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