DISEASES OF CULTIVATED PLANTS. 325 
Fig. 76. Peach tree, two years old, Carpenter, Ohio—one of those remaining alive though injured 
by freezing of 1906-7. Dead branches and ridge on trunk mark dead portion. From Bulletin 192, 
Yellows. Peach yellows is a serious, contagious disease of this fruit in most 
portions of Ohio. Only in certain seasons may we find yellowish color as a 
marked symptom of affected trees. The true symptoms of yellows are: 1. Pre- 
mature ripening of the fruit which is highly colored, often purplish spotted, and 
has the flesh marbled with red. 2. The premature growth of winter buds, 
resulting in excessive branching on new shoots, and the development of slender, 
wiry branched twigs. 3. Resting buds or adventitions buds are formed on the 
trunk and branches; these grow into sickly shoots with pale, narrowed leaves, 
and usually become much branched, with tips like veritable brooms. Aside 
from these specific evidences of yellows which serve to distinguish yellow color 
from true yellows disease, there are others less easily déscribed but none the 
less useful to the practical observer. This disease may be recognized late in the 
