I 



296 AGRICULTUR-'LL APPROPRIATION BILL, 1924, 



have come out of hibernation. The only question in my mind is that 

 thev will have to strike the field at the right time or the next square 

 will be punctured, too. It would not be more than three or four days 

 until another s(juaro would come on. 



FOR IXVE.STIGATIONS OF INSECTS AFFECTING FORESTS. 



Mr. Anderson. Now please take item on page 209. 



Doctor Howard. An increase of $5,000 is asked for there, Mr. 

 Chairman, of which it is proposed to spend .?2,500 in experimental 

 work and mcthcMls of preventing losses from timber-boring ins cts; 

 the other S2,.50() for shade tree protection. 1 have no argument to 

 make beyond the mere statement that the funds are required for the 

 work proposed. 



Mr. Anderson. Is there any emergency existing in this timber- 

 boring matter i 



Doctor Howard. Nothing special. 



Doctor Ball. It is a subject that has been almost neglected. The 

 timber is growing rapidly in value. There is a possibility of using 

 methods which couhl not have been employed when the stumpa^e 

 was cheap. So there is an opportunity now to save timber that could 

 not have been saved heretofore. 



FOR investigations OF INSECTS AFFECTING TRUCK CROPS, ETC. 



Mr. Andfrson. On page 211 you have an increase? 



Doctor Howard. There is an increase there of S 13.000. The first 

 two expendituras under that increase will be $4,000 in the investiga- 

 tion of pea aphis injury to cannery peas. And one of $3,000 to the 

 new Irisli potato weevil in Mississippi. Mr. Graf who has just come 

 from a peji aphis conference, will be able to explain those items. 



PEA APHIS INJURY. 



Mr. (Irak. The pea canners recently had a meeting at Chicago, and 

 refjuested the Bureau of Entomology of the department and the \ 



entomologists of the interested States to attend tliis conference and 

 tell them ubout the control of pea aphis. The insect has been in- 

 jurious in, this country for about 20 years, and in that time several 

 remedies have been tried out. with the result that nicotine has become 

 the accepted remedy. The cost of nicotine on cannerv peas has been 

 so great that most of the cannei-s, or growei-s who are gr(>wing the 

 l)ro(luct for the cannei-s, would rather take a chance of getting part 

 of their crop through without treatment than the spending of a large 

 arnoiMit of money for Ireutment in the lields. 



The treatment of cannery oeas ])y either spraying or dusting is 

 very (liflicult where th(>y have l)een broadcastecL ^^ome experimental 

 work was atlernpled this year in cooperation with tlie vState of Wis- 

 consin, using (he newly j)repared nicotine dust. The results are of 

 scientilie value in showing the po.ssibilities of this remedv. but not 

 enough has been done to show its practical possibilities. 



The pea aphis is the most (lillicult aphis to contn^l with either 

 spray <>r <lust. 



Tfie plan for ne.xt year's work, which has been approved by the 

 canners and by all the entomologists attending the conterence, was to 



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