ACRK ri.TritAi. APPRornrATiox hii.u I'-'i*. 289 



for. us additioniil sroutinj; work. In MsciTtiiin tlu» fiirtlior sprrjul of 

 tin* ins«'ct, Hs wt'll Hs («» iiicn'asr ccrtuiri proji'cts of rrs<«arfli <l«'Hliri;; 

 with inspcticidcs. disinfection <»f nursery stock, and to cnlnrj;c the 

 s«>arch for parasites from foreign c(Hintrics. 



Mr. Andkkso.n. W here is this hu^ h>cated now '. 



Doctor QiAiNTANc K. It o<'curs in the rejjion of IMiihidelphia. 

 Here is Phihidelphia County i indicating; on map): here is the Dehiware 

 Kiver an<l this part is New Jersey iindicate<h. The iii'^e<-t is on hoth 

 sides of the river. This (it)dicatin;;) represents the territory infested 

 in 1021. 270 .scpiare iniUvs; the i;reen area represents the 11122 area, 

 which is 773 square miles. 



There are several nurserio iii ilial lcrriiur\. ."-"onic of the hir;;e-,t 

 nurseries in the I niled Stales are near Phihidelphia and are hx ated 

 wliere those {greenish spots appear on this niaf) < lose to the infested 

 area. The nui-serynien themselves are very much perturlx-d ahout 

 the effect this insect may have uj)on their nnrserv husiness, especinllv 

 in the view of the tyf)e of stock they <;row. They propa;;at«' manv 

 ornamental plants, especially everjjreens. and these must have aroun(f 

 the roots a small hall of earth so that they will live when replanted. 

 Now, this insect, in o!H' of its stai;«'s, is a ^ruh, like the common white 

 ^rul). It mav jret into the soil around the roots of the nurserv .>to<k. 

 It is almost impo.ssihle to disinfect these balls of earth and ship them 

 out safely. One important reason for askin<; an increase in this item 

 is for research work to ascertain a method of doinj; awav with the 

 halls of earth around the nurserv stock, or of treating them so that 

 they ean be shipped and replanted with succe.ss. We have installed 

 in some apparatus that lowers or raises the temperature suddetdv. 

 We have been putting the plants through that. We have been usiiig 

 <;ases and solutions of various sorts. We have been doing this in the 

 hope of showing the practicability of safely replanting coniferous 

 stock with earth removed from the roots. It is estimated that this 

 insect will soon afTect nursery interests valued at S 10, ()()(). ()()() or 

 S20,0()0.000, and we are anxious to do something this year for the 

 nurserv trade in that section of the countrv. 



KEDERAI. AND STATE QCARANTINES. 



Mr. Andkksun. Is a (juarantine now maintained against this area ^ 



Doctor QiAiNTANCE. There are Federal and State (|Uarantines on 

 now; yes. 



Mr. Anderson. How does that operate and what does it operate 

 against '. 



Doctor QiAiNTANCE. It involves the produce likelv to distribute 

 the insect, especially the sweet com in this area. The adult beetle 

 has the habit of entering the tip of the ear; the ear ^\ hen pulled off is 

 sent to market in baskets. We inspect all of the sweet corn from the 

 territory for the purpose of preventing the spread of this beetle to 

 distant places, but permit the produce to go to local markets where 

 the insect occurs. Ninety per cent of this corn goes into the Phila- 

 delphia market. We have foinul some four or live thousanil beetles 

 this year in the tips of ears of sweet corn, and if we had not found 

 them the chances are that some of them would have been .scattered 

 long distances. Our principal concern is to prevent the long-distance 

 spread of the l)«'etle, realizing that we can not prevent its normal 

 spread frt)m year to year. 



