0 a disease that attacks the wood of trees --
1 a disease affecting the ears and mouth of animals and humans --
2 something evil that spreads through a person's mind, an organization, or a society: --
In the beginning these cankers develop in phloem and tissues formed by the cork cambium.
Because cankers restrict the flow of nutrients, twigs and branches afflicted by cankers eventually die.
In subsequent years, new cankers will continue to form, ultimately leading to the death of the tree.
However, this cultivar is susceptible to cankers, and is weak-wooded and prone to storm damage.
Symptoms include the formation of cankers on twigs.
The cankers are parallel to the long axis of the stem and take on an oval shape.
Trees with numerous cankers show strikingly reduced yield.
Stem cankers are best treated by pruning out infection as soon as it is noticed.
