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Andy Robinson

Potato Extension Agronomist

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Blightline August 7, 2014

Late blight has not been reported in our region of ND, MN or MB. The late blight severity threshold value of 15 has been reached at all locations. For our conditions, application of a protectant fungicide such as mancozeb or chlorothalonil on a 7-10 day schedule is recommended.
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