Monday, July 31, 2006

Late blight strain from Three Rivers outbreak identified

Isolates of Phytophthora infestans (the late blight pathogen) collected from infected plants in fields near Three Rivers, MI at the beginning of July (2006) have all been identified as the US 8 strain of the late blight pathogen. US 8 is the most common isolated detected in the United States. For more information on the different strains of P. infestans see the poster by Young et al., 2005 (.pdf file).

Late Blight outbreaks discovered in NE Michigan

Late blight outbreaks have been reported in Sagniaw and Tuscola counties. In Saginaw county, a single outbreak was reported in a field near Birch Run. Multiple outbreaks have been reported in Tuscola county. With the recent thunder storms and heavy rains that have swept across the state in recent days it is important to be extra vigilant when scouting fields for late blight. Particular attention should be paid to pivot tracks and other such lanes created by farm machinery. For further information on measures that should be taken when late blight is observed refer to the Late Blight extension bulletin.

Wednesday, July 26, 2006

PAA/Solanaceae 2006 Meeting Posters Online


The Potato Association of America annual meeting is going on this week in conjunction with the VI International Solanaceae Conference and Solanaceae Genomics Network, in Madison Wisconsin. The posters which we presented this year are now available for download in .pdf format. See the Recent publications page for more details.

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Monday, July 17, 2006

Late Blight Outbreak spreads in SW Michigan

The Late Blight Risk Level for St. Josephs county in southwest Michigan has been raised to Pink, as late blight has now been reported in more fields in the Three Rivers area. At this risk level systemic fungicides are recommended at full application rate along with a protectant fungicide such as Bravo, plus Supertin at 3 - 3.75 oz/acre.

Montcalm Research Farm Field Day, Aug. 17

The Montcalm Potato Research Farm Field Day will be held this year on August 17. Events will start at 11:00 am at the Douglass Township Hall, in Entrican. See the attached flyer for further details, or contact Chris Long by phone at (517) 355-0271 Ext. 193, or e-mail: longch@msu.edu.

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Monday, July 10, 2006

LATE BLIGHT FOUND IN MICHIGAN

Late blight has been found in a field in Southwest Michigan near the town of Three Rivers. It was found on a variety that is particularly susceptible to the disease. However, it is highly unlikely that the disease was initiated through seed-borne infection as it appeared 7 days after heavy rains and thunderstorms passed through the area. The outbreak has been contained, as the infected area has been dessicated with Diquat and the surrounding fields have been sprayed with Gavel, Curzate, Supertin and Bravo.

This year has seen heavy rains in some areas of the state and this outbreak illustrates the need to be vigilant and the importance of scouting fields at least once a week. Particular attention should be paid to pivot tracks and other such lanes created by farm machinery. For further information on measures that should be taken when late blight is observed refer to the Late Blight extension bulletin. This bulletin is also available as a high quality downloadable .pdf file.

Monday, July 03, 2006

New Frequently Asked Questions page added

Due to all the recent changes to the lateblight disease prediction website, I have added a new FAQ page to the site to address some of the most common questions that I have been asked recently. If you have any other questions/answers you think should be added to the page please let me know.

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