28 



MASS. EXPERIMENT STATION BULLETIN 447 



Matthews and Howes. It may be treated by flooding for thirty hours or by 

 spraying with Bordeaux mixture, 10 pounds of copper sulfate and 4 pounds of 

 lime to 100 gallons of water, 250 gallons to an acre, about May 25. (H. F. Berg- 

 man.) 



Fi«. 21. 

 LEFT: Witches' Broom Growth Caused by the False Blossom Disease. 

 RIGHT: Flower Development of Vines with False Blossom. 



Fig. 22. Blunt-nosed Leafhoppers 

 This insect carries the false blossom disease. 



Insect Pestsi^ 



The chief cranberry pests in order of their importance are: the root grub, the 

 fruitworm, the blunt-nosed leaf hopper (carrier of false blossom), the black-headed 

 fireworm, the gypsy moth, and the girdler. 



^^ The best discussions of cranberry insects are Farmers' Bulletin No. 860 of the United States 

 Department of Agriculture and Bulletin No. 445 of the Massachusetts Agricultural Experiment 

 Station, the latter giving more up-to-date treatments. The extension services of Barnstable and 

 Plymouth counties (with offices at Barnstable and at the court house in Brockton, respectively) 

 issue a cranl erry insect and d'"sea=e control chart and a weed control chart every spring. 



