Blightline July 14, 2014
No late blight has been reported in our region. Late blight severity values generally increased slightly over the weekend. The cool weather forecast for next week is favorable for late blight. If severity values in your area have accumulated to 15, application of a protectant fungicide such as mancozeb or chlorothalonil on a 7-10 day schedule is recommended. Many sites have reached this threshold.
Blightline July 14, 2014 (pdf)