An historic plant disease that wiped out the Irish potato crop generations ago has been found in two commercial potato fields in Wisconsin.
The disease, phytophthora infestans, or late blight, has been confined to tomato plants here, so the discovery of the disease in two potato fields in two separate Wisconsin counties is raising concerns from state agriculture officials who are recommending homeowners destroy any tomato plants in their garden that show signs of late blight.
Quoted: University of Wisconsin-Madison plant pathologist Amanda Gevens