Quote:
Originally Posted by Tom Wagner
- Diffusion into the potato tuber of oxygen for respiration takes place only through lenticels.
- Lenticels are those whitish bumpy areas dotted around the tuber and are pronounced under overly wet or heavy soils, and/or too much mulch.
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I have wondered what the white bumps on potatoes have been. I used to see a lot of them when harvesting potatoes as kid from my grandparent's field. Usually it was during the years when the potatoes had lot of some kind of blight, which made them to rot. So I assumed that the bumps were an early sign of a disease.
Now it is quite obvious. The bumps were not the disease, but were caused by the same condition as the blight - a wet summer.