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Willsboro Report 6-21

The Willsboro Report- 6/21/12

Hello!  Thank you for checking in on the start to a weekly blog covering the status of the Willsboro Variety Trials located on the Cornell Baker Farm in Willsboro, NY.  My name is Josh Kowalski and I am the new Field Research Technician.  My duties are to oversee the vineyard under the supervision of Kevin Iungerman of Cornell Extension’s Northeast NY Fruit Program.  Kevin established this vineyard in order to support the budding demand for knowledge and experience with cold hardy wine grapes in northern New York  for commercial purposes.  There are 25 varieties on approximately ¾ acre.

Thanks again for checking in.  Please feel free to visit anytime.


Hot, dry week; High in the upper 90s; last noteworthy rainfall 6/13/12


Berry set on most varieties.

Figure 1: Marquette Berry Set











End of flowering on a few varieties: Vignoles, Landot

Figure 2: Vignoles End of Flowering










Fungicide sprays to date: 3; Given the high rain fall amounts around budbreak, our first spray was focused on Phomopsis and Powdery Mildew.  The next two sprays were at pre- and post- bloom.

Herbicide sprays to date: 1; One of my first jobs at the vineyard was to pull the plastic in row that had dutifully served beyond expectations for six growing seasons.  In-row weed management has now shifted to herbicide use; a systemic application in the spring and fall and non-systemic applications throughout the season as necessary.  Tomorrow will be our second application to be sure to stay on top of the weeds at an early stage

Figure 3: Time for 2nd Herbicide Application


Disease and pest Issues:

No major disease problems arising.  Some minor Phomopsis and early indications of leaf phylloxera (see photo). Phylloxera susceptible cultivars will be selectively treated.

Delayed thinning (lots of shoots) due to scheduling conflicts and a wet early season (vigorous growth) led to some crowded, stuffy areas where minor signs of Phomopsis were observed.  This was quick remedied post-thinning with proper ventilation and an appropriately timed fungicide application.   Several Northern Grape “working seminars” with volunteer participants covered crop management techniques from dormant pruning through spur selection and apportionment.

Puckered leaves from Phomopsis infection observed on three Frontenac leaves.

Figure 4: Phomopsis on Frontenac Leaf







Insect Issues:

No major outbreaks.

A few Grape Cane Girdler signs observed late May.

Two leaves with likely phylloxera galls were observed today.

Figure 5: Phylloxera Gall on Leon Millot


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