Mosaic is considered a minor bean disease in Georgia, except in North Georgia near clover fields. Symptoms Symptoms of the different virus diseases are very similar and difficult to separate. All the mosaic virus diseases cause some stunting and reduced yields. The affected bean leaves have irregular, light green or yellow areas merging with darker green patches, which produce the familiar mottling or mosaic effect. The mottling of contrasting yellow and green areas serves as a means of distinguishing yellow bean mosaic from common bean mosaic.
Plants infected by yellow bean mosaic are more dwarfed and bunchy.
Bean pods on infected plants are quite often undersized and sometimes curled. They may contain fewer beans than those produced on normal plants. Leaves may be long and narrow and show some puckering or downward cuppings at the margin. The overall symptoms may differ slightly with the variety and age of the plants and, to some extent, with growing conditions. Fields planted to beans or red clover should not be planted back to beans the following year.