Potato brown fleck

General information

Potato brown fleck is a disorder, not a disease.

Cause Flecking caused by high soil temperatures during bulking. Calcium and/or boron deficiency is also believed to be involved.
How does it spread?

Being a disorder, brown fleck does not spread.

Crops affected

Potato

Control options

In the future, ensure calcium and boron levels are adequate, and do not plant susceptible varieties, such as Winlock, to mature in hot weather.