DEPARTMENT OF ENTOMOLOGY. 



How to Fight Cranberry Insects. 



By Henry J. Franklin, Ph. D. 



This bulletin is a revision of bulletin No. 115 of this Station and 

 is intended to bring the economic side of that report up to the end 

 of the year 1907 when the writer's connection with the work ceased, 

 thus giving the results of two full years' study and experiments on 

 these insects. Prof. C. H. Fernald and Dr. H. T. Fernald have 

 assisted the author by suggestions and advice during the investiga- 

 tion and by revising the manuscript of this bulletin. 



THE CRANBERRY FRUIT WORM. 



Mineola vaccinii (Riley). 

 Recommendations for treatment : 



A. On bogs which have water supply for winter flowage and 

 for reflowage: 



1 . Reflow immediately after picking, for ten days or tivo zveeks. 

 Draw off this flowage and, after allowing the foliage to ripen, put on 

 the water for the wititer. If, in a series of closely connected bogs, 

 some bearing early varieties only, are so situated that they may be 

 flowed independently of the others, reflow them as soon as the fruit 

 is off, without waiting to finish picking the other bogs. 



2. Draw off the winter flowage early in April as a rule but every 

 third or fourth year hold it ufitil after the middle of May. 



B. On winter flowed bogs which have not water supply for 

 reflowage : 



1. Put on the winter flowage as soon as possible after the cranberry 

 foliage has ripened and hardened. 



2. Hold this flowage every spring until early in April, and every 

 third or fourth year until after the middle of May. 



