Blightline July 22, 2019
NDSU Potato Blightline 22 July 2019. Late blight has not been reported in ND, MN or MB. Late blight has been reported in the Columbia Basin of WA and in central WI. Late blight severity values (DSV’s) in all potato growing areas have exceeded 15, the critical risk value at which late blight infection will occur if inoculum is present.
