CURRANT DISEASES 207 
affected. Although both red and white currants are susceptible 
to anthracnose, some differences in resistance are noticeable. 
It has been observed that the Albert variety is resistant and 
the Fay and Victoria, growing in close proximity to the Albert, 
may be seriously affected. Again, the White Grape and Wilder 
are susceptible, while the Moore Ruby and Perfection varieties 
are resistant. 
Symptoms. 
The disease is primarily a leaf-trouble (Fig. 54), although it 
also shows on the petioles, young canes, fruit-stalks and fruits. 
Fig. 54. — Currant-anthracnose lesions on leaves. 
The attack is made first on the older leaves, and as a result they 
become thickly dotted with small dark brown, circular spots, 
chiefly on the upper surface (Fig. 54). When the trouble 
assumes large proportions, the leaves turn yellow and fall 
prematurely. On the berries the spots are small, resembling 
fly-specks. On the fruit-stalks, the lesions are larger and may 
be one-fourth to one-half an inch in length and may extend half- 
way around the stem. On the leaf-petioles, conspicuous, 
black, slightly sunken spots are formed. The anthracnose is 
sometimes confused with leaf-spot (see page 203), but can readily 
be distinguished from it by the smaller size of the spots. 
