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7Q . SOIL SURVEY •
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<br />Colorado. 'I'hesc data arc representative of most of
<br />Adams Conuty.
<br />'1'bc averagr, annual temperature is near 50° at an
<br />ekwatiml of 6,~0O fret., bat this ran be eN prcte(l to val.y
<br />a fc\e drgrrrs {rnm t.hc luLVCr clecat.inns al. the eastern
<br />end of the county Co thr, highel• cleL'utiuns at the tcesteru
<br />rod. '.l'hr, n'idc a\'cragc rank in daily t.cmprraturc o[
<br />26' to 35° an(I .L \cidc acel;nge range iu annual lemprra-
<br />turc arc typical of the I-Iigh Plains. ,\s a result of \ci(lc
<br />Yal'I:Lt10n5 from clay to da}• or over a period of a feo'
<br />days, cxl.renlcly lwt R'CathCL' In sunuucr nr cztrmncl,y
<br />cold tvcathcr in reinter is gr.ncl:ally nl' shnrl. (lnral,iou and
<br />is {ollon'e(1 Ir}• uwrc moderate Lr,mpcrature.
<br />'1'hc avcra;;e. annnnl glron'ing srason in A(imns County
<br />is about 16n days. '1'ablc 10 gives the proh:Lbility at
<br />Rym•s, Arapnhor Cmmtr•, of thr last frrrzing tempcra-
<br />tures in spring :uul the first {reezing LempcraUu'es in
<br />{all.
<br />Data for long periods inrlicatn Lhnt the aeerage. annual
<br />Precipitation in the count}' ranges from 12. ~ to 14.6
<br />Inches. it tends to br. higher in the \cestrrn part. Varia-
<br />tions n'ithin the count;v arc rrlalyd to thr local terrain,
<br />clecation, and slope. Particnlnrl}' in spring an(1 summr.r,
<br />the rst.rcuLC. Variability in the amount of precipitation
<br />Crum yr;n• to yl:'Lr mul •brteren localities in thr samr. vrar
<br />is sn large that rrrn Inng-pm'iod nvcrar•cs :u•c affrcted h}•
<br />ch;u4cc ncrurrrnlrs and arc not. rnsik intm•prrlyd in
<br />terms of arl.nal climatic differrnrrs. Probable annual
<br />precipitation (fig. 10) is partirulnrlc si~nilirnnt. in shorv-
<br />m~ the rxpcrtrd cnriation of rainfall from pear to yr:u'.
<br />illh Cll :1111111x1 pl'M11111ta tI0ll for 2 trots in a ro a• Is less
<br />than ahmft. 11 IIIPIIrS, most drylanrl crops fail. '1'\cn m•
<br />mme dry }'e:us 'm a rmv generally do ant. orrnr more
<br />thin onw l`1'rl,\' IO \'ral'S. Figures on the nm'Inal ncrralo
<br />temperature tool precipitation by months and }'car, along
<br />tcit.h clays of snore rover. arc gicrn in table 0.
<br />'Total precipital.imt and snmvfnll in t\•inter arc higher
<br />in the terstrrn p:n't of thr. connLy than iu t.6c rastrrn
<br />part. I)ilCmrnrrs ;uc sonmt.imcR small bat. cmisistcul. from
<br />Orl.obcr into 'fay. 'I'hr. accragc xnnnl4l snm\'fxll is abmrt.
<br />60 inrhrs at I)rneer and is about. 4C inches nt. Recrs. In
<br />Sl1111111CI', I70\\'reCl', pI'PCII)Itxtl011 gC1lCrally ;LYCI'xgl`S SOIIII'-
<br />u•hat higher in Lhr 1`;1SLCI'll part of the rount.t' but is
<br />highly e:u•iablc {rnm vonr to vcxr at. (liffcrcut lornlitirs.
<br />The accragc rrlati\~c Illlll)IdItV IS a0 pcrcrnt tbron_•h
<br />the day an(1 f2 percent during the night. Tt. is slightly
<br />higher in reinter f.han in sununcr. nn the. avcragr, the
<br />sun shines GJ pcrccut of the possible hours of sunlight
<br />;utnually.
<br />llailstm'ms that. arc dantagiug to crops occur in some
<br />parts nl' the county almost. rrrry rr:u. 'I'hcrr. is nn ex•
<br />ten(le(1 pattern In the had5(111'lllF. ~I'IWS' gl`IICi:ally ncctlr
<br />hct\cecn \lav 1:1 nu(1 Septembm' I, and Ihey ore most
<br />lil(cl}' la Decor in .lone an(1 .)nly. 1'he hail grua'nlly tolls
<br />in stops Irss t.Il;lil l mile tci(ic and f miles long. IIILiI is
<br />mono common in the eastern part o[ the ronuty than is
<br />the \cesl.cln) part.
<br />Literatiire Cited
<br />(.1) .\VI:RICAN ,\RSOCIATION OP STATN Illnlllr'Al' nI+FICIALn.
<br />I!IGI. S'I'A NPnltil SI'F.CiriCAT10N5 ran Il llill rl'Al' \IAl'1 IIIALA
<br />.\NU AYa'110n5 OF SARI1'LI\^ .\\11'1'1•:5'1'1 NO. Isll, h, 2 C,
<br />illus. lVashiugton, D.C.
<br />(_) 13,\LUrr'1 ~. AL\Irl<. 1\I!LI 11nn, (•IL\IILF.R I•:., :11111 'I'lllllll', .1.\)I rSV.
<br />Jn35. son, r;1..ASSIrmATmN. U.S. Uepl. r1gr. 1'hk.: ai1L
<br />JIHLI, ilins.
<br />]!Ili!, SUIT. CL,\RSIrICAT10N IN 1'IIF. UNITP:O STATES. tiCl. 11i:
<br />10?7-1 aS4.
<br />(~1) Tuoar, .l n~lcs and SAIITII. CUr U.
<br />1PID. if if.ll liR cAl'ROOIti ES OF ROII. CLASSIFI C.\TION: nprlal,
<br />611nOIli1l:R, AND OIIRAT SOIL OROUPR. Sall Sfl, al;
<br />(G) DNI'rfal til'Al'I':.5 DI':rARTA1RNl' OF .\OIIICIiLTUllli.
<br />3!IG 1. ROIL RII RI'IiY AIANUAI., dgr. II:1IIdhanlC 1S, .a9, pp„
<br />iIInR. lSnpplvuualt issurll iu AIRy IGG'!I
<br />tl'1) -
<br />1!IGa, 5011, CLASSIFICATION, A CO \I I'Rf 111:N511'I: Rl'STr\I, 7TII
<br />ArrllozulnrloN. n_f ~ pp„ illus. I Supplruu•uIR Issnnl
<br />iu Nnrrh 1:167 mLLI Septemhrv 1t1G5J
<br />(7) UNrr4:u FTATL:R II{:PAiI'r\I L:NT nr Dr:rr.NSr:.
<br />]!IIiS. IINIPII:p 8011, CLASSIfICAt'ION Rt'S'rF.ll I'Olt IIOAn9. Ally
<br />rI R1.IrS, I;AI D.ANNAII!NTS, AND rOUNI~AT10N 5. >111~
<br />STD-Gl!IB. 30 PP•, illus.
<br />Glossary
<br />A ggrcgalr, soil. \Inuy' ana earl iclcs held in n single um55 or clusirr,
<br />Natural soil nggrcga lc5 snrh as cnuub~. hlncls, nr prisms, nrr
<br />rnllyd Prds. Clads nrr aggrrgnlcs pradu'•rd LT lilingr nr loglaup.
<br />Alkali sail. Ik•nrrn lip, n bight}' all:nline Snil. Rprci lirall}', nn alkali
<br />coil Ims sa high :\ degree of Rlkalin3q~ (pll ti:r nr ldghrr)
<br />of cu high n Pr rreningc of rsrlmngrablc sodium (la pro+'nl nr
<br />uun'c aC thr total exchangahle Irn5r5), nr but h, Ihat the grnnlL
<br />of must crap pi:urts is Imv Orom th15 c:nlsc.
<br />'I'nm.r 10.-ProGuLlr, dalr.r o/ lN.cl (rer;ill~~ IclnyrcrN.Mu'rs 1:n. aprin!/ n1u7. first 11L fall
<br />lQascd mr data frmn f3ycrv, Arapa6oc Conntyl
<br />I'rullabilil r
<br />U;drs fur a guru prnbnbililp M. a Icugrrrd me nf-
<br />IG° 1'. nr Inn'~:r ~ 2G° Ir. ur Inrcrr
<br />Rpring:
<br />I prat in Ill lalrr Iluul__ ____ ____ ____ ______ r\pril 17___ _
<br />?prnrs iu Ill lnlrr lhau____ ____ ____________ April ll_.__.
<br />5 yrnrs iu 111 I:J rr lh:m____________ ____ ______ \I:u'r•h al___._
<br />tau:
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<br />I crnr iu 10 rm'li~~r lhun____ ___ _______ __ Oclntrrr'!d ___
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<br />2 pr;u'e in 10 rurlirr lhnu____ _____ ___ __ Urlnhrr'1!I__
<br />L crnr in In rnl'hrr lh:ul_________ ________ __ Nucrwhrr ti___
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<br />April 'S:I _____ \Iay 4_, ___ \lar' I:.. _. ._ \1:x'3!1.
<br />April Ix ___ April '!S___. \lac Z__.. __ \I:x'4a.
<br />r\pril 7 ___. April 17, ____ April '!i.___ \lav II.
<br />Urinbrr lA ._I Ih+bdu`r :S. _I ~rplrud u•r '!.T._I F'plrmhrr I:1
<br />(lel„I u•r I!1__ Urlu6rr .~____ 4nrlrulhrr :;n.. ti'~plruJu•r LY.
<br />UuGlbrr '!!I__ _ Urinbcr Ia___ Url"hrr III_ ~'•plculhrr "'I.
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