THE HOP FLEA-BEETLE. 



89 



This method captures a satisfactor}'' percentage of the beetles and 

 shoidd 1)0 comparatively inexpensive. But unfortunately the re- 

 peated operations which are iiecessary bring the cost to a high figure. 

 It cost Mr. Hulbert last year approximately $1.25 per acre for each 

 operation. He Avent OA^er his vines six times, and some parts of the 

 3'ard eight or ten times. He expected to go over it at least twice 

 more, so that the total cost Avould be from $10 to $15 per acre. 



In figure 19 a portion of a hop field is shoAvn which illustrates the 

 tarred '* boards '' in place for use. The flea-beetles arc dusted off 

 of the vines upon these tarred receptacles with wisps of ha}-, as 



Fig. 19. — I'ortion ol' hop lwU\ wi;.. i.....ii ...,..;a.> in jihuf. Floa-boeUes ai. ,...,.>,,. r, ,,.. 

 wisps of hay from the vines onto tarred boards. (Original.) 



described above. All of the vines were tanglefooted, but the flea- 

 l)eetles Avent up the poles and crossed over on the wires overhead until 

 the tanglefoot Avas applied. Plate VII illustrates the method of 

 cajituring the hop flea-beetle on tarred horse sledges, also by shaking 

 the vines. Millions Avere captured in this Avay. 



CLEAX CVLTIVATIOX. 



Frequent stirring of the soil and other cultural operations seem, 

 as yet, to be of no appreciable help, according to ^Nlr. Quavle. and the 

 kind of soil also seems to haA'e little or nothing to do Avith the abun- 



