Potato brown fleck
Potato brown fleck is a disorder, not a disease.
Flecking caused by high soil temperatures during bulking. Calcium and/or boron deficiency is also believed to be involved.
How it spreads
Being a disorder, brown fleck does not spread.
In the future, ensure calcium and boron levels are adequate, and do not plant susceptible varieties, such as Winlock, to mature in hot weather.
- Last reviewed: 19 Oct 2022
- Last updated: 19 Oct 2022