550 



The Easpberby Gall Fly, 



[Sept., 



Prevention and Remedy. — The fact that the galls can be seen 

 in about six weeks after invasion by the larvae suggests a simple 

 method of dealing with this pest. A systematic search should be 

 made through the plantations during autumn and early winter, 

 and all galled canes should be cut off below the gall, and the 

 prunings collected and burned, thus effectively destrojring the 

 larvae. 



As this gall fly also attacks the bramble, all blackberry bushes 

 in hedges or in clumps near plantations should be cut back, and 

 if it is definitely known that they are the source of infestation 

 they should be destroyed by burning. In this way the pest can 

 be satisfactorily controlled and plantations kept practically free 

 from invasion. 



