242 



PESTS OF ORCHARD AND SMALL FRUITS 



to others in the orchard that 

 chance not to be making vig- 

 orous growth. Trim back and 

 fertihze trees only moderately 

 attacked. Apply a coat of 

 thick carbolated wliitewash in 

 early spring, again in June, and 

 again in August. Use 1 pint of 

 crude carbolic acid to 10 gallons 

 of the wliitewash. 



Fig. 314. — The Shot Hole Borer. Sec- Fig. 315. — The Shot Hole Borer, 

 tion of bark over burrows, showing exit Adult. Enlarged and natural size, 

 holes. Original. Original. 



The Peach Bark-beetle 



{Phloeophthorus liminaris Harr.) 

 Injury is similar to that of the shot 

 hole borer. The bark of peach, plum, 

 or cherry trees is peppered with many 

 small, round holes. If the tree is not 

 already too much weakened, consider- 

 able gum will flow from these holes. 

 Removal of a section of bark will show 

 the difference between the work of 

 this insect and that of the shot hole 

 borer : the main channels made by this 

 pest run around the axis of the trunk 

 or limb, while those of the shot hole 

 borer run parallel to it. 



Fig. 316. — Burrows of the Peach 

 Bark-beetle. Original. 



