REPORT OF STATE HORTICULTURIST. 6l 



iiig upon the sap wood. The cell is made by the full, matured 

 grub, in which it transfers to pupa. Eventually the beetle 

 emerges from this pupa and after a short time cuts its way 

 out tliTough the bark. As each of the small channels represents 

 an individual grub, the number of holes is apt to be large. 



Trees that are thrifty are less subject to harm from this 

 insect, inasmuch as the freely moving sap tends to flood the 

 burrow, either destroying the borer or driving out the beetle. 

 Infestations may occur in vigorous trees, however, especially 

 in blocks where there is more or less dying wood, because of 

 their teindency to overrun the limits of their original points of 

 attack. 



The tendency to leave the brush from pruning operations 

 under the trees, aids tliem greatly in their propagation ; conse- 

 quently, it should be removed and burned as soon as possible. 

 If an entire tree, whether large or small, should become in- 

 fested, it should be cut down and burned, as this preven^.s 

 spreading to other trees. Vigorous trees, as has been said, are 

 not as susceptible, consequCintly applications of fertilizer and 

 pruning, when properly done, afford a means of protection. 

 Whitewashing the trees also is a preventive measure. All trees 

 should be watched carefully from year to year and, if any 

 evidence of this inse,ct is discovered, care should be taken to see 

 that they are properly looked after. 



THE APPIvE MAGGOT. 



In this insect we have had a serious enemy during the past 

 season. In sections of Cumberland and Androscoggin counties, 

 practically all of the Spies, together with many of the sweet 

 apples, have been a complete failure because of this pest. 

 Other counties have suffered in a smaller way. Where the 

 fallen fruit has been conscientiously picked up for the past 

 few years and where cultivation is being practiced, the damage 

 has been reduced considerably, but even here it is apparent 

 when the orchard is located in the immediate vicinity of one 

 which is being generally neglected. Further investigation of 

 the habits of this pest is needed in order to find some means 

 of control which is more satisfactory. 



