Janice LeBoeuf, OMAFRA Vegetable Crop Specialist, Ridgetown
From Eugenia Banks, OMAFRA Potato Specialist, Guelph: Yesterday late blight was found in a potato field near Simcoe. The field was senescing so late blight was not aggressive. The field was topkilled immediately.
A standard tomato fungicide program for early blight, septoria, and anthracnose should provide protection against late blight infection when pressure is low, so there is no need to panic. Continue to scout your fields carefully and review the symptoms of late blight and other problems that can cause similar symptoms.