AORICULTIIRAI. APPROPRIATION BILI^ 19li. 181 



KOK IlIorilYHK'AL I.N VKSTHJATION. 



On pnpo 180, tlir itoni for " liinphyHiml invi»H(i<;Rtion " is not 

 changed. 



Mr. Hr( MAN. \.N. What is llmt '. What is hiuphysical invfsti^jjit inn ? 



l)(H't(»r Tavlok. Thi.s ha.s rath<>r to <lo with fhr [thvsi( s of hfp. 



Mr. HuriiANAN. Of phint lifo^ 



Doctor Tayi,<>i{. Yos, sir. The phy.sical ft»utur«'s of phiril j^rowth 

 in contrachsctinction from the rhcinical fcaturos. 



Mr. Hi( MANAN. I th(»u<^ht the < ln'mirnl features iletonniiuMl (he 

 bi«>lo<;i(al fraluros of thorn? 



l)o<'tor 'Payf.ok. This has to do witli such fcatiircs as to water 

 reqiiirvinont, tho transpiration and movoinont of the water supply 

 of [)hints rather than to their chemical rehitionshij). It is a coine<l 

 word to cover a type of activity which to a consi<h'rahle extent is 

 centered around the devisinj; of ecpiipment for the a<'tual measuring 

 of the physiolo«;ical processes throu<^h which phints {;row. throuf^li 

 which the water distribution is determined phmt j^rowth and 

 phenomena. 



Mr. Andkkson. This is distinctl}- a technical investij^ation ' 



Doctor Tayi.ok. A technical investifjation, and is of importance 

 because of its relationship to several other lines of technical biological 

 work. 



Tuesday, November 29 1022 



INSECTS affecting THE PECAN. 



STATEMENT OF MR. J. M. PATTERSON. PUTNEY, GA. 



Mr. Anderson. The committee will retuni this morning to the 

 three items relating to the pecan, the first to diseases of the pecan, 

 the second to insects affecting the pecan, and the third an item 

 relating to im|>rovefl metiuxls in connection witii th(> culture of the 

 pecan. 



VYe will lirst hear Mr. Patterson. 



Mr. Patterson. Mr. Chairman, I am here representing the Na- 

 tional Pecan (irowers' Association, the Georgia-Florida Pecan (irow- 

 ers' Association, and the Pa[)er Shell Pecan. Clrowtys' Association. I 

 think that it was in May of this year that a committee representing 

 th(»se various associations came to Washington and had a confenMice 

 in Secretary Wallace's ollice. We had suddenly been confronted 

 with some discMises and some insect pests which lot>ked very serious 

 to the pecan industry. W^' came to Washington, and Secretary Wal- 

 lace invited in Doctor Tusloi', Doctor Quaintauce, Doctor Corbett. 

 and Doctor Waite, and we had a rather lengthy conference, going over 

 those matters in detail. Following that ctuiference this committee 

 submitted to Secretary Wallace provisions covering the matter ami 

 suggestions as to an increase in the appropriation, which we thought 

 we could reasonably ask. in order to take care of these troubles. 



The two cliief troubles we had were scab and the pecan nut case 

 borer, either one of which, if it continues to spread in the groves 

 threatens the almost complete extinction of the industry. Wo 



