» The Peach Borer. 9 
and remove them by means of a knife or other suitable tool. In 
worming care should be taken not to cut the sound bark more than 
necessary, and the cutting should be done vertically. Carelessness 
in the use of worming tools may result in as much damage to trees as 
that caused by the insects. After trees have been wormed it is 
desirable, if practicable, to go over them again a few days later, when 
the location of any larve missed during the first examination will 
usually be indicated by the exuded excrement or frass. When the 
worming has been completed the earth should be replaced around 
the trees—in the fall, always before freezing weather sets in. 
After spring worming, a wash can be applied, or the earth mounded 
somewhat around the base of the tree, or the wash and mound may 
Fic. 8.—Adult male ofthe peach borer. Enlarged. 
both be used (fig. 10). There is little if any advantage in the use of a 
wash, or in mounding, after the fall worming, since infestation 
occurs during the summer and early fall. The mounding will cause 
the borers to enter the bark somewhat higher, facilitating their 
detection and removal. If washes or wrappings are to be used 
they should be put on at once after the spring worming and before 
the earth is replaced around the trees. Perhaps as good a wash as 
any can be made from lime-sulphur concentrate (33° Baumé), used 
at the rate of 1 part to 6 or 7 parts of water, to which an amount of 
lime has been added to give it the consistency of heavy paint. A 
caustic wash can sometimes be used to advantage in the fall to destroy 
any little borers more or less exposed on the tree. For this purpose 
use caustic soda or lye at the rate of 1 pound to 8 or 9 gallons of 
water, and to this, after careful slaking, add about 10 pounds of stone 
lime. 
