Small Fruits 



109 



and continues to increase until the plants entirely succumb. 

 Numerous late blossoms appear during the first season and 

 increase in number from year to year. 



The disease is due to a fungus, and the infection of new 

 buds occurs during the blooming and fruiting season. For 



Fig. 54. 



•The Dewberry double-blossom showing witches-broom of 

 the vine. After Cook. 



this reason it is impossible to control the disease by spraying, 

 but it may be held in check by removing and burning the 

 deformed buds as soon as they begin to open, and can be 

 easily detected. If this is done early in the season before 

 the leaves are large enough to hide the diseased parts, a 

 man working alone can care for plants at the rate of 400 

 per hour. 



