 1 percent slopes tGaA).-
<br />'Chis ne;vh' level soil occurs in the•nmjor irrigated part
<br />of fire ruunty. P•.xcept for :,tens tinder irrigation, the
<br />soil mu.' be ncc:rsinuallc flooded.
<br />'(•his soil geuerallt hes a tine s:uuly loam surface L,~'er,
<br />is underhtiu by sand aud gr:tyel, and in some areas is
<br />higldy stratified (fig. 1l). Xear Carlton, Ituwecer, is nn
<br />;u'ea that has a loamy fine s,uxl surface L•tyer. L, this
<br />area the soil htilis grayef, is not hi~ld~ stratified, and is
<br />inure uuifurnt throughout the pruhle th;ut is normal for
<br />the Glendive sniffs.
<br />'I'bis soil takes in water rapidly. 'Che water-bottling
<br />capnci[g- is moderntel~- lua-, and must of the water stored
<br />is readily- ayuiLrble to pl:utts.
<br />IF it is dry farmed, [Lis soil is easy to work but is ditFicult
<br />to mamtge•because wind erosion is hard to cunttrol. Tbc
<br />hazard of wind erosion is severe. Stubble-nntlch tilhtgc
<br />and stripcruppin~ help to conserve moisture and to cun-
<br />trul wind erusiun. In many areas where the ground cuter
<br />is inadequate tar protection, emergence tillage is needed
<br />to control wind erosion.
<br />\where it. is irrigated, the soil pruiluces good cields i[
<br />the management of water is spud. Lt sums places 6utd
<br />leveling is needed to spread the water more uniforndc.
<br />1Fater is used most efficiently if the irrigation runs are nut
<br />too tune. Barncnrd numw'e and green-nuuntre crop,
<br />help to uutintuin tertilit} and the content of manic mutter.
<br />(Irrigates! cap,tbilitn- unit Its-O; drehuul c;tpnbilit;v units
<br />1\'e--1 i^ climatic zone C, ~-Ie-4~ in climatic zone D;
<br />Sandy- Bottum Land range site)
<br />lendive fine sandy loam, 1 l0 3 percent slopes (Ga8).-
<br />'Chis gently sloping soil occurs in the irrigated p,u't of the
<br />count} along the taller of the :lrkunsas Riser. \~nter
<br />nuumgernent on this soil is a little more difficult tltnn it is
<br />on Heart}- level Glendive soils.
<br />If management is good, this soil is Gtirk well suited to
<br />irrigation, and some areas are irrigated. tiorghum ,tad
<br />snudl grains do well. ~Itulfa does not do so well ns un
<br />finer textured soils. Inuul leveling nutty he needed to
<br />spread water more uniforutl}-, but it should not be done
<br />
<br />
|