Potato Plants
Q.

potatoes

Zone wf17 | armat310 added on October 10, 2016 | Answered

My potatoes have got a scab. These appear to been caused by minute white 'worms.'

A.
A.Answers to this queston: Add Answer
Alisma
Certified GKH Gardening Expert
Answered on October 11, 2016

There is a disease called potato scab which is caused by bacteria, but insect or other invertebrate damage could cause the wounds that allow the bacteria in:

https://www.gardeningknowhow.com/edible/vegetables/potato/treating-scab-in-potatoes.htm
http://vegetablemdonline.ppath.cornell.edu/factsheets/Potato_Scab.htm

If those pictures don't match what your potatoes have, the "worms" you see might be nematodes, which can cause several diseases on potatoes. Some of the diseases cause a scabby appearance.

http://ipm.ucanr.edu/PMG/r607200111.html

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