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NDSU Potato Blightline to Operate in 2017 (05/04/17)

The Plant Pathology Department at North Dakota State University will again be providing the potato Blightline service at no charge to the potato industry of North Dakota and western Minnesota in 2017.

NDSU Potato Blightline to Operate in 2017

The Plant Pathology Department at North Dakota State University will again be providing the potato Blightline service at no charge to the potato industry of North Dakota and western Minnesota in 2017. This year it may be important to monitor the Blightline closely since late blight was found in our area last year and the wet conditions favorable for late blight spread and infection at the end of the growing season last year. The NDSU Blightline is the best place to go to get the most recent and accurate blight updates and management information.

This will be the 23rd year that this service has been provided by NDSU and has been continually sponsored by Syngenta Crop Protection. The hotline collects data collected from weather stations in fifteen non-irrigated and twelve irrigated production areas in ND and western MN. The data is processed by the North Dakota Agricultural Weather Network (NDAWN) and analyzed by a computer program (WISDOM) to forecast when conditions are favorable for late blight to occur. The program also provides forecasting information for the development of early blight of potato.

The forecast information is used by plant pathologists Gary Secor and Neil Gudmestad, and Extension Potato Specialist Andy Robinson, to make late blight management and fungicide recommendations and notify the industry of the status of late blight and other pertinent potato information in our region. Recommendations are made initially on a weekly basis, but are updated more frequently as severity values increase or late blight is found. The Blightline will begin Monday June 1st, and will continue through mid-September depending on disease pressure. The Blightline will also be used to confirm reported late blight sightings and serve as clearing house for national late blight information. In addition to late blight forecasting, the hotline also provides cumulative P-values for early blight disease forecasting and management recommendations. Finally, it serves to alert growers of other disease and insect issues, as well as posting messages of general interest such as potato field day dates.

The hotline recommendations can be accessed by phone or website. The toll free phone number is 888.482.7286.

The NDAWN website for potato disease forecasting contains colored maps of ND to pictorially illustrate the late blight severity values (both two day and seasonal), favorable day values and P-day values for early blight throughout ND. That site is: www.ndawn.ndsu.nodak.edu Go to applications then potato late blight.

Current and archival information on late blight and other potato diseases, and research trial data, can also be found at www.ndsu.edu/potatopathology and www.ag.ndsu.edu/potatoextension.

Growers and scouts are encouraged to send suspect late blight samples to NDSU for positive identification. Late blight is a community disease and proper identification and prompt notification is important. Leaf samples should be placed in a deflated zip-lock plastic bag without a wet towel and sent to:

Gary Secor

NDSU Dept. 7660

Box 6050

Fargo, ND 58108

 Our phone number is 701.231.8362 and email address is gary.secor@ndsu.edu. We wish you a successful potato year.

 

Gary Secor

NDSU, Plant Pathologist

 

Neil Gudmestad

NDSU, Plant Pathologist

 

Andy Robinson

NDSU/U of M Extension Potato Agronomist


This site is supported in part by the Crop Protection and Pest Management Program [grant no. 2017-70006-27144/accession 1013592] from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed are those of the website author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.

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