2019/2020 Nova Scotia Wine Grape Bud Hardiness Report no. 6: January 19 – 20

Citation

2019/2020 Nova Scotia Wine Grape Bud Hardiness Report no. 6: January 19 – 20

Résumé

A wine grape bud hardiness report is generated and distributed to the Grape Growers of Nova Scotia (GGANS) membership on a bi-weekly basis throughout the dormant season. The bi-weekly survey is performed on 3 vinifera cultivars (‘Chardonnay’, ‘Riesling’, ‘Pinot Noir’) and 2 hybrid cultivars (‘L’Acadie Blanc’, ‘Marquette’) and involves 10 grower collaborators for a total of 23 varietal blocks in total. Each report uses a table to show the latest low temperature exotherm (LTE) levels for the present and past weeks. The report also includes comments highlighting observations over the last reporting period, a plot showing the change in LTE values throughout the season, the historical 100 year minimum values and the present year’s minimum values. Three times throughout the season (early, middle, late) 11 “extra” varieties (‘Baco Noir’, ‘Chenin Blanc’, ‘Geisenheim’, ‘Leon Millot’, ‘Lucie Kuhlman’, ‘New York Muscat’, ‘Pinot Gris’, ‘Sauvignon Blanc’, ‘Seyval Blanc’, ‘Seyval Blanc’, ‘Vidal Blanc’, ‘Ortega’) from 22 additional varietal blocks are also reported. Acclimation of the two hybrid varieties, L’Acadie Blanc and Marquette, have continued to deepen and are currently at or below their historic deep winter values. In spite of this, the vinifera varieties in the survey have levelled off one to two degrees above their deep winter values. We will be watching closely in February to see if these varieties acclimate any further.

Date de publication

2020-01-20

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