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Closeup: Pictures of Bloom, June 16

1.  ‘Dechaunac’ at full bloom.  The stigmas (red) at the top of the pistils (female flower part) are receptive to pollen from the stamens. 2.  Floret caps separate at the bottom at bloom. 3. Sometimes the caps fail to separate from the flower, but the stamens inside can still self-fertilize the flower. 4. After bloom, […]

VSP: Moving Catch Wires

June 11: Vertical shoot positioning (one of three training systems we are using for the Northern Grapes Project), requires that shoots be ‘tucked’ behind catchwires – both to maintain them upright and to reduce shading in the fruit cluster zone. Fixed vs. Moveable Catch Wires: Some growers use stationary catch wires, and manually tuck shoots […]

Bloom at Clayton

 June 11:  Frontenac was at 30-50% bloom in Clayton, New York on Wednesday, June 11.  So far Marquette and La Crescent at the same site have not started bloom, but they should follow within the coming week. In our climate, bloom typically lasts 3-5 days, although the bloom period can extend to 10-12 days if […]

Prebloom approaches: Disease Management Important

  Wild grapes (left) are in full bloom in the Finger Lakes.  They may be slightly behind in  Northern New York, but not by much. They typically bloom from 7 to 10 days before most cultivated grapes, and wild grape bloom (Vitis riparia shown here) is an important signal for grape growers for two reasons: […]

Northern Grapes News: May 2013

New Northern Grapes Project News (pdf) has been posted. In this issue: -Insights from the Northern Grapes Project Baseline Survey –Northern Grapes Project Team Profile: Jim Luby –Northern Grapes Project Team Profile: Peter Hemstad -The Disease Management Puzzle: Putting the Pieces Together -Development of New Cold-Hardy Grape Cultivars at the University of Minnesota (Pictorial) Northern […]