A(;Ki( ri.Tl'RAL AHPROPUIATION BIM., H>24. 293 



Mr. Ik'CifANAN. Vi»u hav«' ;jot a linni ji»l» to spray jxM'aii tr<»«». 



Doctor QiAiNTANCK. Wc would iu>t In- ablo to spray Trxas rivi-r- 

 bottom trees economically. 



Mr. A.NDKKSON. Have you tinisluMl with your increases under this 

 item i 



CKKKAI. AND FOltA<JK INSECTS INVESTIGATIONS AND FOK THE CONTROI. 

 AND DESTRITCTION OK GRASSHOPPERS. 



Doctor Howard. There is no increase itsked for under the next 

 item nor under the item following that. Of course, if you wish to ask 

 anv <|Uestions we an^ Iwre to answer them. 



^Ir. Andkr.son. Have there been any serious <)uthreaks of the 

 Hessian lly this last year f 



Mr. Wakton. No: there have not been any severe outbreaks 

 • liirin;; hist year. 



Mr. IkciiANAN. Wiiat does it attack? 



Mr. Walton. It attacks wheat, rye, and barh'y. 



FOR INVKSTKJATIONS OK INSECTS AKKECTINO SOUTHERN FIELD < ROPS. 



Mr. Ander-son. The next item is on naoje 20b. investijiations of 

 insects aflfectinij southern field crops, includint; in.sects affecting cot- 

 ton, tobacco, rice, supir cane. etc. Does this item on ])at;e 200 

 include cotton boll weevil * 



Doctor Howard. Yes. sir. 



Mr. HucHANAN. What have you been able to do with the boll 

 weevil ( 



Doctor Howard. I will ask Doctor Hunter to tell you about that. 



PROr.RESJ* OK TMK HOl.l.-SVEEVlL I AMI'AliiN. 



Doctor HiNTER. Mr. Coad is the man right from the lirint; line, 

 and he could answer questions more specifically and more directly 

 than 1 could. However, a large part of the campaign this year was 

 in testing out poisoning in different localities. A number of jiroblems 

 have arisen with reference to the local conditions and their effect on 

 this j)rocess of controlling the weevil by poisoning. In your State. 

 Mr. Buchanan, of Texas, in 1921 we had a number of ex]>erimental 

 areas where the a])]>li(ation of the poison was made by our men. In 

 all cases the results were successful: that is, an increase in the crop 

 was obtained that more than covered the cost of o]>erfttions. 



This year we had no specially supervised experiments in Texas, 

 but a great many farmers all over the State applied poison. Toward 

 the end of the season we made an effort to check up, to get some 

 reading on the practical experience of these farmers. 



In every case in our publications and in lettei's anil other communi- 

 cations we have emphasized the importance — this applies more 

 especially to Texas, nut applies more or less ever^'^vhe^e — of the 

 necessity on the part of farmers providing some check area where 

 the poison is not applied so that they will he able to figure out what 

 results the}' actually obtained. 



In Texas we made an effort to <;et a complete list of all users of 

 calcium ai-senate. We succeeded through the jobbei's and from other 



