Severe infection causes a reduction in stand vigor, fruit quality, winter hardiness, and stand yield. Raspberry leaf curl virus typically causes curling and distortion of dark green leaves. Infected plants appear stunted and contain excessive branching. Infected fruit is usually small, crumbly, and seedy. This disease is spread slowly by the small raspberry aphid.
Severe infection causes a reduction in yield, fruit quality, and winter hardiness.
Infected leaflets appear stunted, curied, and distorted. Yellow rings, line patterns, or veinal chlorosis commonly appear on the leaves of red raspberry plants. However, new leaves are often void of symptoms. Tomato ringspot virus can also be dispersed through infected seed. Viral Disease Management Viral disease management should begin with the cultural practices previously listed.