Af;ni(TLTT'nAr, ArpnopitiATiox nii,i„ u>24. 165 



Doctor Kki.i.kkm v\. Y<-<. sir. 



Doctor Tayloh. 'I'liis inn|) here will show. 



Doctor Kki.i.kiimav. The l.'J States, all of wlurh |iro<iiicc sonic 

 sprinj; wheat, arc the States in which this campaign i-< of die j^reatcst 

 iinj>ortarice. 



Mr. IJi<iiA\AN. Well, are all of those north of the Nehraska line? 



Doctor Kki.f.kiiman. No; Nehraska is included. 



Mr. IU( UANAN. Is that the north «tr south Nehraska line? 



Doctor Kki.lku.man. In many winters the north half of Nehraska, 

 I possihly all of Nehraska wouM he clean«'d up through the severity 

 of the winter. In some winters even the Nehraska hne mi<;ht l>e r 

 Jittle too far south to he the dead line on spore over-winterin;;. hut 

 in that general area there is a line that waves up and down from season 

 to season. In that j^eneral area the eradication of the cf)mmon !)ar- 

 l)errv is undouhtedly n necessity if wheat j^rowing is to attain its 

 mu.xiinum productivity. 



There is one little ccmiment herein Doctor Stakman's report that I 

 would like to read: 



I)uriii;; a IT-niili' automohilc trip near the Irrn* of Kii^rland not a trace of black strm 



liit wa.>* fouii<l I'Xct'pt ni'ar thrcf l)arl)('rry hushes. •\>,'aiii. in Wah-.x, not a trace of the 



ist could ho found, after drivinp for a prcat many miles, except on several farma 



' '■• there were harherries. In fart, the relation.xhip here was iV) clear that it wa« 



le j'a.'^ily to locate ti>e barberry bu.'<he,-* by tracing the ru.^t to it.s source. Most 



oi ilie plant patholouist.-^ of Kni;lan<i aj,Tee that black .stem ru.st <an not exi.st there 



without the <()inin(in barbi-rry. The same tliini: .<eem.s t<t lie true throuiihout moct of 



France. 



Mr. Bi'CHAN.vx. In those countries, how do the climatic conditions 

 com{)are with the climate north of the Nebraska line, or south of the 

 Nehraska line ? 



Doctor Kellerman. The climatic conditions would he pretty 

 Inuch the same as in Nehraska, except that the extremes are not so 

 great. 



Mr. Bttu w w". Well, does it <iet as cold in Nebraska as it does 

 there ( 



Doctor Kellekmax. It gets colder in Nebraska. It gets colder in 



[Nebraska than it does in those coimtries. except in occasional areas in 



nortliern France. It wouki compare pretty favorably with Austria 



antl northern Germany and Denmark. Denmark would be colder 



Ithan Nebraska. 



Doctor Taylor. Their summers would generally l)e cooli-r than 

 {Nebraska. They are too cool for corn. They are not as far from the 

 jocean a.s Nebraska, an(l they, therefore, have less hot weather. 



Mr. Broi.vxAX. I understood the chairman to say that there 

 IVas going to be a delegation down here to ask for a large increase in 

 [this appropriatit)n. Is this as much as you can use economically 

 land efticiently ? 



Mr. Andeksox. Before you answ(«r tiiat (luestion, let me 



Doctor Keller.max (interposing). That, 1 think, is a rather dif- 

 Ificult (luestion to answer. 



Mr. Bl'ciiaxax. That is the question by which we are to be guided 

 in making appropriations under tliis act. 



Doctor Kellermax. 1 think that the question as to the extent to 

 which it is advisable to expend money is a question that would have 

 to be determined on other grounds also. 



t 



