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Late Blight Spore Trapping Network (08/01/19)

The late blight spore trapping network was started in July 2019. The threat of late blight is a looming concern for potato growers as it has potential to cause severe yield and financial losses.

The late blight spore trapping network was started in July 2019. The threat of late blight is a looming concern for potato growers as it has potential to cause severe yield and financial losses. Early detection and protection can help save a potato crop, as it is unknown when late blight spores are in proximity to potato fields. The potato Blightline, utilizes a weather model to indicate when conditions are favorable for late blight, but does not indicate if late blight spores are present. The focus of this project is to provide data on late blight spores. Spore data in addition to utilizing the predictive model can improve late blight management strategies. There are a number of cooperating farms who have placed a wind driven spore trap near a potato field (Figure 1). The filters are changed weekly and sent to Dr. Neil Gudmestad’s laboratory for detection of late blight. Results are published on the NDSU/UMN Potato Extension webpage at z.umn.edu/spud.

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Andy Robinson

NDSU/U of M Extension Potato Agronomist

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