| OCR Text |
Show PROBLEMS IN DRY FARMING Knowledge of Nitrogen and Humus Content Necessary Before System Established. A know !i di'o of the effect of dry land f.miiliiK ut on the nitrogen and hiimiiM content of the null In necessary In f ire a pi rimiet Mt system of ,ifv land f.irminK can be establlshil, mil. I I 'i holi. rl Stewart In an ad Irons he fore the recent Dry Panning eolit;resi Altuo.-t coincident with the develop no nt i f scientific dry hind farming , lie- d' t i inn n'al effect of Mich a nys ; t fiii on Hie nlirof'eti and humus con tent of the cultivated soil HUgci'teiY Itse'f to the careful Mud. 'lit of thi ..el. i. ct 'I In- hhtiiry of Kcli iitinc ii p r i ei.iinre iiou'lit that the cropping ol Mi'i-I t.i tie mupc crop caused a tie j cli :i " Ill I he nlTi uen and hlllnli-' hlllnli-' cel. it i the cultivated Moll. It also laiif'.f tti.it Miinmer fallow In . wa- I'll i 'in I'e ll -si nictlve to these lll',i:ir i mi -I it i'iits than w as coiitiunoii ( It ipilli: P-e!f I I'l.e Imp! rlaneo of nitrocen in crop 1 ;roiictl.,ii and the prepoiiiera'ic c! levldillcc I', y.'irdin;; lie devtructloti ot loifanlc maiter tin. I the resulting los'' ot tiltri'i'cn li v praetlslng a syhlem ct crop pn ihu-t fi ?i Involving t!ie use ot tl: Mimtnor fat'ow. have caused tln.iih.'iiil students of tlie mi! ..ct to slickest means cf ret iirnliit; the or if.inle matter and t'.e nitrogen to tlif nil For this iiiiptm.. the urowlni; rf legirncH ilurlng the seasnn when t)n latil Is not occupied by tie wheat ha-, been su.:!m-sIi !, Put this pract'si j defeats ijie imrpnt.p of the mniini'.f' ! fa"ow, PiasiMiicli as the limited nun I jdv i.f moist ure Is called upon to grow' ! he IcBUMf. In view of the known nctleti of cot tpnious cropping and summer fallow liiT upon ti e nitrogen and humus ol ! hit.i.l .eils. a knowledge of the effect of dry farming unon the nitrogen nn.l hiiinus of t'rv h'nd soils hecariie of ex I iti .lltigly Ki-iat Importance. With this idea In view the author, In the hiimi mi r of 11117. pad a mirvey made of th dry farming area In Cache valley the oldest dr farming dlHtrlct In the Mate of I'lah. mid the concliinlonl reached were as follows: 1. The cropping of dry fanning land In Cache vallev to wheat, cither bj the H'immi r fallow ing method or b? cunt li.uous cropping. d'icB not decreast the nitrogen or hiiiiius of the mirfact fllt of Hl.ll 2. The second foot of grain cropped land contains, less nitrogen and hutntif than iIoch the second foot of the ad Jacent virgin soil 3. The ohstrvti'l phenomena In ras of the Kra!n-cri)i,iicd land Is probably i due to the addhjon of nitrogen to the surface foot from lower depth and the addition of tho huniiiH from the added Klraw, 4. The work Indicated that In 1 study of the nltri'Ken and humus problem prob-lem In dry-Ian I farming attention must be paid to greater depth of soli than the traditional plowed surface. |
