Show EXHIBIT S I OF IRRIGATION Spokane Vash Aug approved methods of oC adapt adapted ed to practically every kind of land and the various arlous tree root and vine ino crops will be demonstrated on a 15 nero acro In the lie Spokane vallo valley with withIn In a stones throw of the ell city limits In connection with the tho session of lie tho National Irrigation Congress In Spokane August 9 to Ii rho pur purpose purpose pose Is to afford aford thi th to the tho congress an and visitors an opportunity Y YLO to LO stud the best means of sup moisture b by means to orchards and sugar beet fields vIneyards ards un an dim and grain lands There Thore wIll also he be ions b by manufacturers of apparatus used In modern Irrigation Ton Ten acres o of land has boon set aSIde aalde for dis displays plays of machinery What Is considered b by exports to he be hethe bethe the acme ot of scientific irrigation and at the thie same sarno time the most economIcal method will ho be shown In the UE use of porous tile pipe laid under the ground The principle is 15 the antithesis o of drainage In that the pores and joints of the pipes give out sufficient water vater to supply tho he plant lICo above aboc them This plan Is declared to be practicable cable In moisture for fruIt trees vegetables berries borrIes and aud almost eye every kind or of product the advantage being that tIme the vater carried b by the pipes Is discharged directly below bolow the roots of the lie plant of on au the surface of oC tho ho soil Hail soilA HailA A Primitive Method In comparIson with the tho foregoing plan there will bo the tho method practIced by br irrIgators It was as learned hod to distribute water economically and to the tho best beat ad tago tage No grading ladin or 01 leveling was done dono on this tract In fact in contour It It iii as Nature heft lert Jt It Water Is I taken to the highest point JoInt on lie tho land to distribute Itself over er the gro ground rho Idea In Ihl 1118 J JJ I 0 ulIo of O vatel and narl sol soIl by and 01 cry I I IThe skin The llie Individual also to 0 be tc I calls for piping waler waiN to every To io ninke It i ithe the lie must a head flue rhu I pille Ph DC which nU nifty ho be is 18 run Lo In within three feet feel or of a 11 tree to 10 dis 1118 Jute i circular d I lOb or basin built around th time tree method Is In where IL a small of oC r Is desIred to todo todo do a 11 large Inno of IrrigatIng Is no loss froni evaporation or iceD oen ago and onlY tile tHe ground In the L tree ree the wll 1 r Thol Thio cost or of this lila i is much er or the open ditch UI or n I C Y lOWi QU h L dW is If i roon III 1111 OR t cost CORl of ata tor or orwin oris win Atti is Ild for h by lie by or of pon ditches will also ho 10 rho Jho ditch ditches es Cs are aro of such depth that lie tho water Is l absorbed without witham mol stonIng the tho surface This method Is whore soIl soli has haM a to hake hako or become crusted after afler nt tracts will show shio the o of watering steep steell land In iii pen ollen ditches The Tho On one tract nr from 30 to 46 45 degrees other j shows the terrace system water he heing I ing dropped from to tIme tho other It will tie that I hand cnn can lIo bo irrigated by thIs without washing or ni m niOne Ono One form of the tho corrugation firS I lcm teni is IN to Lo soil whore the lie hind In moro than luau ono one direction the tho I dItches being made mado to follow ho natu unI contour which needs no gradIng Water Vator Is supplied through ono one box and I the thc dItches spread out lii In fan shape I over oer the tho lund hand I For Beets and Alfalfa Another or of time eor cor idea Illon best est to sugar beet oel alfalfa and grain hands with n a gentle slope shows water waLer distribution 11 by means o of ditches or 2 13 Inches deep and about iS 18 Inches all apart rt The Tho margin dike or basin system tern tem of irrigation shows ditches built buill surroundIng the tho tract of varyIng ur size running from Crom ono one acre to lo 10 acres In inarea area aren To practice this method sue tile the land must bo be hovel Icel or orha ha have 0 only Il a gentle slope Sufficient head hoad may mar be hail In tho ho water to Cause It to spread over tho ground Ou another tract is the tho dike dlO s system tem which follows the lie natural contour of oC the land method Is adapted to ground with a slope hail hul Is not Ical for level leel land It is 18 similar to tue tilO side Hide like dike but the IO first cost cost is less anul ancl too lie results not as assat sat is factory J The dike system Is 15 seen to best bost dan age tuge on ground round n a uniform slope TIme method Is to build dIca feet apart from rein eight to 10 12 inches hl hIgh h upon the tho of oC the tho soil Oil Vater ster Is I tikon from the tho heul mid and spread in n n a sheet over lie areas arcus between the hikes The stir sur surplus plus Into hue a ditch and h is curried to the lie next area Ih sprInkler plan calls for spray arranged between the tho trees or vegetable rows and so placed that the water nil all of lie tho ground This cnn can bo be used only where water Is supplied under system is II to lo distribute water to Lo each tree In ha an flume Tho water Is supplied from a head ditch This ThiH Is similar to tho ho piping method to individual trees but is II a waste of water though the tho cost or of In Installation Is loBS hess C M 1 Speck chairman of the proc praCtical demonstration committee or of the tho Irrigation congreSs wilt will 11 be I In the hue b by H Delepine un an experienced engineer r who hu has charge of the work and Irrigators guitars gators and growers froni Crom various arlous parts of oC t the United States and Canada In explaining the varIous methods of oC watering land to obtain tho ho bOlt boit re suIt at the least cost |