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<br />-. <br /> <br />IGG.; <br /> <br />( ?TQJoct-1o:nds) <br /> <br />The sizo of tho :J.ra:J. o.nd <J spocio.lly its 101:'.[;th of o.beut 85 ."ilos <br />creatos ,a difficulty in describinr; in lauch dvtail nll of the soil <br />characteristics oncountorod. The r..ajerity of tho soil profiles tn!:on <br />in this aTOo. rovoo.l oithor a clny lo~o or honTJ silt lon~ topsoil. Tho <br />subsoil is usually si:'.1ilnr to tho topsoil, but who" vo.rir.ticms n.ro found <br />tho subsoil boocnaos 0. hoavior clc.y lOal" or clo.y. :.lonG with tho clc.y <br />loan sdls SuT.!O aro<os of clay soil ovidontly dorivod froT.! the undorlyinG <br />shalo o.r(J fDund. i.il:owise, thore nro sizeable aroo.s of fino sandy 10=. <br />It is no'..; UnC0::J1.1an t:",t throo of four soil profiles shc'irinr.; 0. differont <br />soil toxturo aro fo'-'nd on tho sano ftrn. :.bout 4,000 acros of prosently <br />irri;~:at(,d lo.nd in tho o.roc. viera cl:J.ssiriod o.s Clc.8s 6 bocCl.uso of inforior <br />soil ccuditions. This hnd usually I1:1S poor dro.inc.,;o duo to aI:: inpor- <br />vious t"lo.o' subsoil anu 0. correspondincly lIigh s:clt content, or olso it <br />is loer..tod in tilO bottenla!lds of the ;.rko.nsc.s R1Yor and tributnry <br />stro::>,;"s whero soepa!';e l'osults fro;" the irri::ation of the upland o.roas. <br />- - -- <br />. - - .--..------ <br />- -- --- -- -- <br />-~----- - - --- -- <br />-- <br /> <br />. <br /> <br />- -=:='-~pp-"~~_but(;cl_y-':ha.lf~,)f.::---thO~-~ri"i::~blc bnd ,i s ~_Chs s_=:l:_ ~-lan~- '~ihH:~" <br />-h'"iG~ c_cnsis.c-S-()f=liit:h~prt-dUoj;ivo,; Tri"Ji.lg ,~,?il.to-_o.- dopthof, ncr_o_tho.!l <br />5 ' fOdt::T:lo", -"-u~ sop= rs-sur{ic'i.c.:ltiy'.::pci~;vi GU-"- ,t_Q.-o.ll9,,'{-=-o.i:JpI~i:ii-.!!:i~~Cte~ <br />and ponctr:it ~_c.n="-~ :irI:i: :ccti-on- water. __"ator--hcldinp,- :co.pcc-city=of-,pruct1-- <br />COolly nll of --tho- Cbss -i.-land -is !~-:-'JCl to -oxco llont .-' If.ostnC;f --tne BOn- <br />is c::tlenroous .:end in ,"o.nO' ~rofilos B;:all flaJ:es cf lir:,o o.ro found. <br /> <br />Tho Clc.ss 2 land usually lcs 0. ll<en.viel" tuxturu, ospocially in the <br />subsoil, whioh roduces pornco."ility ,'f tho soil "-:1d increo.sos tho neod <br />for careful up!,Uc'ltic'l of v''lter. :.pplico.tion of water to tho surfllce <br />of the soil i:1USt bo ecntinued fer lon/; period s durin[; irrir;o.t ion in <br />order to he certain t:mt tIle l'/C.ter h".s penotrated to a sufficient depth. <br />This practice results in considornble v"ste w~ter which is lost o.t tho <br />lOIVor end of the field boinG irricc.tCJd. :.pplico.tion of no. oxcessivo <br />quo.ntity of wnter t~ tho soil of ton results in tonporary wo.torlo[;t;inG, <br />duo to tho hiGh watar-holdinG c"pe.city an.:] tho slGW dr:'.ino.co of tho <br />water throui;h tho sc,il. <br /> <br />In honoral, ~ll of tho irricnble lo.nd is co.pablo of hir,h produc- <br />tion; hewovor, thG upplioc.tioll of ho.rnyo.rd no.nure or tho uso of croon <br />uanure crops is hi'r:hly recor.u-.lCnded to l.lc.intnin the or:;o.nic r.\.1.ttor of <br />the soil '1nd to l:c.op tho scll friable. j"any fc.rt'ers he.vo found that <br />thu llpplicn.tion of c0uT.lercin.l phospho.tu fortilizors has incroo.sod tho <br />crop yiolds of the o.ro'1. <br /> <br />-------- <br /> <br />32 <br />