62 Farmers’ Bulletin 1220. 
grapes in the East. This disease is not common on American va- 
rieties and does not usually cause serious loss. It has been most 
frequently found in heavy or wet, poorly drained spots in vineyards, 
and may in some cases follow winter injury of the vine. 
TREATMENT. 
As the germ producing the disease lives in the soil, it can not be 
controlled by spraying. Diseased plants showing galls at the crown 
should be dug up and destroyed by burning. Where galls are con- 
fined to branches these should be removed far enough below the gall 
Fic. 69.—Dead arm of grape. The right arm is nearly killed by the disease. The canker 
produced by the fungus is located between the terminal, abnormal, weak shoot and the 
fully developed healthy shoot near the base. 
to include all affected tissues. In setting new plants great care 
should be taken to see that they are entirely free from any signs of 
swellings or galls on the roots or canes. As this disease also attacks 
various fruit trees and bushes and other cultivated plants, soil in 
which such diseased plants have been found should be avoided, if 
practicable, in planting grapevines. 
LESS IMPORTANT DISEASES. 
BITTER-ROT 
Fruit attacked by bitter-rot °° presents an appearance very similar 
to that produced by the ripe-rot. Bitter-rot is no doubt sometimes 
86 Caused by Melanconium fuligineum (Scrib. & Viala) Cav. 
