Contributors: K.R. Barker, Plant Pathologist;
D.M. Benson, Research Plant Pathologist;
R.K. Jones, Extension Plant Pathologist
Damage on Stem, Branch, Trunk, Leaves, Tubers, or Fruit of any Sizable Plant
(Localized Rot, Decay, Discoloration, Canker, Swelling, Leafspot,
- Several representative plant portions should be selected. A range of symptoms should be
evident, if possible. Items should be placed in a plastic bag
- If a canker exists, the branch should be cut several inches beyond each end of affected area,
including some live wood. Samples should be placed in a plastic bag when collected.
- Tree or vegetable fruits or potato tubers should be wrapped in newspaper and packed in a
box to prevent crushing. Rotting tree or vegetable fruits or potato tubers should not be placed in
- If plant or tree has low vigor or die-back symptoms in addition to localized rot or other
problems, a quart of soil and a generous root sample should be mixed together in a plastic bag.
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Last Modified: 07/10/96