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Andy Robinson

Potato Extension Agronomist

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Blightline June 22, 2016

No late blight has been reported in ND or MN. Late blight has been reported in central Washington. Late blight severity values are beginning to accumulate in northern and eastern ND and northwestern MN due to the recent heavy rains, and are nearing the threshold value of 15. At this value, the accumulated weather conditions are favorable for late blight infection if inoculum is present.
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