6 
tities of water. kept at the boiling point, through the orchard, and on 
a large scale is rather impracticable. 
The digging-out process, therefore, remains the simplest and most 
efficient. It entails very little expense, and after some experience can 
be done rapidly and with very little injury to the tree. The peach 
{ree grows very rapidly, and any wound occasioned by cutting out 
some of the bark to get at the larve readily heals over and, at any 
rate, the damage is already done by the larve and is not very much 
increased by this treatment. Within certain limits one can take the 
most advantageous time for this work. The larve are small in the 
autumn and are located with greater difficulty than they are in early 
summer. During the winter they are hibernating, and the damage at 
this period is therefore at the lowest ebb. April or May is a good 
season for the work, as attended to then it prevents the early summer 
feeding. It will be advisable, however, to go over the trees again in 
June to pick up any of the larvee which may have escaped the earlier 
examination. In June they are easily located by the larger size of 
their castings and pupal cases. To be effective this method should 
include not only the commercial orchard, but all old peach, cherry, 
and plum trees in yards or fields in the vicinity. 
In conclusion it may be said that the peach-tree borer is one of the 
most difficult pests to control, and no one method probably will give 
complete freedom from it. Mounding, paper wrapping, or the deter- 
rent washes should therefore be combined with the digging-out 
process, and if these are kept up as a regular yearly procedure this 
pest should be easily kept under, and the amount of labor entailed, 
especially in the digging-out work, should steadily diminish. 
Approved : 
JAMES WILSON, 
- Secretary of Agriculture. 
Wasuinecron. D. C.. October 19. 1908. 
[Cir. 54] 
O 
