CURRANT DISEASES 209 
senate) is equally effective. It is essential to make the first 
application of the fungicide before the discharge of any asco- 
spores; as previously noted, this occurs during the middle of 
May. It is further essential to keep the foliage protected 
throughout the summer. Make the first application when the 
leaves are unfolding; apply the fungicide at intervals of ten 
to twenty days until five or six sprayings have been made. 
The interval may be lengthened and the number of applications 
reduced in dry weather. In a wet season more frequent 
applications are necessary. 
Since the fungus hibernates in the fallen leaves, it seems 
logical that these should be destroyed by plowing or some 
other means. However, there would in all cases be enough 
leaves to act as an abundant source of trouble. 
REFERENCES 
Stewart, F. C., and Eustace, H. J. An epidemic of currant anthracnose. 
New York (Geneva) Agr. Exp. Sta. Bul. 199: 64-80. 1901. 
Jackson, H. S. Currant diseases. Anthracnose. Oregon Crop 
Pest and Hort. Bienn. Rept. 1911-1912 : 266-267. 1913. 
Dudley, W. R. Anthracnose of currants. Cornell Univ. Agr. Exp. 
Sta. Bul. 15: 196-198. 1889. 
Stewart, V. B. Some important leaf diseases of nursery stock. An- 
thracnose of currants and gooseberries. Cornell Univ. Agr. Exp. 
Sta. Bul. 358: 194-198. 1915. 
Clinton, G. P. Currant anthracnose. Connecticut Agr. Exp. Sta. 
Rept. 1913: 12-13. 1914. 
Stewart, V.B. Dusting nursery stock for the control of leaf diseases. 
Experiment for the control of the leaf spots of currants. Cornell 
Univ. Agr. Exp. Sta. Cire. 32:8-9. 1916. 
CaNE-BLIGHT 
Caused by Botryospheria Ribis Grossenbacher and Duggar 
Currant cane-blight or necrosis, also known as wilt and 
blight, affects chiefly the cultivated varieties of the red currant 
P 
