Show THE PLUM BORER I 1 I 1 the american plum borer an insect which attacks impartially plum cherry peach and apple trees has been found by in vesti gators of the U S department of agriculture to confine itself its elf entirely to those treles klich which have received some previous injury it is it is said entirely unable to establish itself upon vigorous healthy uninjured trees and dorthis reason except in occasional cases is ia unlikely to become a pest of more than ordinary importance it is frequently found however on apple trees which have suffered from collar blight in order to prevent infestation by the american plum borer a professional paper of the U S department of agriculture bulletin no recommends the precaution of cutting away the dead bark and painting the wo wounded area on all injured trees with an any y non injurious tree paint after afeei has orice once established itself the cutting out method is the only one that can be followed when the proper conditions are present the plum borer can do considerable damage and it is therefore advisable to take precautions against it |